CMSSW/DQM/TrackingMonitor/src/PackedCandidateTrackValidator.cc

Float16Helper

HitPatternPrinter

LogIntHelper

PackedCandidateTrackValidator

PackedValueCheck

PackedValueCheckResult

Range

RangeAbs

RangeStatus

TrackAlgoPrinter

UnderOverflow

UnderOverflow

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 
#include "FWCore/Framework/interface/Event.h"
#include "FWCore/Framework/interface/ESHandle.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "FWCore/ParameterSet/interface/ConfigurationDescriptions.h"
#include "FWCore/ParameterSet/interface/ParameterSetDescription.h"
#include "FWCore/MessageLogger/interface/MessageLogger.h"
#include "FWCore/Utilities/interface/VecArray.h"
#include "FWCore/Utilities/interface/isFinite.h"

#include "DQMServices/Core/interface/DQMEDAnalyzer.h"
#include "DQMServices/Core/interface/DQMStore.h"

#include "DataFormats/Common/interface/Association.h"
#include "DataFormats/TrackReco/interface/Track.h"
#include "DataFormats/PatCandidates/interface/PackedCandidate.h"
#include "DataFormats/Math/interface/libminifloat.h"
#include "DataFormats/Math/interface/liblogintpack.h"
#include "DataFormats/VertexReco/interface/Vertex.h"
#include "DataFormats/VertexReco/interface/VertexFwd.h"
#include "DataFormats/Math/interface/deltaPhi.h"

#include "DataFormats/TrackerCommon/interface/TrackerTopology.h"
#include "Geometry/Records/interface/TrackerTopologyRcd.h"

#include <iomanip>

namespace {
  using dqm::reco::DQMStore;
  using dqm::reco::MonitorElement;

  template <typename T>
  void fillNoFlow(MonitorElement* me, T val) {
    auto h = me->getTH1();
    const auto xaxis = h->GetXaxis();
    if (val <= xaxis->GetXmin())
      h->AddBinContent(xaxis->GetFirst());
    else if (val >= xaxis->GetXmax())
      h->AddBinContent(xaxis->GetLast());
    else
      h->Fill(val);
  }

  class HitPatternPrinter {
  public:
    explicit HitPatternPrinter(const reco::Track& trk) : track(trk) {}

    void print(std::ostream& os) const {
      const reco::HitPattern& p = track.hitPattern();

      for (int i = 0; i < p.numberOfAllHits(reco::HitPattern::TRACK_HITS); ++i) {
        uint32_t hit = p.getHitPattern(reco::HitPattern::TRACK_HITS, i);

        detLayer(os, p, hit);
        if (p.missingHitFilter(hit)) {
          os << "(miss)";
        } else if (p.inactiveHitFilter(hit)) {
          os << "(inact)";
        } else if (p.badHitFilter(hit)) {
          os << "(bad)";
        }
        os << " ";
      }

      if (p.numberOfLostHits(reco::HitPattern::MISSING_INNER_HITS) > 0) {
        os << "lost inner ";

        for (int i = 0; i < p.numberOfAllHits(reco::HitPattern::MISSING_INNER_HITS); ++i) {
          uint32_t hit = p.getHitPattern(reco::HitPattern::MISSING_INNER_HITS, i);
          detLayer(os, p, hit);
          if (p.missingHitFilter(hit)) {
            os << "(miss)";
          } else if (p.inactiveHitFilter(hit)) {
            os << "(inact)";
          }
        }
      }
      if (p.numberOfLostHits(reco::HitPattern::MISSING_OUTER_HITS) > 0) {
        os << "lost outer ";

        for (int i = 0; i < p.numberOfAllHits(reco::HitPattern::MISSING_OUTER_HITS); ++i) {
          uint32_t hit = p.getHitPattern(reco::HitPattern::MISSING_OUTER_HITS, i);
          detLayer(os, p, hit);
          if (p.missingHitFilter(hit)) {
            os << "(miss)";
          } else if (p.inactiveHitFilter(hit)) {
            os << "(inact)";
          }
        }
      }
    }

  private:
    static void detLayer(std::ostream& os, const reco::HitPattern& p, uint32_t hit) {
      if (p.pixelBarrelHitFilter(hit)) {
        os << "BPIX";
      } else if (p.pixelEndcapHitFilter(hit)) {
        os << "FPIX";
      } else if (p.stripTIBHitFilter(hit)) {
        os << "TIB";
      } else if (p.stripTIDHitFilter(hit)) {
        os << "TID";
      } else if (p.stripTOBHitFilter(hit)) {
        os << "TOB";
      } else if (p.stripTECHitFilter(hit)) {
        os << "TEC";
      }
      os << p.getLayer(hit);
    }

    const reco::Track& track;
  };

  std::ostream& operator<<(std::ostream& os, const HitPatternPrinter& hpp) {
    hpp.print(os);
    return os;
  }

  class TrackAlgoPrinter {
  public:
    explicit TrackAlgoPrinter(const reco::Track& trk) : track(trk) {}

    void print(std::ostream& os) const {
      edm::VecArray<reco::TrackBase::TrackAlgorithm, reco::TrackBase::algoSize> algos;
      for (int ialgo = 0; ialgo < reco::TrackBase::algoSize; ++ialgo) {
        auto algo = static_cast<reco::TrackBase::TrackAlgorithm>(ialgo);
        if (track.isAlgoInMask(algo)) {
          algos.push_back(algo);
        }
      }

      os << "algo " << reco::TrackBase::algoName(track.algo());
      if (track.originalAlgo() != track.algo())
        os << " originalAlgo " << reco::TrackBase::algoName(track.originalAlgo());
      if (algos.size() > 1) {
        os << " algoMask";
        for (auto algo : algos) {
          os << " " << reco::TrackBase::algoName(algo);
        }
      }
    }

  private:
    const reco::Track& track;
  };
  std::ostream& operator<<(std::ostream& os, const TrackAlgoPrinter& tap) {
    tap.print(os);
    return os;
  }

  double diffRelative(double a, double b) { return (a - b) / b; }

  class LogIntHelper {
  public:
    LogIntHelper(double lmin, double lmax) : lmin_(lmin), lmax_(lmax) {}

    class UnderOverflow {
    public:
      UnderOverflow(double largestValue, double smallestValue, std::function<double(double)> modifyUnpack)
          : unpackedLargestValue_(modifyUnpack ? modifyUnpack(largestValue) : largestValue),
            unpackedSmallestValue_(modifyUnpack ? modifyUnpack(smallestValue) : smallestValue) {}

      bool compatibleWithUnderflow(double value) const { return value == unpackedSmallestValue_; }
      void printNonOkUnderflow(std::ostream& os) const { os << " (not min " << unpackedSmallestValue_ << ")"; }

      bool compatibleWithOverflow(double value) const { return value == unpackedLargestValue_; }
      void printNonOkOverflow(std::ostream& os) const { os << " (not max " << unpackedLargestValue_ << ")"; }

    private:
      // narrow to float to compare apples to apples with values from
      // PackedCandidate (even though the final comparison is done in
      // double)
      const float unpackedLargestValue_;
      const float unpackedSmallestValue_;
    };

    static std::string maxName() { return "max"; }
    static std::string minName() { return "min"; }

    UnderOverflow underOverflowHelper(double value, std::function<double(double)> modifyUnpack) const {
      return UnderOverflow(
          largestValue(), value >= 0 ? smallestPositiveValue() : std::abs(smallestNegativeValue()), modifyUnpack);
    }

    double largestValue() const { return logintpack::unpack8log(127, lmin_, lmax_); }

    static bool wouldBeDenorm(double value) { return false; }

    // lessThan means closer to zero
    bool lessThanSmallestValue(double value) const {
      if (value >= 0)
        return value < smallestPositiveValue();
      else
        return value > smallestNegativeValue();
    }

    double smallestPositiveValue() const { return logintpack::unpack8log(logintpack::smallestPositive, lmin_, lmax_); }

    double smallestNegativeValue() const { return logintpack::unpack8log(logintpack::smallestNegative, lmin_, lmax_); }

  private:
    const double lmin_;
    const double lmax_;
  };
  class Float16Helper {
  public:
    class UnderOverflow {
    public:
      static void printNonOkUnderflow(std::ostream& os) { os << " (not 0)"; }
      static bool compatibleWithUnderflow(double value) { return value == 0.0; }
      static void printNonOkOverflow(std::ostream& os) { os << " (not inf)"; }
      static bool compatibleWithOverflow(double value) { return edm::isNotFinite(value); }
    };

    static std::string maxName() { return "inf"; }
    static std::string minName() { return "0"; }

    static UnderOverflow underOverflowHelper(double value, std::function<double(double)>) { return UnderOverflow(); }

    static double largestValue() { return MiniFloatConverter::max32RoundedToMax16(); }

    static bool wouldBeDenorm(double value) {
      const float valuef = static_cast<float>(value);
      return valuef >= MiniFloatConverter::denorm_min() && valuef < MiniFloatConverter::min();
    }

    static bool lessThanSmallestValue(double value) { return std::abs(value) < smallestValue(); }

    static double smallestValue() { return MiniFloatConverter::denorm_min(); }
  };

  enum class RangeStatus {
    inrange = 0,
    inrange_signflip = 1,
    denormal = 2,
    underflow_OK = 3,
    underflow_notOK = 4,
    overflow_OK = 5,
    overflow_notOK = 6
  };
  bool isInRange(RangeStatus status) { return status == RangeStatus::inrange || status == RangeStatus::denormal; }

  template <typename T>
  class PackedValueCheckResult {
  public:
    PackedValueCheckResult(RangeStatus status,
                           double diff,
                           double pcvalue,
                           double trackvalue,
                           double rangeMin,
                           double rangeMax,
                           const typename T::UnderOverflow& underOverflow)
        : diff_(diff),
          pcvalue_(pcvalue),
          trackvalue_(trackvalue),
          rangeMin_(rangeMin),
          rangeMax_(rangeMax),
          status_(status),
          underOverflow_(underOverflow) {}

    RangeStatus status() const { return status_; }
    double diff() const { return diff_; }

    bool outsideExpectedRange() const {
      if (status_ == RangeStatus::inrange)
        return diff_ < rangeMin_ || diff_ > rangeMax_;
      // denormal is considered as "in range" regardless of the expected range
      return status_ == RangeStatus::underflow_notOK || status_ == RangeStatus::overflow_notOK ||
             status_ == RangeStatus::inrange_signflip;
    }

    void print(std::ostream& os) const {
      if (outsideExpectedRange())
        os << "!! ";
      os << "(" << rangeMin_ << "," << rangeMax_ << ") ";

      os << diff_ << " " << pcvalue_;
      if (status_ == RangeStatus::underflow_OK || status_ == RangeStatus::underflow_notOK) {
        os << " (underflow) ";
        if (status_ == RangeStatus::underflow_notOK)
          underOverflow_.printNonOkUnderflow(os);
      } else if (status_ == RangeStatus::overflow_OK || status_ == RangeStatus::overflow_notOK) {
        os << " (overflow) ";
        if (status_ == RangeStatus::overflow_notOK)
          underOverflow_.printNonOkOverflow(os);
      } else if (status_ == RangeStatus::denormal)
        os << " (denormal)";
      os << " " << trackvalue_;
    }

  private:
    const double diff_;
    const double pcvalue_;
    const double trackvalue_;
    const double rangeMin_;
    const double rangeMax_;
    const RangeStatus status_;
    const typename T::UnderOverflow underOverflow_;
  };

  struct Range {
    Range(double mi, double ma) : min(mi), max(ma) {}
    const double min, max;
  };
  struct RangeAbs {
    RangeAbs(double val) : min(-val), max(val) {}
    const double min, max;
  };

  template <typename T>
  class PackedValueCheck {
  public:
    template <typename R, typename... Args>
    PackedValueCheck(const R& range, Args&&... args)
        : helper_(std::forward<Args>(args)...), rangeMin_(range.min), rangeMax_(range.max) {}

    void book(DQMStore::IBooker& iBooker,
              const std::string& name,
              const std::string& title,
              int nbins,
              double min,
              double max,
              int flow_nbins,
              double flow_min,
              double flow_max) {
      hInrange = iBooker.book1D(name, title, nbins, min, max);
      hUnderOverflowSign = iBooker.book1D(name + "UnderOverFlowSign",
                                          title + " with over- and underflow, and sign flip",
                                          flow_nbins,
                                          flow_min,
                                          flow_max);
      hStatus = iBooker.book1D(name + "Status", title + " status", 7, -0.5, 6.5);
      hStatus->setBinLabel(1, "In range");
      hStatus->setBinLabel(2, "In range, sign flip");
      hStatus->setBinLabel(3, "Denormal");
      hStatus->setBinLabel(4, "Underflow, PC is " + T::minName());
      hStatus->setBinLabel(5, "Underflow, PC is not " + T::minName());
      hStatus->setBinLabel(6, "Overflow, PC is " + T::maxName());
      hStatus->setBinLabel(7, "Overflow, PC is not " + T::maxName());
    }

    PackedValueCheckResult<T> fill(double pcvalue,
                                   double trackvalue,
                                   std::function<double(double)> modifyPack = std::function<double(double)>(),
                                   std::function<double(double)> modifyUnpack = std::function<double(double)>()) {
      const auto diff = diffRelative(pcvalue, trackvalue);

      const auto tmpSigned = modifyPack ? modifyPack(trackvalue) : trackvalue;
      const auto tmp = std::abs(tmpSigned);
      const auto underOverflow = helper_.underOverflowHelper(tmpSigned, modifyUnpack);
      RangeStatus status;
      if (tmp > helper_.largestValue()) {
        fillNoFlow(hUnderOverflowSign, diff);
        if (underOverflow.compatibleWithOverflow(std::abs(pcvalue))) {
          status = RangeStatus::overflow_OK;
        } else {
          status = RangeStatus::overflow_notOK;
        }
      } else if (helper_.lessThanSmallestValue(tmpSigned)) {
        fillNoFlow(hUnderOverflowSign, diff);
        if (underOverflow.compatibleWithUnderflow(std::abs(pcvalue))) {
          status = RangeStatus::underflow_OK;
        } else {
          status = RangeStatus::underflow_notOK;
        }
      } else {
        //Check if both numbers have same sign or both are zero.
        if (pcvalue * trackvalue > 0 || pcvalue == trackvalue) {
          if (T::wouldBeDenorm(tmp)) {
            status = RangeStatus::denormal;
          } else {
            status = RangeStatus::inrange;
          }
          fillNoFlow(hInrange, diff);
        } else {
          fillNoFlow(hUnderOverflowSign, diff);
          status = RangeStatus::inrange_signflip;
        }
      }
      hStatus->Fill(static_cast<int>(status));

      return PackedValueCheckResult<T>(status, diff, pcvalue, trackvalue, rangeMin_, rangeMax_, underOverflow);
    }

  private:
    const T helper_;
    const double rangeMin_;
    const double rangeMax_;

    MonitorElement* hInrange;
    MonitorElement* hUnderOverflowSign;
    MonitorElement* hStatus;
  };
  template <typename T>
  std::ostream& operator<<(std::ostream& os, const PackedValueCheckResult<T>& res) {
    res.print(os);
    return os;
  }
}  // namespace

class PackedCandidateTrackValidator : public DQMEDAnalyzer {
public:
  PackedCandidateTrackValidator(const edm::ParameterSet& pset);
  ~PackedCandidateTrackValidator() override;

  void bookHistograms(DQMStore::IBooker&, edm::Run const&, edm::EventSetup const&) override;
  void analyze(const edm::Event&, const edm::EventSetup&) override;

  static void fillDescriptions(edm::ConfigurationDescriptions& descriptions);

private:
  edm::EDGetTokenT<edm::View<reco::Track>> tracksToken_;
  edm::EDGetTokenT<reco::VertexCollection> verticesToken_;
  edm::EDGetTokenT<edm::Association<pat::PackedCandidateCollection>> trackToPackedCandidateToken_;

  std::string rootFolder_;
  bool debug_;

  enum {
    sf_AllTracks = 0,
    sf_AssociatedToPC = 1,
    sf_PCIsCharged = 2,
    sf_PCHasTrack = 3,
    sf_PCIsNotElectron = 4,
    sf_PCHasHits = 5,
    sf_PCNdofNot0 = 6,
    sf_NoMissingInnerHits = 7
  };
  MonitorElement* h_selectionFlow;

  MonitorElement* h_diffVx;
  MonitorElement* h_diffVy;
  MonitorElement* h_diffVz;

  MonitorElement* h_diffNormalizedChi2;
  MonitorElement* h_diffNdof;

  MonitorElement* h_diffCharge;
  MonitorElement* h_diffIsHighPurity;

  MonitorElement* h_diffPt;
  MonitorElement* h_diffEta;
  MonitorElement* h_diffPhi;
  PackedValueCheck<Float16Helper> h_diffDxyAssocPV;
  PackedValueCheck<Float16Helper> h_diffDzAssocPV;
  MonitorElement* h_diffDxyPV;
  MonitorElement* h_diffDzPV;

  MonitorElement* h_diffTrackDxyAssocPV;
  MonitorElement* h_diffTrackDzAssocPV;

  PackedValueCheck<LogIntHelper> h_diffCovQoverpQoverp;
  PackedValueCheck<LogIntHelper> h_diffCovLambdaLambda;
  PackedValueCheck<LogIntHelper> h_diffCovLambdaDsz;
  PackedValueCheck<LogIntHelper> h_diffCovPhiPhi;
  PackedValueCheck<LogIntHelper> h_diffCovPhiDxy;
  PackedValueCheck<Float16Helper> h_diffCovDxyDxy;
  PackedValueCheck<Float16Helper> h_diffCovDxyDsz;
  PackedValueCheck<Float16Helper> h_diffCovDszDsz;

  MonitorElement* h_diffDxyError;
  MonitorElement* h_diffDszError;
  MonitorElement* h_diffDzError;

  MonitorElement* h_diffTrackDxyError;
  MonitorElement* h_diffTrackDzError;

  MonitorElement* h_diffPtError;
  MonitorElement* h_diffEtaError;

  MonitorElement* h_diffNumberOfPixelLayers;
  MonitorElement* h_diffNumberOfStripLayers;
  MonitorElement* h_diffNumberOfPixelHits;
  MonitorElement* h_diffNumberOfHits;
  MonitorElement* h_diffLostInnerHits;

  MonitorElement* h_diffHitPatternPixelLayersWithMeasurement;
  MonitorElement* h_diffHitPatternTrackerLayersWithMeasurement;
  MonitorElement* h_diffHitPatternStripLayersWithMeasurement;
  MonitorElement* h_diffHitPatternNumberOfValidPixelHits;
  MonitorElement* h_diffHitPatternNumberOfValidHits;
  MonitorElement* h_diffHitPatternNumberOfLostInnerHits;
  MonitorElement* h_diffHitPatternHasValidHitInFirstPixelBarrel;

  MonitorElement* h_numberPixelLayersOverMax;
  MonitorElement* h_numberStripLayersOverMax;
  MonitorElement* h_numberLayersOverMax;
  MonitorElement* h_numberPixelHitsOverMax;
  MonitorElement* h_numberStripHitsOverMax;
  MonitorElement* h_numberHitsOverMax;
};

PackedCandidateTrackValidator::PackedCandidateTrackValidator(const edm::ParameterSet& iConfig)
    : tracksToken_(consumes<edm::View<reco::Track>>(iConfig.getUntrackedParameter<edm::InputTag>("tracks"))),
      verticesToken_(consumes<reco::VertexCollection>(iConfig.getUntrackedParameter<edm::InputTag>("vertices"))),
      trackToPackedCandidateToken_(consumes<edm::Association<pat::PackedCandidateCollection>>(
          iConfig.getUntrackedParameter<edm::InputTag>("trackToPackedCandidateAssociation"))),
      rootFolder_(iConfig.getUntrackedParameter<std::string>("rootFolder")),
      debug_(iConfig.getUntrackedParameter<bool>("debug")),
      h_diffDxyAssocPV(RangeAbs(0.001)),
      h_diffDzAssocPV(RangeAbs(0.001)),
      h_diffCovQoverpQoverp(Range(-1e-6, 0.13), -15, 0),  // despite of ceil in pack, there is rounding in double->float
      h_diffCovLambdaLambda(
          Range(-1e-6, 0.13), -20, -5),  // despite of ceil in pack, there is rounding in double->float
      h_diffCovLambdaDsz(RangeAbs(0.13), -17, -4),
      h_diffCovPhiPhi(RangeAbs(0.13), -15, 0),
      h_diffCovPhiDxy(RangeAbs(0.13), -17, -4),
      h_diffCovDxyDxy(RangeAbs(0.001)),
      h_diffCovDxyDsz(RangeAbs(0.001)),
      h_diffCovDszDsz(RangeAbs(0.001)) {}

PackedCandidateTrackValidator::~PackedCandidateTrackValidator() {}

void PackedCandidateTrackValidator::fillDescriptions(edm::ConfigurationDescriptions& descriptions) {
  edm::ParameterSetDescription desc;

  desc.addUntracked<edm::InputTag>("tracks", edm::InputTag("generalTracks"));
  desc.addUntracked<edm::InputTag>("vertices", edm::InputTag("offlinePrimaryVertices"));
  desc.addUntracked<edm::InputTag>("trackToPackedCandidateAssociation", edm::InputTag("packedPFCandidates"));
  desc.addUntracked<std::string>("rootFolder", "Tracking/PackedCandidate");
  desc.addUntracked<bool>("debug", false);

  descriptions.add("packedCandidateTrackValidator", desc);
}

void PackedCandidateTrackValidator::bookHistograms(DQMStore::IBooker& iBooker,
                                                   edm::Run const&,
                                                   edm::EventSetup const&) {
  iBooker.setCurrentFolder(rootFolder_);

  h_selectionFlow = iBooker.book1D("selectionFlow", "Track selection flow", 8, -0.5, 7.5);
  h_selectionFlow->setBinLabel(1, "All tracks");
  h_selectionFlow->setBinLabel(2, "Associated to PackedCandidate");
  h_selectionFlow->setBinLabel(3, "PC is charged"), h_selectionFlow->setBinLabel(4, "PC has track");
  h_selectionFlow->setBinLabel(5, "PC is not electron");
  h_selectionFlow->setBinLabel(6, "PC has hits");
  h_selectionFlow->setBinLabel(7, "PC ndof != 0");
  h_selectionFlow->setBinLabel(8, "Track: no missing inner hits");

  constexpr int diffBins = 50;

  h_diffVx =
      iBooker.book1D("diffVx", "PackedCandidate::bestTrack() - reco::Track in vx()", diffBins, -0.2, 0.2);  // not equal
  h_diffVy =
      iBooker.book1D("diffVy", "PackedCandidate::bestTrack() - reco::Track in vy()", diffBins, -0.2, 0.2);  // not equal
  h_diffVz =
      iBooker.book1D("diffVz", "PackedCandidate::bestTrack() - reco::Track in vz()", diffBins, -0.4, 0.4);  // not equal

  h_diffNormalizedChi2 = iBooker.book1D("diffNormalizedChi2",
                                        "PackedCandidate::bestTrack() - reco::Track in normalizedChi2()",
                                        30,
                                        -1.5,
                                        1.5);  // expected difference in -1...0
  h_diffNdof = iBooker.book1D(
      "diffNdof", "PackedCandidate::bestTrack() - reco::Track in ndof()", 33, -30.5, 2.5);  // to monitor the difference

  h_diffCharge = iBooker.book1D(
      "diffCharge", "PackedCandidate::bestTrack() - reco::Track in charge()", 5, -2.5, 2.5);  // expect equality
  h_diffIsHighPurity = iBooker.book1D("diffIsHighPurity",
                                      "PackedCandidate::bestTrack() - reco::Track in quality(highPurity)",
                                      3,
                                      -1.5,
                                      1.5);  // expect equality

  h_diffPt = iBooker.book1D("diffPt",
                            "(PackedCandidate::bestTrack() - reco::Track)/reco::Track in pt()",
                            diffBins,
                            -1.1,
                            1.1);  // not equal, keep
  h_diffEta = iBooker.book1D(
      "diffEta", "PackedCandidate::bestTrack() - reco::Track in eta()", diffBins, -0.001, 0.001);  // not equal, keep
  h_diffPhi = iBooker.book1D("diffPhi",
                             "PackedCandidate::bestTrack() - reco::Track in phi()",
                             diffBins,
                             -0.0005,
                             0.0005);  // expect equality within precision

  h_diffDxyAssocPV.book(iBooker,
                        "diffDxyAssocPV",
                        "(PackedCandidate::dxy() - reco::Track::dxy(assocPV))/reco::Track",
                        40,
                        -0.001,
                        0.001,  // expect equality within precision
                        50,
                        -0.5,
                        0.5);
  h_diffDzAssocPV.book(iBooker,
                       "diffDzAssocPV",
                       "(PackedCandidate::dzAssociatedPV() - reco::Track::dz(assocPV))/reco::Track",
                       40,
                       -0.001,
                       0.001,  // expect equality within precision
                       50,
                       -0.5,
                       0.5);
  h_diffDxyPV = iBooker.book1D("diffDxyPV",
                               "(PackedCandidate::dxy(PV) - reco::Track::dxy(PV))/reco::Track",
                               diffBins,
                               -0.01,
                               0.01);  // expect equality within precision (worse than assocPV)
  h_diffDzPV = iBooker.book1D("diffDzPV",
                              "(PackedCandidate::dz(PV) - reco::Track::dz(PV))/reco::Track",
                              diffBins,
                              -0.01,
                              0.01);  // expect equality wihtin precision (worse than assocPV)
  h_diffTrackDxyAssocPV =
      iBooker.book1D("diffTrackDxyAssocPV",
                     "(PackedCandidate::bestTrack()::dxy(assocPV)) - reco::Track::dxy(assocPV))/reco::Track",
                     diffBins,
                     -0.01,
                     0.01);  // not equal
  h_diffTrackDzAssocPV =
      iBooker.book1D("diffTrackDzAssocPV",
                     "(PackedCandidate::bestTrack()::dz(assocPV)) - reco::Track::dz(assocPV))/reco::Track",
                     diffBins,
                     -0.01,
                     0.01);  // not equal

  h_diffCovQoverpQoverp.book(iBooker,
                             "diffCovQoverpQoverp",
                             "(PackedCandidate::bestTrack() - reco::Track)/reco::track in cov(qoverp, qoverp)",
                             40,
                             -0.05,
                             0.15,  // expect equality within precision (worst precision is exp(1/128*15) =~ 12 %
                             50,
                             -0.5,
                             0.5);
  h_diffCovLambdaLambda.book(
      iBooker,
      "diffCovLambdaLambda",
      "(PackedCandidate::bestTrack() - reco::Track)/reco::Track in cov(lambda, lambda)",
      40,
      -0.05,
      0.15,  // expect equality within precision worst precision is exp(1/128*(20-5)) =~ 12 % (multiplied by pt^2 in packing & unpacking)
      50,
      -0.5,
      0.5);
  h_diffCovLambdaDsz.book(iBooker,
                          "diffCovLambdaDsz",
                          "(PackedCandidate::bestTrack() - reco::Track)/reco::Track in cov(lambda, dsz)",
                          60,
                          -0.15,
                          0.15,  // expect equality within precision, worst precision is exp(1/128*(17-4) =~ 11 %
                          50,
                          -1,
                          1);
  h_diffCovPhiPhi.book(
      iBooker,
      "diffCovPhiPhi",
      "(PackedCandidate::bestTrack() - reco::Track)/reco::Track in cov(phi, phi)",
      40,
      -0.05,
      0.15,  // expect equality within precision worst precision is exp(1/128*(20-5)) =~ 12 % (multiplied by pt^2 in packing & unpacking)
      50,
      -0.5,
      0.5);
  h_diffCovPhiDxy.book(iBooker,
                       "diffCovPhiDxy",
                       "(PackedCandidate::bestTrack() - reco::Track)/reco::Track in cov(phi, dxy)",
                       60,
                       -0.15,
                       0.15,  // expect equality within precision, wors precision is exp(1/128)*(17-4) =~ 11 %
                       50,
                       -1,
                       1);
  h_diffCovDxyDxy.book(iBooker,
                       "diffCovDxyDxy",
                       "(PackedCandidate::bestTrack() - reco::Track)/reco::Track in cov(dxy, dxy)",
                       40,
                       -0.001,
                       0.001,
                       50,
                       -0.1,
                       0.1);
  h_diffCovDxyDsz.book(iBooker,
                       "diffCovDxyDsz",
                       "(PackedCandidate::bestTrack() - reco::Track)/reco::Track in cov(dxy, dsz)",
                       40,
                       -0.001,
                       0.001,  // expect equality within precision
                       50,
                       -0.5,
                       0.5);
  h_diffCovDszDsz.book(iBooker,
                       "diffCovDszDsz",
                       "(PackedCandidate::bestTrack() - reco::Track)/reco::Track in cov(dsz, dsz)",
                       40,
                       -0.001,
                       0.001,  // expect equality within precision
                       50,
                       -0.1,
                       0.1);

  h_diffDxyError = iBooker.book1D("diffDxyError",
                                  "(PackedCandidate::dxyError() - reco::Track::dxyError())/reco::Track",
                                  40,
                                  -0.001,
                                  0.001);  // expect equality within precision
  h_diffDszError = iBooker.book1D("diffDszError",
                                  "(PackedCandidate::dzError() - reco::Track::dszError())/reco::Track",
                                  40,
                                  -0.001,
                                  0.001);  // ideally, not equal, but for now they are
  h_diffDzError = iBooker.book1D("diffDzError",
                                 "(PackedCandidate::dzError() - reco::Track::dzError())/reco::Track",
                                 40,
                                 -0.001,
                                 0.001);  // expect equality within precision (not currently the case)

  h_diffTrackDxyError = iBooker.book1D("diffTrackDxyError",
                                       "(PackedCandidate::bestTrack() - reco::Track)/reco::Track in dxyError()",
                                       40,
                                       -0.001,
                                       0.001);  // expect equality within precision
  h_diffTrackDzError = iBooker.book1D("diffTrackDzError",
                                      "(PackedCandidate::bestTrack() - reco::Track)/reco::Track in dzError()",
                                      40,
                                      -0.05,
                                      0.05);  // not equal

  h_diffPtError = iBooker.book1D("diffPtError",
                                 "(PackedCandidate::bestTrack() - reco::Track)/reco::Track in ptError()",
                                 diffBins,
                                 -1.1,
                                 1.1);  // not equal
  h_diffEtaError = iBooker.book1D("diffEtaError",
                                  "(PackedCandidate::bestTrack() - reco::Track)/reco::Track in etaError()",
                                  60,
                                  -0.15,
                                  0.15);  // not equal

  h_diffNumberOfPixelLayers = iBooker.book1D(
      "diffNumberOfPixelLayers",
      "PackedCandidate::pixelLayersWithMeasurement() - reco::Track::hitPattern::pixelLayersWithMeasurement()",
      5,
      -2.5,
      2.5);  // expect equality
  h_diffNumberOfStripLayers = iBooker.book1D(
      "diffNumberOfStripLayers",
      "PackedCandidate::stripLayersWithMeasurement() - reco::Track::hitPattern::stripLayersWithMeasurement()",
      5,
      -2.5,
      2.5);  // expect equality
  h_diffNumberOfPixelHits =
      iBooker.book1D("diffNumberOfPixelHits",
                     "PackedCandidate::numberOfPixelHits() - reco::Track::hitPattern::numberOfValidPixelHits()",
                     5,
                     -2.5,
                     2.5);  // expect equality
  h_diffNumberOfHits = iBooker.book1D("diffNumberOfHits",
                                      "PackedCandidate::numberHits() - reco::Track::hitPattern::numberOfValidHits()",
                                      5,
                                      -2.5,
                                      2.5);  // expect equality
  h_diffLostInnerHits =
      iBooker.book1D("diffLostInnerHits",
                     "PackedCandidate::lostInnerHits() - reco::Track::hitPattern::numberOfLostHits(MISSING_INNER_HITS)",
                     5,
                     -2.5,
                     2.5);  // expect equality

  h_diffHitPatternPixelLayersWithMeasurement =
      iBooker.book1D("diffHitPatternPixelLayersWithMeasurement",
                     "PackedCandidate::bestTrack() - reco::Track in hitPattern::pixelLayersWithMeasurement()",
                     13,
                     -10.5,
                     2.5);  // not equal
  h_diffHitPatternStripLayersWithMeasurement =
      iBooker.book1D("diffHitPatternStripLayersWithMeasurement",
                     "PackedCandidate::bestTrack() - reco::Track in hitPattern::stripLayersWithMeasurement()",
                     13,
                     -10.5,
                     2.5);  // not equal
  h_diffHitPatternTrackerLayersWithMeasurement =
      iBooker.book1D("diffHitPatternTrackerLayersWithMeasurement",
                     "PackedCandidate::bestTrack() - reco::Track in hitPattern::trackerLayersWithMeasurement()",
                     13,
                     -10.5,
                     2.5);  // not equal
  h_diffHitPatternNumberOfValidPixelHits =
      iBooker.book1D("diffHitPatternNumberOfValidPixelHits",
                     "PackedCandidate::bestTrack() - reco::Track in hitPattern::numberOfValidPixelHits()",
                     13,
                     -10.5,
                     2.5);  // not equal
  h_diffHitPatternNumberOfValidHits =
      iBooker.book1D("diffHitPatternNumberOfValidHits",
                     "PackedCandidate::bestTrack() - reco::Track in hitPattern::numberOfValidHits()",
                     13,
                     -10.5,
                     2.5);  // not equal
  h_diffHitPatternNumberOfLostInnerHits =
      iBooker.book1D("diffHitPatternNumberOfLostPixelHits",
                     "PackedCandidate::bestTrack() - reco::Track in hitPattern::numberOfLostHits(MISSING_INNER_HITS)",
                     13,
                     -10.5,
                     2.5);  // not equal
  h_diffHitPatternHasValidHitInFirstPixelBarrel =
      iBooker.book1D("diffHitPatternHasValidHitInFirstPixelBarrel",
                     "PackedCandidate::bestTrack() - reco::Track in hitPattern::hasValidHitInFirstPixelBarrel",
                     3,
                     -1.5,
                     1.5);  // expect equality

  h_numberPixelLayersOverMax = iBooker.book1D(
      "numberPixelLayersOverMax", "Number of pixel layers over the maximum of PackedCandidate", 10, 0, 10);
  h_numberStripLayersOverMax = iBooker.book1D(
      "numberStripLayersOverMax", "Number of strip layers over the maximum of PackedCandidate", 10, 0, 10);
  h_numberLayersOverMax =
      iBooker.book1D("numberLayersOverMax", "Number of layers over the maximum of PackedCandidate", 20, 0, 20);
  h_numberPixelHitsOverMax =
      iBooker.book1D("numberPixelHitsOverMax", "Number of pixel hits over the maximum of PackedCandidate", 10, 0, 10);
  h_numberStripHitsOverMax =
      iBooker.book1D("numberStripHitsOverMax", "Number of strip hits over the maximum of PackedCandidate", 10, 0, 10);
  h_numberHitsOverMax =
      iBooker.book1D("numberHitsOverMax", "Number of hits over the maximum of PackedCandidate", 20, 0, 20);
}

void PackedCandidateTrackValidator::analyze(const edm::Event& iEvent, const edm::EventSetup& iSetup) {
  edm::Handle<edm::View<reco::Track>> htracks;
  iEvent.getByToken(tracksToken_, htracks);
  const auto& tracks = *htracks;

  edm::Handle<reco::VertexCollection> hvertices;
  iEvent.getByToken(verticesToken_, hvertices);
  const auto& vertices = *hvertices;

  if (vertices.empty())
    return;
  const reco::Vertex& pv = vertices[0];

  edm::Handle<edm::Association<pat::PackedCandidateCollection>> hassoc;
  iEvent.getByToken(trackToPackedCandidateToken_, hassoc);
  const auto& trackToPackedCandidate = *hassoc;

  for (size_t i = 0; i < tracks.size(); ++i) {
    auto trackPtr = tracks.ptrAt(i);
    const reco::Track& track = *trackPtr;
    h_selectionFlow->Fill(sf_AllTracks);

    pat::PackedCandidateRef pcRef = trackToPackedCandidate[trackPtr];
    if (pcRef.isNull()) {
      continue;
    }
    h_selectionFlow->Fill(sf_AssociatedToPC);

    // Filter out neutral PackedCandidates, some of them may have track associated, and for those the charge comparison fails
    if (pcRef->charge() == 0) {
      continue;
    }
    h_selectionFlow->Fill(sf_PCIsCharged);

    const reco::Track* trackPcPtr = pcRef->bestTrack();
    if (!trackPcPtr) {
      continue;
    }
    h_selectionFlow->Fill(sf_PCHasTrack);

    // Filter out electrons to avoid comparisons to PackedCandidates with GsfTrack
    if (std::abs(pcRef->pdgId()) == 11) {
      continue;
    }
    h_selectionFlow->Fill(sf_PCIsNotElectron);

    // Filter out PackedCandidate-tracks with no hits, as they won't have their details filled
    const reco::Track& trackPc = *trackPcPtr;
    if (trackPc.hitPattern().numberOfValidHits() == 0) {
      continue;
    }
    h_selectionFlow->Fill(sf_PCHasHits);

    auto slimmedVertexRef = pcRef->vertexRef();
    const reco::Vertex& pcVertex = vertices[slimmedVertexRef.key()];

    fillNoFlow(h_diffVx, trackPc.vx() - track.vx());
    fillNoFlow(h_diffVy, trackPc.vy() - track.vy());
    fillNoFlow(h_diffVz, trackPc.vz() - track.vz());

    // PackedCandidate recalculates the ndof in unpacking as
    // (nhits+npixelhits-5), but some strip hits may have dimension 2.
    // If PackedCandidate has ndof=0, the resulting normalizedChi2
    // will be 0 too. Hence, the comparison makes sense only for those
    // PackedCandidates that have ndof != 0.
    double diffNormalizedChi2 = 0;
    if (trackPc.ndof() != 0) {
      h_selectionFlow->Fill(sf_PCNdofNot0);
      diffNormalizedChi2 = trackPc.normalizedChi2() - track.normalizedChi2();
      fillNoFlow(h_diffNormalizedChi2, diffNormalizedChi2);
    }
    fillNoFlow(h_diffNdof, trackPc.ndof() - track.ndof());

    auto diffCharge = trackPc.charge() - track.charge();
    fillNoFlow(h_diffCharge, diffCharge);
    int diffHP = static_cast<int>(trackPc.quality(reco::TrackBase::highPurity)) -
                 static_cast<int>(track.quality(reco::TrackBase::highPurity));
    fillNoFlow(h_diffIsHighPurity, diffHP);

    const auto diffPt = diffRelative(trackPc.pt(), track.pt());
    const auto diffPhi = reco::deltaPhi(trackPc.phi(), track.phi());
    fillNoFlow(h_diffPt, diffPt);
    fillNoFlow(h_diffEta, trackPc.eta() - track.eta());
    fillNoFlow(h_diffPhi, diffPhi);

    const auto diffDxyAssocPV =
        h_diffDxyAssocPV.fill(pcRef->dxy(), track.dxy(pcVertex.position()), [](double value) { return value * 100.; });
    const auto diffDzAssocPV = h_diffDzAssocPV.fill(
        pcRef->dzAssociatedPV(), track.dz(pcVertex.position()), [](double value) { return value * 100.; });
    const auto diffDxyPV = diffRelative(pcRef->dxy(pv.position()), track.dxy(pv.position()));
    const auto diffDzPV = diffRelative(pcRef->dz(pv.position()), track.dz(pv.position()));
    fillNoFlow(h_diffDxyPV, diffDxyPV);
    fillNoFlow(h_diffDzPV, diffDzPV);
    fillNoFlow(h_diffTrackDxyAssocPV, diffRelative(trackPc.dxy(pcVertex.position()), track.dxy(pcVertex.position())));
    fillNoFlow(h_diffTrackDzAssocPV, diffRelative(trackPc.dz(pcVertex.position()), track.dz(pcVertex.position())));

    auto fillCov1 = [&](auto& hlp, const int i, const int j) {
      return hlp.fill(trackPc.covariance(i, j), track.covariance(i, j));
    };
    auto fillCov2 = [&](auto& hlp, const int i, const int j, std::function<double(double)> modifyPack) {
      return hlp.fill(trackPc.covariance(i, j), track.covariance(i, j), modifyPack);
    };
    auto fillCov3 = [&](auto& hlp,
                        const int i,
                        const int j,
                        std::function<double(double)> modifyPack,
                        std::function<double(double)> modifyUnpack) {
      return hlp.fill(trackPc.covariance(i, j), track.covariance(i, j), modifyPack, modifyUnpack);
    };

    const auto pcPt = pcRef->pt();
    const auto diffCovQoverpQoverp = fillCov3(
        h_diffCovQoverpQoverp,
        reco::TrackBase::i_qoverp,
        reco::TrackBase::i_qoverp,
        [=](double val) { return val * pcPt * pcPt; },
        [=](double val) { return val / pcPt / pcPt; });
    const auto diffCovLambdaLambda =
        fillCov1(h_diffCovLambdaLambda, reco::TrackBase::i_lambda, reco::TrackBase::i_lambda);
    const auto diffCovLambdaDsz = fillCov1(h_diffCovLambdaDsz, reco::TrackBase::i_lambda, reco::TrackBase::i_dsz);
    const auto diffCovPhiPhi = fillCov3(
        h_diffCovPhiPhi,
        reco::TrackBase::i_phi,
        reco::TrackBase::i_phi,
        [=](double val) { return val * pcPt * pcPt; },
        [=](double val) { return val / pcPt / pcPt; });
    const auto diffCovPhiDxy = fillCov1(h_diffCovPhiDxy, reco::TrackBase::i_phi, reco::TrackBase::i_dxy);
    const auto diffCovDxyDxy = fillCov2(
        h_diffCovDxyDxy, reco::TrackBase::i_dxy, reco::TrackBase::i_dxy, [](double value) { return value * 10000.; });
    const auto diffCovDxyDsz = fillCov2(
        h_diffCovDxyDsz, reco::TrackBase::i_dxy, reco::TrackBase::i_dsz, [](double value) { return value * 10000.; });
    const auto diffCovDszDsz = fillCov2(
        h_diffCovDszDsz, reco::TrackBase::i_dsz, reco::TrackBase::i_dsz, [](double value) { return value * 10000.; });

    if (isInRange(diffCovDszDsz.status())) {
      fillNoFlow(h_diffDszError, diffRelative(pcRef->dzError(), track.dszError()));
      fillNoFlow(h_diffDzError, diffRelative(pcRef->dzError(), track.dzError()));
      fillNoFlow(h_diffTrackDzError, diffRelative(trackPc.dzError(), track.dzError()));
    }
    if (isInRange(diffCovDxyDxy.status())) {
      fillNoFlow(h_diffDxyError, diffRelative(pcRef->dxyError(), track.dxyError()));
      fillNoFlow(h_diffTrackDxyError, diffRelative(trackPc.dxyError(), track.dxyError()));
    }
    fillNoFlow(h_diffPtError, diffRelative(trackPc.ptError(), track.ptError()));
    fillNoFlow(h_diffEtaError, diffRelative(trackPc.etaError(), track.etaError()));

    // For the non-HitPattern ones, take into account the PackedCandidate packing precision
    const auto trackNumberOfHits = track.hitPattern().numberOfValidHits();
    const auto trackNumberOfPixelHits = track.hitPattern().numberOfValidPixelHits();
    const auto trackNumberOfStripHits = track.hitPattern().numberOfValidStripHits();
    const auto pcNumberOfHits = pcRef->numberOfHits();
    const auto pcNumberOfPixelHits = pcRef->numberOfPixelHits();
    const auto pcNumberOfStripHits = pcNumberOfHits - pcNumberOfPixelHits;
    const auto trackNumberOfLayers = track.hitPattern().trackerLayersWithMeasurement();
    const auto trackNumberOfPixelLayers = track.hitPattern().pixelLayersWithMeasurement();
    const auto trackNumberOfStripLayers = track.hitPattern().stripLayersWithMeasurement();
    const auto pcNumberOfLayers = pcRef->trackerLayersWithMeasurement();
    const auto pcNumberOfPixelLayers = pcRef->pixelLayersWithMeasurement();
    const auto pcNumberOfStripLayers = pcRef->stripLayersWithMeasurement();

    // layer number overflow (should be zero)
    const int pixelLayerOverflow = trackNumberOfPixelLayers > pat::PackedCandidate::trackPixelHitsMask
                                       ? trackNumberOfPixelLayers - pat::PackedCandidate::trackPixelHitsMask
                                       : 0;
    const int stripLayerOverflow = trackNumberOfStripLayers > pat::PackedCandidate::trackStripHitsMask
                                       ? trackNumberOfStripLayers - pat::PackedCandidate::trackStripHitsMask
                                       : 0;
    const int layerOverflow =
        trackNumberOfLayers > (pat::PackedCandidate::trackPixelHitsMask + pat::PackedCandidate::trackStripHitsMask)
            ? trackNumberOfLayers -
                  (pat::PackedCandidate::trackPixelHitsMask + pat::PackedCandidate::trackStripHitsMask)
            : 0;

    // hit overflow (should also be zero)
    const int pixelOverflow =
        trackNumberOfPixelHits - pcNumberOfPixelLayers > pat::PackedCandidate::trackPixelHitsMask
            ? trackNumberOfPixelHits - pcNumberOfPixelLayers - pat::PackedCandidate::trackPixelHitsMask
            : 0;
    const int stripOverflow =
        trackNumberOfStripHits - pcNumberOfStripLayers > pat::PackedCandidate::trackStripHitsMask
            ? trackNumberOfStripHits - pcNumberOfStripLayers - pat::PackedCandidate::trackStripHitsMask
            : 0;
    const int hitsOverflow =
        trackNumberOfHits - pcNumberOfLayers >
                (pat::PackedCandidate::trackPixelHitsMask + pat::PackedCandidate::trackStripHitsMask)
            ? trackNumberOfHits - pcNumberOfLayers -
                  (pat::PackedCandidate::trackPixelHitsMask + pat::PackedCandidate::trackStripHitsMask)
            : 0;
    // PackedCandidate counts overflow pixel hits as strip
    const int pixelInducedStripOverflow =
        (trackNumberOfStripHits + pixelOverflow - pcNumberOfStripLayers) > pat::PackedCandidate::trackStripHitsMask
            ? (trackNumberOfStripHits + pixelOverflow - stripOverflow - pcNumberOfStripLayers) -
                  pat::PackedCandidate::trackStripHitsMask
            : 0;
    h_numberPixelLayersOverMax->Fill(pixelLayerOverflow);
    h_numberStripLayersOverMax->Fill(stripLayerOverflow);
    h_numberLayersOverMax->Fill(layerOverflow);
    h_numberPixelHitsOverMax->Fill(pixelOverflow);
    h_numberStripHitsOverMax->Fill(stripOverflow);
    h_numberHitsOverMax->Fill(hitsOverflow);

    int diffNumberOfPixelHits = 0;
    int diffNumberOfHits = 0;
    int diffNumberOfPixelLayers = 0;
    int diffNumberOfStripLayers = 0;
    if (pixelLayerOverflow) {
      diffNumberOfPixelLayers = pcNumberOfPixelLayers - pat::PackedCandidate::trackPixelHitsMask;
    } else {
      diffNumberOfPixelLayers = pcNumberOfPixelLayers - trackNumberOfPixelLayers;
    }
    if (pixelOverflow) {
      diffNumberOfPixelHits = pcNumberOfPixelHits - pcNumberOfPixelLayers - pat::PackedCandidate::trackPixelHitsMask;
    } else {
      diffNumberOfPixelHits = pcNumberOfPixelHits - trackNumberOfPixelHits;
    }
    if (stripLayerOverflow) {
      diffNumberOfStripLayers = pcNumberOfStripLayers - pat::PackedCandidate::trackStripHitsMask;
    } else {
      diffNumberOfStripLayers = pcNumberOfStripLayers - trackNumberOfStripLayers;
    }
    if (stripOverflow || pixelInducedStripOverflow || pixelOverflow) {
      int diffNumberOfStripHits = 0;
      if (stripOverflow || pixelInducedStripOverflow) {
        diffNumberOfStripHits = pcNumberOfStripHits - pat::PackedCandidate::trackStripHitsMask;
      } else if (pixelOverflow) {
        diffNumberOfStripHits = (pcNumberOfStripHits - pixelOverflow) - trackNumberOfStripHits;
      }

      diffNumberOfHits = diffNumberOfPixelHits + diffNumberOfStripHits;
    } else {
      diffNumberOfHits = pcNumberOfHits - trackNumberOfHits;
    }

    fillNoFlow(h_diffNumberOfPixelHits, diffNumberOfPixelHits);
    fillNoFlow(h_diffNumberOfHits, diffNumberOfHits);
    fillNoFlow(h_diffNumberOfPixelLayers, diffNumberOfPixelLayers);
    fillNoFlow(h_diffNumberOfStripLayers, diffNumberOfStripLayers);

    int diffLostInnerHits = 0;
    const auto trackLostInnerHits = track.hitPattern().numberOfLostHits(reco::HitPattern::MISSING_INNER_HITS);
    switch (pcRef->lostInnerHits()) {
      case pat::PackedCandidate::validHitInFirstPixelBarrelLayer:
      case pat::PackedCandidate::noLostInnerHits:
        diffLostInnerHits = -trackLostInnerHits;
        break;
      case pat::PackedCandidate::oneLostInnerHit:
        diffLostInnerHits = 1 - trackLostInnerHits;
        break;
      case pat::PackedCandidate::moreLostInnerHits:
        diffLostInnerHits = trackLostInnerHits >= 2 ? 0 : 2 - trackLostInnerHits;
        break;
    }
    fillNoFlow(h_diffLostInnerHits, diffLostInnerHits);

    // For HitPattern ones, calculate the full diff (i.e. some differences are expected)
    auto diffHitPatternPixelLayersWithMeasurement =
        trackPc.hitPattern().pixelLayersWithMeasurement() - trackNumberOfPixelLayers;
    fillNoFlow(h_diffHitPatternPixelLayersWithMeasurement, diffHitPatternPixelLayersWithMeasurement);
    auto diffHitPatternStripLayersWithMeasurement =
        trackPc.hitPattern().stripLayersWithMeasurement() - trackNumberOfStripLayers;
    fillNoFlow(h_diffHitPatternStripLayersWithMeasurement, diffHitPatternStripLayersWithMeasurement);
    auto diffHitPatternTrackerLayersWithMeasurement =
        trackPc.hitPattern().trackerLayersWithMeasurement() - trackNumberOfLayers;
    fillNoFlow(h_diffHitPatternTrackerLayersWithMeasurement, diffHitPatternTrackerLayersWithMeasurement);
    auto diffHitPatternNumberOfValidPixelHits = trackPc.hitPattern().numberOfValidPixelHits() - trackNumberOfPixelHits;
    fillNoFlow(h_diffHitPatternNumberOfValidPixelHits, diffHitPatternNumberOfValidPixelHits);
    auto diffHitPatternNumberOfValidHits = trackPc.hitPattern().numberOfValidHits() - trackNumberOfHits;
    fillNoFlow(h_diffHitPatternNumberOfValidHits, diffHitPatternNumberOfValidHits);
    fillNoFlow(h_diffHitPatternNumberOfLostInnerHits,
               trackPc.hitPattern().numberOfLostHits(reco::HitPattern::MISSING_INNER_HITS) -
                   track.hitPattern().numberOfLostHits(reco::HitPattern::MISSING_INNER_HITS));

    // hasValidHitInFirstPixelBarrel is set only if numberOfLostHits(MISSING_INNER_HITS) == 0
    int diffHitPatternHasValidHitInFirstPixelBarrel = 0;
    if (track.hitPattern().numberOfLostHits(reco::HitPattern::MISSING_INNER_HITS) == 0) {
      h_selectionFlow->Fill(sf_NoMissingInnerHits);
      diffHitPatternHasValidHitInFirstPixelBarrel =
          static_cast<int>(
              trackPc.hitPattern().hasValidHitInPixelLayer(PixelSubdetector::SubDetector::PixelBarrel, 1)) -
          static_cast<int>(track.hitPattern().hasValidHitInPixelLayer(PixelSubdetector::SubDetector::PixelBarrel, 1));
      fillNoFlow(h_diffHitPatternHasValidHitInFirstPixelBarrel, diffHitPatternHasValidHitInFirstPixelBarrel);
    }

    // Print warning if there are differences outside the expected range
    if (debug_ &&
        (diffNormalizedChi2 < -1 || diffNormalizedChi2 > 0 || diffCharge != 0 || diffHP != 0 ||
         std::abs(diffPhi) > 5e-4 || diffDxyAssocPV.outsideExpectedRange() || diffDzAssocPV.outsideExpectedRange() ||
         std::abs(diffDxyPV) > 0.05 || std::abs(diffDzPV) > 0.05 || diffCovQoverpQoverp.outsideExpectedRange() ||
         diffCovLambdaLambda.outsideExpectedRange() || diffCovLambdaDsz.outsideExpectedRange() ||
         diffCovPhiPhi.outsideExpectedRange() || diffCovPhiDxy.outsideExpectedRange() ||
         diffCovDxyDxy.outsideExpectedRange() || diffCovDxyDsz.outsideExpectedRange() ||
         diffCovDszDsz.outsideExpectedRange() || diffNumberOfPixelHits != 0 || diffNumberOfHits != 0 ||
         diffLostInnerHits != 0 || diffHitPatternHasValidHitInFirstPixelBarrel != 0)) {
      edm::LogInfo("PackedCandidateTrackValidator")
          << "Track " << i << " pt " << track.pt() << " eta " << track.eta() << " phi " << track.phi() << " chi2 "
          << track.chi2() << " ndof " << track.ndof() << "\n"
          << "  ptError " << track.ptError() << " etaError " << track.etaError() << " phiError " << track.phiError()
          << " dxyError " << track.dxyError() << " dzError " << track.dzError() << "\n"
          << "  refpoint " << track.referencePoint() << " momentum " << track.momentum() << "\n"
          << "  dxy " << track.dxy() << " dz " << track.dz() << "\n"
          << "  " << TrackAlgoPrinter(track) << " lost inner hits " << trackLostInnerHits << " lost outer hits "
          << track.hitPattern().numberOfLostHits(reco::HitPattern::MISSING_OUTER_HITS) << " hitpattern "
          << HitPatternPrinter(track) << " \n"
          << " PC " << pcRef.id() << ":" << pcRef.key() << " track pt " << trackPc.pt() << " eta " << trackPc.eta()
          << " phi " << trackPc.phi() << " (PC " << pcRef->phi() << ") chi2 " << trackPc.chi2() << " ndof "
          << trackPc.ndof() << " pdgId " << pcRef->pdgId() << " mass " << pcRef->mass() << "\n"
          << "  ptError " << trackPc.ptError() << " etaError " << trackPc.etaError() << " phiError "
          << trackPc.phiError() << "\n"
          << "  pc.vertex " << pcRef->vertex() << " momentum " << pcRef->momentum() << " track " << trackPc.momentum()
          << "\n"
          << "  dxy " << trackPc.dxy() << " dz " << trackPc.dz() << " pc.dz " << pcRef->dz() << " dxyError "
          << trackPc.dxyError() << " dzError " << trackPc.dzError() << "\n"
          << "  dxy(PV) " << trackPc.dxy(pv.position()) << " dz(PV) " << trackPc.dz(pv.position()) << " dxy(assocPV) "
          << trackPc.dxy(pcVertex.position()) << " dz(assocPV) " << trackPc.dz(pcVertex.position()) << "\n"
          << " (diff PackedCandidate track)"
          << " highPurity " << diffHP << " " << trackPc.quality(reco::TrackBase::highPurity) << " "
          << track.quality(reco::TrackBase::highPurity) << " charge " << diffCharge << " " << trackPc.charge() << " "
          << track.charge() << " normalizedChi2 " << diffNormalizedChi2 << " " << trackPc.normalizedChi2() << " "
          << track.normalizedChi2() << "\n "
          << " numberOfAllHits " << diffNumberOfHits << " " << pcNumberOfHits << " " << trackNumberOfHits
          << " numberOfPixelHits " << diffNumberOfPixelHits << " " << pcNumberOfPixelHits << " "
          << trackNumberOfPixelHits << " numberOfStripHits # " << pcNumberOfStripHits << " " << trackNumberOfStripHits
          << "\n "
          << " hitPattern.numberOfValidPixelHits " << diffHitPatternNumberOfValidPixelHits << " "
          << trackPc.hitPattern().numberOfValidPixelHits() << " " << track.hitPattern().numberOfValidPixelHits()
          << " hitPattern.numberOfValidHits " << diffHitPatternNumberOfValidHits << " "
          << trackPc.hitPattern().numberOfValidHits() << " " << track.hitPattern().numberOfValidHits()
          << " hitPattern.hasValidHitInFirstPixelBarrel " << diffHitPatternHasValidHitInFirstPixelBarrel << " "
          << trackPc.hitPattern().hasValidHitInPixelLayer(PixelSubdetector::SubDetector::PixelBarrel, 1) << " "
          << track.hitPattern().hasValidHitInPixelLayer(PixelSubdetector::SubDetector::PixelBarrel, 1) << "\n "
          << " lostInnerHits  " << diffLostInnerHits << " " << pcRef->lostInnerHits() << " #"
          << " phi (5e-4) " << diffPhi << " " << trackPc.phi() << " " << track.phi() << "\n "
          << " dxy(assocPV) " << diffDxyAssocPV << "\n "
          << " dz(assocPV) " << diffDzAssocPV << "\n "
          << " dxy(PV) (0.05) " << diffDxyPV << " " << pcRef->dxy(pv.position()) << " " << track.dxy(pv.position())
          << "\n "
          << " dz(PV) (0.05) " << diffDzPV << " " << pcRef->dz(pv.position()) << " " << track.dz(pv.position()) << "\n "
          << " cov(qoverp, qoverp)  " << diffCovQoverpQoverp << "\n "
          << " cov(lambda, lambda) " << diffCovLambdaLambda << "\n "
          << " cov(lambda, dsz) " << diffCovLambdaDsz << "\n "
          << " cov(phi, phi) " << diffCovPhiPhi << "\n "
          << " cov(phi, dxy) " << diffCovPhiDxy << "\n "
          << " cov(dxy, dxy) " << diffCovDxyDxy << "\n "
          << " cov(dxy, dsz) " << diffCovDxyDsz << "\n "
          << " cov(dsz, dsz) " << diffCovDszDsz;
    }
  }
}

#include "FWCore/Framework/interface/MakerMacros.h"
DEFINE_FWK_MODULE(PackedCandidateTrackValidator);