SiStripCommissioningAnalysis/src/FedTimingAlgorithm.cc

0001 #include "DQM/SiStripCommissioningAnalysis/interface/FedTimingAlgorithm.h"
0002 #include "CondFormats/SiStripObjects/interface/FedTimingAnalysis.h"
0003 #include "DataFormats/SiStripCommon/interface/SiStripHistoTitle.h"
0004 #include "DataFormats/SiStripCommon/interface/SiStripEnumsAndStrings.h"
0005 #include "FWCore/MessageLogger/interface/MessageLogger.h"
0006 #include "TProfile.h"
0007 #include "TH1.h"
0008 #include <iostream>
0009 #include <iomanip>
0010 #include <cmath>
0011
0012 using namespace sistrip;
0013
0014 // ----------------------------------------------------------------------------
0015 //
0016 FedTimingAlgorithm::FedTimingAlgorithm(const edm::ParameterSet& pset, FedTimingAnalysis* const anal)
0017     : CommissioningAlgorithm(anal), histo_(nullptr, "") {
0018   ;
0019 }
0020
0021 // ----------------------------------------------------------------------------
0022 //
0023 void FedTimingAlgorithm::extract(const std::vector<TH1*>& histos) {
0024   if (!anal()) {
0025     edm::LogWarning(mlCommissioning_) << "[FedTimingAlgorithm::" << __func__ << "]"
0026                                       << " NULL pointer to Analysis object!";
0027     return;
0028   }
0029
0030   // Check number of histograms
0031   if (histos.size() != 1) {
0032     anal()->addErrorCode(sistrip::numberOfHistos_);
0033   }
0034
0035   // Extract FED key from histo title
0036   if (!histos.empty()) {
0037     anal()->fedKey(extractFedKey(histos.front()));
0038   }
0039
0040   // Extract histograms
0041   std::vector<TH1*>::const_iterator ihis = histos.begin();
0042   for (; ihis != histos.end(); ihis++) {
0043     // Check for NULL pointer
0044     if (!(*ihis)) {
0045       continue;
0046     }
0047
0048     // Check name
0049     SiStripHistoTitle title((*ihis)->GetName());
0050     if (title.runType() != sistrip::FED_TIMING) {
0051       anal()->addErrorCode(sistrip::unexpectedTask_);
0052       continue;
0053     }
0054
0055     // Extract timing histo
0056     histo_.first = *ihis;
0057     histo_.second = (*ihis)->GetName();
0058   }
0059 }
0060
0061 // ----------------------------------------------------------------------------
0062 //
0063 void FedTimingAlgorithm::analyse() {
0064   if (!anal()) {
0065     edm::LogWarning(mlCommissioning_) << "[FedTimingAlgorithm::" << __func__ << "]"
0066                                       << " NULL pointer to base Analysis object!";
0067     return;
0068   }
0069
0070   CommissioningAnalysis* tmp = const_cast<CommissioningAnalysis*>(anal());
0071   FedTimingAnalysis* anal = dynamic_cast<FedTimingAnalysis*>(tmp);
0072   if (!anal) {
0073     edm::LogWarning(mlCommissioning_) << "[FedTimingAlgorithm::" << __func__ << "]"
0074                                       << " NULL pointer to derived Analysis object!";
0075     return;
0076   }
0077
0078   if (!histo_.first) {
0079     anal->addErrorCode(sistrip::nullPtr_);
0080     return;
0081   }
0082
0083   // Transfer histogram contents/errors/stats to containers
0084   float max = -1.e9;
0085   float min = 1.e9;
0086   uint16_t nbins = static_cast<uint16_t>(histo_.first->GetNbinsX());
0087   std::vector<float> bin_contents;
0088   std::vector<float> bin_errors;
0089   std::vector<float> bin_entries;
0090   bin_contents.reserve(nbins);
0091   bin_errors.reserve(nbins);
0092   bin_entries.reserve(nbins);
0093   for (uint16_t ibin = 0; ibin < nbins; ibin++) {
0094     bin_contents.push_back(histo_.first->GetBinContent(ibin + 1));
0095     bin_errors.push_back(histo_.first->GetBinError(ibin + 1));
0096     //bin_entries.push_back( histo_.first->GetBinEntries(ibin+1) );
0097     if (bin_entries[ibin]) {
0098       if (bin_contents[ibin] > max) {
0099         max = bin_contents[ibin];
0100       }
0101       if (bin_contents[ibin] < min) {
0102         min = bin_contents[ibin];
0103       }
0104     }
0105   }
0106
0107   if (bin_contents.size() < 100) {
0108     anal->addErrorCode(sistrip::numberOfBins_);
0109     return;
0110   }
0111
0112   // Calculate range (max-min) and threshold level (range/2)
0113   float range = max - min;
0114   float threshold = min + range / 2.;
0115   if (range < 50.) {
0116     anal->addErrorCode(sistrip::smallDataRange_);
0117     return;
0118   }
0119   //LogTrace(mlCommissioning_) << " ADC samples: max/min/range/threshold: "
0120   //<< max << "/" << min << "/" << range << "/" << threshold;
0121
0122   // Associate samples with either "tick mark" or "baseline"
0123   std::vector<float> tick;
0124   std::vector<float> base;
0125   for (uint16_t ibin = 0; ibin < nbins; ibin++) {
0126     if (bin_entries[ibin]) {
0127       if (bin_contents[ibin] < threshold) {
0128         base.push_back(bin_contents[ibin]);
0129       } else {
0130         tick.push_back(bin_contents[ibin]);
0131       }
0132     }
0133   }
0134   //LogTrace(mlCommissioning_) << " Number of 'tick mark' samples: " << tick.size()
0135   //<< " Number of 'baseline' samples: " << base.size();
0136
0137   // Find median level of tick mark and baseline
0138   float tickmark = 0.;
0139   float baseline = 0.;
0140   sort(tick.begin(), tick.end());
0141   sort(base.begin(), base.end());
0142   if (!tick.empty()) {
0143     tickmark = tick[tick.size() % 2 ? tick.size() / 2 : tick.size() / 2];
0144   }
0145   if (!base.empty()) {
0146     baseline = base[base.size() % 2 ? base.size() / 2 : base.size() / 2];
0147   }
0148   //LogTrace(mlCommissioning_) << " Tick mark level: " << tickmark << " Baseline level: " << baseline
0149   //<< " Range: " << (tickmark-baseline);
0150   if ((tickmark - baseline) < 50.) {
0151     anal->addErrorCode(sistrip::smallDataRange_);
0152     return;
0153   }
0154
0155   // Find rms spread in "baseline" samples
0156   float mean = 0.;
0157   float mean2 = 0.;
0158   for (uint16_t ibin = 0; ibin < base.size(); ibin++) {
0159     mean += base[ibin];
0160     mean2 += base[ibin] * base[ibin];
0161   }
0162   if (!base.empty()) {
0163     mean = mean / base.size();
0164     mean2 = mean2 / base.size();
0165   } else {
0166     mean = 0.;
0167     mean2 = 0.;
0168   }
0169   float baseline_rms = 0.;
0170   if (mean2 > mean * mean) {
0171     baseline_rms = sqrt(mean2 - mean * mean);
0172   } else {
0173     baseline_rms = 0.;
0174   }
0175   //LogTrace(mlCommissioning_) << " Spread in baseline samples: " << baseline_rms;
0176
0177   // Find rising edges (derivative across two bins > range/2)
0178   std::map<uint16_t, float> edges;
0179   for (uint16_t ibin = 1; ibin < nbins - 1; ibin++) {
0180     if (bin_entries[ibin + 1] && bin_entries[ibin - 1]) {
0181       float derivative = bin_contents[ibin + 1] - bin_contents[ibin - 1];
0182       if (derivative > 5. * baseline_rms) {
0183         edges[ibin] = derivative;
0184         //LogTrace(mlCommissioning_) << " Found edge #" << edges.size() << " at bin " << ibin
0185         //<< " and with derivative " << derivative;
0186       }
0187     }
0188   }
0189
0190   // Iterate through "edges" std::map
0191   bool found = false;
0192   uint16_t deriv_bin = sistrip::invalid_;
0193   float max_deriv = -1. * sistrip::invalid_;
0194   std::map<uint16_t, float>::iterator iter = edges.begin();
0195   while (!found && iter != edges.end()) {
0196     // Iterate through 50 subsequent samples
0197     bool valid = true;
0198     for (uint16_t ii = 0; ii < 50; ii++) {
0199       uint16_t bin = iter->first + ii;
0200
0201       // Calc local derivative
0202       float temp_deriv = 0;
0203       if (static_cast<uint32_t>(bin) < 1 || static_cast<uint32_t>(bin + 1) >= nbins) {
0204         continue;
0205       }
0206       temp_deriv = bin_contents[bin + 1] - bin_contents[bin - 1];
0207
0208       // Store max derivative
0209       if (temp_deriv > max_deriv) {
0210         max_deriv = temp_deriv;
0211         deriv_bin = bin;
0212       }
0213
0214       // Check if samples following edge are all "high"
0215       if (ii > 10 && ii < 40 && bin_entries[bin] && bin_contents[bin] < baseline + 5 * baseline_rms) {
0216         valid = false;
0217       }
0218     }
0219
0220     // Break from loop if tick mark found
0221     if (valid) {
0222       found = true;
0223     } else {
0224       max_deriv = -1. * sistrip::invalid_;
0225       deriv_bin = sistrip::invalid_;
0226       edges.erase(iter);
0227     }
0228
0229     iter++;
0230   }
0231
0232   // Set monitorables (but not PLL coarse and fine here)
0233   if (!edges.empty()) {
0234     anal->time_ = deriv_bin;
0235     anal->error_ = 0.;
0236     anal->base_ = baseline;
0237     anal->peak_ = tickmark;
0238     anal->height_ = tickmark - baseline;
0239   } else {
0240     anal->addErrorCode(sistrip::missingTickMark_);
0241     anal->base_ = baseline;
0242     anal->peak_ = tickmark;
0243     anal->height_ = tickmark - baseline;
0244   }
0245 }