SiPixelDigitizerAlgorithm.cc

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//class SiPixelDigitizerAlgorithm SimTracker/SiPixelDigitizer/src/SiPixelDigitizerAlgoithm.cc
 
// Original Author Danek Kotlinski
// Ported in CMSSW by  Michele Pioppi-INFN perugia
// Added DB capabilities by F.Blekman, Cornell University
//         Created:  Mon Sep 26 11:08:32 CEST 2005
// Add tof, change AddNoise to tracked. 4/06
// Change drift direction. 6/06 d.k.
// Add the statuis (non-rate dependent) inefficiency.
//     -1 - no ineffciency
//      0 - static inefficency only
//    1,2 - low-lumi rate dependent inefficency added
//     10 - high-lumi inefficiency added
// Adopt the correct drift sign convetion from Morris Swartz. d.k. 8/06
// Add more complex misscalinbration, change kev/e to 3.61, diff=3.7,d.k.9/06
// Add the readout channel electronic noise. d.k. 3/07
// Lower the pixel noise from 500 to 175elec.
// Change the input threshold from noise units to electrons.
// Lower the amount of static dead pixels from 0.01 to 0.001.
// Modify to the new random number services. d.k. 5/07
// Protect against sigma=0 (delta tracks on the surface). d.k.5/07
// Change the TOF cut to lower and upper limit. d.k. 7/07
//
// July 2008: Split Lorentz Angle configuration in BPix/FPix (V. Cuplov)
// tanLorentzAngleperTesla_FPix=0.0912 and tanLorentzAngleperTesla_BPix=0.106
// Sept. 2008: Disable Pixel modules which are declared dead in the configuration python file. (V. Cuplov)
// Oct. 2008: Accessing/Reading the Lorentz angle from the DataBase instead of the cfg file. (V. Cuplov)
// Accessing dead modules from the DB. Implementation done and tested on a test.db
// Do not use this option for now. The PixelQuality Objects are not in the official DB yet.
// Feb. 2009: Split Fpix and Bpix threshold and use official numbers (V. Cuplov)
// ThresholdInElectrons_FPix = 2870 and ThresholdInElectrons_BPix = 3700
// update the electron to VCAL conversion using: VCAL_electrons = VCAL * 65.5 - 414
// Feb. 2009: Threshold gaussian smearing (V. Cuplov)
// March, 2009: changed DB access to *SimRcd objects (to de-couple the DB objects from reco chain) (F. Blekman)
// May, 2009: Pixel charge VCAL smearing. (V. Cuplov)
// November, 2009: new parameterization of the pixel response. (V. Cuplov)
// December, 2009: Fix issue with different compilers.
// October, 2010: Improvement: Removing single dead ROC (V. Cuplov)
// November, 2010: Bug fix in removing TBMB/A half-modules (V. Cuplov)
// February, 2011: Time improvement in DriftDirection()  (J. Bashir Butt)
// June, 2011: Bug Fix for pixels on ROC edges in module_killing_DB() (J. Bashir Butt)
// February, 2018: Implement cluster charge reweighting (P. Schuetze, with code from A. Hazi)
#include <iostream>
#include <iomanip>
 
#include "SimGeneral/NoiseGenerators/interface/GaussianTailNoiseGenerator.h"
 
#include "DataFormats/SiPixelDigi/interface/PixelDigi.h"
#include "SimDataFormats/TrackerDigiSimLink/interface/PixelDigiSimLink.h"
#include "SimDataFormats/TrackingHit/interface/PSimHitContainer.h"
#include "SimTracker/Common/interface/SiG4UniversalFluctuation.h"
#include "SiPixelDigitizerAlgorithm.h"
 
#include <gsl/gsl_sf_erf.h>
#include "FWCore/Utilities/interface/RandomNumberGenerator.h"
#include "CLHEP/Random/RandGaussQ.h"
#include "CLHEP/Random/RandFlat.h"
#include "CLHEP/Random/RandGeneral.h"
 
//#include "PixelIndices.h"
#include "DataFormats/SiPixelDetId/interface/PixelSubdetector.h"
#include "DataFormats/TrackerCommon/interface/TrackerTopology.h"
#include "Geometry/Records/interface/IdealGeometryRecord.h"
 
#include "FWCore/MessageLogger/interface/MessageLogger.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "FWCore/ServiceRegistry/interface/Service.h"
#include "FWCore/Utilities/interface/Exception.h"
#include "CalibTracker/SiPixelESProducers/interface/SiPixelGainCalibrationOfflineSimService.h"
 
// Accessing dead pixel modules from the DB:
#include "DataFormats/DetId/interface/DetId.h"
 
#include "CondFormats/SiPixelObjects/interface/GlobalPixel.h"
 
#include "CondFormats/DataRecord/interface/SiPixelQualityRcd.h"
#include "CondFormats/DataRecord/interface/SiPixelFedCablingMapRcd.h"
#include "CondFormats/DataRecord/interface/SiPixelLorentzAngleSimRcd.h"
#include "CondFormats/DataRecord/interface/SiPixelDynamicInefficiencyRcd.h"
#include "CondFormats/DataRecord/interface/SiPixelStatusScenarioProbabilityRcd.h"
#include "CondFormats/DataRecord/interface/SiPixelStatusScenariosRcd.h"
#include "CondFormats/DataRecord/interface/SiPixel2DTemplateDBObjectRcd.h"
 
#include "CondFormats/SiPixelObjects/interface/SiPixelFedCablingMap.h"
#include "CondFormats/SiPixelObjects/interface/SiPixelFedCablingTree.h"
#include "CondFormats/SiPixelObjects/interface/SiPixelFedCabling.h"
#include "CondFormats/SiPixelObjects/interface/PixelIndices.h"
#include "CondFormats/SiPixelObjects/interface/SiPixelLorentzAngle.h"
#include "CondFormats/SiPixelObjects/interface/SiPixelQuality.h"
#include "CondFormats/SiPixelObjects/interface/PixelROC.h"
#include "CondFormats/SiPixelObjects/interface/LocalPixel.h"
#include "CondFormats/SiPixelObjects/interface/CablingPathToDetUnit.h"
#include "CondFormats/SiPixelObjects/interface/SiPixelDynamicInefficiency.h"
#include "CondFormats/SiPixelObjects/interface/SiPixelFEDChannelContainer.h"
#include "CondFormats/SiPixelObjects/interface/SiPixelQualityProbabilities.h"
#include "CondFormats/SiPixelObjects/interface/SiPixel2DTemplateDBObject.h"
 
#include "CondFormats/SiPixelObjects/interface/SiPixelFrameReverter.h"
#include "CondFormats/SiPixelObjects/interface/PixelFEDCabling.h"
#include "CondFormats/SiPixelObjects/interface/PixelFEDLink.h"
#include "DataFormats/FEDRawData/interface/FEDNumbering.h"
#include "SimDataFormats/PileupSummaryInfo/interface/PileupMixingContent.h"
#include "SimDataFormats/Track/interface/SimTrack.h"
 
// Geometry
#include "Geometry/TrackerGeometryBuilder/interface/TrackerGeometry.h"
#include "Geometry/Records/interface/TrackerDigiGeometryRecord.h"
#include "Geometry/CommonDetUnit/interface/PixelGeomDetUnit.h"
 
#include "CondFormats/SiPixelObjects/interface/PixelROC.h"
 
using namespace edm;
using namespace sipixelobjects;
 
void SiPixelDigitizerAlgorithm::init(const edm::EventSetup& es) {
  if (use_ineff_from_db_) {  // load gain calibration service fromdb...
    theSiPixelGainCalibrationService_->setESObjects(es);
  }
  if (use_deadmodule_DB_) {
    es.get<SiPixelQualityRcd>().get(siPixelQualityLabel, SiPixelBadModule_);
  }
  if (use_LorentzAngle_DB_) {
    // Get Lorentz angle from DB record
    es.get<SiPixelLorentzAngleSimRcd>().get(SiPixelLorentzAngle_);
  }
  //gets the map and geometry from the DB (to kill ROCs)
  es.get<SiPixelFedCablingMapRcd>().get(map_);
  es.get<TrackerDigiGeometryRecord>().get(geom_);
 
  if (KillBadFEDChannels) {
    es.get<SiPixelStatusScenarioProbabilityRcd>().get(scenarioProbabilityHandle);
    es.get<SiPixelFEDChannelContainerESProducerRcd>().get(PixelFEDChannelCollectionMapHandle);
    quality_map = PixelFEDChannelCollectionMapHandle.product();
 
    SiPixelQualityProbabilities::probabilityMap m_probabilities = scenarioProbabilityHandle->getProbability_Map();
    std::vector<std::string> allScenarios;
 
    std::transform(quality_map->begin(),
                   quality_map->end(),
                   std::back_inserter(allScenarios),
                   [](const PixelFEDChannelCollectionMap::value_type& pair) { return pair.first; });
 
    std::vector<std::string> allScenariosInProb;
 
    for (auto it = m_probabilities.begin(); it != m_probabilities.end(); ++it) {
      //int PUbin = it->first;
      for (const auto& entry : it->second) {
        auto scenario = entry.first;
        auto probability = entry.second;
        if (probability != 0) {
          if (std::find(allScenariosInProb.begin(), allScenariosInProb.end(), scenario) == allScenariosInProb.end()) {
            allScenariosInProb.push_back(scenario);
          }
        }  // if prob!=0
      }    // loop on the scenarios for that PU bin
    }      // loop on PU bins
 
    std::vector<std::string> notFound;
    std::copy_if(allScenariosInProb.begin(),
                 allScenariosInProb.end(),
                 std::back_inserter(notFound),
                 [&allScenarios](const std::string& arg) {
                   return (std::find(allScenarios.begin(), allScenarios.end(), arg) == allScenarios.end());
                 });
 
    if (!notFound.empty()) {
      for (const auto& entry : notFound) {
        edm::LogError("SiPixelFEDChannelContainer")
            << "The requested scenario: " << entry << " is not found in the map!!" << std::endl;
      }
      throw cms::Exception("SiPixelDigitizerAlgorithm") << "Found: " << notFound.size()
                                                        << " missing scenario(s) in SiPixelStatusScenariosRcd while "
                                                           "present in SiPixelStatusScenarioProbabilityRcd \n";
    }
  }
 
  // Read template files for charge reweighting
  if (UseReweighting) {
    edm::ESHandle<SiPixel2DTemplateDBObject> SiPixel2DTemp_den;
    es.get<SiPixel2DTemplateDBObjectRcd>().get("denominator", SiPixel2DTemp_den);
    dbobject_den = SiPixel2DTemp_den.product();
 
    edm::ESHandle<SiPixel2DTemplateDBObject> SiPixel2DTemp_num;
    es.get<SiPixel2DTemplateDBObjectRcd>().get("numerator", SiPixel2DTemp_num);
    dbobject_num = SiPixel2DTemp_num.product();
 
    int numOfTemplates = dbobject_den->numOfTempl() + dbobject_num->numOfTempl();
    templateStores_.reserve(numOfTemplates);
    SiPixelTemplate2D::pushfile(*dbobject_den, templateStores_);
    SiPixelTemplate2D::pushfile(*dbobject_num, templateStores_);
 
    track.resize(6);
  }
}
 
//=========================================================================
 
SiPixelDigitizerAlgorithm::SiPixelDigitizerAlgorithm(const edm::ParameterSet& conf)
    :
 
      siPixelQualityLabel(
          conf.getParameter<std::string>("SiPixelQualityLabel")),  //string to specify SiPixelQuality label
      _signal(),
      makeDigiSimLinks_(conf.getUntrackedParameter<bool>("makeDigiSimLinks", true)),
      use_ineff_from_db_(conf.getParameter<bool>("useDB")),
      use_module_killing_(conf.getParameter<bool>("killModules")),       // boolean to kill or not modules
      use_deadmodule_DB_(conf.getParameter<bool>("DeadModules_DB")),     // boolean to access dead modules from DB
      use_LorentzAngle_DB_(conf.getParameter<bool>("LorentzAngle_DB")),  // boolean to access Lorentz angle from DB
 
      DeadModules(use_deadmodule_DB_ ? Parameters()
                                     : conf.getParameter<Parameters>("DeadModules")),  // get dead module from cfg file
 
      templ2D(templateStores_),
      xdouble(TXSIZE),
      ydouble(TYSIZE),
      IDnum(conf.exists("TemplateIDnumerator") ? conf.getParameter<int>("TemplateIDnumerator") : 0),
      IDden(conf.exists("TemplateIDdenominator") ? conf.getParameter<int>("TemplateIDdenominator") : 0),
 
      // Common pixel parameters
      // These are parameters which are not likely to be changed
      GeVperElectron(3.61E-09),                             // 1 electron(3.61eV, 1keV(277e, mod 9/06 d.k.
      Sigma0(0.00037),                                      // Charge diffusion constant 7->3.7
      Dist300(0.0300),                                      //   normalized to 300micron Silicon
      alpha2Order(conf.getParameter<bool>("Alpha2Order")),  // switch on/off of E.B effect
      ClusterWidth(3.),                                     // Charge integration spread on the collection plane
 
      // get external parameters:
      // To account for upgrade geometries do not assume the number
      // of layers or disks.
      NumberOfBarrelLayers(conf.exists("NumPixelBarrel") ? conf.getParameter<int>("NumPixelBarrel") : 3),
      NumberOfEndcapDisks(conf.exists("NumPixelEndcap") ? conf.getParameter<int>("NumPixelEndcap") : 2),
 
      // ADC calibration 1adc count(135e.
      // Corresponds to 2adc/kev, 270[e/kev]/135[e/adc](2[adc/kev]
      // Be carefull, this parameter is also used in SiPixelDet.cc to
      // calculate the noise in adc counts from noise in electrons.
      // Both defaults should be the same.
      theElectronPerADC(conf.getParameter<double>("ElectronPerAdc")),
 
      // ADC saturation value, 255(8bit adc.
      //theAdcFullScale(conf.getUntrackedParameter<int>("AdcFullScale",255)),
      theAdcFullScale(conf.getParameter<int>("AdcFullScale")),
 
      // Noise in electrons:
      // Pixel cell noise, relevant for generating noisy pixels
      theNoiseInElectrons(conf.getParameter<double>("NoiseInElectrons")),
 
      // Fill readout noise, including all readout chain, relevant for smearing
      //theReadoutNoise(conf.getUntrackedParameter<double>("ReadoutNoiseInElec",500.)),
      theReadoutNoise(conf.getParameter<double>("ReadoutNoiseInElec")),
 
      // Pixel threshold in units of noise:
      // thePixelThreshold(conf.getParameter<double>("ThresholdInNoiseUnits")),
      // Pixel threshold in electron units.
      theThresholdInE_FPix(conf.getParameter<double>("ThresholdInElectrons_FPix")),
      theThresholdInE_BPix(conf.getParameter<double>("ThresholdInElectrons_BPix")),
      theThresholdInE_BPix_L1(conf.exists("ThresholdInElectrons_BPix_L1")
                                  ? conf.getParameter<double>("ThresholdInElectrons_BPix_L1")
                                  : theThresholdInE_BPix),
      theThresholdInE_BPix_L2(conf.exists("ThresholdInElectrons_BPix_L2")
                                  ? conf.getParameter<double>("ThresholdInElectrons_BPix_L2")
                                  : theThresholdInE_BPix),
 
      // Add threshold gaussian smearing:
      theThresholdSmearing_FPix(conf.getParameter<double>("ThresholdSmearing_FPix")),
      theThresholdSmearing_BPix(conf.getParameter<double>("ThresholdSmearing_BPix")),
      theThresholdSmearing_BPix_L1(conf.exists("ThresholdSmearing_BPix_L1")
                                       ? conf.getParameter<double>("ThresholdSmearing_BPix_L1")
                                       : theThresholdSmearing_BPix),
      theThresholdSmearing_BPix_L2(conf.exists("ThresholdSmearing_BPix_L2")
                                       ? conf.getParameter<double>("ThresholdSmearing_BPix_L2")
                                       : theThresholdSmearing_BPix),
 
      // electrons to VCAL conversion needed in misscalibrate()
      electronsPerVCAL(conf.getParameter<double>("ElectronsPerVcal")),
      electronsPerVCAL_Offset(conf.getParameter<double>("ElectronsPerVcal_Offset")),
      electronsPerVCAL_L1(conf.exists("ElectronsPerVcal_L1") ? conf.getParameter<double>("ElectronsPerVcal_L1")
                                                             : electronsPerVCAL),
      electronsPerVCAL_L1_Offset(conf.exists("ElectronsPerVcal_L1_Offset")
                                     ? conf.getParameter<double>("ElectronsPerVcal_L1_Offset")
                                     : electronsPerVCAL_Offset),
 
      //theTofCut 12.5, cut in particle TOD +/- 12.5ns
      //theTofCut(conf.getUntrackedParameter<double>("TofCut",12.5)),
      theTofLowerCut(conf.getParameter<double>("TofLowerCut")),
      theTofUpperCut(conf.getParameter<double>("TofUpperCut")),
 
      // Get the Lorentz angle from the cfg file:
      tanLorentzAnglePerTesla_FPix(use_LorentzAngle_DB_ ? 0.0
                                                        : conf.getParameter<double>("TanLorentzAnglePerTesla_FPix")),
      tanLorentzAnglePerTesla_BPix(use_LorentzAngle_DB_ ? 0.0
                                                        : conf.getParameter<double>("TanLorentzAnglePerTesla_BPix")),
 
      // signal response new parameterization: split Fpix and BPix
      FPix_p0(conf.getParameter<double>("FPix_SignalResponse_p0")),
      FPix_p1(conf.getParameter<double>("FPix_SignalResponse_p1")),
      FPix_p2(conf.getParameter<double>("FPix_SignalResponse_p2")),
      FPix_p3(conf.getParameter<double>("FPix_SignalResponse_p3")),
 
      BPix_p0(conf.getParameter<double>("BPix_SignalResponse_p0")),
      BPix_p1(conf.getParameter<double>("BPix_SignalResponse_p1")),
      BPix_p2(conf.getParameter<double>("BPix_SignalResponse_p2")),
      BPix_p3(conf.getParameter<double>("BPix_SignalResponse_p3")),
 
      // Add noise
      addNoise(conf.getParameter<bool>("AddNoise")),
 
      // Smear the pixel charge with a gaussian which RMS is a function of the
      // pixel charge (Danek's study)
      addChargeVCALSmearing(conf.getParameter<bool>("ChargeVCALSmearing")),
 
      // Add noisy pixels
      addNoisyPixels(conf.getParameter<bool>("AddNoisyPixels")),
 
      // Fluctuate charge in track subsegments
      fluctuateCharge(conf.getUntrackedParameter<bool>("FluctuateCharge", true)),
 
      // Control the pixel inefficiency
      AddPixelInefficiency(conf.getParameter<bool>("AddPixelInefficiency")),
      KillBadFEDChannels(conf.getParameter<bool>("KillBadFEDChannels")),
 
      // Add threshold gaussian smearing:
      addThresholdSmearing(conf.getParameter<bool>("AddThresholdSmearing")),
 
      // Get the constants for the miss-calibration studies
      doMissCalibrate(conf.getParameter<bool>("MissCalibrate")),       // Enable miss-calibration
      theGainSmearing(conf.getParameter<double>("GainSmearing")),      // sigma of the gain smearing
      theOffsetSmearing(conf.getParameter<double>("OffsetSmearing")),  //sigma of the offset smearing
 
      // Add pixel radiation damage for upgrade studies
      AddPixelAging(conf.getParameter<bool>("DoPixelAging")),
      UseReweighting(conf.getParameter<bool>("UseReweighting")),
      PrintClusters(conf.getParameter<bool>("PrintClusters")),
      PrintTemplates(conf.getParameter<bool>("PrintTemplates")),
 
      // delta cutoff in MeV, has to be same as in OSCAR(0.030/cmsim=1.0 MeV
      //tMax(0.030), // In MeV.
      //tMax(conf.getUntrackedParameter<double>("deltaProductionCut",0.030)),
      tMax(conf.getParameter<double>("deltaProductionCut")),
 
      fluctuate(fluctuateCharge ? new SiG4UniversalFluctuation() : nullptr),
      theNoiser(addNoise ? new GaussianTailNoiseGenerator() : nullptr),
      calmap(doMissCalibrate ? initCal() : std::map<int, CalParameters, std::less<int> >()),
      theSiPixelGainCalibrationService_(use_ineff_from_db_ ? new SiPixelGainCalibrationOfflineSimService(conf)
                                                           : nullptr),
      pixelEfficiencies_(conf, AddPixelInefficiency, NumberOfBarrelLayers, NumberOfEndcapDisks),
      pixelAging_(conf, AddPixelAging, NumberOfBarrelLayers, NumberOfEndcapDisks) {
  LogInfo("PixelDigitizer ") << "SiPixelDigitizerAlgorithm constructed"
                             << "Configuration parameters:"
                             << "Threshold/Gain = "
                             << "threshold in electron FPix = " << theThresholdInE_FPix
                             << "threshold in electron BPix = " << theThresholdInE_BPix
                             << "threshold in electron BPix Layer1 = " << theThresholdInE_BPix_L1
                             << "threshold in electron BPix Layer2 = " << theThresholdInE_BPix_L2 << " "
                             << theElectronPerADC << " " << theAdcFullScale << " The delta cut-off is set to " << tMax
                             << " pix-inefficiency " << AddPixelInefficiency;
}
 
std::map<int, SiPixelDigitizerAlgorithm::CalParameters, std::less<int> > SiPixelDigitizerAlgorithm::initCal() const {
  using std::cerr;
  using std::cout;
  using std::endl;
 
  std::map<int, SiPixelDigitizerAlgorithm::CalParameters, std::less<int> > calmap;
  // Prepare for the analog amplitude miss-calibration
  LogDebug("PixelDigitizer ") << " miss-calibrate the pixel amplitude ";
 
  const bool ReadCalParameters = false;
  if (ReadCalParameters) {  // Read the calibration files from file
    // read the calibration constants from a file (testing only)
    std::ifstream in_file;  // data file pointer
    char filename[80] = "phCalibrationFit_C0.dat";
 
    in_file.open(filename, std::ios::in);  // in C++
    if (in_file.bad()) {
      cout << " File not found " << endl;
      return calmap;  // signal error
    }
    cout << " file opened : " << filename << endl;
 
    char line[500];
    for (int i = 0; i < 3; i++) {
      in_file.getline(line, 500, '\n');
      cout << line << endl;
    }
 
    cout << " test map" << endl;
 
    float par0, par1, par2, par3;
    int colid, rowid;
    std::string name;
    // Read MC tracks
    for (int i = 0; i < (52 * 80); i++) {  // loop over tracks
      in_file >> par0 >> par1 >> par2 >> par3 >> name >> colid >> rowid;
      if (in_file.bad()) {  // check for errors
        cerr << "Cannot read data file" << endl;
        return calmap;
      }
      if (in_file.eof() != 0) {
        cerr << in_file.eof() << " " << in_file.gcount() << " " << in_file.fail() << " " << in_file.good()
             << " end of file " << endl;
        return calmap;
      }
 
      //cout << " line " << i << " " <<par0<<" "<<par1<<" "<<par2<<" "<<par3<<" "
      //   <<colid<<" "<<rowid<<endl;
 
      CalParameters onePix;
      onePix.p0 = par0;
      onePix.p1 = par1;
      onePix.p2 = par2;
      onePix.p3 = par3;
 
      // Convert ROC pixel index to channel
      int chan = PixelIndices::pixelToChannelROC(rowid, colid);
      calmap.insert(std::pair<int, CalParameters>(chan, onePix));
 
      // Testing the index conversion, can be skipped
      std::pair<int, int> p = PixelIndices::channelToPixelROC(chan);
      if (rowid != p.first)
        cout << " wrong channel row " << rowid << " " << p.first << endl;
      if (colid != p.second)
        cout << " wrong channel col " << colid << " " << p.second << endl;
 
    }  // pixel loop in a ROC
 
    cout << " map size  " << calmap.size() << " max " << calmap.max_size() << " " << calmap.empty() << endl;
 
    //     cout << " map size  " << calmap.size()  << endl;
    //     map<int,CalParameters,std::less<int> >::iterator ix,it;
    //     map<int,CalParameters,std::less<int> >::const_iterator ip;
    //     for (ix = calmap.begin(); ix != calmap.end(); ++ix) {
    //       int i = (*ix).first;
    //       std::pair<int,int> p = channelToPixelROC(i);
    //       it  = calmap.find(i);
    //       CalParameters y  = (*it).second;
    //       CalParameters z = (*ix).second;
    //       cout << i <<" "<<p.first<<" "<<p.second<<" "<<y.p0<<" "<<z.p0<<" "<<calmap[i].p0<<endl;
 
    //       //int dummy=0;
    //       //cin>>dummy;
    //     }
 
  }  // end if readparameters
  return calmap;
}  // end initCal()
 
//=========================================================================
SiPixelDigitizerAlgorithm::~SiPixelDigitizerAlgorithm() {
  LogDebug("PixelDigitizer") << "SiPixelDigitizerAlgorithm deleted";
}
 
// Read DynIneff Scale factors from Configuration
SiPixelDigitizerAlgorithm::PixelEfficiencies::PixelEfficiencies(const edm::ParameterSet& conf,
                                                                bool AddPixelInefficiency,
                                                                int NumberOfBarrelLayers,
                                                                int NumberOfEndcapDisks) {
  // pixel inefficiency
  // Don't use Hard coded values, read inefficiencies in from DB/python config or don't use any
  int NumberOfTotLayers = NumberOfBarrelLayers + NumberOfEndcapDisks;
  FPixIndex = NumberOfBarrelLayers;
  if (AddPixelInefficiency) {
    FromConfig = conf.exists("thePixelColEfficiency_BPix1") && conf.exists("thePixelColEfficiency_BPix2") &&
                 conf.exists("thePixelColEfficiency_BPix3") && conf.exists("thePixelColEfficiency_FPix1") &&
                 conf.exists("thePixelColEfficiency_FPix2") && conf.exists("thePixelEfficiency_BPix1") &&
                 conf.exists("thePixelEfficiency_BPix2") && conf.exists("thePixelEfficiency_BPix3") &&
                 conf.exists("thePixelEfficiency_FPix1") && conf.exists("thePixelEfficiency_FPix2") &&
                 conf.exists("thePixelChipEfficiency_BPix1") && conf.exists("thePixelChipEfficiency_BPix2") &&
                 conf.exists("thePixelChipEfficiency_BPix3") && conf.exists("thePixelChipEfficiency_FPix1") &&
                 conf.exists("thePixelChipEfficiency_FPix2");
    if (NumberOfBarrelLayers == 3)
      FromConfig = FromConfig && conf.exists("theLadderEfficiency_BPix1") && conf.exists("theLadderEfficiency_BPix2") &&
                   conf.exists("theLadderEfficiency_BPix3") && conf.exists("theModuleEfficiency_BPix1") &&
                   conf.exists("theModuleEfficiency_BPix2") && conf.exists("theModuleEfficiency_BPix3") &&
                   conf.exists("thePUEfficiency_BPix1") && conf.exists("thePUEfficiency_BPix2") &&
                   conf.exists("thePUEfficiency_BPix3") && conf.exists("theInnerEfficiency_FPix1") &&
                   conf.exists("theInnerEfficiency_FPix2") && conf.exists("theOuterEfficiency_FPix1") &&
                   conf.exists("theOuterEfficiency_FPix2") && conf.exists("thePUEfficiency_FPix_Inner") &&
                   conf.exists("thePUEfficiency_FPix_Outer") && conf.exists("theInstLumiScaleFactor");
    if (NumberOfBarrelLayers >= 4)
      FromConfig = FromConfig && conf.exists("thePixelColEfficiency_BPix4") &&
                   conf.exists("thePixelEfficiency_BPix4") && conf.exists("thePixelChipEfficiency_BPix4");
    if (NumberOfEndcapDisks >= 3)
      FromConfig = FromConfig && conf.exists("thePixelColEfficiency_FPix4") &&
                   conf.exists("thePixelEfficiency_FPix3") && conf.exists("thePixelChipEfficiency_FPix3");
    if (FromConfig) {
      LogInfo("PixelDigitizer ") << "The PixelDigitizer inefficiency configuration is read from the config file.\n";
      theInstLumiScaleFactor = conf.getParameter<double>("theInstLumiScaleFactor");
      int i = 0;
      thePixelColEfficiency[i++] = conf.getParameter<double>("thePixelColEfficiency_BPix1");
      thePixelColEfficiency[i++] = conf.getParameter<double>("thePixelColEfficiency_BPix2");
      thePixelColEfficiency[i++] = conf.getParameter<double>("thePixelColEfficiency_BPix3");
      if (NumberOfBarrelLayers >= 4) {
        thePixelColEfficiency[i++] = conf.getParameter<double>("thePixelColEfficiency_BPix4");
      }
      //
      i = 0;
      thePixelEfficiency[i++] = conf.getParameter<double>("thePixelEfficiency_BPix1");
      thePixelEfficiency[i++] = conf.getParameter<double>("thePixelEfficiency_BPix2");
      thePixelEfficiency[i++] = conf.getParameter<double>("thePixelEfficiency_BPix3");
      if (NumberOfBarrelLayers >= 4) {
        thePixelEfficiency[i++] = conf.getParameter<double>("thePixelEfficiency_BPix4");
      }
      //
      i = 0;
      thePixelChipEfficiency[i++] = conf.getParameter<double>("thePixelChipEfficiency_BPix1");
      thePixelChipEfficiency[i++] = conf.getParameter<double>("thePixelChipEfficiency_BPix2");
      thePixelChipEfficiency[i++] = conf.getParameter<double>("thePixelChipEfficiency_BPix3");
      if (NumberOfBarrelLayers >= 4) {
        thePixelChipEfficiency[i++] = conf.getParameter<double>("thePixelChipEfficiency_BPix4");
      }
      //
      if (NumberOfBarrelLayers == 3) {
        i = 0;
        theLadderEfficiency_BPix[i++] = conf.getParameter<std::vector<double> >("theLadderEfficiency_BPix1");
        theLadderEfficiency_BPix[i++] = conf.getParameter<std::vector<double> >("theLadderEfficiency_BPix2");
        theLadderEfficiency_BPix[i++] = conf.getParameter<std::vector<double> >("theLadderEfficiency_BPix3");
        if (((theLadderEfficiency_BPix[0].size() != 20) || (theLadderEfficiency_BPix[1].size() != 32) ||
             (theLadderEfficiency_BPix[2].size() != 44)) &&
            (NumberOfBarrelLayers == 3))
          throw cms::Exception("Configuration") << "Wrong ladder number in efficiency config!";
        //
        i = 0;
        theModuleEfficiency_BPix[i++] = conf.getParameter<std::vector<double> >("theModuleEfficiency_BPix1");
        theModuleEfficiency_BPix[i++] = conf.getParameter<std::vector<double> >("theModuleEfficiency_BPix2");
        theModuleEfficiency_BPix[i++] = conf.getParameter<std::vector<double> >("theModuleEfficiency_BPix3");
        if (((theModuleEfficiency_BPix[0].size() != 4) || (theModuleEfficiency_BPix[1].size() != 4) ||
             (theModuleEfficiency_BPix[2].size() != 4)) &&
            (NumberOfBarrelLayers == 3))
          throw cms::Exception("Configuration") << "Wrong module number in efficiency config!";
        //
        thePUEfficiency.push_back(conf.getParameter<std::vector<double> >("thePUEfficiency_BPix1"));
        thePUEfficiency.push_back(conf.getParameter<std::vector<double> >("thePUEfficiency_BPix2"));
        thePUEfficiency.push_back(conf.getParameter<std::vector<double> >("thePUEfficiency_BPix3"));
        if (((thePUEfficiency[0].empty()) || (thePUEfficiency[1].empty()) || (thePUEfficiency[2].empty())) &&
            (NumberOfBarrelLayers == 3))
          throw cms::Exception("Configuration")
              << "At least one PU efficiency (BPix) number is needed in efficiency config!";
      }
      // The next is needed for Phase2 Tracker studies
      if (NumberOfBarrelLayers >= 5) {
        if (NumberOfTotLayers > 20) {
          throw cms::Exception("Configuration") << "SiPixelDigitizer was given more layers than it can handle";
        }
        // For Phase2 tracker layers just set the outermost BPix inefficiency to 99.9% THESE VALUES ARE HARDCODED ALSO ELSEWHERE IN THIS FILE
        for (int j = 5; j <= NumberOfBarrelLayers; j++) {
          thePixelColEfficiency[j - 1] = 0.999;
          thePixelEfficiency[j - 1] = 0.999;
          thePixelChipEfficiency[j - 1] = 0.999;
        }
      }
      //
      i = FPixIndex;
      thePixelColEfficiency[i++] = conf.getParameter<double>("thePixelColEfficiency_FPix1");
      thePixelColEfficiency[i++] = conf.getParameter<double>("thePixelColEfficiency_FPix2");
      if (NumberOfEndcapDisks >= 3) {
        thePixelColEfficiency[i++] = conf.getParameter<double>("thePixelColEfficiency_FPix3");
      }
      i = FPixIndex;
      thePixelEfficiency[i++] = conf.getParameter<double>("thePixelEfficiency_FPix1");
      thePixelEfficiency[i++] = conf.getParameter<double>("thePixelEfficiency_FPix2");
      if (NumberOfEndcapDisks >= 3) {
        thePixelEfficiency[i++] = conf.getParameter<double>("thePixelEfficiency_FPix3");
      }
      i = FPixIndex;
      thePixelChipEfficiency[i++] = conf.getParameter<double>("thePixelChipEfficiency_FPix1");
      thePixelChipEfficiency[i++] = conf.getParameter<double>("thePixelChipEfficiency_FPix2");
      if (NumberOfEndcapDisks >= 3) {
        thePixelChipEfficiency[i++] = conf.getParameter<double>("thePixelChipEfficiency_FPix3");
      }
      // The next is needed for Phase2 Tracker studies
      if (NumberOfEndcapDisks >= 4) {
        if (NumberOfTotLayers > 20) {
          throw cms::Exception("Configuration") << "SiPixelDigitizer was given more layers than it can handle";
        }
        // For Phase2 tracker layers just set the extra FPix disk inefficiency to 99.9% THESE VALUES ARE HARDCODED ALSO ELSEWHERE IN THIS FILE
        for (int j = 4 + FPixIndex; j <= NumberOfEndcapDisks + NumberOfBarrelLayers; j++) {
          thePixelColEfficiency[j - 1] = 0.999;
          thePixelEfficiency[j - 1] = 0.999;
          thePixelChipEfficiency[j - 1] = 0.999;
        }
      }
      //FPix Dynamic Inefficiency
      if (NumberOfBarrelLayers == 3) {
        i = FPixIndex;
        theInnerEfficiency_FPix[i++] = conf.getParameter<double>("theInnerEfficiency_FPix1");
        theInnerEfficiency_FPix[i++] = conf.getParameter<double>("theInnerEfficiency_FPix2");
        i = FPixIndex;
        theOuterEfficiency_FPix[i++] = conf.getParameter<double>("theOuterEfficiency_FPix1");
        theOuterEfficiency_FPix[i++] = conf.getParameter<double>("theOuterEfficiency_FPix2");
        thePUEfficiency.push_back(conf.getParameter<std::vector<double> >("thePUEfficiency_FPix_Inner"));
        thePUEfficiency.push_back(conf.getParameter<std::vector<double> >("thePUEfficiency_FPix_Outer"));
        if (((thePUEfficiency[3].empty()) || (thePUEfficiency[4].empty())) && (NumberOfEndcapDisks == 2))
          throw cms::Exception("Configuration")
              << "At least one (FPix) PU efficiency number is needed in efficiency config!";
        pu_scale.resize(thePUEfficiency.size());
      }
    } else
      LogInfo("PixelDigitizer ") << "The PixelDigitizer inefficiency configuration is read from the database.\n";
  }
  // the first "NumberOfBarrelLayers" settings [0],[1], ... , [NumberOfBarrelLayers-1] are for the barrel pixels
  // the next  "NumberOfEndcapDisks"  settings [NumberOfBarrelLayers],[NumberOfBarrelLayers+1], ... [NumberOfEndcapDisks+NumberOfBarrelLayers-1]
}
 
// Read DynIneff Scale factors from DB
void SiPixelDigitizerAlgorithm::init_DynIneffDB(const edm::EventSetup& es, const unsigned int& bunchspace) {
  if (AddPixelInefficiency && !pixelEfficiencies_.FromConfig) {
    if (bunchspace == 50)
      es.get<SiPixelDynamicInefficiencyRcd>().get("50ns", SiPixelDynamicInefficiency_);
    else
      es.get<SiPixelDynamicInefficiencyRcd>().get(SiPixelDynamicInefficiency_);
    pixelEfficiencies_.init_from_db(geom_, SiPixelDynamicInefficiency_);
  }
}
 
void SiPixelDigitizerAlgorithm::PixelEfficiencies::init_from_db(
    const edm::ESHandle<TrackerGeometry>& geom,
    const edm::ESHandle<SiPixelDynamicInefficiency>& SiPixelDynamicInefficiency) {
  theInstLumiScaleFactor = SiPixelDynamicInefficiency->gettheInstLumiScaleFactor();
  const std::map<uint32_t, double>& PixelGeomFactorsDBIn = SiPixelDynamicInefficiency->getPixelGeomFactors();
  const std::map<uint32_t, double>& ColGeomFactorsDB = SiPixelDynamicInefficiency->getColGeomFactors();
  const std::map<uint32_t, double>& ChipGeomFactorsDB = SiPixelDynamicInefficiency->getChipGeomFactors();
  const std::map<uint32_t, std::vector<double> >& PUFactors = SiPixelDynamicInefficiency->getPUFactors();
  std::vector<uint32_t> DetIdmasks = SiPixelDynamicInefficiency->getDetIdmasks();
 
  // Loop on all modules, initialize map for easy access
  for (const auto& it_module : geom->detUnits()) {
    if (dynamic_cast<PixelGeomDetUnit const*>(it_module) == nullptr)
      continue;
    const DetId detid = it_module->geographicalId();
    uint32_t rawid = detid.rawId();
    PixelGeomFactors[rawid] = 1;
    ColGeomFactors[rawid] = 1;
    ChipGeomFactors[rawid] = 1;
    PixelGeomFactorsROCStdPixels[rawid] = std::vector<double>(16, 1);
    PixelGeomFactorsROCBigPixels[rawid] = std::vector<double>(16, 1);
  }
 
  // ROC level inefficiency for phase 1 (disentangle scale factors for big and std size pixels)
  std::map<uint32_t, double> PixelGeomFactorsDB;
 
  if (geom->isThere(GeomDetEnumerators::P1PXB) || geom->isThere(GeomDetEnumerators::P1PXEC)) {
    for (auto db_factor : PixelGeomFactorsDBIn) {
      int shift = DetId(db_factor.first).subdetId() == static_cast<int>(PixelSubdetector::PixelBarrel) ? BPixRocIdShift
                                                                                                       : FPixRocIdShift;
      unsigned int rocMask = rocIdMaskBits << shift;
      unsigned int rocId = (((db_factor.first) & rocMask) >> shift);
      if (rocId != 0) {
        rocId--;
        unsigned int rawid = db_factor.first & (~rocMask);
        const PixelGeomDetUnit* theGeomDet = dynamic_cast<const PixelGeomDetUnit*>(geom->idToDet(rawid));
        PixelTopology const* topology = &(theGeomDet->specificTopology());
        const int nPixelsInROC = topology->rowsperroc() * topology->colsperroc();
        const int nBigPixelsInROC = 2 * topology->rowsperroc() + topology->colsperroc() - 2;
        double factor = db_factor.second;
        double badFraction = 1 - factor;
        double bigPixelFraction = static_cast<double>(nBigPixelsInROC) / nPixelsInROC;
        double stdPixelFraction = 1. - bigPixelFraction;
 
        double badFractionBig = std::min(bigPixelFraction, badFraction);
        double badFractionStd = std::max(0., badFraction - badFractionBig);
        double badFractionBigReNormalized = badFractionBig / bigPixelFraction;
        double badFractionStdReNormalized = badFractionStd / stdPixelFraction;
        PixelGeomFactorsROCStdPixels[rawid][rocId] *= (1. - badFractionStdReNormalized);
        PixelGeomFactorsROCBigPixels[rawid][rocId] *= (1. - badFractionBigReNormalized);
      } else {
        PixelGeomFactorsDB[db_factor.first] = db_factor.second;
      }
    }
  }  // is Phase 1 geometry
  else {
    PixelGeomFactorsDB = PixelGeomFactorsDBIn;
  }
 
  // Loop on all modules, store module level geometrical scale factors
  for (const auto& it_module : geom->detUnits()) {
    if (dynamic_cast<PixelGeomDetUnit const*>(it_module) == nullptr)
      continue;
    const DetId detid = it_module->geographicalId();
    uint32_t rawid = detid.rawId();
    for (auto db_factor : PixelGeomFactorsDB)
      if (matches(detid, DetId(db_factor.first), DetIdmasks))
        PixelGeomFactors[rawid] *= db_factor.second;
    for (auto db_factor : ColGeomFactorsDB)
      if (matches(detid, DetId(db_factor.first), DetIdmasks))
        ColGeomFactors[rawid] *= db_factor.second;
    for (auto db_factor : ChipGeomFactorsDB)
      if (matches(detid, DetId(db_factor.first), DetIdmasks))
        ChipGeomFactors[rawid] *= db_factor.second;
  }
 
  // piluep scale factors are calculated once per event
  // therefore vector index is stored in a map for each module that matches to a db_id
  size_t i = 0;
  for (auto factor : PUFactors) {
    const DetId db_id = DetId(factor.first);
    for (const auto& it_module : geom->detUnits()) {
      if (dynamic_cast<PixelGeomDetUnit const*>(it_module) == nullptr)
        continue;
      const DetId detid = it_module->geographicalId();
      if (!matches(detid, db_id, DetIdmasks))
        continue;
      if (iPU.count(detid.rawId())) {
        throw cms::Exception("Database")
            << "Multiple db_ids match to same module in SiPixelDynamicInefficiency DB Object";
      } else {
        iPU[detid.rawId()] = i;
      }
    }
    thePUEfficiency.push_back(factor.second);
    ++i;
  }
  pu_scale.resize(thePUEfficiency.size());
}
 
bool SiPixelDigitizerAlgorithm::PixelEfficiencies::matches(const DetId& detid,
                                                           const DetId& db_id,
                                                           const std::vector<uint32_t>& DetIdmasks) {
  if (detid.subdetId() != db_id.subdetId())
    return false;
  for (size_t i = 0; i < DetIdmasks.size(); ++i) {
    DetId maskid = DetId(DetIdmasks.at(i));
    if (maskid.subdetId() != db_id.subdetId())
      continue;
    if ((detid.rawId() & maskid.rawId()) != (db_id.rawId() & maskid.rawId()) &&
        (db_id.rawId() & maskid.rawId()) != DetId(db_id.det(), db_id.subdetId()).rawId())
      return false;
  }
  return true;
}
 
SiPixelDigitizerAlgorithm::PixelAging::PixelAging(const edm::ParameterSet& conf,
                                                  bool AddAging,
                                                  int NumberOfBarrelLayers,
                                                  int NumberOfEndcapDisks) {
  // pixel aging
  // Don't use Hard coded values, read aging in from python or don't use any
  if (AddAging) {
    int NumberOfTotLayers = NumberOfBarrelLayers + NumberOfEndcapDisks;
    FPixIndex = NumberOfBarrelLayers;
 
    int i = 0;
    thePixelPseudoRadDamage[i++] = conf.getParameter<double>("thePixelPseudoRadDamage_BPix1");
    thePixelPseudoRadDamage[i++] = conf.getParameter<double>("thePixelPseudoRadDamage_BPix2");
    thePixelPseudoRadDamage[i++] = conf.getParameter<double>("thePixelPseudoRadDamage_BPix3");
    thePixelPseudoRadDamage[i++] = conf.getParameter<double>("thePixelPseudoRadDamage_BPix4");
 
    // to be removed when Gaelle will have the phase2 digitizer
    if (NumberOfBarrelLayers >= 5) {
      if (NumberOfTotLayers > 20) {
        throw cms::Exception("Configuration") << "SiPixelDigitizer was given more layers than it can handle";
      }
      // For Phase2 tracker layers just set the outermost BPix aging 0.
      for (int j = 5; j <= NumberOfBarrelLayers; j++) {
        thePixelPseudoRadDamage[j - 1] = 0.;
      }
    }
    //
    i = FPixIndex;
    thePixelPseudoRadDamage[i++] = conf.getParameter<double>("thePixelPseudoRadDamage_FPix1");
    thePixelPseudoRadDamage[i++] = conf.getParameter<double>("thePixelPseudoRadDamage_FPix2");
    thePixelPseudoRadDamage[i++] = conf.getParameter<double>("thePixelPseudoRadDamage_FPix3");
 
    //To be removed when Phase2 digitizer will be available
    if (NumberOfEndcapDisks >= 4) {
      if (NumberOfTotLayers > 20) {
        throw cms::Exception("Configuration") << "SiPixelDigitizer was given more layers than it can handle";
      }
      // For Phase2 tracker layers just set the extra FPix disk aging to 0. BE CAREFUL THESE VALUES ARE HARDCODED ALSO ELSEWHERE IN THIS FILE
      for (int j = 4 + FPixIndex; j <= NumberOfEndcapDisks + NumberOfBarrelLayers; j++) {
        thePixelPseudoRadDamage[j - 1] = 0.;
      }
    }
  }
  // the first "NumberOfBarrelLayers" settings [0],[1], ... , [NumberOfBarrelLayers-1] are for the barrel pixels
  // the next  "NumberOfEndcapDisks"  settings [NumberOfBarrelLayers],[NumberOfBarrelLayers+1], ... [NumberOfEndcapDisks+NumberOfBarrelLayers-1]
}
 
//=========================================================================
void SiPixelDigitizerAlgorithm::accumulateSimHits(std::vector<PSimHit>::const_iterator inputBegin,
                                                  std::vector<PSimHit>::const_iterator inputEnd,
                                                  const size_t inputBeginGlobalIndex,
                                                  const unsigned int tofBin,
                                                  const PixelGeomDetUnit* pixdet,
                                                  const GlobalVector& bfield,
                                                  const TrackerTopology* tTopo,
                                                  CLHEP::HepRandomEngine* engine) {
  // produce SignalPoint's for all SimHit's in detector
  // Loop over hits
 
  uint32_t detId = pixdet->geographicalId().rawId();
  size_t simHitGlobalIndex = inputBeginGlobalIndex;  // This needs to stored to create the digi-sim link later
  for (std::vector<PSimHit>::const_iterator ssbegin = inputBegin; ssbegin != inputEnd; ++ssbegin, ++simHitGlobalIndex) {
    // skip hits not in this detector.
    if ((*ssbegin).detUnitId() != detId) {
      continue;
    }
 
#ifdef TP_DEBUG
    LogDebug("Pixel Digitizer") << (*ssbegin).particleType() << " " << (*ssbegin).pabs() << " "
                                << (*ssbegin).energyLoss() << " " << (*ssbegin).tof() << " " << (*ssbegin).trackId()
                                << " " << (*ssbegin).processType() << " " << (*ssbegin).detUnitId()
                                << (*ssbegin).entryPoint() << " " << (*ssbegin).exitPoint();
#endif
 
    std::vector<EnergyDepositUnit> ionization_points;
    std::vector<SignalPoint> collection_points;
 
    // fill collection_points for this SimHit, indpendent of topology
    // Check the TOF cut
    if (((*ssbegin).tof() - pixdet->surface().toGlobal((*ssbegin).localPosition()).mag() / 30.) >= theTofLowerCut &&
        ((*ssbegin).tof() - pixdet->surface().toGlobal((*ssbegin).localPosition()).mag() / 30.) <= theTofUpperCut) {
      primary_ionization(*ssbegin, ionization_points, engine);  // fills _ionization_points
      drift(*ssbegin,
            pixdet,
            bfield,
            tTopo,
            ionization_points,
            collection_points);  // transforms _ionization_points to collection_points
      // compute induced signal on readout elements and add to _signal
      induce_signal(inputBegin,
                    inputEnd,
                    *ssbegin,
                    simHitGlobalIndex,
                    tofBin,
                    pixdet,
                    collection_points);  // 1st 3 args needed only for SimHit<-->Digi link
    }                                    //  end if
  }                                      // end for
}
 
//============================================================================
void SiPixelDigitizerAlgorithm::calculateInstlumiFactor(PileupMixingContent* puInfo) {
  //Instlumi scalefactor calculating for dynamic inefficiency
 
  if (puInfo) {
    const std::vector<int>& bunchCrossing = puInfo->getMix_bunchCrossing();
    const std::vector<float>& TrueInteractionList = puInfo->getMix_TrueInteractions();
    //const int bunchSpacing = puInfo->getMix_bunchSpacing();
 
    int pui = 0, p = 0;
    std::vector<int>::const_iterator pu;
    std::vector<int>::const_iterator pu0 = bunchCrossing.end();
 
    for (pu = bunchCrossing.begin(); pu != bunchCrossing.end(); ++pu) {
      if (*pu == 0) {
        pu0 = pu;
        p = pui;
      }
      pui++;
    }
    if (pu0 != bunchCrossing.end()) {
      for (size_t i = 0, n = pixelEfficiencies_.thePUEfficiency.size(); i < n; i++) {
        double instlumi = TrueInteractionList.at(p) * pixelEfficiencies_.theInstLumiScaleFactor;
        double instlumi_pow = 1.;
        pixelEfficiencies_.pu_scale[i] = 0;
        for (size_t j = 0; j < pixelEfficiencies_.thePUEfficiency[i].size(); j++) {
          pixelEfficiencies_.pu_scale[i] += instlumi_pow * pixelEfficiencies_.thePUEfficiency[i][j];
          instlumi_pow *= instlumi;
        }
      }
    }
  } else {
    for (int i = 0, n = pixelEfficiencies_.thePUEfficiency.size(); i < n; i++) {
      pixelEfficiencies_.pu_scale[i] = 1.;
    }
  }
}
 
//============================================================================
void SiPixelDigitizerAlgorithm::calculateInstlumiFactor(const std::vector<PileupSummaryInfo>& ps, int bunchSpacing) {
  int p = -1;
  for (unsigned int i = 0; i < ps.size(); i++)
    if (ps[i].getBunchCrossing() == 0)
      p = i;
 
  if (p >= 0) {
    for (size_t i = 0, n = pixelEfficiencies_.thePUEfficiency.size(); i < n; i++) {
      double instlumi = ps[p].getTrueNumInteractions() * pixelEfficiencies_.theInstLumiScaleFactor;
      double instlumi_pow = 1.;
      pixelEfficiencies_.pu_scale[i] = 0;
      for (size_t j = 0; j < pixelEfficiencies_.thePUEfficiency[i].size(); j++) {
        pixelEfficiencies_.pu_scale[i] += instlumi_pow * pixelEfficiencies_.thePUEfficiency[i][j];
        instlumi_pow *= instlumi;
      }
    }
  } else {
    for (int i = 0, n = pixelEfficiencies_.thePUEfficiency.size(); i < n; i++) {
      pixelEfficiencies_.pu_scale[i] = 1.;
    }
  }
}
 
// ==========  StuckTBMs
 
bool SiPixelDigitizerAlgorithm::killBadFEDChannels() const { return KillBadFEDChannels; }
 
std::unique_ptr<PixelFEDChannelCollection> SiPixelDigitizerAlgorithm::chooseScenario(
    const std::vector<PileupSummaryInfo>& ps, CLHEP::HepRandomEngine* engine) {
  std::unique_ptr<PixelFEDChannelCollection> PixelFEDChannelCollection_ = nullptr;
  pixelEfficiencies_.PixelFEDChannelCollection_ = nullptr;
 
  std::vector<int> bunchCrossing;
  std::vector<float> TrueInteractionList;
 
  for (unsigned int i = 0; i < ps.size(); i++) {
    bunchCrossing.push_back(ps[i].getBunchCrossing());
    TrueInteractionList.push_back(ps[i].getTrueNumInteractions());
  }
 
  int pui = 0, p = 0;
  std::vector<int>::const_iterator pu;
  std::vector<int>::const_iterator pu0 = bunchCrossing.end();
 
  for (pu = bunchCrossing.begin(); pu != bunchCrossing.end(); ++pu) {
    if (*pu == 0) {
      pu0 = pu;
      p = pui;
    }
    pui++;
  }
 
  if (pu0 != bunchCrossing.end()) {
    unsigned int PUBin = TrueInteractionList.at(p);  // case delta PU=1, fix me
    const auto& theProbabilitiesPerScenario = scenarioProbabilityHandle->getProbabilities(PUBin);
    std::vector<double> probabilities;
    probabilities.reserve(theProbabilitiesPerScenario.size());
    for (auto it = theProbabilitiesPerScenario.begin(); it != theProbabilitiesPerScenario.end(); it++) {
      probabilities.push_back(it->second);
    }
 
    CLHEP::RandGeneral randGeneral(*engine, &(probabilities.front()), probabilities.size());
    double x = randGeneral.shoot();
    unsigned int index = x * probabilities.size() - 1;
    const std::string& scenario = theProbabilitiesPerScenario.at(index).first;
 
    PixelFEDChannelCollection_ = std::make_unique<PixelFEDChannelCollection>(quality_map->at(scenario));
    pixelEfficiencies_.PixelFEDChannelCollection_ =
        std::make_unique<PixelFEDChannelCollection>(quality_map->at(scenario));
  }
 
  return PixelFEDChannelCollection_;
}
 
std::unique_ptr<PixelFEDChannelCollection> SiPixelDigitizerAlgorithm::chooseScenario(PileupMixingContent* puInfo,
                                                                                     CLHEP::HepRandomEngine* engine) {
  //Determine scenario to use for the current event based on pileup information
 
  std::unique_ptr<PixelFEDChannelCollection> PixelFEDChannelCollection_ = nullptr;
  pixelEfficiencies_.PixelFEDChannelCollection_ = nullptr;
  if (puInfo) {
    const std::vector<int>& bunchCrossing = puInfo->getMix_bunchCrossing();
    const std::vector<float>& TrueInteractionList = puInfo->getMix_TrueInteractions();
 
    int pui = 0, p = 0;
    std::vector<int>::const_iterator pu;
    std::vector<int>::const_iterator pu0 = bunchCrossing.end();
 
    for (pu = bunchCrossing.begin(); pu != bunchCrossing.end(); ++pu) {
      if (*pu == 0) {
        pu0 = pu;
        p = pui;
      }
      pui++;
    }
 
    if (pu0 != bunchCrossing.end()) {
      unsigned int PUBin = TrueInteractionList.at(p);  // case delta PU=1, fix me
      const auto& theProbabilitiesPerScenario = scenarioProbabilityHandle->getProbabilities(PUBin);
      std::vector<double> probabilities;
      probabilities.reserve(theProbabilitiesPerScenario.size());
      for (auto it = theProbabilitiesPerScenario.begin(); it != theProbabilitiesPerScenario.end(); it++) {
        probabilities.push_back(it->second);
      }
 
      CLHEP::RandGeneral randGeneral(*engine, &(probabilities.front()), probabilities.size());
      double x = randGeneral.shoot();
      unsigned int index = x * probabilities.size() - 1;
      const std::string& scenario = theProbabilitiesPerScenario.at(index).first;
 
      PixelFEDChannelCollection_ = std::make_unique<PixelFEDChannelCollection>(quality_map->at(scenario));
      pixelEfficiencies_.PixelFEDChannelCollection_ =
          std::make_unique<PixelFEDChannelCollection>(quality_map->at(scenario));
    }
  }
  return PixelFEDChannelCollection_;
}
 
//============================================================================
void SiPixelDigitizerAlgorithm::setSimAccumulator(const std::map<uint32_t, std::map<int, int> >& signalMap) {
  for (const auto& det : signalMap) {
    auto& theSignal = _signal[det.first];
    for (const auto& chan : det.second) {
      theSignal[chan.first].set(chan.second *
                                theElectronPerADC);  // will get divided again by theElectronPerAdc in digitize...
    }
  }
}
 
//============================================================================
void SiPixelDigitizerAlgorithm::digitize(const PixelGeomDetUnit* pixdet,
                                         std::vector<PixelDigi>& digis,
                                         std::vector<PixelDigiSimLink>& simlinks,
                                         const TrackerTopology* tTopo,
                                         CLHEP::HepRandomEngine* engine) {
  // Pixel Efficiency moved from the constructor to this method because
  // the information of the det are not available in the constructor
  // Efficiency parameters. 0 - no inefficiency, 1-low lumi, 10-high lumi
 
  uint32_t detID = pixdet->geographicalId().rawId();
  const signal_map_type& theSignal = _signal[detID];
 
  // Noise already defined in electrons
  // thePixelThresholdInE = thePixelThreshold * theNoiseInElectrons ;
  // Find the threshold in noise units, needed for the noiser.
 
  float thePixelThresholdInE = 0.;
 
  if (theNoiseInElectrons > 0.) {
    if (pixdet->type().isTrackerPixel() && pixdet->type().isBarrel()) {  // Barrel modules
      int lay = tTopo->layer(detID);
      if (addThresholdSmearing) {
        if (pixdet->subDetector() == GeomDetEnumerators::SubDetector::PixelBarrel ||
            pixdet->subDetector() == GeomDetEnumerators::SubDetector::P1PXB) {
          if (lay == 1) {
            thePixelThresholdInE = CLHEP::RandGaussQ::shoot(
                engine, theThresholdInE_BPix_L1, theThresholdSmearing_BPix_L1);  // gaussian smearing
          } else if (lay == 2) {
            thePixelThresholdInE = CLHEP::RandGaussQ::shoot(
                engine, theThresholdInE_BPix_L2, theThresholdSmearing_BPix_L2);  // gaussian smearing
          } else {
            thePixelThresholdInE =
                CLHEP::RandGaussQ::shoot(engine, theThresholdInE_BPix, theThresholdSmearing_BPix);  // gaussian smearing
          }
        }
      } else {
        if (pixdet->subDetector() == GeomDetEnumerators::SubDetector::PixelBarrel ||
            pixdet->subDetector() == GeomDetEnumerators::SubDetector::P1PXB) {
          if (lay == 1) {
            thePixelThresholdInE = theThresholdInE_BPix_L1;
          } else if (lay == 2) {
            thePixelThresholdInE = theThresholdInE_BPix_L2;
          } else {
            thePixelThresholdInE = theThresholdInE_BPix;  // no smearing
          }
        }
      }
    } else if (pixdet->type().isTrackerPixel()) {  // Forward disks modules
      if (addThresholdSmearing) {
        thePixelThresholdInE =
            CLHEP::RandGaussQ::shoot(engine, theThresholdInE_FPix, theThresholdSmearing_FPix);  // gaussian smearing
      } else {
        thePixelThresholdInE = theThresholdInE_FPix;  // no smearing
      }
    } else {
      throw cms::Exception("NotAPixelGeomDetUnit") << "Not a pixel geomdet unit" << detID;
    }
  }
 
#ifdef TP_DEBUG
  const PixelTopology* topol = &pixdet->specificTopology();
  int numColumns = topol->ncolumns();  // det module number of cols&rows
  int numRows = topol->nrows();
  // full detector thickness
  float moduleThickness = pixdet->specificSurface().bounds().thickness();
  LogDebug("PixelDigitizer") << " PixelDigitizer " << numColumns << " " << numRows << " " << moduleThickness;
#endif
 
  if (addNoise)
    add_noise(pixdet, thePixelThresholdInE / theNoiseInElectrons, engine);  // generate noise
 
  // Do only if needed
 
  if ((AddPixelInefficiency) && (!theSignal.empty()))
    pixel_inefficiency(pixelEfficiencies_, pixdet, tTopo, engine);  // Kill some pixels
 
  if (use_ineff_from_db_ && (!theSignal.empty()))
    pixel_inefficiency_db(detID);
 
  if (use_module_killing_) {
    if (use_deadmodule_DB_) {  // remove dead modules using DB
      module_killing_DB(detID);
    } else {  // remove dead modules using the list in cfg file
      module_killing_conf(detID);
    }
  }
 
  make_digis(thePixelThresholdInE, detID, pixdet, digis, simlinks, tTopo);
 
#ifdef TP_DEBUG
  LogDebug("PixelDigitizer") << "[SiPixelDigitizerAlgorithm] converted " << digis.size() << " PixelDigis in DetUnit"
                             << detID;
#endif
}
 
//***********************************************************************/
// Generate primary ionization along the track segment.
// Divide the track into small sub-segments
void SiPixelDigitizerAlgorithm::primary_ionization(const PSimHit& hit,
                                                   std::vector<EnergyDepositUnit>& ionization_points,
                                                   CLHEP::HepRandomEngine* engine) const {
  // Straight line approximation for trajectory inside active media
 
  const float SegmentLength = 0.0010;  //10microns in cm
  float energy;
 
  // Get the 3D segment direction vector
  LocalVector direction = hit.exitPoint() - hit.entryPoint();
 
  float eLoss = hit.energyLoss();  // Eloss in GeV
  float length = direction.mag();  // Track length in Silicon
 
  int NumberOfSegments = int(length / SegmentLength);  // Number of segments
  if (NumberOfSegments < 1)
    NumberOfSegments = 1;
 
#ifdef TP_DEBUG
  LogDebug("Pixel Digitizer") << " enter primary_ionzation " << NumberOfSegments
                              << " shift = " << (hit.exitPoint().x() - hit.entryPoint().x()) << " "
                              << (hit.exitPoint().y() - hit.entryPoint().y()) << " "
                              << (hit.exitPoint().z() - hit.entryPoint().z()) << " " << hit.particleType() << " "
                              << hit.pabs();
#endif
 
  float* elossVector = new float[NumberOfSegments];  // Eloss vector
 
  if (fluctuateCharge) {
    //MP DA RIMUOVERE ASSOLUTAMENTE
    int pid = hit.particleType();
    //int pid=211;  // assume it is a pion
 
    float momentum = hit.pabs();
    // Generate fluctuated charge points
    fluctuateEloss(pid, momentum, eLoss, length, NumberOfSegments, elossVector, engine);
  }
 
  ionization_points.resize(NumberOfSegments);  // set size
 
  // loop over segments
  for (int i = 0; i != NumberOfSegments; i++) {
    // Divide the segment into equal length subsegments
    Local3DPoint point = hit.entryPoint() + float((i + 0.5) / NumberOfSegments) * direction;
 
    if (fluctuateCharge)
      energy = elossVector[i] / GeVperElectron;  // Convert charge to elec.
    else
      energy = hit.energyLoss() / GeVperElectron / float(NumberOfSegments);
 
    EnergyDepositUnit edu(energy, point);  //define position,energy point
    ionization_points[i] = edu;            // save
 
#ifdef TP_DEBUG
    LogDebug("Pixel Digitizer") << i << " " << ionization_points[i].x() << " " << ionization_points[i].y() << " "
                                << ionization_points[i].z() << " " << ionization_points[i].energy();
#endif
 
  }  // end for loop
 
  delete[] elossVector;
}
//******************************************************************************
 
// Fluctuate the charge comming from a small (10um) track segment.
// Use the G4 routine. For mip pions for the moment.
void SiPixelDigitizerAlgorithm::fluctuateEloss(int pid,
                                               float particleMomentum,
                                               float eloss,
                                               float length,
                                               int NumberOfSegs,
                                               float elossVector[],
                                               CLHEP::HepRandomEngine* engine) const {
  // Get dedx for this track
  //float dedx;
  //if( length > 0.) dedx = eloss/length;
  //else dedx = eloss;
 
  double particleMass = 139.6;  // Mass in MeV, Assume pion
  pid = std::abs(pid);
  if (pid != 211) {  // Mass in MeV
    if (pid == 11)
      particleMass = 0.511;
    else if (pid == 13)
      particleMass = 105.7;
    else if (pid == 321)
      particleMass = 493.7;
    else if (pid == 2212)
      particleMass = 938.3;
  }
  // What is the track segment length.
  float segmentLength = length / NumberOfSegs;
 
  // Generate charge fluctuations.
  float de = 0.;
  float sum = 0.;
  double segmentEloss = (1000. * eloss) / NumberOfSegs;  //eloss in MeV
  for (int i = 0; i < NumberOfSegs; i++) {
    //       material,*,   momentum,energy,*, *,  mass
    //myglandz_(14.,segmentLength,2.,2.,dedx,de,0.14);
    // The G4 routine needs momentum in MeV, mass in Mev, delta-cut in MeV,
    // track segment length in mm, segment eloss in MeV
    // Returns fluctuated eloss in MeV
    double deltaCutoff = tMax;  // the cutoff is sometimes redefined inside, so fix it.
    de = fluctuate->SampleFluctuations(double(particleMomentum * 1000.),
                                       particleMass,
                                       deltaCutoff,
                                       double(segmentLength * 10.),
                                       segmentEloss,
                                       engine) /
         1000.;  //convert to GeV
    elossVector[i] = de;
    sum += de;
  }
 
  if (sum > 0.) {  // If fluctuations give eloss>0.
    // Rescale to the same total eloss
    float ratio = eloss / sum;
 
    for (int ii = 0; ii < NumberOfSegs; ii++)
      elossVector[ii] = ratio * elossVector[ii];
  } else {  // If fluctuations gives 0 eloss
    float averageEloss = eloss / NumberOfSegs;
    for (int ii = 0; ii < NumberOfSegs; ii++)
      elossVector[ii] = averageEloss;
  }
  return;
}
 
//*******************************************************************************
// Drift the charge segments to the sensor surface (collection plane)
// Include the effect of E-field and B-field
void SiPixelDigitizerAlgorithm::drift(const PSimHit& hit,
                                      const PixelGeomDetUnit* pixdet,
                                      const GlobalVector& bfield,
                                      const TrackerTopology* tTopo,
                                      const std::vector<EnergyDepositUnit>& ionization_points,
                                      std::vector<SignalPoint>& collection_points) const {
#ifdef TP_DEBUG
  LogDebug("Pixel Digitizer") << " enter drift ";
#endif
 
  collection_points.resize(ionization_points.size());  // set size
 
  LocalVector driftDir = DriftDirection(pixdet, bfield, hit.detUnitId());  // get the charge drift direction
  if (driftDir.z() == 0.) {
    LogWarning("Magnetic field") << " pxlx: drift in z is zero ";
    return;
  }
 
  // tangent of Lorentz angle
  //float TanLorenzAngleX = driftDir.x()/driftDir.z();
  //float TanLorenzAngleY = 0.; // force to 0, driftDir.y()/driftDir.z();
 
  float TanLorenzAngleX, TanLorenzAngleY, dir_z, CosLorenzAngleX, CosLorenzAngleY;
  if (alpha2Order) {
    TanLorenzAngleX = driftDir.x();  // tangen of Lorentz angle
    TanLorenzAngleY = driftDir.y();
    dir_z = driftDir.z();                                                 // The z drift direction
    CosLorenzAngleX = 1. / sqrt(1. + TanLorenzAngleX * TanLorenzAngleX);  //cosine
    CosLorenzAngleY = 1. / sqrt(1. + TanLorenzAngleY * TanLorenzAngleY);  //cosine;
 
  } else {
    TanLorenzAngleX = driftDir.x();
    TanLorenzAngleY = 0.;                                                 // force to 0, driftDir.y()/driftDir.z();
    dir_z = driftDir.z();                                                 // The z drift direction
    CosLorenzAngleX = 1. / sqrt(1. + TanLorenzAngleX * TanLorenzAngleX);  //cosine to estimate the path length
    CosLorenzAngleY = 1.;
  }
 
  float moduleThickness = pixdet->specificSurface().bounds().thickness();
#ifdef TP_DEBUG
  LogDebug("Pixel Digitizer") << " Lorentz Tan " << TanLorenzAngleX << " " << TanLorenzAngleY << " " << CosLorenzAngleX
                              << " " << CosLorenzAngleY << " " << moduleThickness * TanLorenzAngleX << " " << driftDir;
#endif
 
  float Sigma_x = 1.;  // Charge spread
  float Sigma_y = 1.;
  float DriftDistance;  // Distance between charge generation and collection
  float DriftLength;    // Actual Drift Lentgh
  float Sigma;
 
  for (unsigned int i = 0; i != ionization_points.size(); i++) {
    float SegX, SegY, SegZ;  // position
    SegX = ionization_points[i].x();
    SegY = ionization_points[i].y();
    SegZ = ionization_points[i].z();
 
    // Distance from the collection plane
    //DriftDistance = (moduleThickness/2. + SegZ); // Drift to -z
    // Include explixitely the E drift direction (for CMS dir_z=-1)
    DriftDistance = moduleThickness / 2. - (dir_z * SegZ);  // Drift to -z
 
    //if( DriftDistance <= 0.)
    //cout<<" <=0 "<<DriftDistance<<" "<<i<<" "<<SegZ<<" "<<dir_z<<" "
    //  <<SegX<<" "<<SegY<<" "<<(moduleThickness/2)<<" "
    //  <<ionization_points[i].energy()<<" "
    //  <<hit.particleType()<<" "<<hit.pabs()<<" "<<hit.energyLoss()<<" "
    //  <<hit.entryPoint()<<" "<<hit.exitPoint()
    //  <<std::endl;
 
    if (DriftDistance < 0.) {
      DriftDistance = 0.;
    } else if (DriftDistance > moduleThickness)
      DriftDistance = moduleThickness;
 
    // Assume full depletion now, partial depletion will come later.
    float XDriftDueToMagField = DriftDistance * TanLorenzAngleX;
    float YDriftDueToMagField = DriftDistance * TanLorenzAngleY;
 
    // Shift cloud center
    float CloudCenterX = SegX + XDriftDueToMagField;
    float CloudCenterY = SegY + YDriftDueToMagField;
 
    // Calculate how long is the charge drift path
    DriftLength = sqrt(DriftDistance * DriftDistance + XDriftDueToMagField * XDriftDueToMagField +
                       YDriftDueToMagField * YDriftDueToMagField);
 
    // What is the charge diffusion after this path
    Sigma = sqrt(DriftLength / Dist300) * Sigma0;
 
    // Project the diffusion sigma on the collection plane
    Sigma_x = Sigma / CosLorenzAngleX;
    Sigma_y = Sigma / CosLorenzAngleY;
 
    // Insert a charge loss due to Rad Damage here
    float energyOnCollector = ionization_points[i].energy();  // The energy that reaches the collector
 
    // add pixel aging
    if (AddPixelAging) {
      float kValue = pixel_aging(pixelAging_, pixdet, tTopo);
      energyOnCollector *= exp(-1 * kValue * DriftDistance / moduleThickness);
    }
 
#ifdef TP_DEBUG
    LogDebug("Pixel Digitizer") << " Dift DistanceZ= " << DriftDistance << " module thickness= " << moduleThickness
                                << " Start Energy= " << ionization_points[i].energy()
                                << " Energy after loss= " << energyOnCollector;
#endif
    SignalPoint sp(CloudCenterX, CloudCenterY, Sigma_x, Sigma_y, hit.tof(), energyOnCollector);
 
    // Load the Charge distribution parameters
    collection_points[i] = (sp);
 
  }  // loop over ionization points, i.
 
}  // end drift
 
//*************************************************************************
// Induce the signal on the collection plane of the active sensor area.
void SiPixelDigitizerAlgorithm::induce_signal(std::vector<PSimHit>::const_iterator inputBegin,
                                              std::vector<PSimHit>::const_iterator inputEnd,
                                              const PSimHit& hit,
                                              const size_t hitIndex,
                                              const unsigned int tofBin,
                                              const PixelGeomDetUnit* pixdet,
                                              const std::vector<SignalPoint>& collection_points) {
  // X  - Rows, Left-Right, 160, (1.6cm)   for barrel
  // Y  - Columns, Down-Up, 416, (6.4cm)
 
  const PixelTopology* topol = &pixdet->specificTopology();
  uint32_t detID = pixdet->geographicalId().rawId();
  signal_map_type& theSignal = _signal[detID];
 
#ifdef TP_DEBUG
  LogDebug("Pixel Digitizer") << " enter induce_signal, " << topol->pitch().first << " " << topol->pitch().second;  //OK
#endif
 
  // local map to store pixels hit by 1 Hit.
  typedef std::map<int, float, std::less<int> > hit_map_type;
  hit_map_type hit_signal;
 
  // map to store pixel integrals in the x and in the y directions
  std::map<int, float, std::less<int> > x, y;
 
  // Assign signals to readout channels and store sorted by channel number
 
  // Iterate over collection points on the collection plane
  for (std::vector<SignalPoint>::const_iterator i = collection_points.begin(); i != collection_points.end(); ++i) {
    float CloudCenterX = i->position().x();  // Charge position in x
    float CloudCenterY = i->position().y();  //                 in y
    float SigmaX = i->sigma_x();             // Charge spread in x
    float SigmaY = i->sigma_y();             //               in y
    float Charge = i->amplitude();           // Charge amplitude
 
    //if(SigmaX==0 || SigmaY==0) {
    //cout<<SigmaX<<" "<<SigmaY
    //   << " cloud " << i->position().x() << " " << i->position().y() << " "
    //   << i->sigma_x() << " " << i->sigma_y() << " " << i->amplitude()<<std::endl;
    //}
 
#ifdef TP_DEBUG
    LogDebug("Pixel Digitizer") << " cloud " << i->position().x() << " " << i->position().y() << " " << i->sigma_x()
                                << " " << i->sigma_y() << " " << i->amplitude();
#endif
 
    // Find the maximum cloud spread in 2D plane , assume 3*sigma
    float CloudRight = CloudCenterX + ClusterWidth * SigmaX;
    float CloudLeft = CloudCenterX - ClusterWidth * SigmaX;
    float CloudUp = CloudCenterY + ClusterWidth * SigmaY;
    float CloudDown = CloudCenterY - ClusterWidth * SigmaY;
 
    // Define 2D cloud limit points
    LocalPoint PointRightUp = LocalPoint(CloudRight, CloudUp);
    LocalPoint PointLeftDown = LocalPoint(CloudLeft, CloudDown);
 
    // This points can be located outside the sensor area.
    // The conversion to measurement point does not check for that
    // so the returned pixel index might be wrong (outside range).
    // We rely on the limits check below to fix this.
    // But remember whatever we do here THE CHARGE OUTSIDE THE ACTIVE
    // PIXEL AREA IS LOST, it should not be collected.
 
    // Convert the 2D points to pixel indices
    MeasurementPoint mp = topol->measurementPosition(PointRightUp);  //OK
 
    int IPixRightUpX = int(floor(mp.x()));
    int IPixRightUpY = int(floor(mp.y()));
 
#ifdef TP_DEBUG
    LogDebug("Pixel Digitizer") << " right-up " << PointRightUp << " " << mp.x() << " " << mp.y() << " " << IPixRightUpX
                                << " " << IPixRightUpY;
#endif
 
    mp = topol->measurementPosition(PointLeftDown);  //OK
 
    int IPixLeftDownX = int(floor(mp.x()));
    int IPixLeftDownY = int(floor(mp.y()));
 
#ifdef TP_DEBUG
    LogDebug("Pixel Digitizer") << " left-down " << PointLeftDown << " " << mp.x() << " " << mp.y() << " "
                                << IPixLeftDownX << " " << IPixLeftDownY;
#endif
 
    // Check detector limits to correct for pixels outside range.
    int numColumns = topol->ncolumns();  // det module number of cols&rows
    int numRows = topol->nrows();
 
    IPixRightUpX = numRows > IPixRightUpX ? IPixRightUpX : numRows - 1;
    IPixRightUpY = numColumns > IPixRightUpY ? IPixRightUpY : numColumns - 1;
    IPixLeftDownX = 0 < IPixLeftDownX ? IPixLeftDownX : 0;
    IPixLeftDownY = 0 < IPixLeftDownY ? IPixLeftDownY : 0;
 
    x.clear();  // clear temporary integration array
    y.clear();
 
    // First integrate charge strips in x
    int ix;                                               // TT for compatibility
    for (ix = IPixLeftDownX; ix <= IPixRightUpX; ix++) {  // loop over x index
      float xUB, xLB, UpperBound, LowerBound;
 
      // Why is set to 0 if ix=0, does it meen that we accept charge
      // outside the sensor? CHeck How it was done in ORCA?
      //if(ix == 0) LowerBound = 0.;
      if (ix == 0 || SigmaX == 0.)  // skip for surface segemnts
        LowerBound = 0.;
      else {
        mp = MeasurementPoint(float(ix), 0.0);
        xLB = topol->localPosition(mp).x();
        LowerBound = 1 - calcQ((xLB - CloudCenterX) / SigmaX);
      }
 
      if (ix == numRows - 1 || SigmaX == 0.)
        UpperBound = 1.;
      else {
        mp = MeasurementPoint(float(ix + 1), 0.0);
        xUB = topol->localPosition(mp).x();
        UpperBound = 1. - calcQ((xUB - CloudCenterX) / SigmaX);
      }
 
      float TotalIntegrationRange = UpperBound - LowerBound;  // get strip
      x[ix] = TotalIntegrationRange;                          // save strip integral
      //if(SigmaX==0 || SigmaY==0)
      //cout<<TotalIntegrationRange<<" "<<ix<<std::endl;
    }
 
    // Now integrate strips in y
    int iy;                                               // TT for compatibility
    for (iy = IPixLeftDownY; iy <= IPixRightUpY; iy++) {  //loope over y ind
      float yUB, yLB, UpperBound, LowerBound;
 
      if (iy == 0 || SigmaY == 0.)
        LowerBound = 0.;
      else {
        mp = MeasurementPoint(0.0, float(iy));
        yLB = topol->localPosition(mp).y();
        LowerBound = 1. - calcQ((yLB - CloudCenterY) / SigmaY);
      }
 
      if (iy == numColumns - 1 || SigmaY == 0.)
        UpperBound = 1.;
      else {
        mp = MeasurementPoint(0.0, float(iy + 1));
        yUB = topol->localPosition(mp).y();
        UpperBound = 1. - calcQ((yUB - CloudCenterY) / SigmaY);
      }
 
      float TotalIntegrationRange = UpperBound - LowerBound;
      y[iy] = TotalIntegrationRange;  // save strip integral
      //if(SigmaX==0 || SigmaY==0)
      //cout<<TotalIntegrationRange<<" "<<iy<<std::endl;
    }
 
    // Get the 2D charge integrals by folding x and y strips
    int chan;
    for (ix = IPixLeftDownX; ix <= IPixRightUpX; ix++) {    // loop over x index
      for (iy = IPixLeftDownY; iy <= IPixRightUpY; iy++) {  //loope over y ind
 
        float ChargeFraction = Charge * x[ix] * y[iy];
 
        if (ChargeFraction > 0.) {
          chan = PixelDigi::pixelToChannel(ix, iy);  // Get index
          // Load the amplitude
          hit_signal[chan] += ChargeFraction;
        }  // endif
 
#ifdef TP_DEBUG
        mp = MeasurementPoint(float(ix), float(iy));
        LocalPoint lp = topol->localPosition(mp);
        chan = topol->channel(lp);
        LogDebug("Pixel Digitizer") << " pixel " << ix << " " << iy << " - "
                                    << " " << chan << " " << ChargeFraction << " " << mp.x() << " " << mp.y() << " "
                                    << lp.x() << " " << lp.y() << " "  // givex edge position
                                    << chan;                           // edge belongs to previous ?
#endif
 
      }  // endfor iy
    }    //endfor ix
 
  }  // loop over charge distributions
 
  // Fill the global map with all hit pixels from this event
 
  bool reweighted = false;
  if (UseReweighting) {
    if (hit.processType() == 0) {
      reweighted = hitSignalReweight(hit, hit_signal, hitIndex, tofBin, topol, detID, theSignal, hit.processType());
    } else {
      // If it's not the primary particle, use the first hit in the collection as SimHit, which should be the corresponding primary.
      reweighted =
          hitSignalReweight((*inputBegin), hit_signal, hitIndex, tofBin, topol, detID, theSignal, hit.processType());
    }
  }
  if (!reweighted) {
    for (hit_map_type::const_iterator im = hit_signal.begin(); im != hit_signal.end(); ++im) {
      int chan = (*im).first;
      theSignal[chan] += (makeDigiSimLinks_ ? Amplitude((*im).second, &hit, hitIndex, tofBin, (*im).second)
                                            : Amplitude((*im).second, (*im).second));
 
#ifdef TP_DEBUG
      std::pair<int, int> ip = PixelDigi::channelToPixel(chan);
      LogDebug("Pixel Digitizer") << " pixel " << ip.first << " " << ip.second << " " << theSignal[chan];
#endif
    }
  }
 
}  // end induce_signal
 
/***********************************************************************/
 
// Build pixels, check threshold, add misscalibration, ...
void SiPixelDigitizerAlgorithm::make_digis(float thePixelThresholdInE,
                                           uint32_t detID,
                                           const PixelGeomDetUnit* pixdet,
                                           std::vector<PixelDigi>& digis,
                                           std::vector<PixelDigiSimLink>& simlinks,
                                           const TrackerTopology* tTopo) const {
#ifdef TP_DEBUG
  LogDebug("Pixel Digitizer") << " make digis "
                              << " "
                              << " pixel threshold FPix" << theThresholdInE_FPix << " "
                              << " pixel threshold BPix" << theThresholdInE_BPix << " "
                              << " pixel threshold BPix Layer1" << theThresholdInE_BPix_L1 << " "
                              << " pixel threshold BPix Layer2" << theThresholdInE_BPix_L2 << " "
                              << " List pixels passing threshold ";
#endif
 
  // Loop over hit pixels
 
  signalMaps::const_iterator it = _signal.find(detID);
  if (it == _signal.end()) {
    return;
  }
 
  const signal_map_type& theSignal = (*it).second;
 
  // unsigned long is enough to store SimTrack id and EncodedEventId
  using TrackEventId = std::pair<decltype(SimTrack().trackId()), decltype(EncodedEventId().rawId())>;
  std::map<TrackEventId, float> simi;  // re-used
 
  for (signal_map_const_iterator i = theSignal.begin(); i != theSignal.end(); ++i) {
    float signalInElectrons = (*i).second;  // signal in electrons
 
    // Do the miss calibration for calibration studies only.
    //if(doMissCalibrate) signalInElectrons = missCalibrate(signalInElectrons)
 
    // Do only for pixels above threshold
 
    if (signalInElectrons >= thePixelThresholdInE &&
        signalInElectrons > 0.) {  // check threshold, always reject killed (0-charge) digis
 
      int chan = (*i).first;  // channel number
      std::pair<int, int> ip = PixelDigi::channelToPixel(chan);
      int adc = 0;  // ADC count as integer
 
      // Do the miss calibration for calibration studies only.
      if (doMissCalibrate) {
        int row = ip.first;                                                           // X in row
        int col = ip.second;                                                          // Y is in col
        adc = int(missCalibrate(detID, tTopo, pixdet, col, row, signalInElectrons));  //full misscalib.
      } else {                                             // Just do a simple electron->adc conversion
        adc = int(signalInElectrons / theElectronPerADC);  // calibrate gain
      }
      adc = std::min(adc, theAdcFullScale);  // Check maximum value
#ifdef TP_DEBUG
      LogDebug("Pixel Digitizer") << (*i).first << " " << (*i).second << " " << signalInElectrons << " " << adc
                                  << ip.first << " " << ip.second;
#endif
 
      // Load digis
      digis.emplace_back(ip.first, ip.second, adc);
 
      if (makeDigiSimLinks_ && !(*i).second.hitInfos().empty()) {
        //digilink
        unsigned int il = 0;
        for (const auto& info : (*i).second.hitInfos()) {
          // note: according to C++ standard operator[] does
          // value-initializiation, which for float means initial value of 0
          simi[std::make_pair(info.trackId(), info.eventId().rawId())] += (*i).second.individualampl()[il];
          il++;
        }
 
        //sum the contribution of the same trackid
        for (const auto& info : (*i).second.hitInfos()) {
          // skip if track already processed
          auto found = simi.find(std::make_pair(info.trackId(), info.eventId().rawId()));
          if (found == simi.end())
            continue;
 
          float sum_samechannel = found->second;
          float fraction = sum_samechannel / (*i).second;
          if (fraction > 1.f)
            fraction = 1.f;
 
          // Approximation: pick hitIndex and tofBin only from the first SimHit
          simlinks.emplace_back((*i).first, info.trackId(), info.hitIndex(), info.tofBin(), info.eventId(), fraction);
          simi.erase(found);
        }
        simi.clear();  // although should be empty already
      }
    }
  }
}
 
/***********************************************************************/
 
//  Add electronic noise to pixel charge
void SiPixelDigitizerAlgorithm::add_noise(const PixelGeomDetUnit* pixdet,
                                          float thePixelThreshold,
                                          CLHEP::HepRandomEngine* engine) {
#ifdef TP_DEBUG
  LogDebug("Pixel Digitizer") << " enter add_noise " << theNoiseInElectrons;
#endif
 
  uint32_t detID = pixdet->geographicalId().rawId();
  signal_map_type& theSignal = _signal[detID];
 
  // First add noise to hit pixels
  float theSmearedChargeRMS = 0.0;
 
  for (signal_map_iterator i = theSignal.begin(); i != theSignal.end(); i++) {
    if (addChargeVCALSmearing) {
      if ((*i).second < 3000) {
        theSmearedChargeRMS = 543.6 - (*i).second * 0.093;
      } else if ((*i).second < 6000) {
        theSmearedChargeRMS = 307.6 - (*i).second * 0.01;
      } else {
        theSmearedChargeRMS = -432.4 + (*i).second * 0.123;
      }
 
      // Noise from Vcal smearing:
      float noise_ChargeVCALSmearing = theSmearedChargeRMS * CLHEP::RandGaussQ::shoot(engine, 0., 1.);
      // Noise from full readout:
      float noise = CLHEP::RandGaussQ::shoot(engine, 0., theReadoutNoise);
 
      if (((*i).second + Amplitude(noise + noise_ChargeVCALSmearing, -1.)) < 0.) {
        (*i).second.set(0);
      } else {
        (*i).second += Amplitude(noise + noise_ChargeVCALSmearing, -1.);
      }
 
    }  // End if addChargeVCalSmearing
    else {
      // Noise: ONLY full READOUT Noise.
      // Use here the FULL readout noise, including TBM,ALT,AOH,OPT-REC.
      float noise = CLHEP::RandGaussQ::shoot(engine, 0., theReadoutNoise);
 
      if (((*i).second + Amplitude(noise, -1.)) < 0.) {
        (*i).second.set(0);
      } else {
        (*i).second += Amplitude(noise, -1.);
      }
    }  // end if only Noise from full readout
  }
 
  if (!addNoisyPixels)  // Option to skip noise in non-hit pixels
    return;
 
  const PixelTopology* topol = &pixdet->specificTopology();
  int numColumns = topol->ncolumns();  // det module number of cols&rows
  int numRows = topol->nrows();
 
  // Add noise on non-hit pixels
  // Use here the pixel noise
  int numberOfPixels = (numRows * numColumns);
  std::map<int, float, std::less<int> > otherPixels;
  std::map<int, float, std::less<int> >::iterator mapI;
 
  theNoiser->generate(numberOfPixels,
                      thePixelThreshold,    //thr. in un. of nois
                      theNoiseInElectrons,  // noise in elec.
                      otherPixels,
                      engine);
 
#ifdef TP_DEBUG
  LogDebug("Pixel Digitizer") << " Add noisy pixels " << numRows << " " << numColumns << " " << theNoiseInElectrons
                              << " " << theThresholdInE_FPix << theThresholdInE_BPix << " " << numberOfPixels << " "
                              << otherPixels.size();
#endif
 
  // Add noisy pixels
  for (mapI = otherPixels.begin(); mapI != otherPixels.end(); mapI++) {
    int iy = ((*mapI).first) / numRows;
    int ix = ((*mapI).first) - (iy * numRows);
 
    // Keep for a while for testing.
    if (iy < 0 || iy > (numColumns - 1))
      LogWarning("Pixel Geometry") << " error in iy " << iy;
    if (ix < 0 || ix > (numRows - 1))
      LogWarning("Pixel Geometry") << " error in ix " << ix;
 
    int chan = PixelDigi::pixelToChannel(ix, iy);
 
#ifdef TP_DEBUG
    LogDebug("Pixel Digitizer") << " Storing noise = " << (*mapI).first << " " << (*mapI).second << " " << ix << " "
                                << iy << " " << chan;
#endif
 
    if (theSignal[chan] == 0) {
      //      float noise = float( (*mapI).second );
      int noise = int((*mapI).second);
      theSignal[chan] = Amplitude(noise, -1.);
    }
  }
}
 
/***********************************************************************/
 
// Simulate the readout inefficiencies.
// Delete a selected number of single pixels, dcols and rocs.
void SiPixelDigitizerAlgorithm::pixel_inefficiency(const PixelEfficiencies& eff,
                                                   const PixelGeomDetUnit* pixdet,
                                                   const TrackerTopology* tTopo,
                                                   CLHEP::HepRandomEngine* engine) {
  uint32_t detID = pixdet->geographicalId().rawId();
  signal_map_type& theSignal = _signal[detID];
  const PixelTopology* topol = &pixdet->specificTopology();
  int numColumns = topol->ncolumns();  // det module number of cols&rows
  int numRows = topol->nrows();
  bool isPhase1 = pixdet->subDetector() == GeomDetEnumerators::SubDetector::P1PXB ||
                  pixdet->subDetector() == GeomDetEnumerators::SubDetector::P1PXEC;
  // Predefined efficiencies
  double pixelEfficiency = 1.0;
  double columnEfficiency = 1.0;
  double chipEfficiency = 1.0;
  std::vector<double> pixelEfficiencyROCStdPixels(16, 1);
  std::vector<double> pixelEfficiencyROCBigPixels(16, 1);
 
  auto pIndexConverter = PixelIndices(numColumns, numRows);
 
  std::vector<int> badRocsFromFEDChannels(16, 0);
  if (eff.PixelFEDChannelCollection_ != nullptr) {
    PixelFEDChannelCollection::const_iterator it = eff.PixelFEDChannelCollection_->find(detID);
 
    if (it != eff.PixelFEDChannelCollection_->end()) {
      const std::vector<CablingPathToDetUnit>& path = map_->pathToDetUnit(detID);
      for (const auto& ch : *it) {
        for (unsigned int i_roc = ch.roc_first; i_roc <= ch.roc_last; ++i_roc) {
          for (const auto p : path) {
            const PixelROC* myroc = map_.product()->findItem(p);
            if (myroc->idInDetUnit() == static_cast<unsigned int>(i_roc)) {
              LocalPixel::RocRowCol local = {39, 25};  //corresponding to center of ROC row,col
              GlobalPixel global = myroc->toGlobal(LocalPixel(local));
              int chipIndex(0), colROC(0), rowROC(0);
              pIndexConverter.transformToROC(global.col, global.row, chipIndex, colROC, rowROC);
              badRocsFromFEDChannels.at(chipIndex) = 1;
            }
          }
        }
      }  // loop over channels
    }    // detID in PixelFEDChannelCollection_
  }      // has PixelFEDChannelCollection_
 
  if (eff.FromConfig) {
    // setup the chip indices conversion
    if (pixdet->subDetector() == GeomDetEnumerators::SubDetector::PixelBarrel ||
        pixdet->subDetector() == GeomDetEnumerators::SubDetector::P1PXB) {  // barrel layers
      int layerIndex = tTopo->layer(detID);
      pixelEfficiency = eff.thePixelEfficiency[layerIndex - 1];
      columnEfficiency = eff.thePixelColEfficiency[layerIndex - 1];
      chipEfficiency = eff.thePixelChipEfficiency[layerIndex - 1];
      //std::cout <<"Using BPix columnEfficiency = "<<columnEfficiency<< " for layer = "<<layerIndex <<"\n";
      // This should never happen, but only check if it is not an upgrade geometry
      if (NumberOfBarrelLayers == 3) {
        if (numColumns > 416)
          LogWarning("Pixel Geometry") << " wrong columns in barrel " << numColumns;
        if (numRows > 160)
          LogWarning("Pixel Geometry") << " wrong rows in barrel " << numRows;
 
        int ladder = tTopo->pxbLadder(detID);
        int module = tTopo->pxbModule(detID);
        if (module <= 4)
          module = 5 - module;
        else
          module -= 4;
 
        columnEfficiency *= eff.theLadderEfficiency_BPix[layerIndex - 1][ladder - 1] *
                            eff.theModuleEfficiency_BPix[layerIndex - 1][module - 1] * eff.pu_scale[layerIndex - 1];
      }
    } else if (pixdet->subDetector() == GeomDetEnumerators::SubDetector::PixelEndcap ||
               pixdet->subDetector() == GeomDetEnumerators::SubDetector::P1PXEC ||
               pixdet->subDetector() == GeomDetEnumerators::SubDetector::P2PXEC) {  // forward disks
 
      unsigned int diskIndex =
          tTopo->layer(detID) + eff.FPixIndex;  // Use diskIndex-1 later to stay consistent with BPix
      unsigned int panelIndex = tTopo->pxfPanel(detID);
      unsigned int moduleIndex = tTopo->pxfModule(detID);
      //if (eff.FPixIndex>diskIndex-1){throw cms::Exception("Configuration") <<"SiPixelDigitizer is using the wrong efficiency value. index = "
      //                                                                       <<diskIndex-1<<" , MinIndex = "<<eff.FPixIndex<<" ... "<<tTopo->pxfDisk(detID);}
      pixelEfficiency = eff.thePixelEfficiency[diskIndex - 1];
      columnEfficiency = eff.thePixelColEfficiency[diskIndex - 1];
      chipEfficiency = eff.thePixelChipEfficiency[diskIndex - 1];
      //std::cout <<"Using FPix columnEfficiency = "<<columnEfficiency<<" for Disk = "<< tTopo->pxfDisk(detID)<<"\n";
      // Sometimes the forward pixels have wrong size,
      // this crashes the index conversion, so exit, but only check if it is not an upgrade geometry
      if (NumberOfBarrelLayers ==
          3) {  // whether it is the present or the phase 1 detector can be checked using GeomDetEnumerators::SubDetector
        if (numColumns > 260 || numRows > 160) {
          if (numColumns > 260)
            LogWarning("Pixel Geometry") << " wrong columns in endcaps " << numColumns;
          if (numRows > 160)
            LogWarning("Pixel Geometry") << " wrong rows in endcaps " << numRows;
          return;
        }
        if ((panelIndex == 1 && (moduleIndex == 1 || moduleIndex == 2)) ||
            (panelIndex == 2 && moduleIndex == 1)) {  //inner modules
          columnEfficiency *= eff.theInnerEfficiency_FPix[diskIndex - 1] * eff.pu_scale[3];
        } else {  //outer modules
          columnEfficiency *= eff.theOuterEfficiency_FPix[diskIndex - 1] * eff.pu_scale[4];
        }
      }  // current detector, forward
    } else if (pixdet->subDetector() == GeomDetEnumerators::SubDetector::P2OTB ||
               pixdet->subDetector() == GeomDetEnumerators::SubDetector::P2OTEC) {
      // If phase 2 outer tracker, hardcoded values as they have been so far
      pixelEfficiency = 0.999;
      columnEfficiency = 0.999;
      chipEfficiency = 0.999;
    }       // if barrel/forward
  } else {  // Load precomputed factors from Database
    pixelEfficiency = eff.PixelGeomFactors.at(detID);
    columnEfficiency = eff.ColGeomFactors.at(detID) * eff.pu_scale[eff.iPU.at(detID)];
    chipEfficiency = eff.ChipGeomFactors.at(detID);
    if (isPhase1) {
      for (unsigned int i_roc = 0; i_roc < eff.PixelGeomFactorsROCStdPixels.at(detID).size(); ++i_roc) {
        pixelEfficiencyROCStdPixels[i_roc] = eff.PixelGeomFactorsROCStdPixels.at(detID).at(i_roc);
        pixelEfficiencyROCBigPixels[i_roc] = eff.PixelGeomFactorsROCBigPixels.at(detID).at(i_roc);
      }
    }  // is Phase 1
  }
 
#ifdef TP_DEBUG
  LogDebug("Pixel Digitizer") << " enter pixel_inefficiency " << pixelEfficiency << " " << columnEfficiency << " "
                              << chipEfficiency;
#endif
 
  // Initilize the index converter
  //PixelIndices indexConverter(numColumns,numRows);
 
  int chipIndex = 0;
  int rowROC = 0;
  int colROC = 0;
  std::map<int, int, std::less<int> > chips, columns, pixelStd, pixelBig;
  std::map<int, int, std::less<int> >::iterator iter;
 
  // Find out the number of columns and rocs hits
  // Loop over hit pixels, amplitude in electrons, channel = coded row,col
  for (signal_map_const_iterator i = theSignal.begin(); i != theSignal.end(); ++i) {
    int chan = i->first;
    std::pair<int, int> ip = PixelDigi::channelToPixel(chan);
    int row = ip.first;   // X in row
    int col = ip.second;  // Y is in col
    //transform to ROC index coordinates
    pIndexConverter.transformToROC(col, row, chipIndex, colROC, rowROC);
    int dColInChip = pIndexConverter.DColumn(colROC);  // get ROC dcol from ROC col
    //dcol in mod
    int dColInDet = pIndexConverter.DColumnInModule(dColInChip, chipIndex);
 
    chips[chipIndex]++;
    columns[dColInDet]++;
    if (isPhase1) {
      if (topol->isItBigPixelInX(row) || topol->isItBigPixelInY(col))
        pixelBig[chipIndex]++;
      else
        pixelStd[chipIndex]++;
    }
  }
 
  // Delete some ROC hits.
  for (iter = chips.begin(); iter != chips.end(); iter++) {
    //float rand  = RandFlat::shoot();
    float rand = CLHEP::RandFlat::shoot(engine);
    if (rand > chipEfficiency)
      chips[iter->first] = 0;
  }
 
  // Delete some Dcol hits.
  for (iter = columns.begin(); iter != columns.end(); iter++) {
    //float rand  = RandFlat::shoot();
    float rand = CLHEP::RandFlat::shoot(engine);
    if (rand > columnEfficiency)
      columns[iter->first] = 0;
  }
 
  // Delete some pixel hits based on DCDC issue damage.
  if (isPhase1) {
    for (iter = pixelStd.begin(); iter != pixelStd.end(); iter++) {
      float rand = CLHEP::RandFlat::shoot(engine);
      if (rand > pixelEfficiencyROCStdPixels[iter->first])
        pixelStd[iter->first] = 0;
    }
 
    for (iter = pixelBig.begin(); iter != pixelBig.end(); iter++) {
      float rand = CLHEP::RandFlat::shoot(engine);
      if (rand > pixelEfficiencyROCBigPixels[iter->first])
        pixelBig[iter->first] = 0;
    }
  }
 
  // Now loop again over pixels to kill some of them.
  // Loop over hit pixels, amplitude in electrons, channel = coded row,col
  for (signal_map_iterator i = theSignal.begin(); i != theSignal.end(); ++i) {
    //    int chan = i->first;
    std::pair<int, int> ip = PixelDigi::channelToPixel(i->first);  //get pixel pos
    int row = ip.first;                                            // X in row
    int col = ip.second;                                           // Y is in col
    //transform to ROC index coordinates
    pIndexConverter.transformToROC(col, row, chipIndex, colROC, rowROC);
    int dColInChip = pIndexConverter.DColumn(colROC);  //get ROC dcol from ROC col
    //dcol in mod
    int dColInDet = pIndexConverter.DColumnInModule(dColInChip, chipIndex);
 
    //float rand  = RandFlat::shoot();
    float rand = CLHEP::RandFlat::shoot(engine);
    if (chips[chipIndex] == 0 || columns[dColInDet] == 0 || rand > pixelEfficiency ||
        (pixelStd.count(chipIndex) && pixelStd[chipIndex] == 0) ||
        (pixelBig.count(chipIndex) && pixelBig[chipIndex] == 0)) {
      // make pixel amplitude =0, pixel will be lost at clusterization
      i->second.set(0.);  // reset amplitude,
    }                     // end if
    if (isPhase1) {
      if ((pixelStd.count(chipIndex) && pixelStd[chipIndex] == 0) ||
          (pixelBig.count(chipIndex) && pixelBig[chipIndex] == 0) || (badRocsFromFEDChannels.at(chipIndex) == 1)) {
        //============================================================
        // make pixel amplitude =0, pixel will be lost at clusterization
        i->second.set(0.);  // reset amplitude,
      }                     // end if
    }                       // is Phase 1
    if (KillBadFEDChannels && badRocsFromFEDChannels.at(chipIndex) == 1) {
      i->second.set(0.);
    }
  }  // end pixel loop
}  // end pixel_indefficiency
 
//***************************************************************************************
// Simulate pixel aging with an exponential function
//**************************************************************************************
 
float SiPixelDigitizerAlgorithm::pixel_aging(const PixelAging& aging,
                                             const PixelGeomDetUnit* pixdet,
                                             const TrackerTopology* tTopo) const {
  uint32_t detID = pixdet->geographicalId().rawId();
 
  // Predefined damage parameter (no aging)
  float pseudoRadDamage = 0.0f;
 
  // setup the chip indices conversion
  if (pixdet->subDetector() == GeomDetEnumerators::SubDetector::PixelBarrel ||
      pixdet->subDetector() == GeomDetEnumerators::SubDetector::P1PXB) {  // barrel layers
    int layerIndex = tTopo->layer(detID);
 
    pseudoRadDamage = aging.thePixelPseudoRadDamage[layerIndex - 1];
 
    //  std::cout << "pixel_aging: " << std::endl;
    // std::cout << "Subid " << Subid << " layerIndex " << layerIndex << " ladder " << tTopo->pxbLadder(detID)  << " module  " << tTopo->pxbModule(detID) << std::endl;
 
  } else if (pixdet->subDetector() == GeomDetEnumerators::SubDetector::PixelEndcap ||
             pixdet->subDetector() == GeomDetEnumerators::SubDetector::P1PXEC ||
             pixdet->subDetector() == GeomDetEnumerators::SubDetector::P2PXEC) {  // forward disks
    unsigned int diskIndex =
        tTopo->layer(detID) + aging.FPixIndex;  // Use diskIndex-1 later to stay consistent with BPix
 
    pseudoRadDamage = aging.thePixelPseudoRadDamage[diskIndex - 1];
 
    //    std::cout << "pixel_aging: " << std::endl;
    //    std::cout << "Subid " << Subid << " diskIndex " << diskIndex << std::endl;
  } else if (pixdet->subDetector() == GeomDetEnumerators::SubDetector::P2OTB ||
             pixdet->subDetector() == GeomDetEnumerators::SubDetector::P2OTEC) {
    // if phase 2 OT hardcoded value as it has always been
    pseudoRadDamage = 0.f;
  }  // if barrel/forward
 
  //  std::cout << " pseudoRadDamage " << pseudoRadDamage << std::endl;
  //  std::cout << " end pixel_aging " << std::endl;
 
  return pseudoRadDamage;
#ifdef TP_DEBUG
  LogDebug("Pixel Digitizer") << " enter pixel_aging " << pseudoRadDamage;
#endif
}
 
//***********************************************************************
 
// Fluctuate the gain and offset for the amplitude calibration
// Use gaussian smearing.
//float SiPixelDigitizerAlgorithm::missCalibrate(const float amp) const {
//float gain  = RandGaussQ::shoot(1.,theGainSmearing);
//float offset  = RandGaussQ::shoot(0.,theOffsetSmearing);
//float newAmp = amp * gain + offset;
// More complex misscalibration
float SiPixelDigitizerAlgorithm::missCalibrate(uint32_t detID,
                                               const TrackerTopology* tTopo,
                                               const PixelGeomDetUnit* pixdet,
                                               int col,
                                               int row,
                                               const float signalInElectrons) const {
  // Central values
  //const float p0=0.00352, p1=0.868, p2=112., p3=113.; // pix(0,0,0)
  //  const float p0=0.00382, p1=0.886, p2=112.7, p3=113.0; // average roc=0
  //const float p0=0.00492, p1=1.998, p2=90.6, p3=134.1; // average roc=6
  // Smeared (rms)
  //const float s0=0.00020, s1=0.051, s2=5.4, s3=4.4; // average roc=0
  //const float s0=0.00015, s1=0.043, s2=3.2, s3=3.1; // col average roc=0
 
  // Make 2 sets of parameters for Fpix and BPIx:
 
  float p0 = 0.0f;
  float p1 = 0.0f;
  float p2 = 0.0f;
  float p3 = 0.0f;
 
  if (pixdet->type().isTrackerPixel() && pixdet->type().isBarrel()) {  // barrel layers
    p0 = BPix_p0;
    p1 = BPix_p1;
    p2 = BPix_p2;
    p3 = BPix_p3;
  } else if (pixdet->type().isTrackerPixel()) {  // forward disks
    p0 = FPix_p0;
    p1 = FPix_p1;
    p2 = FPix_p2;
    p3 = FPix_p3;
  } else {
    throw cms::Exception("NotAPixelGeomDetUnit") << "Not a pixel geomdet unit" << detID;
  }
 
  float newAmp = 0.f;  //Modified signal
 
  // Convert electrons to VCAL units
  float signal = (signalInElectrons - electronsPerVCAL_Offset) / electronsPerVCAL;
 
  // New gains/offsets are needed for phase1 L1
  int layer = 0;
  if (DetId(detID).subdetId() == 1)
    layer = tTopo->pxbLayer(detID);
  if (layer == 1)
    signal = (signalInElectrons - electronsPerVCAL_L1_Offset) / electronsPerVCAL_L1;
 
  // Simulate the analog response with fixed parametrization
  newAmp = p3 + p2 * tanh(p0 * signal - p1);
 
  // Use the pixel-by-pixel calibrations
  //transform to ROC index coordinates
  //int chipIndex=0, colROC=0, rowROC=0;
  //std::unique_ptr<PixelIndices> pIndexConverter(new PixelIndices(numColumns,numRows));
  //pIndexConverter->transformToROC(col,row,chipIndex,colROC,rowROC);
 
  // Use calibration from a file
  //int chanROC = PixelIndices::pixelToChannelROC(rowROC,colROC); // use ROC coordinates
  //float pp0=0, pp1=0,pp2=0,pp3=0;
  //map<int,CalParameters,std::less<int> >::const_iterator it=calmap.find(chanROC);
  //CalParameters y  = (*it).second;
  //pp0 = y.p0;
  //pp1 = y.p1;
  //pp2 = y.p2;
  //pp3 = y.p3;
 
  //
  // Use random smearing
  // Randomize the pixel response
  //float pp0  = RandGaussQ::shoot(p0,s0);
  //float pp1  = RandGaussQ::shoot(p1,s1);
  //float pp2  = RandGaussQ::shoot(p2,s2);
  //float pp3  = RandGaussQ::shoot(p3,s3);
 
  //newAmp = pp3 + pp2 * tanh(pp0*signal - pp1); // Final signal
 
  //cout<<" misscalibrate "<<col<<" "<<row<<" "<<chipIndex<<" "<<colROC<<" "
  //  <<rowROC<<" "<<signalInElectrons<<" "<<signal<<" "<<newAmp<<" "
  //  <<(signalInElectrons/theElectronPerADC)<<std::endl;
 
  return newAmp;
}
//******************************************************************************
 
// Set the drift direction accoring to the Bfield in local det-unit frame
// Works for both barrel and forward pixels.
// Replace the sign convention to fit M.Swartz's formulaes.
// Configurations for barrel and foward pixels possess different tanLorentzAngleperTesla
// parameter value
 
LocalVector SiPixelDigitizerAlgorithm::DriftDirection(const PixelGeomDetUnit* pixdet,
                                                      const GlobalVector& bfield,
                                                      const DetId& detId) const {
  Frame detFrame(pixdet->surface().position(), pixdet->surface().rotation());
  LocalVector Bfield = detFrame.toLocal(bfield);
 
  float alpha2_FPix;
  float alpha2_BPix;
  float alpha2;
 
  //float dir_x = -tanLorentzAnglePerTesla * Bfield.y();
  //float dir_y = +tanLorentzAnglePerTesla * Bfield.x();
  //float dir_z = -1.; // E field always in z direction, so electrons go to -z
  // The dir_z has to be +/- 1. !
  // LocalVector theDriftDirection = LocalVector(dir_x,dir_y,dir_z);
 
  float dir_x = 0.0f;
  float dir_y = 0.0f;
  float dir_z = 0.0f;
  float scale = 0.0f;
 
  uint32_t detID = pixdet->geographicalId().rawId();
 
  // Read Lorentz angle from cfg file:**************************************************************
 
  if (!use_LorentzAngle_DB_) {
    if (alpha2Order) {
      alpha2_FPix = tanLorentzAnglePerTesla_FPix * tanLorentzAnglePerTesla_FPix;
      alpha2_BPix = tanLorentzAnglePerTesla_BPix * tanLorentzAnglePerTesla_BPix;
    } else {
      alpha2_FPix = 0.0f;
      alpha2_BPix = 0.0f;
    }
 
    if (pixdet->type().isTrackerPixel() && pixdet->type().isBarrel()) {  // barrel layers
      dir_x = -(tanLorentzAnglePerTesla_BPix * Bfield.y() + alpha2_BPix * Bfield.z() * Bfield.x());
      dir_y = +(tanLorentzAnglePerTesla_BPix * Bfield.x() - alpha2_BPix * Bfield.z() * Bfield.y());
      dir_z = -(1 + alpha2_BPix * Bfield.z() * Bfield.z());
      scale = -dir_z;
    } else if (pixdet->type().isTrackerPixel()) {  // forward disks
      dir_x = -(tanLorentzAnglePerTesla_FPix * Bfield.y() + alpha2_FPix * Bfield.z() * Bfield.x());
      dir_y = +(tanLorentzAnglePerTesla_FPix * Bfield.x() - alpha2_FPix * Bfield.z() * Bfield.y());
      dir_z = -(1 + alpha2_FPix * Bfield.z() * Bfield.z());
      scale = -dir_z;
    } else {
      throw cms::Exception("NotAPixelGeomDetUnit") << "Not a pixel geomdet unit" << detID;
    }
  }  // end: Read LA from cfg file.
 
  //Read Lorentz angle from DB:********************************************************************
  if (use_LorentzAngle_DB_) {
    float lorentzAngle = SiPixelLorentzAngle_->getLorentzAngle(detId);
    alpha2 = lorentzAngle * lorentzAngle;
    //std::cout << "detID is: "<< it->first <<"The LA per tesla is: "<< it->second << std::std::endl;
    dir_x = -(lorentzAngle * Bfield.y() + alpha2 * Bfield.z() * Bfield.x());
    dir_y = +(lorentzAngle * Bfield.x() - alpha2 * Bfield.z() * Bfield.y());
    dir_z = -(1 + alpha2 * Bfield.z() * Bfield.z());
    scale = -dir_z;
  }  // end: Read LA from DataBase.
 
  LocalVector theDriftDirection = LocalVector(dir_x / scale, dir_y / scale, dir_z / scale);
 
#ifdef TP_DEBUG
  LogDebug("Pixel Digitizer") << " The drift direction in local coordinate is " << theDriftDirection;
#endif
 
  return theDriftDirection;
}
 
//****************************************************************************************************
 
void SiPixelDigitizerAlgorithm::pixel_inefficiency_db(uint32_t detID) {
  signal_map_type& theSignal = _signal[detID];
 
  // Loop over hit pixels, amplitude in electrons, channel = coded row,col
  for (signal_map_iterator i = theSignal.begin(); i != theSignal.end(); ++i) {
    //    int chan = i->first;
    std::pair<int, int> ip = PixelDigi::channelToPixel(i->first);  //get pixel pos
    int row = ip.first;                                            // X in row
    int col = ip.second;                                           // Y is in col
    //transform to ROC index coordinates
    if (theSiPixelGainCalibrationService_->isDead(detID, col, row)) {
      //      std::cout << "now in isdead check, row " << detID << " " << col << "," << row << std::std::endl;
      // make pixel amplitude =0, pixel will be lost at clusterization
      i->second.set(0.);  // reset amplitude,
    }                     // end if
  }                       // end pixel loop
}  // end pixel_indefficiency
 
//****************************************************************************************************
 
void SiPixelDigitizerAlgorithm::module_killing_conf(uint32_t detID) {
  bool isbad = false;
 
  Parameters::const_iterator itDeadModules = DeadModules.begin();
 
  int detid = detID;
  for (; itDeadModules != DeadModules.end(); ++itDeadModules) {
    int Dead_detID = itDeadModules->getParameter<int>("Dead_detID");
    if (detid == Dead_detID) {
      isbad = true;
      break;
    }
  }
 
  if (!isbad)
    return;
 
  signal_map_type& theSignal = _signal[detID];
 
  std::string Module = itDeadModules->getParameter<std::string>("Module");
 
  if (Module == "whole") {
    for (signal_map_iterator i = theSignal.begin(); i != theSignal.end(); ++i) {
      i->second.set(0.);  // reset amplitude
    }
  }
 
  for (signal_map_iterator i = theSignal.begin(); i != theSignal.end(); ++i) {
    std::pair<int, int> ip = PixelDigi::channelToPixel(i->first);  //get pixel pos
 
    if (Module == "tbmA" && ip.first >= 80 && ip.first <= 159) {
      i->second.set(0.);
    }
 
    if (Module == "tbmB" && ip.first <= 79) {
      i->second.set(0.);
    }
  }
}
//****************************************************************************************************
void SiPixelDigitizerAlgorithm::module_killing_DB(uint32_t detID) {
  // Not SLHC safe for now
 
  bool isbad = false;
 
  std::vector<SiPixelQuality::disabledModuleType> disabledModules = SiPixelBadModule_->getBadComponentList();
 
  SiPixelQuality::disabledModuleType badmodule;
 
  for (size_t id = 0; id < disabledModules.size(); id++) {
    if (detID == disabledModules[id].DetID) {
      isbad = true;
      badmodule = disabledModules[id];
      break;
    }
  }
 
  if (!isbad)
    return;
 
  signal_map_type& theSignal = _signal[detID];
 
  //std::cout<<"Hit in: "<< detID <<" errorType "<< badmodule.errorType<<" BadRocs="<<std::hex<<SiPixelBadModule_->getBadRocs(detID)<<dec<<" "<<std::endl;
  if (badmodule.errorType == 0) {  // this is a whole dead module.
 
    for (signal_map_iterator i = theSignal.begin(); i != theSignal.end(); ++i) {
      i->second.set(0.);  // reset amplitude
    }
  } else {  // all other module types: half-modules and single ROCs.
    // Get Bad ROC position:
    //follow the example of getBadRocPositions in CondFormats/SiPixelObjects/src/SiPixelQuality.cc
    std::vector<GlobalPixel> badrocpositions(0);
    for (unsigned int j = 0; j < 16; j++) {
      if (SiPixelBadModule_->IsRocBad(detID, j) == true) {
        std::vector<CablingPathToDetUnit> path = map_.product()->pathToDetUnit(detID);
        typedef std::vector<CablingPathToDetUnit>::const_iterator IT;
        for (IT it = path.begin(); it != path.end(); ++it) {
          const PixelROC* myroc = map_.product()->findItem(*it);
          if (myroc->idInDetUnit() == j) {
            LocalPixel::RocRowCol local = {39, 25};  //corresponding to center of ROC row, col
            GlobalPixel global = myroc->toGlobal(LocalPixel(local));
            badrocpositions.push_back(global);
            break;
          }
        }
      }
    }  // end of getBadRocPositions
 
    for (signal_map_iterator i = theSignal.begin(); i != theSignal.end(); ++i) {
      std::pair<int, int> ip = PixelDigi::channelToPixel(i->first);  //get pixel pos
 
      for (std::vector<GlobalPixel>::const_iterator it = badrocpositions.begin(); it != badrocpositions.end(); ++it) {
        if (it->row >= 80 && ip.first >= 80) {
          if ((std::abs(ip.second - it->col) < 26)) {
            i->second.set(0.);
          } else if (it->row == 120 && ip.second - it->col == 26) {
            i->second.set(0.);
          } else if (it->row == 119 && it->col - ip.second == 26) {
            i->second.set(0.);
          }
        } else if (it->row < 80 && ip.first < 80) {
          if ((std::abs(ip.second - it->col) < 26)) {
            i->second.set(0.);
          } else if (it->row == 40 && ip.second - it->col == 26) {
            i->second.set(0.);
          } else if (it->row == 39 && it->col - ip.second == 26) {
            i->second.set(0.);
          }
        }
      }
    }
  }
}
 
bool SiPixelDigitizerAlgorithm::hitSignalReweight(const PSimHit& hit,
                                                  std::map<int, float, std::less<int> >& hit_signal,
                                                  const size_t hitIndex,
                                                  const unsigned int tofBin,
                                                  const PixelTopology* topol,
                                                  uint32_t detID,
                                                  signal_map_type& theSignal,
                                                  unsigned short int processType) {
  int irow_min = topol->nrows();
  int irow_max = 0;
  int icol_min = topol->ncolumns();
  int icol_max = 0;
 
  float chargeBefore = 0;
  float chargeAfter = 0;
  signal_map_type hitSignal;
  LocalVector direction = hit.exitPoint() - hit.entryPoint();
 
  for (std::map<int, float, std::less<int> >::const_iterator im = hit_signal.begin(); im != hit_signal.end(); ++im) {
    int chan = (*im).first;
    std::pair<int, int> pixelWithCharge = PixelDigi::channelToPixel(chan);
    //std::cout << "PixelHit - x: " << pixelWithCharge.first << " y: " << pixelWithCharge.second << "  With Charge:  " << (*im).second <<  std::endl;
 
    hitSignal[chan] += (makeDigiSimLinks_ ? Amplitude((*im).second, &hit, hitIndex, tofBin, (*im).second)
                                          : Amplitude((*im).second, (*im).second));
    chargeBefore += (*im).second;
 
    if (pixelWithCharge.first < irow_min)
      irow_min = pixelWithCharge.first;
    if (pixelWithCharge.first > irow_max)
      irow_max = pixelWithCharge.first;
    if (pixelWithCharge.second < icol_min)
      icol_min = pixelWithCharge.second;
    if (pixelWithCharge.second > icol_max)
      icol_max = pixelWithCharge.second;
  }
 
  LocalPoint hitEntryPoint = hit.entryPoint();
 
  float trajectoryScaleToPosition = hitEntryPoint.z() / direction.z();
 
  if ((hitEntryPoint.z() > 0 && direction.z() < 0) || (hitEntryPoint.z() < 0 && direction.z() > 0)) {
    trajectoryScaleToPosition *= -1;
  }
 
  LocalPoint hitPosition = hitEntryPoint + trajectoryScaleToPosition * direction;
 
  MeasurementPoint hitPositionPixel = topol->measurementPosition(hit.localPosition());
  std::pair<int, int> hitPixel =
      std::pair<int, int>(int(floor(hitPositionPixel.x())), int(floor(hitPositionPixel.y())));
 
  MeasurementPoint originPixel = MeasurementPoint(hitPixel.first - THX + 0.5, hitPixel.second - THY + 0.5);
  LocalPoint origin = topol->localPosition(originPixel);
 
  MeasurementPoint hitEntryPointPixel = topol->measurementPosition(hit.entryPoint());
  MeasurementPoint hitExitPointPixel = topol->measurementPosition(hit.exitPoint());
  std::pair<int, int> entryPixel =
      std::pair<int, int>(int(floor(hitEntryPointPixel.x())), int(floor(hitEntryPointPixel.y())));
  std::pair<int, int> exitPixel =
      std::pair<int, int>(int(floor(hitExitPointPixel.x())), int(floor(hitExitPointPixel.y())));
 
  int hitcol_min, hitcol_max, hitrow_min, hitrow_max;
  if (entryPixel.first > exitPixel.first) {
    hitrow_min = exitPixel.first;
    hitrow_max = entryPixel.first;
  } else {
    hitrow_min = entryPixel.first;
    hitrow_max = exitPixel.first;
  }
 
  if (entryPixel.second > exitPixel.second) {
    hitcol_min = exitPixel.second;
    hitcol_max = entryPixel.second;
  } else {
    hitcol_min = entryPixel.second;
    hitcol_max = exitPixel.second;
  }
 
#ifdef TP_DEBUG
  LocalPoint CMSSWhitPosition = hit.localPosition();
 
  LogDebug("Pixel Digitizer") << "\n"
                              << "Particle ID is: " << hit.particleType() << "\n"
                              << "Process type: " << hit.processType() << "\n"
                              << "HitPosition:"
                              << "\n"
                              << "Hit entry x/y/z: " << hit.entryPoint().x() << "  " << hit.entryPoint().y() << "  "
                              << hit.entryPoint().z() << "  "
                              << "Hit exit x/y/z: " << hit.exitPoint().x() << "  " << hit.exitPoint().y() << "  "
                              << hit.exitPoint().z() << "  "
 
                              << "Pixel Pos - X: " << hitPositionPixel.x() << " Y: " << hitPositionPixel.y() << "\n"
                              << "Cart.Cor. - X: " << CMSSWhitPosition.x() << " Y: " << CMSSWhitPosition.y() << "\n"
                              << "Z=0 Pos - X: " << hitPosition.x() << " Y: " << hitPosition.y() << "\n"
 
                              << "Origin of the template:"
                              << "\n"
                              << "Pixel Pos - X: " << originPixel.x() << " Y: " << originPixel.y() << "\n"
                              << "Cart.Cor. - X: " << origin.x() << " Y: " << origin.y() << "\n"
                              << "\n"
                              << "Entry/Exit:"
                              << "\n"
                              << "Entry - X: " << hit.entryPoint().x() << " Y: " << hit.entryPoint().y()
                              << " Z: " << hit.entryPoint().z() << "\n"
                              << "Exit - X: " << hit.exitPoint().x() << " Y: " << hit.exitPoint().y()
                              << " Z: " << hit.exitPoint().z() << "\n"
 
                              << "Entry - X Pixel: " << hitEntryPointPixel.x() << " Y Pixel: " << hitEntryPointPixel.y()
                              << "\n"
                              << "Exit - X Pixel: " << hitExitPointPixel.x() << " Y Pixel: " << hitExitPointPixel.y()
                              << "\n"
 
                              << "row min: " << irow_min << " col min: " << icol_min << "\n";
#endif
 
  if (!(irow_min <= hitrow_max && irow_max >= hitrow_min && icol_min <= hitcol_max && icol_max >= hitcol_min)) {
    // The clusters do not have an overlap, hence the hit is NOT reweighted
    return false;
  }
 
  float cmToMicrons = 10000.f;
 
  track[0] = (hitPosition.x() - origin.x()) * cmToMicrons;
  track[1] = (hitPosition.y() - origin.y()) * cmToMicrons;
  track[2] = 0.0f;  //Middle of sensor is origin for Z-axis
  track[3] = direction.x();
  track[4] = direction.y();
  track[5] = direction.z();
 
  array_2d pixrewgt(boost::extents[TXSIZE][TYSIZE]);
 
  for (int row = 0; row < TXSIZE; ++row) {
    for (int col = 0; col < TYSIZE; ++col) {
      pixrewgt[row][col] = 0;
    }
  }
 
  for (int row = 0; row < TXSIZE; ++row) {
    xdouble[row] = topol->isItBigPixelInX(hitPixel.first + row - THX);
  }
 
  for (int col = 0; col < TYSIZE; ++col) {
    ydouble[col] = topol->isItBigPixelInY(hitPixel.second + col - THY);
  }
 
  for (int row = 0; row < TXSIZE; ++row) {
    for (int col = 0; col < TYSIZE; ++col) {
      //Fill charges into 21x13 Pixel Array with hitPixel in centre
      pixrewgt[row][col] =
          hitSignal[PixelDigi::pixelToChannel(hitPixel.first + row - THX, hitPixel.second + col - THY)];
      //std::cout << "Signal in " << hitPixel.first + row - THX << "/" << hitPixel.second + col - THY << " is " << hitSignal[PixelDigi::pixelToChannel(hitPixel.first + row - THX, hitPixel.second + col - THY)] << std::endl;
    }
  }
 
  if (PrintClusters) {
    std::cout << "Cluster before reweighting: " << std::endl;
    printCluster(pixrewgt);
  }
 
  int ierr;
  // for unirradiated: 2nd argument is IDden
  // for irradiated: 2nd argument is IDnum
  if (UseReweighting == true) {
    int ID1 = dbobject_num->getTemplateID(detID);
    int ID0 = dbobject_den->getTemplateID(detID);
 
    if (ID0 == ID1) {
      return false;
    }
    ierr = PixelTempRewgt2D(ID0, ID1, pixrewgt);
  } else {
    ierr = PixelTempRewgt2D(IDden, IDden, pixrewgt);
  }
  if (ierr != 0) {
#ifdef TP_DEBUG
    LogDebug("PixelDigitizer ") << "Cluster Charge Reweighting did not work properly.";
#endif
    return false;
  }
 
  if (PrintClusters) {
    std::cout << "Cluster after reweighting: " << std::endl;
    printCluster(pixrewgt);
  }
 
  for (int row = 0; row < TXSIZE; ++row) {
    for (int col = 0; col < TYSIZE; ++col) {
      float charge = 0;
      charge = pixrewgt[row][col];
      if ((hitPixel.first + row - THX) >= 0 && (hitPixel.first + row - THX) < topol->nrows() &&
          (hitPixel.second + col - THY) >= 0 && (hitPixel.second + col - THY) < topol->ncolumns() && charge > 0) {
        chargeAfter += charge;
        theSignal[PixelDigi::pixelToChannel(hitPixel.first + row - THX, hitPixel.second + col - THY)] +=
            (makeDigiSimLinks_ ? Amplitude(charge, &hit, hitIndex, tofBin, charge) : Amplitude(charge, charge));
      }
    }
  }
 
  if (chargeBefore != 0. && chargeAfter == 0.) {
    return false;
  }
 
  if (PrintClusters) {
    std::cout << std::endl;
    std::cout << "Charges (before->after): " << chargeBefore << " -> " << chargeAfter << std::endl;
    std::cout << "Charge loss: " << (1 - chargeAfter / chargeBefore) * 100 << " %" << std::endl << std::endl;
  }
 
  return true;
}
 
// *******************************************************************************************************
// *******************************************************************************************************
int SiPixelDigitizerAlgorithm::PixelTempRewgt2D(int id_in, int id_rewgt, array_2d& cluster) {
  // Local variables
  int i, j, k, l, kclose;
  int nclusx, nclusy, success;
  float xsize, ysize, q50i, q100i, q50r, q10r, q100r, xhit2D, yhit2D, qclust, dist2, dmin2;
  float xy_in[BXM2][BYM2], xy_rewgt[BXM2][BYM2], xy_clust[TXSIZE][TYSIZE];
  int denx_clust[TXSIZE][TYSIZE], deny_clust[TXSIZE][TYSIZE];
  int goodWeightsUsed, nearbyWeightsUsed, noWeightsUsed;
  float cotalpha, cotbeta;
  // success = 0 is returned if everthing is OK
  success = 0;
 
  // Copy the array to remember original charges
  array_2d clust(cluster);
 
  // Take the pixel dimensions from the 2D template
  templ2D.getid(id_in);
  xsize = templ2D.xsize();
  ysize = templ2D.ysize();
 
  // Calculate the track angles
 
  if (std::abs(track[5]) > 0.f) {
    cotalpha = track[3] / track[5];  //if track[5] (direction in z) is 0 the hit is not processed by re-weighting
    cotbeta = track[4] / track[5];
  } else {
    LogDebug("Pixel Digitizer") << "Reweighting angle is not good!" << std::endl;
    return 9;  //returned value here indicates that no reweighting was done in this case
  }
 
  // The 2-D templates are defined on a shifted coordinate system wrt the 1D templates
  if (ydouble[0]) {
    yhit2D = track[1] - cotbeta * track[2] + ysize;
  } else {
    yhit2D = track[1] - cotbeta * track[2] + 0.5f * ysize;
  }
  if (xdouble[0]) {
    xhit2D = track[0] - cotalpha * track[2] + xsize;
  } else {
    xhit2D = track[0] - cotalpha * track[2] + 0.5f * xsize;
  }
 
  // Zero the input and output templates
  for (i = 0; i < BYM2; ++i) {
    for (j = 0; j < BXM2; ++j) {
      xy_in[j][i] = 0.f;
      xy_rewgt[j][i] = 0.f;
    }
  }
 
  // Next, interpolate the CMSSW template needed to analyze this cluster
 
  if (!templ2D.xytemp(id_in, cotalpha, cotbeta, xhit2D, yhit2D, ydouble, xdouble, xy_in)) {
    success = 1;
  }
  if (success != 0) {
#ifdef TP_DEBUG
    LogDebug("Pixel Digitizer") << "No matching template found" << std::endl;
#endif
    return 2;
  }
 
  if (PrintTemplates) {
    std::cout << "Template unirrad: " << std::endl;
    printCluster(xy_in);
  }
 
  q50i = templ2D.s50();
  //q50i = 0;
  q100i = 2.f * q50i;
 
  // Check that the cluster container is a 13x21 matrix
 
  if (cluster.num_dimensions() != 2) {
    LogWarning("Pixel Digitizer") << "Cluster is not 2-dimensional. Return." << std::endl;
    return 3;
  }
  nclusx = (int)cluster.shape()[0];
  nclusy = (int)cluster.shape()[1];
  if (nclusx != TXSIZE || xdouble.size() != TXSIZE) {
    LogWarning("Pixel Digitizer") << "Sizes in x do not match: nclusx=" << nclusx << "  xdoubleSize=" << xdouble.size()
                                  << "  TXSIZE=" << TXSIZE << ". Return." << std::endl;
    return 4;
  }
  if (nclusy != TYSIZE || ydouble.size() != TYSIZE) {
    LogWarning("Pixel Digitizer") << "Sizes in y do not match. Return." << std::endl;
    return 5;
  }
 
  // Sum initial charge in the cluster
 
  qclust = 0.f;
  for (i = 0; i < TYSIZE; ++i) {
    for (j = 0; j < TXSIZE; ++j) {
      xy_clust[j][i] = 0.f;
      denx_clust[j][i] = 0;
      deny_clust[j][i] = 0;
      if (cluster[j][i] > q100i) {
        qclust += cluster[j][i];
      }
    }
  }
 
  // Next, interpolate the physical output template needed to reweight
 
  if (!templ2D.xytemp(id_rewgt, cotalpha, cotbeta, xhit2D, yhit2D, ydouble, xdouble, xy_rewgt)) {
    success = 1;
  }
 
  if (PrintTemplates) {
    std::cout << "Template irrad: " << std::endl;
    printCluster(xy_rewgt);
  }
 
  q50r = templ2D.s50();
  q100r = 2.f * q50r;
  q10r = 0.2f * q50r;
 
  // Find all non-zero denominator pixels in the input template and generate "inside" weights
 
  int ntpix = 0;
  int ncpix = 0;
  std::vector<int> ytclust;
  std::vector<int> xtclust;
  std::vector<int> ycclust;
  std::vector<int> xcclust;
  qclust = 0.f;
  for (i = 0; i < TYSIZE; ++i) {
    for (j = 0; j < TXSIZE; ++j) {
      if (xy_in[j + 1][i + 1] > q100i) {
        ++ntpix;
        ytclust.push_back(i);
        xtclust.push_back(j);
        xy_clust[j][i] = xy_rewgt[j + 1][i + 1] / xy_in[j + 1][i + 1];
        denx_clust[j][i] = j;
        deny_clust[j][i] = i;
      }
    }
  }
 
  // Find all non-zero numerator pixels not matched to denominator in the output template and generate "inside" weights
 
  for (i = 0; i < TYSIZE; ++i) {
    for (j = 0; j < TXSIZE; ++j) {
      if (xy_rewgt[j + 1][i + 1] > q10r && xy_clust[j][i] == 0.f && ntpix > 0) {
        // Search for nearest denominator pixel
        dmin2 = 10000.f;
        kclose = 0;
        for (k = 0; k < ntpix; ++k) {
          dist2 = (i - ytclust[k]) * (i - ytclust[k]) + 0.44444f * (j - xtclust[k]) * (j - xtclust[k]);
          if (dist2 < dmin2) {
            dmin2 = dist2;
            kclose = k;
          }
        }
        xy_clust[j][i] = xy_rewgt[j + 1][i + 1] / xy_in[xtclust[kclose] + 1][ytclust[kclose] + 1];
        denx_clust[j][i] = xtclust[kclose];
        deny_clust[j][i] = ytclust[kclose];
      }
    }
  }
 
  if (PrintTemplates) {
    std::cout << "Weights:" << std::endl;
    printCluster(xy_clust);
  }
 
  // Do the reweighting
  goodWeightsUsed = 0;
  nearbyWeightsUsed = 0;
  noWeightsUsed = 0;
 
  for (i = 0; i < TYSIZE; ++i) {
    for (j = 0; j < TXSIZE; ++j) {
      if (xy_clust[j][i] > 0.f) {
        cluster[j][i] = xy_clust[j][i] * clust[denx_clust[j][i]][deny_clust[j][i]];
        if (cluster[j][i] > q100r) {
          qclust += cluster[j][i];
        }
        if (cluster[j][i] > 0) {
          goodWeightsUsed++;
        }
      } else {
        if (clust[j][i] > 0.f) {
          ++ncpix;
          ycclust.push_back(i);
          xcclust.push_back(j);
        }
      }
    }
  }
 
  // Now reweight pixels outside of template footprint using closest weights
 
  if (ncpix > 0) {
    for (l = 0; l < ncpix; ++l) {
      i = ycclust[l];
      j = xcclust[l];
      dmin2 = 10000.f;
      kclose = 0;
      for (k = 0; k < ntpix; ++k) {
        dist2 = (i - ytclust[k]) * (i - ytclust[k]) + 0.44444f * (j - xtclust[k]) * (j - xtclust[k]);
        if (dist2 < dmin2) {
          dmin2 = dist2;
          kclose = k;
        }
      }
      if (dmin2 < 5.f) {
        nearbyWeightsUsed++;
        cluster[j][i] *= xy_clust[xtclust[kclose]][ytclust[kclose]];
        if (cluster[j][i] > q100r) {
          qclust += cluster[j][i];
        }
      } else {
        noWeightsUsed++;
        cluster[j][i] = 0.f;
      }
    }
  }
 
  return success;
}  // PixelTempRewgt2D
 
void SiPixelDigitizerAlgorithm::printCluster(array_2d& cluster) {
  for (int col = 0; col < TYSIZE; ++col) {
    for (int row = 0; row < TXSIZE; ++row) {
      std::cout << std::setw(10) << std::setprecision(0) << std::fixed;
      std::cout << cluster[row][col];
    }
    std::cout << std::endl;
  }
  std::cout.copyfmt(std::ios(nullptr));
}
 
void SiPixelDigitizerAlgorithm::printCluster(float arr[BXM2][BYM2]) {
  for (int col = 0; col < BYM2; ++col) {
    for (int row = 0; row < BXM2; ++row) {
      std::cout << std::setw(10) << std::setprecision(0) << std::fixed;
      std::cout << arr[row][col];
    }
    std::cout << std::endl;
  }
  std::cout.copyfmt(std::ios(nullptr));
}
 
void SiPixelDigitizerAlgorithm::printCluster(float arr[TXSIZE][TYSIZE]) {
  for (int col = 0; col < TYSIZE; ++col) {
    for (int row = 0; row < TXSIZE; ++row) {
      std::cout << std::setw(10) << std::fixed;
      std::cout << arr[row][col];
    }
    std::cout << std::endl;
  }
  std::cout.copyfmt(std::ios(nullptr));
}