PixelCPEGeneric.cc

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#include "RecoLocalTracker/SiPixelRecHits/interface/PixelCPEGeneric.h"

#include "Geometry/CommonDetUnit/interface/PixelGeomDetUnit.h"
#include "Geometry/TrackerGeometryBuilder/interface/RectangularPixelTopology.h"

// this is needed to get errors from templates
#include "CondFormats/SiPixelTransient/interface/SiPixelTemplate.h"
#include "DataFormats/DetId/interface/DetId.h"

// Services
#include "FWCore/MessageLogger/interface/MessageLogger.h"
#include "MagneticField/Engine/interface/MagneticField.h"

#include "boost/multi_array.hpp"

#include <iostream>
using namespace std;

namespace {
  constexpr float micronsToCm = 1.0e-4;
  const bool MYDEBUG = false;
}  // namespace

//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
PixelCPEGeneric::PixelCPEGeneric(edm::ParameterSet const& conf,
                                 const MagneticField* mag,
                                 const TrackerGeometry& geom,
                                 const TrackerTopology& ttopo,
                                 const SiPixelLorentzAngle* lorentzAngle,
                                 const SiPixelGenErrorDBObject* genErrorDBObject,
                                 const SiPixelLorentzAngle* lorentzAngleWidth = nullptr)
    : PixelCPEBase(conf, mag, geom, ttopo, lorentzAngle, genErrorDBObject, nullptr, lorentzAngleWidth, 0) {
  if (theVerboseLevel > 0)
    LogDebug("PixelCPEGeneric") << " constructing a generic algorithm for ideal pixel detector.\n"
                                << " CPEGeneric:: VerboseLevel = " << theVerboseLevel;

  // Externally settable cuts
  the_eff_charge_cut_lowX = conf.getParameter<double>("eff_charge_cut_lowX");
  the_eff_charge_cut_lowY = conf.getParameter<double>("eff_charge_cut_lowY");
  the_eff_charge_cut_highX = conf.getParameter<double>("eff_charge_cut_highX");
  the_eff_charge_cut_highY = conf.getParameter<double>("eff_charge_cut_highY");
  the_size_cutX = conf.getParameter<double>("size_cutX");
  the_size_cutY = conf.getParameter<double>("size_cutY");

  EdgeClusterErrorX_ = conf.getParameter<double>("EdgeClusterErrorX");
  EdgeClusterErrorY_ = conf.getParameter<double>("EdgeClusterErrorY");

  // Externally settable flags to inflate errors
  inflate_errors = conf.getParameter<bool>("inflate_errors");
  inflate_all_errors_no_trk_angle = conf.getParameter<bool>("inflate_all_errors_no_trk_angle");

  UseErrorsFromTemplates_ = conf.getParameter<bool>("UseErrorsFromTemplates");
  TruncatePixelCharge_ = conf.getParameter<bool>("TruncatePixelCharge");
  IrradiationBiasCorrection_ = conf.getParameter<bool>("IrradiationBiasCorrection");
  DoCosmics_ = conf.getParameter<bool>("DoCosmics");
  //LoadTemplatesFromDB_       = conf.getParameter<bool>("LoadTemplatesFromDB");

  // no clear what upgrade means, is it phase1, phase2? Probably delete.
  isUpgrade_ = false;
  if (conf.getParameter<bool>("Upgrade"))
    isUpgrade_ = true;

  // Select the position error source
  // For upgrde and cosmics force the use simple errors
  if (isUpgrade_ || (DoCosmics_))
    UseErrorsFromTemplates_ = false;

  if (!UseErrorsFromTemplates_ && (TruncatePixelCharge_ || IrradiationBiasCorrection_ || LoadTemplatesFromDB_)) {
    throw cms::Exception("PixelCPEGeneric::PixelCPEGeneric: ")
        << "\nERROR: UseErrorsFromTemplates_ is set to False in PixelCPEGeneric_cfi.py. "
        << " In this case it does not make sense to set any of the following to True: "
        << " TruncatePixelCharge_, IrradiationBiasCorrection_, DoCosmics_, LoadTemplatesFromDB_ !!!"
        << "\n\n";
  }

  // Use errors from templates or from GenError
  if (UseErrorsFromTemplates_) {
    if (LoadTemplatesFromDB_) {  // From DB
      if (!SiPixelGenError::pushfile(*genErrorDBObject_, thePixelGenError_))
        throw cms::Exception("InvalidCalibrationLoaded")
            << "ERROR: GenErrors not filled correctly. Check the sqlite file. Using SiPixelTemplateDBObject version "
            << (*genErrorDBObject_).version();
      if (MYDEBUG)
        cout << "Loaded genErrorDBObject v" << (*genErrorDBObject_).version() << endl;
    } else {  // From file
      if (!SiPixelGenError::pushfile(-999, thePixelGenError_))
        throw cms::Exception("InvalidCalibrationLoaded")
            << "ERROR: GenErrors not loaded correctly from text file. Reconstruction will fail.";
    }  // if load from DB

  } else {
    if (MYDEBUG)
      cout << " Use simple parametrised errors " << endl;
  }  // if ( UseErrorsFromTemplates_ )

  // Rechit errors in case other, more correct, errors are not vailable
  // This are constants. Maybe there is a more efficienct way to store them.
  if (!isUpgrade_) {  // normal case
    xerr_barrel_l1_ = {0.00115, 0.00120, 0.00088};
    xerr_barrel_l1_def_ = 0.01030;
    yerr_barrel_l1_ = {0.00375, 0.00230, 0.00250, 0.00250, 0.00230, 0.00230, 0.00210, 0.00210, 0.00240};
    yerr_barrel_l1_def_ = 0.00210;
    xerr_barrel_ln_ = {0.00115, 0.00120, 0.00088};
    xerr_barrel_ln_def_ = 0.01030;
    yerr_barrel_ln_ = {0.00375, 0.00230, 0.00250, 0.00250, 0.00230, 0.00230, 0.00210, 0.00210, 0.00240};
    yerr_barrel_ln_def_ = 0.00210;
    xerr_endcap_ = {0.0020, 0.0020};
    xerr_endcap_def_ = 0.0020;
    yerr_endcap_ = {0.00210};
    yerr_endcap_def_ = 0.00075;
  } else {  // isUpgrade=true
    xerr_barrel_ln_ = {0.00025, 0.00030, 0.00035, 0.00035};
    xerr_barrel_ln_def_ = 0.00035;
    yerr_barrel_ln_ = {0.00210, 0.00115, 0.00125};
    yerr_barrel_ln_def_ = 0.00125;
    xerr_endcap_ = {0.00072, 0.00025};
    xerr_endcap_def_ = 0.00060;
    yerr_endcap_ = {0.00289, 0.00025};
    yerr_endcap_def_ = 0.00180;

    if (conf.getParameter<bool>("SmallPitch")) {
      xerr_barrel_l1_ = {0.00104, 0.000691, 0.00122};
      xerr_barrel_l1_def_ = 0.00321;
      yerr_barrel_l1_ = {0.00199, 0.00136, 0.0015, 0.00153, 0.00152, 0.00171, 0.00154, 0.00157, 0.00154};
      yerr_barrel_l1_def_ = 0.00164;
    } else {
      xerr_barrel_l1_ = {0.00025, 0.00030, 0.00035, 0.00035};
      xerr_barrel_l1_def_ = 0.00035;
      yerr_barrel_l1_ = {0.00210, 0.00115, 0.00125};
      yerr_barrel_l1_def_ = 0.00125;
    }
  }  // if isUpgrade

  if (MYDEBUG) {
    cout << "From PixelCPEGeneric::PixelCPEGeneric(...)" << endl;
    cout << "(int)UseErrorsFromTemplates_ = " << (int)UseErrorsFromTemplates_ << endl;
    cout << "TruncatePixelCharge_         = " << (int)TruncatePixelCharge_ << endl;
    cout << "IrradiationBiasCorrection_   = " << (int)IrradiationBiasCorrection_ << endl;
    cout << "(int)DoCosmics_              = " << (int)DoCosmics_ << endl;
    cout << "(int)LoadTemplatesFromDB_    = " << (int)LoadTemplatesFromDB_ << endl;
  }
}

PixelCPEBase::ClusterParam* PixelCPEGeneric::createClusterParam(const SiPixelCluster& cl) const {
  return new ClusterParamGeneric(cl);
}

//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
LocalPoint PixelCPEGeneric::localPosition(DetParam const& theDetParam, ClusterParam& theClusterParamBase) const {
  ClusterParamGeneric& theClusterParam = static_cast<ClusterParamGeneric&>(theClusterParamBase);

  //cout<<" in PixelCPEGeneric:localPosition - "<<endl; //dk

  float chargeWidthX = (theDetParam.lorentzShiftInCmX * theDetParam.widthLAFractionX);
  float chargeWidthY = (theDetParam.lorentzShiftInCmY * theDetParam.widthLAFractionY);
  float shiftX = 0.5f * theDetParam.lorentzShiftInCmX;
  float shiftY = 0.5f * theDetParam.lorentzShiftInCmY;

  //cout<<" main la width "<<chargeWidthX<<" "<<chargeWidthY<<endl;

  if (UseErrorsFromTemplates_) {
    float qclus = theClusterParam.theCluster->charge();
    float locBz = theDetParam.bz;
    float locBx = theDetParam.bx;
    //cout << "PixelCPEGeneric::localPosition(...) : locBz = " << locBz << endl;

    theClusterParam.pixmx = -999;     // max pixel charge for truncation of 2-D cluster
    theClusterParam.sigmay = -999.9;  // CPE Generic y-error for multi-pixel cluster
    theClusterParam.deltay = -999.9;  // CPE Generic y-bias for multi-pixel cluster
    theClusterParam.sigmax = -999.9;  // CPE Generic x-error for multi-pixel cluster
    theClusterParam.deltax = -999.9;  // CPE Generic x-bias for multi-pixel cluster
    theClusterParam.sy1 = -999.9;     // CPE Generic y-error for single single-pixel
    theClusterParam.dy1 = -999.9;     // CPE Generic y-bias for single single-pixel cluster
    theClusterParam.sy2 = -999.9;     // CPE Generic y-error for single double-pixel cluster
    theClusterParam.dy2 = -999.9;     // CPE Generic y-bias for single double-pixel cluster
    theClusterParam.sx1 = -999.9;     // CPE Generic x-error for single single-pixel cluster
    theClusterParam.dx1 = -999.9;     // CPE Generic x-bias for single single-pixel cluster
    theClusterParam.sx2 = -999.9;     // CPE Generic x-error for single double-pixel cluster
    theClusterParam.dx2 = -999.9;     // CPE Generic x-bias for single double-pixel cluster

    SiPixelGenError gtempl(thePixelGenError_);
    int gtemplID_ = theDetParam.detTemplateId;

    //int gtemplID0 = genErrorDBObject_->getGenErrorID(theDetParam.theDet->geographicalId().rawId());
    //if(gtemplID0!=gtemplID_) cout<<" different id "<< gtemplID_<<" "<<gtemplID0<<endl;

    theClusterParam.qBin_ = gtempl.qbin(gtemplID_,
                                        theClusterParam.cotalpha,
                                        theClusterParam.cotbeta,
                                        locBz,
                                        locBx,
                                        qclus,
                                        IrradiationBiasCorrection_,
                                        theClusterParam.pixmx,
                                        theClusterParam.sigmay,
                                        theClusterParam.deltay,
                                        theClusterParam.sigmax,
                                        theClusterParam.deltax,
                                        theClusterParam.sy1,
                                        theClusterParam.dy1,
                                        theClusterParam.sy2,
                                        theClusterParam.dy2,
                                        theClusterParam.sx1,
                                        theClusterParam.dx1,
                                        theClusterParam.sx2,
                                        theClusterParam.dx2);

    // now use the charge widths stored in the new generic template headers (change to the
    // incorrect sign convention of the base class)
    bool useLAWidthFromGenError = false;
    if (useLAWidthFromGenError) {
      chargeWidthX = (-micronsToCm * gtempl.lorxwidth());
      chargeWidthY = (-micronsToCm * gtempl.lorywidth());
      if (MYDEBUG)
        cout << " redefine la width (gen-error) " << chargeWidthX << " " << chargeWidthY << endl;
    }
    if (MYDEBUG)
      cout << " GenError: " << gtemplID_ << endl;

    // These numbers come in microns from the qbin(...) call. Transform them to cm.
    theClusterParam.deltax = theClusterParam.deltax * micronsToCm;
    theClusterParam.dx1 = theClusterParam.dx1 * micronsToCm;
    theClusterParam.dx2 = theClusterParam.dx2 * micronsToCm;

    theClusterParam.deltay = theClusterParam.deltay * micronsToCm;
    theClusterParam.dy1 = theClusterParam.dy1 * micronsToCm;
    theClusterParam.dy2 = theClusterParam.dy2 * micronsToCm;

    theClusterParam.sigmax = theClusterParam.sigmax * micronsToCm;
    theClusterParam.sx1 = theClusterParam.sx1 * micronsToCm;
    theClusterParam.sx2 = theClusterParam.sx2 * micronsToCm;

    theClusterParam.sigmay = theClusterParam.sigmay * micronsToCm;
    theClusterParam.sy1 = theClusterParam.sy1 * micronsToCm;
    theClusterParam.sy2 = theClusterParam.sy2 * micronsToCm;

  }  // if ( UseErrorsFromTemplates_ )
  else {
    theClusterParam.qBin_ = 0;
  }

  int Q_f_X;  
  int Q_l_X;  
  int Q_f_Y;  
  int Q_l_Y;  
  collect_edge_charges(theClusterParam, Q_f_X, Q_l_X, Q_f_Y, Q_l_Y);

  //--- Find the inner widths along X and Y in one shot.  We
  //--- compute the upper right corner of the inner pixels
  //--- (== lower left corner of upper right pixel) and
  //--- the lower left corner of the inner pixels
  //--- (== upper right corner of lower left pixel), and then
  //--- subtract these two points in the formula.

  //--- Upper Right corner of Lower Left pixel -- in measurement frame
  MeasurementPoint meas_URcorn_LLpix(theClusterParam.theCluster->minPixelRow() + 1.0,
                                     theClusterParam.theCluster->minPixelCol() + 1.0);

  //--- Lower Left corner of Upper Right pixel -- in measurement frame
  MeasurementPoint meas_LLcorn_URpix(theClusterParam.theCluster->maxPixelRow(),
                                     theClusterParam.theCluster->maxPixelCol());

  //--- These two now converted into the local
  LocalPoint local_URcorn_LLpix;
  LocalPoint local_LLcorn_URpix;

  // PixelCPEGeneric can be used with or without track angles
  // If PixelCPEGeneric is called with track angles, use them to correct for bows/kinks:
  if (theClusterParam.with_track_angle) {
    local_URcorn_LLpix = theDetParam.theTopol->localPosition(meas_URcorn_LLpix, theClusterParam.loc_trk_pred);
    local_LLcorn_URpix = theDetParam.theTopol->localPosition(meas_LLcorn_URpix, theClusterParam.loc_trk_pred);
  } else {
    local_URcorn_LLpix = theDetParam.theTopol->localPosition(meas_URcorn_LLpix);
    local_LLcorn_URpix = theDetParam.theTopol->localPosition(meas_LLcorn_URpix);
  }

#ifdef EDM_ML_DEBUG
  if (theVerboseLevel > 20) {
    cout << "\n\t >>> theClusterParam.theCluster->x = " << theClusterParam.theCluster->x()
         << "\n\t >>> theClusterParam.theCluster->y = " << theClusterParam.theCluster->y()
         << "\n\t >>> cluster: minRow = " << theClusterParam.theCluster->minPixelRow()
         << "  minCol = " << theClusterParam.theCluster->minPixelCol()
         << "\n\t >>> cluster: maxRow = " << theClusterParam.theCluster->maxPixelRow()
         << "  maxCol = " << theClusterParam.theCluster->maxPixelCol()
         << "\n\t >>> meas: inner lower left  = " << meas_URcorn_LLpix.x() << "," << meas_URcorn_LLpix.y()
         << "\n\t >>> meas: inner upper right = " << meas_LLcorn_URpix.x() << "," << meas_LLcorn_URpix.y() << endl;
  }
#endif

  //--- &&& Note that the cuts below should not be hardcoded (like in Orca and
  //--- &&& CPEFromDetPosition/PixelCPEInitial), but rather be
  //--- &&& externally settable (but tracked) parameters.

  //--- Position, including the half lorentz shift

#ifdef EDM_ML_DEBUG
  if (theVerboseLevel > 20)
    cout << "\t >>> Generic:: processing X" << endl;
#endif

  float xPos =
      generic_position_formula(theClusterParam.theCluster->sizeX(),
                               Q_f_X,
                               Q_l_X,
                               local_URcorn_LLpix.x(),
                               local_LLcorn_URpix.x(),
                               chargeWidthX,  // lorentz shift in cm
                               theDetParam.theThickness,
                               theClusterParam.cotalpha,
                               theDetParam.thePitchX,
                               theDetParam.theRecTopol->isItBigPixelInX(theClusterParam.theCluster->minPixelRow()),
                               theDetParam.theRecTopol->isItBigPixelInX(theClusterParam.theCluster->maxPixelRow()),
                               the_eff_charge_cut_lowX,
                               the_eff_charge_cut_highX,
                               the_size_cutX);  // cut for eff charge width &&&

  // apply the lorentz offset correction
  xPos = xPos + shiftX;

#ifdef EDM_ML_DEBUG
  if (theVerboseLevel > 20)
    cout << "\t >>> Generic:: processing Y" << endl;
#endif

  float yPos =
      generic_position_formula(theClusterParam.theCluster->sizeY(),
                               Q_f_Y,
                               Q_l_Y,
                               local_URcorn_LLpix.y(),
                               local_LLcorn_URpix.y(),
                               chargeWidthY,  // lorentz shift in cm
                               theDetParam.theThickness,
                               theClusterParam.cotbeta,
                               theDetParam.thePitchY,
                               theDetParam.theRecTopol->isItBigPixelInY(theClusterParam.theCluster->minPixelCol()),
                               theDetParam.theRecTopol->isItBigPixelInY(theClusterParam.theCluster->maxPixelCol()),
                               the_eff_charge_cut_lowY,
                               the_eff_charge_cut_highY,
                               the_size_cutY);  // cut for eff charge width &&&

  // apply the lorentz offset correction
  yPos = yPos + shiftY;

  // Apply irradiation corrections. NOT USED FOR NOW
  if (IrradiationBiasCorrection_) {
    if (theClusterParam.theCluster->sizeX() == 1) {  // size=1
      // ggiurgiu@jhu.edu, 02/03/09 : for size = 1, the Lorentz shift is already accounted by the irradiation correction
      //float tmp1 =  (0.5 * theDetParam.lorentzShiftInCmX);
      //cout << "Apply correction correction_dx1 = " << theClusterParam.dx1 << " to xPos = " << xPos;
      xPos = xPos - (0.5f * theDetParam.lorentzShiftInCmX);
      // Find if pixel is double (big).
      bool bigInX = theDetParam.theRecTopol->isItBigPixelInX(theClusterParam.theCluster->maxPixelRow());
      if (!bigInX)
        xPos -= theClusterParam.dx1;
      else
        xPos -= theClusterParam.dx2;
      //cout<<" to "<<xPos<<" "<<(tmp1+theClusterParam.dx1)<<endl;
    } else {  // size>1
      //cout << "Apply correction correction_deltax = " << theClusterParam.deltax << " to xPos = " << xPos;
      xPos -= theClusterParam.deltax;
      //cout<<" to "<<xPos<<endl;
    }

    if (theClusterParam.theCluster->sizeY() == 1) {
      // ggiurgiu@jhu.edu, 02/03/09 : for size = 1, the Lorentz shift is already accounted by the irradiation correction
      yPos = yPos - (0.5f * theDetParam.lorentzShiftInCmY);

      // Find if pixel is double (big).
      bool bigInY = theDetParam.theRecTopol->isItBigPixelInY(theClusterParam.theCluster->maxPixelCol());
      if (!bigInY)
        yPos -= theClusterParam.dy1;
      else
        yPos -= theClusterParam.dy2;

    } else {
      //cout << "Apply correction correction_deltay = " << theClusterParam.deltay << " to yPos = " << yPos << endl;
      yPos -= theClusterParam.deltay;
    }

  }  // if ( IrradiationBiasCorrection_ )

  //cout<<" in PixelCPEGeneric:localPosition - pos = "<<xPos<<" "<<yPos<<endl; //dk

  //--- Now put the two together
  LocalPoint pos_in_local(xPos, yPos);
  return pos_in_local;
}

//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
float PixelCPEGeneric::generic_position_formula(int size,                    
                                                int Q_f,                     
                                                int Q_l,                     
                                                float upper_edge_first_pix,  
                                                float lower_edge_last_pix,   
                                                float lorentz_shift,         
                                                float theThickness,          //detector thickness
                                                float cot_angle,             
                                                float pitch,                 
                                                bool first_is_big,           
                                                bool last_is_big,            
                                                float eff_charge_cut_low,    
                                                float eff_charge_cut_high,   
                                                float size_cut               
                                                ) const {
  //cout<<" in PixelCPEGeneric:generic_position_formula - "<<endl; //dk

  float geom_center = 0.5f * (upper_edge_first_pix + lower_edge_last_pix);

  //--- The case of only one pixel in this projection is separate.  Note that
  //--- here first_pix == last_pix, so the average of the two is still the
  //--- center of the pixel.
  if (size == 1) {
    return geom_center;
  }

  //--- Width of the clusters minus the edge (first and last) pixels.
  //--- In the note, they are denoted x_F and x_L (and y_F and y_L)
  float W_inner = lower_edge_last_pix - upper_edge_first_pix;  // in cm

  //--- Predicted charge width from geometry
  float W_pred = theThickness * cot_angle  // geometric correction (in cm)
                 - lorentz_shift;          // (in cm) &&& check fpix!

  //cout<<" in PixelCPEGeneric:generic_position_formula - "<<W_inner<<" "<<W_pred<<endl; //dk

  //--- Total length of the two edge pixels (first+last)
  float sum_of_edge = 2.0f;
  if (first_is_big)
    sum_of_edge += 1.0f;
  if (last_is_big)
    sum_of_edge += 1.0f;

  //--- The `effective' charge width -- particle's path in first and last pixels only
  float W_eff = std::abs(W_pred) - W_inner;

  //--- If the observed charge width is inconsistent with the expectations
  //--- based on the track, do *not* use W_pred-W_innner.  Instead, replace
  //--- it with an *average* effective charge width, which is the average
  //--- length of the edge pixels.
  //
  //  bool usedEdgeAlgo = false;
  if ((size >= size_cut) || ((W_eff / pitch < eff_charge_cut_low) | (W_eff / pitch > eff_charge_cut_high))) {
    W_eff = pitch * 0.5f * sum_of_edge;  // ave. length of edge pixels (first+last) (cm)
                                         //  usedEdgeAlgo = true;
#ifdef EDM_ML_DEBUG
    nRecHitsUsedEdge_++;
#endif
  }

  //--- Finally, compute the position in this projection
  float Qdiff = Q_l - Q_f;
  float Qsum = Q_l + Q_f;

  //--- Temporary fix for clusters with both first and last pixel with charge = 0
  if (Qsum == 0)
    Qsum = 1.0f;
  //float hit_pos = geom_center + 0.5f*(Qdiff/Qsum) * W_eff + half_lorentz_shift;
  float hit_pos = geom_center + 0.5f * (Qdiff / Qsum) * W_eff;

  //cout<<" in PixelCPEGeneric:generic_position_formula - "<<hit_pos<<" "<<lorentz_shift*0.5<<endl; //dk

#ifdef EDM_ML_DEBUG
  //--- Debugging output
#warning "Debug printouts in PixelCPEGeneric.cc has been commented because they cannot be compiled"
  /*   This part is commented because some variables used here are not defined !!
    if (theVerboseLevel > 20) {
    if ( theDetParam.thePart == GeomDetEnumerators::PixelBarrel || theDetParam.thePart == GeomDetEnumerators::P1PXB ) {
    cout << "\t >>> We are in the Barrel." ;
    } else if ( theDetParam.thePart == GeomDetEnumerators::PixelEndcap ||
    theDetParam.thePart == GeomDetEnumerators::P1PXEC ||
    theDetParam.thePart == GeomDetEnumerators::P2PXEC ) {
    cout << "\t >>> We are in the Forward." ;
    } else {
    cout << "\t >>> We are in an unexpected subdet " << theDetParam.thePart;
    }
    cout
    << "\n\t >>> cot(angle) = " << cot_angle << "  pitch = " << pitch << "  size = " << size
    << "\n\t >>> upper_edge_first_pix = " << upper_edge_first_pix
    << "\n\t >>> lower_edge_last_pix  = " << lower_edge_last_pix
    << "\n\t >>> geom_center          = " << geom_center
    << "\n\t >>> half_lorentz_shift   = " << half_lorentz_shift
    << "\n\t >>> W_inner              = " << W_inner
    << "\n\t >>> W_pred               = " << W_pred
    << "\n\t >>> W_eff(orig)          = " << fabs( W_pred ) - W_inner
    << "\n\t >>> W_eff(used)          = " << W_eff
    << "\n\t >>> sum_of_edge          = " << sum_of_edge
    << "\n\t >>> Qdiff = " << Qdiff << "  Qsum = " << Qsum
    << "\n\t >>> hit_pos              = " << hit_pos
    << "\n\t >>> RecHits: total = " << nRecHitsTotal_
    << "  used edge = " << nRecHitsUsedEdge_
    << endl;
    if (usedEdgeAlgo)
    cout << "\n\t >>> Used Edge algorithm." ;
    else
    cout << "\n\t >>> Used angle information." ;
    cout << endl;
    }
    */
#endif

  return hit_pos;
}

//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
void PixelCPEGeneric::collect_edge_charges(ClusterParam& theClusterParamBase,  
                                           int& Q_f_X,                         
                                           int& Q_l_X,                         
                                           int& Q_f_Y,                         
                                           int& Q_l_Y                          
                                           ) const {
  ClusterParamGeneric& theClusterParam = static_cast<ClusterParamGeneric&>(theClusterParamBase);

  // Initialize return variables.
  Q_f_X = Q_l_X = 0.0;
  Q_f_Y = Q_l_Y = 0.0;

  // Obtain boundaries in index units
  int xmin = theClusterParam.theCluster->minPixelRow();
  int xmax = theClusterParam.theCluster->maxPixelRow();
  int ymin = theClusterParam.theCluster->minPixelCol();
  int ymax = theClusterParam.theCluster->maxPixelCol();

  // Iterate over the pixels.
  int isize = theClusterParam.theCluster->size();
  for (int i = 0; i != isize; ++i) {
    auto const& pixel = theClusterParam.theCluster->pixel(i);
    // ggiurgiu@fnal.gov: add pixel charge truncation
    int pix_adc = pixel.adc;
    if (UseErrorsFromTemplates_ && TruncatePixelCharge_)
      pix_adc = std::min(pix_adc, theClusterParam.pixmx);

    //
    // X projection
    if (pixel.x == xmin)
      Q_f_X += pix_adc;
    if (pixel.x == xmax)
      Q_l_X += pix_adc;
    //
    // Y projection
    if (pixel.y == ymin)
      Q_f_Y += pix_adc;
    if (pixel.y == ymax)
      Q_l_Y += pix_adc;
  }

  return;
}

//==============  INFLATED ERROR AND ERRORS FROM DB BELOW  ================

//-------------------------------------------------------------------------
//  Hit error in the local frame
//-------------------------------------------------------------------------
LocalError PixelCPEGeneric::localError(DetParam const& theDetParam, ClusterParam& theClusterParamBase) const {
  ClusterParamGeneric& theClusterParam = static_cast<ClusterParamGeneric&>(theClusterParamBase);

  const bool localPrint = false;
  // Default errors are the maximum error used for edge clusters.
  // These are determined by looking at residuals for edge clusters
  float xerr = EdgeClusterErrorX_ * micronsToCm;
  float yerr = EdgeClusterErrorY_ * micronsToCm;

  // Find if cluster is at the module edge.
  int maxPixelCol = theClusterParam.theCluster->maxPixelCol();
  int maxPixelRow = theClusterParam.theCluster->maxPixelRow();
  int minPixelCol = theClusterParam.theCluster->minPixelCol();
  int minPixelRow = theClusterParam.theCluster->minPixelRow();

  bool edgex = (theDetParam.theRecTopol->isItEdgePixelInX(minPixelRow)) ||
               (theDetParam.theRecTopol->isItEdgePixelInX(maxPixelRow));
  bool edgey = (theDetParam.theRecTopol->isItEdgePixelInY(minPixelCol)) ||
               (theDetParam.theRecTopol->isItEdgePixelInY(maxPixelCol));

  unsigned int sizex = theClusterParam.theCluster->sizeX();
  unsigned int sizey = theClusterParam.theCluster->sizeY();
  if (MYDEBUG) {
    if (int(sizex) != (maxPixelRow - minPixelRow + 1))
      cout << " wrong x" << endl;
    if (int(sizey) != (maxPixelCol - minPixelCol + 1))
      cout << " wrong y" << endl;
  }

  // Find if cluster contains double (big) pixels.
  bool bigInX = theDetParam.theRecTopol->containsBigPixelInX(minPixelRow, maxPixelRow);
  bool bigInY = theDetParam.theRecTopol->containsBigPixelInY(minPixelCol, maxPixelCol);

  if (localPrint) {
    cout << " edge clus " << xerr << " " << yerr << endl;  //dk
    if (bigInX || bigInY)
      cout << " big " << bigInX << " " << bigInY << endl;
    if (edgex || edgey)
      cout << " edge " << edgex << " " << edgey << endl;
    cout << " before if " << UseErrorsFromTemplates_ << " " << theClusterParam.qBin_ << endl;
    if (theClusterParam.qBin_ == 0)
      cout << " qbin 0! " << edgex << " " << edgey << " " << bigInX << " " << bigInY << " " << sizex << " " << sizey
           << endl;
  }

  if
    LIKELY(UseErrorsFromTemplates_) {
      //
      // Use template errors
      //cout << "Track angles are known. We can use either errors from templates or the error parameterization from DB." << endl;

      if (!edgex) {  // Only use this for non-edge clusters
        if (sizex == 1) {
          if (!bigInX) {
            xerr = theClusterParam.sx1;
          } else {
            xerr = theClusterParam.sx2;
          }
        } else {
          xerr = theClusterParam.sigmax;
        }
      }

      if (!edgey) {  // Only use for non-edge clusters
        if (sizey == 1) {
          if (!bigInY) {
            yerr = theClusterParam.sy1;
          } else {
            yerr = theClusterParam.sy2;
          }
        } else {
          yerr = theClusterParam.sigmay;
        }
      }

      if (localPrint) {
        cout << " in if " << edgex << " " << edgey << " " << sizex << " " << sizey << endl;
        cout << " errors  " << xerr << " " << yerr << " " << theClusterParam.sx1 << " " << theClusterParam.sx2 << " "
             << theClusterParam.sigmax << endl;  //dk
      }
    }
  else {  // simple errors

    // This are the simple errors, hardcoded in the code
    //cout << "Track angles are not known " << endl;
    //cout << "Default angle estimation which assumes track from PV (0,0,0) does not work." << endl;

    if (GeomDetEnumerators::isTrackerPixel(theDetParam.thePart)) {
      if (GeomDetEnumerators::isBarrel(theDetParam.thePart)) {
        DetId id = (theDetParam.theDet->geographicalId());
        int layer = ttopo_.layer(id);
        if (layer == 1) {
          if (!edgex) {
            if (sizex <= xerr_barrel_l1_.size())
              xerr = xerr_barrel_l1_[sizex - 1];
            else
              xerr = xerr_barrel_l1_def_;
          }

          if (!edgey) {
            if (sizey <= yerr_barrel_l1_.size())
              yerr = yerr_barrel_l1_[sizey - 1];
            else
              yerr = yerr_barrel_l1_def_;
          }
        } else {  // layer 2,3
          if (!edgex) {
            if (sizex <= xerr_barrel_ln_.size())
              xerr = xerr_barrel_ln_[sizex - 1];
            else
              xerr = xerr_barrel_ln_def_;
          }

          if (!edgey) {
            if (sizey <= yerr_barrel_ln_.size())
              yerr = yerr_barrel_ln_[sizey - 1];
            else
              yerr = yerr_barrel_ln_def_;
          }
        }

      } else {  // EndCap

        if (!edgex) {
          if (sizex <= xerr_endcap_.size())
            xerr = xerr_endcap_[sizex - 1];
          else
            xerr = xerr_endcap_def_;
        }

        if (!edgey) {
          if (sizey <= yerr_endcap_.size())
            yerr = yerr_endcap_[sizey - 1];
          else
            yerr = yerr_endcap_def_;
        }
      }  // end endcap
    }

    if (inflate_errors) {
      int n_bigx = 0;
      int n_bigy = 0;

      for (int irow = 0; irow < 7; ++irow) {
        if (theDetParam.theRecTopol->isItBigPixelInX(irow + minPixelRow))
          ++n_bigx;
      }

      for (int icol = 0; icol < 21; ++icol) {
        if (theDetParam.theRecTopol->isItBigPixelInY(icol + minPixelCol))
          ++n_bigy;
      }

      xerr = (float)(sizex + n_bigx) * theDetParam.thePitchX / std::sqrt(12.0f);
      yerr = (float)(sizey + n_bigy) * theDetParam.thePitchY / std::sqrt(12.0f);

    }  // if(inflate_errors)

  }  // end

#ifdef EDM_ML_DEBUG
  if (!(xerr > 0.0))
    throw cms::Exception("PixelCPEGeneric::localError") << "\nERROR: Negative pixel error xerr = " << xerr << "\n\n";

  if (!(yerr > 0.0))
    throw cms::Exception("PixelCPEGeneric::localError") << "\nERROR: Negative pixel error yerr = " << yerr << "\n\n";
#endif

  //if(localPrint) {
  //cout<<" errors  "<<xerr<<" "<<yerr<<endl;  //dk
  //if(theClusterParam.qBin_ == 0) cout<<" qbin 0 "<<xerr<<" "<<yerr<<endl;
  //}

  auto xerr_sq = xerr * xerr;
  auto yerr_sq = yerr * yerr;

  return LocalError(xerr_sq, 0, yerr_sq);
}

void PixelCPEGeneric::fillPSetDescription(edm::ParameterSetDescription& desc) {
  desc.add<double>("eff_charge_cut_highX", 1.0);
  desc.add<double>("eff_charge_cut_highY", 1.0);
  desc.add<double>("eff_charge_cut_lowX", 0.0);
  desc.add<double>("eff_charge_cut_lowY", 0.0);
  desc.add<double>("size_cutX", 3.0);
  desc.add<double>("size_cutY", 3.0);
  desc.add<double>("EdgeClusterErrorX", 50.0);
  desc.add<double>("EdgeClusterErrorY", 85.0);
  desc.add<bool>("inflate_errors", false);
  desc.add<bool>("inflate_all_errors_no_trk_angle", false);
  desc.add<bool>("UseErrorsFromTemplates", true);
  desc.add<bool>("TruncatePixelCharge", true);
  desc.add<bool>("IrradiationBiasCorrection", false);
  desc.add<bool>("DoCosmics", false);
  desc.add<bool>("Upgrade", false);
  desc.add<bool>("SmallPitch", false);
}