PixelCPEGeneric.cc

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

#include "Geometry/TrackerGeometryBuilder/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;
}

//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
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.exists("Upgrade") && 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.exists("SmallPitch") && 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 );
   
}