CSCRecoConditions.cc

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#include <RecoLocalMuon/CSCRecHitD/src/CSCRecoConditions.h>
#include <CondFormats/CSCObjects/interface/CSCChannelTranslator.h>
#include <FWCore/MessageLogger/interface/MessageLogger.h>
#include <iostream>
 
CSCRecoConditions::CSCRecoConditions(const edm::ParameterSet& ps) : theConditions(ps) {}
 
CSCRecoConditions::~CSCRecoConditions() {}
 
void CSCRecoConditions::initializeEvent(const edm::EventSetup& es) { theConditions.initializeEvent(es); }
 
void CSCRecoConditions::fillBadChannelWords(const CSCDetId& id) { theConditions.fillBadChannelWords(id); }
 
 
float CSCRecoConditions::pedestal(const CSCDetId& id, int geomChannel) const {
  LogTrace("CSCRecoConditions") << id << " geomChannel " << geomChannel << " pedestal "
                                << theConditions.pedestal(id, geomChannel);
  return theConditions.pedestal(id, geomChannel);
}
 
float CSCRecoConditions::pedestalSigma(const CSCDetId& id, int geomChannel) const {
  return theConditions.pedestalSigma(id, geomChannel);
}
 
float CSCRecoConditions::gain(const CSCDetId& id, int geomChannel) const {
  LogTrace("CSCRecoConditions") << id << " geomChannel " << geomChannel << " gain "
                                << theConditions.gain(id, geomChannel);
  return theConditions.gain(id, geomChannel);
}
 
 
float CSCRecoConditions::chipCorrection(const CSCDetId& id, int geomStrip) const {
  // geometric strip to geometric channel (e.g. ME1a, 1-48->1-16 ganged or 1-48 unganged)
  int geomChannel = theConditions.channelFromStrip(id, geomStrip);
  return theConditions.chipCorrection(id, geomChannel);
}
 
//  stripWeights is required in CSCHitFromStripOnly.
// - Has nstrips in arg list because caller already has this value from CSCChamberSpecs.
// - We only have gains per geometric channel of course, and we only apply them by channel too
// (in CSCHitFromStripOnly), but we may as well fill values for each strip.
 
void CSCRecoConditions::stripWeights(const CSCDetId& id, short int nstrips, float* weights) const {
  for (short int i = 1; i < nstrips + 1; ++i) {
    weights[i - 1] = stripWeight(id, i);
  }
}
 
//  Calculate weight as 1/(gain/average gain)
//  Input is offline CSCDetId (e.g. ir=4 for ME1A), and geom strip # (e.g. 1-48 for ME1A)
 
float CSCRecoConditions::stripWeight(const CSCDetId& id, int geomStrip) const {
  int geomChannel = theConditions.channelFromStrip(id, geomStrip);
  float w = averageGain() / gain(id, geomChannel);  // averageGain() from CSCConditions
  // Weights are forced to lie within 0.5 and 1.5
  if (w > 1.5)
    w = 1.5;
  if (w < 0.5)
    w = 0.5;
  LogTrace("CSCRecoConditions") << id << " geomStrip " << geomStrip << " stripWeight " << w;
  return w;
}
 
void CSCRecoConditions::noiseMatrix(const CSCDetId& id, int geomStrip, std::vector<float>& nMatrix) const {
  // nMatrix will be filled with expanded noise matrix elements for strip 'geomStrip' and its immediate neighbours
 
  nMatrix.clear();
 
  // These are ME1/2 constants as fall-back
  const float fakeme12[15] = {8.64, 3.47, 2.45, 8.60, 3.28, 1.88, 8.61, 3.18, 1.99, 7.67, 2.64, 0., 7.71, 0., 0.};
 
  float elem[15];
 
  for (short int i = geomStrip - 1; i < geomStrip + 2; ++i) {
    std::vector<float> me(12);
 
    float w = stripWeight(id, i);
    w = w * w;
    int geomChannel = theConditions.channelFromStrip(id, i);
    theConditions.noiseMatrixElements(id, geomChannel, me);
    for (short int j = 0; j < 11; ++j) {
      elem[j] = me[j] * w;
    }
    elem[11] = 0.;
    elem[12] = me[11] * w;
    elem[13] = 0.;
    elem[14] = 0.;
 
    // Test that elements make sense:
    bool isFlawed = false;
    for (short int k = 0; k < 15; ++k) {
      if (elem[k] < 0.001)
        elem[k] = 0.001;  // fix if too small...
      if (elem[k] > 50.)
        isFlawed = true;  // fail if too big...
    }
 
    if (isFlawed) {
      // These are fake ME1/2:
      for (short int m = 0; m < 15; ++m) {
        elem[m] = fakeme12[m];
      }
    }
 
    for (int k = 0; k < 15; ++k) {
      nMatrix.push_back(elem[k]);
    }
  }
}
 
void CSCRecoConditions::crossTalk(const CSCDetId& id, int geomStrip, std::vector<float>& xtalks) const {
  // xtalks will be filled with crosstalk for geomStrip and its immediate neighbours
 
  xtalks.clear();
 
  for (short int i = geomStrip - 1; i < geomStrip + 2; ++i) {
    int geomChannel = theConditions.channelFromStrip(id, i);
    std::vector<float> ct(4);
    theConditions.crossTalk(id, geomChannel, ct);
    xtalks.push_back(ct[0]);
    xtalks.push_back(ct[1]);
    xtalks.push_back(ct[2]);
    xtalks.push_back(ct[3]);
  }
}
 
bool CSCRecoConditions::nearBadStrip(const CSCDetId& id, int geomStrip, int nstrips) const {
  bool nearBad = (badStrip(id, geomStrip - 1, nstrips) || badStrip(id, geomStrip + 1, nstrips));
  return nearBad;
}
 
bool CSCRecoConditions::badStrip(const CSCDetId& id, int geomStrip, int nstrips) const {
  // input nstrips is no. of strips in the layer (could get this from CSCChamberSpecs or CSCLayerGeometry
  // but then need a CSCLayer*)
 
  bool bad = true;  // if geomStrip out of range, call strip bad
 
  if (id != theConditions.idOfBadChannelWords()) {
    bad = false;  // if bad channel words for this id not filled, call strip good
    return bad;
  }
 
  if (geomStrip > 0 && geomStrip <= nstrips) {
    bad = false;  // default to good
    int geomChan = theConditions.channelFromStrip(id, geomStrip);
    int rawChan = theConditions.rawStripChannel(id, geomChan);
    if (rawChan > 0 && rawChan < 113) {
      const std::bitset<112>& badStrips = theConditions.badStripWord();
      bad = badStrips.test(rawChan - 1);  // 112 bits max, labelled 0-111.
    }
  }
  return bad;
}
 
const std::bitset<112>& CSCRecoConditions::badWireWord(const CSCDetId& id) const { return theConditions.badWireWord(); }
 
float CSCRecoConditions::chamberTimingCorrection(const CSCDetId& id) const {
  return theConditions.chamberTimingCorrection(id);
}
 
float CSCRecoConditions::anodeBXoffset(const CSCDetId& id) const { return theConditions.anodeBXoffset(id); }
 
float CSCRecoConditions::gasGainCorrection(const CSCDetId& id, int geomStrip, int wiregroup) const {
  int geomChannel = theConditions.channelFromStrip(id, geomStrip);
  return theConditions.gasGainCorrection(id, geomChannel, wiregroup);
}