EcalCleaningAlgo Class Reference

#include <EcalCleaningAlgo.h>

Public Member Functions
EcalRecHit::Flags	checkTopology (const DetId &id, const EcalRecHitCollection &rhs)
	EcalCleaningAlgo (const edm::ParameterSet &p)
void	setFlags (EcalRecHitCollection &rhs)

Private Member Functions
float	e4e1 (const DetId &id, const EcalRecHitCollection &rhs)
	yet another function to calculate swiss cross More...
float	e6e2 (const DetId &id, const EcalRecHitCollection &rhs)
bool	isNearCrack (const DetId &detid)
	in EB, check if we are near a crack More...
const std::vector< DetId >	neighbours (const DetId &id)
	return the id of the 4 neighbours in the swiss cross More...
float	recHitE (const DetId id, const EcalRecHitCollection &recHits, bool useTimingInfo)

Private Attributes
float	cThreshold_barrel_
float	cThreshold_double_
float	cThreshold_endcap_
float	e4e1_a_barrel_
float	e4e1_a_endcap_
float	e4e1_b_barrel_
float	e4e1_b_endcap_
float	e4e1Treshold_barrel_
float	e4e1Treshold_endcap_
float	e6e2thresh_
float	ignoreOutOfTimeThresh_
	ignore kOutOfTime above threshold when calculating e4e1 More...
float	tightenCrack_e1_double_
float	tightenCrack_e1_single_
float	tightenCrack_e4e1_single_
float	tightenCrack_e6e2_double_

Detailed Description

Definition at line 19 of file EcalCleaningAlgo.h.

Constructor & Destructor Documentation

EcalCleaningAlgo()

EcalCleaningAlgo::EcalCleaningAlgo

(

const edm::ParameterSet &

p

)

Definition at line 13 of file EcalCleaningAlgo.cc.

References cThreshold_barrel_, cThreshold_double_, cThreshold_endcap_, e4e1_a_barrel_, e4e1_a_endcap_, e4e1_b_barrel_, e4e1_b_endcap_, e4e1Treshold_barrel_, e4e1Treshold_endcap_, e6e2thresh_, ignoreOutOfTimeThresh_, AlCaHLTBitMon_ParallelJobs::p, tightenCrack_e1_double_, tightenCrack_e1_single_, tightenCrack_e4e1_single_, and tightenCrack_e6e2_double_.

                                                           {
  cThreshold_barrel_ = p.getParameter<double>("cThreshold_barrel");
  ;
  cThreshold_endcap_ = p.getParameter<double>("cThreshold_endcap");
  ;
  e4e1_a_barrel_ = p.getParameter<double>("e4e1_a_barrel");
  e4e1_b_barrel_ = p.getParameter<double>("e4e1_b_barrel");
  e4e1_a_endcap_ = p.getParameter<double>("e4e1_a_endcap");
  e4e1_b_endcap_ = p.getParameter<double>("e4e1_b_endcap");
  e4e1Treshold_barrel_ = p.getParameter<double>("e4e1Threshold_barrel");
  e4e1Treshold_endcap_ = p.getParameter<double>("e4e1Threshold_endcap");

  cThreshold_double_ = p.getParameter<double>("cThreshold_double");

  ignoreOutOfTimeThresh_ = p.getParameter<double>("ignoreOutOfTimeThresh");
  tightenCrack_e1_single_ = p.getParameter<double>("tightenCrack_e1_single");
  tightenCrack_e4e1_single_ = p.getParameter<double>("tightenCrack_e4e1_single");
  tightenCrack_e1_double_ = p.getParameter<double>("tightenCrack_e1_double");
  tightenCrack_e6e2_double_ = p.getParameter<double>("tightenCrack_e6e2_double");
  e6e2thresh_ = p.getParameter<double>("e6e2thresh");
}

Member Function Documentation

checkTopology()

EcalRecHit::Flags EcalCleaningAlgo::checkTopology	(	const DetId &	id,
		const EcalRecHitCollection &	rhs
	)

check topology, return : kGood : not anomalous kWeird : spike kDiWeird : dispike

Flag spikey channels

Mark single spikes. Spike definition:

Barrel: e> cThreshold_barrel_ && e4e1 > e4e1_a_barrel_ * log10(e) + e4e1_b_barrel_

Near cracks: energy threshold is multiplied by tightenCrack_e1_single e4e1 threshold is divided by tightenCrack_e4e1_single

Endcap : e> cThreshold_endcap_ && e4e1> e4e1_a_endcap_ * log10(e) + e4e1_b_endcap_

Mark double spikes (barrel only) e> cThreshold_double_ && e6e2 > e6e2thresh_;

Near cracks: energy threshold multiplied by tightenCrack_e1_double
e6e2 threshold divided by tightenCrack_e6e2_double

Out of time hits above e4e1_IgnoreOutOfTimeThresh_ are ignored in topological quantities

Definition at line 62 of file EcalCleaningAlgo.cc.

References a, b, cThreshold_barrel_, cThreshold_double_, cThreshold_endcap_, e4e1(), e4e1_a_barrel_, e4e1_a_endcap_, e4e1_b_barrel_, e4e1_b_endcap_, e6e2(), HLT_2022v15_cff::e6e2thresh, e6e2thresh_, EcalBarrel, EcalEndcap, HCALHighEnergyHPDFilter_cfi::energy, hybridSuperClusters_cfi::ethresh, isNearCrack(), EcalRecHit::kDiWeird, EcalRecHit::kGood, EcalRecHit::kWeird, recHitE(), tightenCrack_e1_double_, tightenCrack_e1_single_, tightenCrack_e4e1_single_, and tightenCrack_e6e2_double_.

Referenced by setFlags().

                                                                                                {
  float a = 0, b = 0, e4e1thresh = 0, ethresh = 0;

  if (id.subdetId() == EcalBarrel) {
    a = e4e1_a_barrel_;
    b = e4e1_b_barrel_;
    ethresh = cThreshold_barrel_;

  } else if (id.subdetId() == EcalEndcap) {
    a = e4e1_a_endcap_;
    b = e4e1_b_endcap_;
    ethresh = cThreshold_endcap_;
  }

  // for energies below threshold, we don't apply e4e1 cut
  float energy = recHitE(id, rhs, false);

  if (energy < ethresh)
    return EcalRecHit::kGood;
  if (isNearCrack(id) && energy < ethresh * tightenCrack_e1_single_)
    return EcalRecHit::kGood;

  float e4e1value = e4e1(id, rhs);
  e4e1thresh = a * log10(energy) + b;

  // near cracks the cut is tighter by a factor
  if (isNearCrack(id)) {
    e4e1thresh /= tightenCrack_e4e1_single_;
  }

  // identify spike
  if (e4e1value < e4e1thresh)
    return EcalRecHit::kWeird;

  // now for double spikes

  // no checking for double spikes in EE
  if (id.subdetId() == EcalEndcap)
    return EcalRecHit::kGood;

  float e6e2value = e6e2(id, rhs);
  float e6e2thresh = e6e2thresh_;
  if (isNearCrack(id) && energy < cThreshold_double_ * tightenCrack_e1_double_)
    return EcalRecHit::kGood;

  if (energy < cThreshold_double_)
    return EcalRecHit::kGood;

  // near cracks the cut is tighter by a factor
  if (id.subdetId() == EcalBarrel && isNearCrack(id))
    e6e2thresh /= tightenCrack_e6e2_double_;

  // identify double spike
  if (e6e2value < e6e2thresh)
    return EcalRecHit::kDiWeird;

  return EcalRecHit::kGood;
}

e4e1()

float EcalCleaningAlgo::e4e1 ( const DetId &  id, const EcalRecHitCollection &  rhs  )

private

yet another function to calculate swiss cross

Definition at line 121 of file EcalCleaningAlgo.cc.

References StorageManager_cfg::e1, mps_fire::i, neighbours(), recHitE(), and photons_cff::s4.

Referenced by checkTopology(), and e6e2().

                                                                             {
  float s4 = 0;
  float e1 = recHitE(id, rhs, false);

  if (e1 == 0)
    return 0;
  const std::vector<DetId>& neighs = neighbours(id);
  for (size_t i = 0; i < neighs.size(); ++i)
    // avoid hits out of time when making s4
    s4 += recHitE(neighs[i], rhs, true);

  return s4 / e1;
}

e6e2()

float EcalCleaningAlgo::e6e2 ( const DetId &  id, const EcalRecHitCollection &  rhs  )

private

Compute e6 over e2 around xtal 1, where 2 is the most energetic in the swiss cross around 1

  | | |   
+-+-+-+-+
| |1|2| |
+-+-+-+-+
  | | |                

Definition at line 135 of file EcalCleaningAlgo.cc.

References StorageManager_cfg::e1, e4e1(), mps_fire::i, neighbours(), and recHitE().

Referenced by checkTopology().

                                                                             {
  float s4_1 = 0;
  float s4_2 = 0;
  float e1 = recHitE(id, rhs, false);

  float maxene = 0;
  DetId maxid;

  if (e1 == 0)
    return 0;

  const std::vector<DetId>& neighs = neighbours(id);

  // find the most energetic neighbour ignoring time info
  for (size_t i = 0; i < neighs.size(); ++i) {
    float ene = recHitE(neighs[i], rhs, false);
    if (ene > maxene) {
      maxene = ene;
      maxid = neighs[i];
    }
  }

  float e2 = maxene;

  s4_1 = e4e1(id, rhs) * e1;
  s4_2 = e4e1(maxid, rhs) * e2;

  return (s4_1 + s4_2) / (e1 + e2) - 1.;
}

isNearCrack()

bool EcalCleaningAlgo::isNearCrack ( const DetId &  detid )

private

in EB, check if we are near a crack

Definition at line 214 of file EcalCleaningAlgo.cc.

References EcalEndcap, EBDetId::isNextToBoundary(), and EEDetId::isNextToRingBoundary().

Referenced by checkTopology().

                                                  {
  if (id.subdetId() == EcalEndcap) {
    return EEDetId::isNextToRingBoundary(id);
  } else {
    return EBDetId::isNextToBoundary(id);
  }
}

neighbours()

const std::vector< DetId > EcalCleaningAlgo::neighbours ( const DetId &  id )

private

return the id of the 4 neighbours in the swiss cross

four neighbours in the swiss cross around id

Definition at line 194 of file EcalCleaningAlgo.cc.

References EcalBarrel, EcalEndcap, EBDetId::offsetBy(), EEDetId::offsetBy(), and runTheMatrix::ret.

Referenced by e4e1(), and e6e2().

                                                                   {
  std::vector<DetId> ret;

  if (id.subdetId() == EcalBarrel) {
    ret.push_back(EBDetId::offsetBy(id, 1, 0));
    ret.push_back(EBDetId::offsetBy(id, -1, 0));
    ret.push_back(EBDetId::offsetBy(id, 0, 1));
    ret.push_back(EBDetId::offsetBy(id, 0, -1));
  }
  // nobody understands what polymorphism is for, sgrunt !
  else if (id.subdetId() == EcalEndcap) {
    ret.push_back(EEDetId::offsetBy(id, 1, 0));
    ret.push_back(EEDetId::offsetBy(id, -1, 0));
    ret.push_back(EEDetId::offsetBy(id, 0, 1));
    ret.push_back(EEDetId::offsetBy(id, 0, -1));
  }

  return ret;
}

recHitE()

float EcalCleaningAlgo::recHitE ( const DetId  id, const EcalRecHitCollection &  recHits, bool  useTimingInfo  )

private

Definition at line 165 of file EcalCleaningAlgo.cc.

References e4e1Treshold_barrel_, e4e1Treshold_endcap_, EcalBarrel, EcalEndcap, ignoreOutOfTimeThresh_, EcalRecHit::kOutOfTime, FastTrackerRecHitMaskProducer_cfi::recHits, and remoteMonitoring_LASER_era2018_cfg::threshold.

Referenced by checkTopology(), e4e1(), and e6e2().

                                                                                                       {
  if (id.rawId() == 0)
    return 0;

  float threshold = e4e1Treshold_barrel_;
  if (id.subdetId() == EcalEndcap)
    threshold = e4e1Treshold_endcap_;

  EcalRecHitCollection::const_iterator it = recHits.find(id);
  if (it != recHits.end()) {
    float ene = (*it).energy();

    // ignore out of time in EB when making e4e1 if so configured
    if (useTimingInfo) {
      if (id.subdetId() == EcalBarrel && it->checkFlag(EcalRecHit::kOutOfTime) && ene > ignoreOutOfTimeThresh_)
        return 0;
    }

    // ignore hits below threshold
    if (ene < threshold)
      return 0;

    // else return the energy of this hit
    return ene;
  }
  return 0;
}

setFlags()

void EcalCleaningAlgo::setFlags

(

EcalRecHitCollection &

rhs

)

Definition at line 222 of file EcalCleaningAlgo.cc.

References edm::SortedCollection< T, SORT >::begin(), checkTopology(), edm::SortedCollection< T, SORT >::end(), and EcalRecHit::kGood.

                                                         {
  EcalRecHitCollection::iterator rh;
  //changing the collection on place
  for (rh = rhs.begin(); rh != rhs.end(); ++rh) {
    EcalRecHit::Flags state = checkTopology(rh->id(), rhs);
    if (state != EcalRecHit::kGood) {
      rh->unsetFlag(EcalRecHit::kGood);
      rh->setFlag(state);
    }
  }
}

Member Data Documentation

cThreshold_barrel_

float EcalCleaningAlgo::cThreshold_barrel_

private

Definition at line 58 of file EcalCleaningAlgo.h.

Referenced by checkTopology(), and EcalCleaningAlgo().

cThreshold_double_

float EcalCleaningAlgo::cThreshold_double_

private

Definition at line 69 of file EcalCleaningAlgo.h.

Referenced by checkTopology(), and EcalCleaningAlgo().

cThreshold_endcap_

float EcalCleaningAlgo::cThreshold_endcap_

private

Definition at line 59 of file EcalCleaningAlgo.h.

Referenced by checkTopology(), and EcalCleaningAlgo().

e4e1_a_barrel_

float EcalCleaningAlgo::e4e1_a_barrel_

private

Definition at line 60 of file EcalCleaningAlgo.h.

Referenced by checkTopology(), and EcalCleaningAlgo().

e4e1_a_endcap_

float EcalCleaningAlgo::e4e1_a_endcap_

private

Definition at line 62 of file EcalCleaningAlgo.h.

Referenced by checkTopology(), and EcalCleaningAlgo().

e4e1_b_barrel_

float EcalCleaningAlgo::e4e1_b_barrel_

private

Definition at line 61 of file EcalCleaningAlgo.h.

Referenced by checkTopology(), and EcalCleaningAlgo().

e4e1_b_endcap_

float EcalCleaningAlgo::e4e1_b_endcap_

private

Definition at line 63 of file EcalCleaningAlgo.h.

Referenced by checkTopology(), and EcalCleaningAlgo().

e4e1Treshold_barrel_

float EcalCleaningAlgo::e4e1Treshold_barrel_

private

Definition at line 65 of file EcalCleaningAlgo.h.

Referenced by EcalCleaningAlgo(), and recHitE().

e4e1Treshold_endcap_

float EcalCleaningAlgo::e4e1Treshold_endcap_

private

Definition at line 66 of file EcalCleaningAlgo.h.

Referenced by EcalCleaningAlgo(), and recHitE().

e6e2thresh_

float EcalCleaningAlgo::e6e2thresh_

private

Definition at line 72 of file EcalCleaningAlgo.h.

Referenced by checkTopology(), and EcalCleaningAlgo().

ignoreOutOfTimeThresh_

float EcalCleaningAlgo::ignoreOutOfTimeThresh_

private

ignore kOutOfTime above threshold when calculating e4e1

Definition at line 54 of file EcalCleaningAlgo.h.

Referenced by EcalCleaningAlgo(), and recHitE().

tightenCrack_e1_double_

float EcalCleaningAlgo::tightenCrack_e1_double_

private

Definition at line 70 of file EcalCleaningAlgo.h.

Referenced by checkTopology(), and EcalCleaningAlgo().

tightenCrack_e1_single_

float EcalCleaningAlgo::tightenCrack_e1_single_

private

Definition at line 67 of file EcalCleaningAlgo.h.

Referenced by checkTopology(), and EcalCleaningAlgo().

tightenCrack_e4e1_single_

float EcalCleaningAlgo::tightenCrack_e4e1_single_

private

Definition at line 68 of file EcalCleaningAlgo.h.

Referenced by checkTopology(), and EcalCleaningAlgo().

tightenCrack_e6e2_double_

float EcalCleaningAlgo::tightenCrack_e6e2_double_

private

Definition at line 71 of file EcalCleaningAlgo.h.

Referenced by checkTopology(), and EcalCleaningAlgo().