HIPixelMedianVtxProducer Class Reference

#include <HIPixelMedianVtxProducer.h>

Inheritance diagram for HIPixelMedianVtxProducer:

Public Member Functions
	HIPixelMedianVtxProducer (const edm::ParameterSet &ps)
void	produce (edm::Event &ev, const edm::EventSetup &es) override
	~HIPixelMedianVtxProducer () override
Public Member Functions inherited from edm::one::EDProducer<>
	EDProducer ()=default
	EDProducer (const EDProducer &)=delete
SerialTaskQueue *	globalLuminosityBlocksQueue () final
SerialTaskQueue *	globalRunsQueue () final
bool	hasAbilityToProduceInBeginLumis () const final
bool	hasAbilityToProduceInBeginProcessBlocks () const final
bool	hasAbilityToProduceInBeginRuns () const final
bool	hasAbilityToProduceInEndLumis () const final
bool	hasAbilityToProduceInEndProcessBlocks () const final
bool	hasAbilityToProduceInEndRuns () const final
const EDProducer &	operator= (const EDProducer &)=delete
bool	wantsGlobalLuminosityBlocks () const final
bool	wantsGlobalRuns () const final
bool	wantsInputProcessBlocks () const final
bool	wantsProcessBlocks () const final
Public Member Functions inherited from edm::one::EDProducerBase
	EDProducerBase ()
ModuleDescription const &	moduleDescription () const
bool	wantsStreamLuminosityBlocks () const
bool	wantsStreamRuns () const
	~EDProducerBase () override
Public Member Functions inherited from edm::ProducerBase
void	callWhenNewProductsRegistered (std::function< void(BranchDescription const &)> const &func)
std::vector< edm::ProductResolverIndex > const &	indiciesForPutProducts (BranchType iBranchType) const
	ProducerBase ()
std::vector< edm::ProductResolverIndex > const &	putTokenIndexToProductResolverIndex () const
std::vector< bool > const &	recordProvenanceList () const
void	registerProducts (ProducerBase *, ProductRegistry *, ModuleDescription const &)
std::function< void(BranchDescription const &)>	registrationCallback () const
	used by the fwk to register list of products More...
void	resolvePutIndicies (BranchType iBranchType, ModuleToResolverIndicies const &iIndicies, std::string const &moduleLabel)
TypeLabelList const &	typeLabelList () const
	used by the fwk to register the list of products of this module More...
	~ProducerBase () noexcept(false) override
Public Member Functions inherited from edm::EDConsumerBase
std::vector< ConsumesInfo >	consumesInfo () const
void	convertCurrentProcessAlias (std::string const &processName)
	Convert "@currentProcess" in InputTag process names to the actual current process name. More...
	EDConsumerBase ()
	EDConsumerBase (EDConsumerBase &&)=default
	EDConsumerBase (EDConsumerBase const &)=delete
ESProxyIndex const *	esGetTokenIndices (edm::Transition iTrans) const
std::vector< ESProxyIndex > const &	esGetTokenIndicesVector (edm::Transition iTrans) const
std::vector< ESRecordIndex > const &	esGetTokenRecordIndicesVector (edm::Transition iTrans) const
ProductResolverIndexAndSkipBit	indexFrom (EDGetToken, BranchType, TypeID const &) const
void	itemsMayGet (BranchType, std::vector< ProductResolverIndexAndSkipBit > &) const
void	itemsToGet (BranchType, std::vector< ProductResolverIndexAndSkipBit > &) const
std::vector< ProductResolverIndexAndSkipBit > const &	itemsToGetFrom (BranchType iType) const
void	labelsForToken (EDGetToken iToken, Labels &oLabels) const
void	modulesWhoseProductsAreConsumed (std::array< std::vector< ModuleDescription const * > *, NumBranchTypes > &modulesAll, std::vector< ModuleProcessName > &modulesInPreviousProcesses, ProductRegistry const &preg, std::map< std::string, ModuleDescription const * > const &labelsToDesc, std::string const &processName) const
EDConsumerBase &	operator= (EDConsumerBase &&)=default
EDConsumerBase const &	operator= (EDConsumerBase const &)=delete
bool	registeredToConsume (ProductResolverIndex, bool, BranchType) const
bool	registeredToConsumeMany (TypeID const &, BranchType) const
void	selectInputProcessBlocks (ProductRegistry const &productRegistry, ProcessBlockHelperBase const &processBlockHelperBase)
ProductResolverIndexAndSkipBit	uncheckedIndexFrom (EDGetToken) const
void	updateLookup (BranchType iBranchType, ProductResolverIndexHelper const &, bool iPrefetchMayGet)
void	updateLookup (eventsetup::ESRecordsToProxyIndices const &)
virtual	~EDConsumerBase () noexcept(false)

Private Member Functions
void	beginJob () override

Private Attributes
int	theFitBinning
double	theFitMaxZ
int	theFitThreshold
int	thePeakFindBinning
double	thePeakFindMaxZ
unsigned int	thePeakFindThresh
double	thePtMin
edm::EDGetTokenT< reco::TrackCollection >	theTrackCollection

Additional Inherited Members
Public Types inherited from edm::one::EDProducerBase
typedef EDProducerBase	ModuleType
Public Types inherited from edm::ProducerBase
using	ModuleToResolverIndicies = std::unordered_multimap< std::string, std::tuple< edm::TypeID const *, const char *, edm::ProductResolverIndex > >
typedef ProductRegistryHelper::TypeLabelList	TypeLabelList
Public Types inherited from edm::EDConsumerBase
typedef ProductLabels	Labels
Static Public Member Functions inherited from edm::one::EDProducerBase
static const std::string &	baseType ()
static void	fillDescriptions (ConfigurationDescriptions &descriptions)
static void	prevalidate (ConfigurationDescriptions &descriptions)
Protected Member Functions inherited from edm::ProducerBase
template<class ProductType >
BranchAliasSetterT< ProductType >	produces ()
	declare what type of product will make and with which optional label More...
template<typename ProductType , BranchType B>
BranchAliasSetterT< ProductType >	produces ()
template<typename ProductType , Transition B>
BranchAliasSetterT< ProductType >	produces ()
BranchAliasSetter	produces (const TypeID &id, std::string instanceName=std::string(), bool recordProvenance=true)
template<BranchType B>
BranchAliasSetter	produces (const TypeID &id, std::string instanceName=std::string(), bool recordProvenance=true)
template<Transition B>
BranchAliasSetter	produces (const TypeID &id, std::string instanceName=std::string(), bool recordProvenance=true)
template<typename ProductType , Transition B>
BranchAliasSetterT< ProductType >	produces (std::string instanceName)
template<class ProductType >
BranchAliasSetterT< ProductType >	produces (std::string instanceName)
template<typename ProductType , BranchType B>
BranchAliasSetterT< ProductType >	produces (std::string instanceName)
ProducesCollector	producesCollector ()
Protected Member Functions inherited from edm::EDConsumerBase
EDGetToken	consumes (const TypeToGet &id, edm::InputTag const &tag)
template<typename ProductType , BranchType B = InEvent>
EDGetTokenT< ProductType >	consumes (edm::InputTag const &tag)
template<BranchType B = InEvent>
EDConsumerBaseAdaptor< B >	consumes (edm::InputTag tag) noexcept
template<BranchType B>
EDGetToken	consumes (TypeToGet const &id, edm::InputTag const &tag)
ConsumesCollector	consumesCollector ()
	Use a ConsumesCollector to gather consumes information from helper functions. More...
template<typename ProductType , BranchType B = InEvent>
void	consumesMany ()
void	consumesMany (const TypeToGet &id)
template<BranchType B>
void	consumesMany (const TypeToGet &id)
template<typename ESProduct , typename ESRecord , Transition Tr = Transition::Event>
auto	esConsumes ()
template<Transition Tr = Transition::Event>
constexpr auto	esConsumes () noexcept
template<typename ESProduct , typename ESRecord , Transition Tr = Transition::Event>
auto	esConsumes (ESInputTag const &tag)
template<Transition Tr = Transition::Event>
auto	esConsumes (ESInputTag tag) noexcept
template<Transition Tr = Transition::Event>
ESGetTokenGeneric	esConsumes (eventsetup::EventSetupRecordKey const &iRecord, eventsetup::DataKey const &iKey)
	Used with EventSetupRecord::doGet. More...
EDGetToken	mayConsume (const TypeToGet &id, edm::InputTag const &tag)
template<BranchType B>
EDGetToken	mayConsume (const TypeToGet &id, edm::InputTag const &tag)
template<typename ProductType , BranchType B = InEvent>
EDGetTokenT< ProductType >	mayConsume (edm::InputTag const &tag)

Detailed Description

Definition at line 15 of file HIPixelMedianVtxProducer.h.

Constructor & Destructor Documentation

HIPixelMedianVtxProducer()

HIPixelMedianVtxProducer::HIPixelMedianVtxProducer ( const edm::ParameterSet &  ps )

explicit

Definition at line 22 of file HIPixelMedianVtxProducer.cc.

    : theTrackCollection(consumes<reco::TrackCollection>(ps.getParameter<edm::InputTag>("TrackCollection"))),
      thePtMin(ps.getParameter<double>("PtMin")),
      thePeakFindThresh(ps.getParameter<unsigned int>("PeakFindThreshold")),
      thePeakFindMaxZ(ps.getParameter<double>("PeakFindMaxZ")),
      thePeakFindBinning(ps.getParameter<int>("PeakFindBinsPerCm")),
      theFitThreshold(ps.getParameter<int>("FitThreshold")),
      theFitMaxZ(ps.getParameter<double>("FitMaxZ")),
      theFitBinning(ps.getParameter<int>("FitBinsPerCm")) {
  produces<reco::VertexCollection>();
 
  //In order to make fitting ROOT histograms thread safe
  // one must call this undocumented function
  TMinuitMinimizer::UseStaticMinuit(false);
}

~HIPixelMedianVtxProducer()

HIPixelMedianVtxProducer::~HIPixelMedianVtxProducer ( )

inlineoverride

Definition at line 18 of file HIPixelMedianVtxProducer.h.

{};

Member Function Documentation

beginJob()

void HIPixelMedianVtxProducer::beginJob ( void  )

inlineoverrideprivatevirtual

Reimplemented from edm::one::EDProducerBase.

Definition at line 22 of file HIPixelMedianVtxProducer.h.

{};

produce()

void HIPixelMedianVtxProducer::produce ( edm::Event &  ev, const edm::EventSetup &  es  )

overridevirtual

Implements edm::one::EDProducerBase.

Definition at line 39 of file HIPixelMedianVtxProducer.cc.

                                                                            {
  // Get pixel tracks
  edm::Handle<reco::TrackCollection> trackCollection;
  ev.getByToken(theTrackCollection, trackCollection);
  const reco::TrackCollection tracks_ = *(trackCollection.product());
 
  // Select tracks above minimum pt
  std::vector<const reco::Track*> tracks;
  for (unsigned int i = 0; i < tracks_.size(); i++) {
    if (tracks_[i].pt() < thePtMin && std::fabs(tracks_[i].vz()) < 100000.)
      continue;
    reco::TrackRef recTrack(trackCollection, i);
    tracks.push_back(&(*recTrack));
  }
 
  LogTrace("MinBiasTracking") << " [VertexProducer] selected tracks: " << tracks.size() << " (out of " << tracks_.size()
                              << ") above pt = " << thePtMin;
 
  // Output vertex collection
  auto vertices = std::make_unique<reco::VertexCollection>();
 
  // No tracks -> return empty collection
  if (tracks.empty()) {
    ev.put(std::move(vertices));
    return;
  }
 
  // Sort tracks according to vertex z position
  std::sort(tracks.begin(), tracks.end(), ComparePairs());
 
  // Calculate median vz
  float med;
  if (tracks.size() % 2 == 0)
    med = (tracks[tracks.size() / 2 - 1]->vz() + tracks[tracks.size() / 2]->vz()) / 2;
  else
    med = tracks[tracks.size() / 2]->vz();
 
  LogTrace("MinBiasTracking") << "  [vertex position] median    = " << med << " cm";
 
  // In high multiplicity events, fit around most probable position
  if (tracks.size() > thePeakFindThresh) {
    // Find maximum bin
    TH1F hmax("hmax", "hmax", thePeakFindBinning * 2.0 * thePeakFindMaxZ, -1.0 * thePeakFindMaxZ, thePeakFindMaxZ);
 
    for (std::vector<const reco::Track*>::const_iterator track = tracks.begin(); track != tracks.end(); track++)
      if (fabs((*track)->vz()) < thePeakFindMaxZ)
        hmax.Fill((*track)->vz());
 
    int maxBin = hmax.GetMaximumBin();
 
    LogTrace("MinBiasTracking") << "  [vertex position] most prob = " << hmax.GetBinCenter(maxBin) << " cm";
 
    // Find 3-bin weighted average
    float num = 0.0, denom = 0.0;
    for (int i = -1; i <= 1; i++) {
      num += hmax.GetBinContent(maxBin + i) * hmax.GetBinCenter(maxBin + i);
      denom += hmax.GetBinContent(maxBin + i);
    }
 
    if (denom == 0) {
      reco::Vertex::Error err;
      err(2, 2) = 0.1 * 0.1;
      reco::Vertex ver(reco::Vertex::Point(0, 0, 99999.), err, 0, 0, 1);
      vertices->push_back(ver);
      ev.put(std::move(vertices));
      return;
    }
 
    float nBinAvg = num / denom;
 
    // Center fit at 3-bin weighted average around max bin
    med = nBinAvg;
 
    LogTrace("MinBiasTracking") << "  [vertex position] 3-bin weighted average = " << nBinAvg << " cm";
  }
 
  // Bin vz-values around most probable value (or median) for fitting
  TH1F histo("histo", "histo", theFitBinning * 2.0 * theFitMaxZ, -1.0 * theFitMaxZ, theFitMaxZ);
  histo.Sumw2();
 
  for (std::vector<const reco::Track*>::const_iterator track = tracks.begin(); track != tracks.end(); track++)
    if (fabs((*track)->vz() - med) < theFitMaxZ)
      histo.Fill((*track)->vz() - med);
 
  LogTrace("MinBiasTracking") << "  [vertex position] most prob for fit = "
                              << med + histo.GetBinCenter(histo.GetMaximumBin()) << " cm";
 
  // If there are very few entries, don't do the fit
  if (histo.GetEntries() <= theFitThreshold) {
    LogTrace("MinBiasTracking") << "  [vertex position] Fewer than" << theFitThreshold
                                << " entries in fit histogram. Returning median.";
 
    reco::Vertex::Error err;
    err(2, 2) = 0.1 * 0.1;
    reco::Vertex ver(reco::Vertex::Point(0, 0, med), err, 0, 1, 1);
    vertices->push_back(ver);
    ev.put(std::move(vertices));
    return;
  }
 
  // Otherwise, there are enough entries to refine the estimate with a fit
  TF1 f1("f1", "[0]*exp(-0.5 * ((x-[1])/[2])^2) + [3]");
  f1.SetParameters(10., 0., 0.02, 0.002 * tracks.size());
  f1.SetParLimits(1, -0.1, 0.1);
  f1.SetParLimits(2, 0.001, 0.05);
  f1.SetParLimits(3, 0.0, 0.005 * tracks.size());
 
  histo.Fit(&f1, "QN SERIAL");
 
  LogTrace("MinBiasTracking") << "  [vertex position] fitted    = " << med + f1.GetParameter(1) << " +- "
                              << f1.GetParError(1) << " cm";
 
  reco::Vertex::Error err;
  err(2, 2) = f1.GetParError(1) * f1.GetParError(1);
  reco::Vertex ver(reco::Vertex::Point(0, 0, med + f1.GetParameter(1)), err, 0, 1, 1);
  vertices->push_back(ver);
 
  ev.put(std::move(vertices));
  return;
}

References makePileupJSON::denom, submitPVResolutionJobs::err, ev, DeadROC_duringRun::f1, timingPdfMaker::histo, mps_fire::i, LogTrace, cms::cuda::allocator::maxBin, eostools::move(), EgammaValidation_cff::num, DiDispStaMuonMonitor_cfi::pt, jetUpdater_cfi::sort, theFitBinning, theFitMaxZ, theFitThreshold, thePeakFindBinning, thePeakFindMaxZ, thePeakFindThresh, thePtMin, theTrackCollection, HLT_FULL_cff::track, duplicaterechits_cfi::trackCollection, tracks, and AlignmentTracksFromVertexSelector_cfi::vertices.

Member Data Documentation

theFitBinning

int HIPixelMedianVtxProducer::theFitBinning

private

Definition at line 31 of file HIPixelMedianVtxProducer.h.

Referenced by produce().

theFitMaxZ

double HIPixelMedianVtxProducer::theFitMaxZ

private

Definition at line 30 of file HIPixelMedianVtxProducer.h.

Referenced by produce().

theFitThreshold

int HIPixelMedianVtxProducer::theFitThreshold

private

Definition at line 29 of file HIPixelMedianVtxProducer.h.

Referenced by produce().

thePeakFindBinning

int HIPixelMedianVtxProducer::thePeakFindBinning

private

Definition at line 28 of file HIPixelMedianVtxProducer.h.

Referenced by produce().

thePeakFindMaxZ

double HIPixelMedianVtxProducer::thePeakFindMaxZ

private

Definition at line 27 of file HIPixelMedianVtxProducer.h.

Referenced by produce().

thePeakFindThresh

unsigned int HIPixelMedianVtxProducer::thePeakFindThresh

private

Definition at line 26 of file HIPixelMedianVtxProducer.h.

Referenced by produce().

thePtMin

double HIPixelMedianVtxProducer::thePtMin

private

Definition at line 25 of file HIPixelMedianVtxProducer.h.

Referenced by produce().

theTrackCollection

edm::EDGetTokenT<reco::TrackCollection> HIPixelMedianVtxProducer::theTrackCollection

private

Definition at line 22 of file HIPixelMedianVtxProducer.h.

Referenced by produce().