VertexMonitor.cc

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/*
 *  See header file for a description of this class.
 *
 *  \author:  Mia Tosi,40 3-B32,+41227671609 
 */

#include "FWCore/MessageLogger/interface/MessageLogger.h"
#include "FWCore/Utilities/interface/InputTag.h"
#include "DQMServices/Core/interface/DQMStore.h"

#include "DQM/TrackingMonitor/interface/VertexMonitor.h"

#include "DQM/TrackingMonitor/interface/GetLumi.h"

#include "TMath.h"

VertexMonitor::VertexMonitor(const edm::ParameterSet& iConfig,
                             const edm::InputTag& primaryVertexInputTag,
                             const edm::InputTag& selectedPrimaryVertexInputTag,
                             std::string pvLabel)
    : conf_(iConfig),
      primaryVertexInputTag_(primaryVertexInputTag),
      selectedPrimaryVertexInputTag_(selectedPrimaryVertexInputTag),
      label_(pvLabel),
      NumberOfPVtx(nullptr),
      NumberOfPVtxVsBXlumi(nullptr),
      NumberOfPVtxVsGoodPVtx(nullptr),
      NumberOfGoodPVtx(nullptr),
      NumberOfGoodPVtxVsBXlumi(nullptr),
      FractionOfGoodPVtx(nullptr),
      FractionOfGoodPVtxVsBXlumi(nullptr),
      FractionOfGoodPVtxVsGoodPVtx(nullptr),
      FractionOfGoodPVtxVsPVtx(nullptr),
      NumberOfBADndofPVtx(nullptr),
      NumberOfBADndofPVtxVsBXlumi(nullptr),
      NumberOfBADndofPVtxVsGoodPVtx(nullptr),
      GoodPVtxSumPt(nullptr),
      GoodPVtxSumPtVsBXlumi(nullptr),
      GoodPVtxSumPtVsGoodPVtx(nullptr),
      GoodPVtxNumberOfTracks(nullptr),
      GoodPVtxNumberOfTracksVsBXlumi(nullptr),
      GoodPVtxNumberOfTracksVsGoodPVtx(nullptr),
      GoodPVtxNumberOfTracksVsGoodPVtxNdof(nullptr),
      GoodPVtxChi2oNDFVsGoodPVtx(nullptr),
      GoodPVtxChi2oNDFVsBXlumi(nullptr),
      GoodPVtxChi2ProbVsGoodPVtx(nullptr),
      GoodPVtxChi2ProbVsBXlumi(nullptr),
      doAllPlots_(conf_.getParameter<bool>("doAllPlots")),
      doPlotsVsBXlumi_(conf_.getParameter<bool>("doPlotsVsBXlumi")),
      doPlotsVsGoodPVtx_(conf_.getParameter<bool>("doPlotsVsGoodPVtx"))

{
  //now do what ever initialization is needed
  if (doPlotsVsBXlumi_)
    lumiDetails_ = new GetLumi(iConfig.getParameter<edm::ParameterSet>("BXlumiSetup"));
}

VertexMonitor::VertexMonitor(const edm::ParameterSet& iConfig,
                             const edm::InputTag& primaryVertexInputTag,
                             const edm::InputTag& selectedPrimaryVertexInputTag,
                             std::string pvLabel,
                             edm::ConsumesCollector& iC)
    : VertexMonitor(iConfig, primaryVertexInputTag, selectedPrimaryVertexInputTag, pvLabel) {
  if (doPlotsVsBXlumi_)
    lumiDetails_ = new GetLumi(iConfig.getParameter<edm::ParameterSet>("BXlumiSetup"), iC);

  pvToken_ = iC.consumes<reco::VertexCollection>(primaryVertexInputTag_);
  selpvToken_ = iC.consumes<reco::VertexCollection>(selectedPrimaryVertexInputTag_);
}

VertexMonitor::~VertexMonitor() {
  // do anything here that needs to be done at desctruction time
  // (e.g. close files, deallocate resources etc.)
  //  if (lumiDetails_) delete lumiDetails_;
}

//
// member functions
//

// -- Analyse
// ------------ method called for each event  ------------
// ------------------------------------------------------- //
void VertexMonitor::analyze(const edm::Event& iEvent, const edm::EventSetup& iSetup) {
  double bxlumi = 0.;
  if (doPlotsVsBXlumi_)
    bxlumi = lumiDetails_->getValue(iEvent);
  //  std::cout << "bxlumi : " << bxlumi << std::endl;

  size_t totalNumPV = 0;
  size_t totalNumBADndofPV = 0;
  edm::Handle<reco::VertexCollection> pvHandle = iEvent.getHandle(pvToken_);
  if (pvHandle.isValid()) {
    totalNumPV = pvHandle->size();
    //      std::cout << "totalNumPV : " << totalNumPV << std::endl;
    for (reco::VertexCollection::const_iterator pv = pvHandle->begin(); pv != pvHandle->end(); ++pv) {
      //--- count pv w/ ndof < 4
      if (pv->ndof() < 4.)
        totalNumBADndofPV++;
    }
  } else
    return;
  NumberOfPVtx->Fill(totalNumPV);
  NumberOfBADndofPVtx->Fill(totalNumBADndofPV);
  if (doPlotsVsBXlumi_) {
    NumberOfPVtxVsBXlumi->Fill(bxlumi, totalNumPV);
    NumberOfBADndofPVtxVsBXlumi->Fill(bxlumi, totalNumBADndofPV);
  }

  size_t totalNumGoodPV = 0;
  edm::Handle<reco::VertexCollection> selpvHandle = iEvent.getHandle(selpvToken_);
  if (selpvHandle.isValid())
    totalNumGoodPV = selpvHandle->size();
  else
    return;
  //  std::cout << "totalNumGoodPV: " << totalNumGoodPV << std::endl;
  if (doPlotsVsGoodPVtx_) {
    NumberOfPVtxVsGoodPVtx->Fill(totalNumGoodPV, totalNumPV);
    NumberOfBADndofPVtxVsGoodPVtx->Fill(totalNumGoodPV, totalNumBADndofPV);
  }

  double fracGoodPV = double(totalNumGoodPV) / double(totalNumPV);
  //  std::cout << "fracGoodPV: " << fracGoodPV << std::endl;

  NumberOfGoodPVtx->Fill(totalNumGoodPV);
  FractionOfGoodPVtx->Fill(fracGoodPV);
  if (doPlotsVsBXlumi_) {
    NumberOfGoodPVtxVsBXlumi->Fill(bxlumi, totalNumGoodPV);
    FractionOfGoodPVtxVsBXlumi->Fill(bxlumi, fracGoodPV);
  }
  if (doPlotsVsGoodPVtx_) {
    FractionOfGoodPVtxVsGoodPVtx->Fill(totalNumGoodPV, fracGoodPV);
    FractionOfGoodPVtxVsPVtx->Fill(totalNumPV, fracGoodPV);
  }

  if (!selpvHandle->empty()) {
    double sumpt = 0;
    size_t ntracks = 0;
    double chi2ndf = 0.;
    double chi2prob = 0.;

    if (!selpvHandle->at(0).isFake()) {
      reco::Vertex pv = selpvHandle->at(0);

      ntracks = pv.tracksSize();
      chi2ndf = pv.normalizedChi2();
      chi2prob = TMath::Prob(pv.chi2(), (int)pv.ndof());

      for (reco::Vertex::trackRef_iterator itrk = pv.tracks_begin(); itrk != pv.tracks_end(); ++itrk) {
        double pt = (**itrk).pt();
        sumpt += pt * pt;
      }
      GoodPVtxSumPt->Fill(sumpt);
      GoodPVtxNumberOfTracks->Fill(ntracks);

      if (doPlotsVsBXlumi_) {
        GoodPVtxSumPtVsBXlumi->Fill(bxlumi, sumpt);
        GoodPVtxNumberOfTracksVsBXlumi->Fill(bxlumi, ntracks);
        GoodPVtxChi2oNDFVsBXlumi->Fill(bxlumi, chi2ndf);
        GoodPVtxChi2ProbVsBXlumi->Fill(bxlumi, chi2prob);
      }
      if (doPlotsVsGoodPVtx_) {
        GoodPVtxSumPtVsGoodPVtx->Fill(totalNumGoodPV, sumpt);
        GoodPVtxNumberOfTracksVsGoodPVtx->Fill(totalNumGoodPV, ntracks);
        GoodPVtxChi2oNDFVsGoodPVtx->Fill(totalNumGoodPV, chi2ndf);
        GoodPVtxChi2ProbVsGoodPVtx->Fill(totalNumGoodPV, chi2prob);
      }
    }
  }
}

// ------------ method called once each job just before starting event loop  ------------
void VertexMonitor::initHisto(DQMStore::IBooker& ibooker) {
  // parameters from the configuration
  std::string MEFolderName = conf_.getParameter<std::string>("PVFolderName");

  // get binning from the configuration
  edm::ParameterSet ParametersGoodPVtx = conf_.getParameter<edm::ParameterSet>("GoodPVtx");
  int GoodPVtxBin = ParametersGoodPVtx.getParameter<int>("GoodPVtxBin");
  double GoodPVtxMin = ParametersGoodPVtx.getParameter<double>("GoodPVtxMin");
  double GoodPVtxMax = ParametersGoodPVtx.getParameter<double>("GoodPVtxMax");

  edm::ParameterSet ParametersNTrkPVtx = conf_.getParameter<edm::ParameterSet>("NTrkPVtx");
  int NTrkPVtxBin = ParametersNTrkPVtx.getParameter<int>("NTrkPVtxBin");
  double NTrkPVtxMin = ParametersNTrkPVtx.getParameter<double>("NTrkPVtxMin");
  double NTrkPVtxMax = ParametersNTrkPVtx.getParameter<double>("NTrkPVtxMax");

  edm::ParameterSet ParametersSumPtPVtx = conf_.getParameter<edm::ParameterSet>("SumPtPVtx");
  int SumPtPVtxBin = ParametersSumPtPVtx.getParameter<int>("SumPtPVtxBin");
  double SumPtPVtxMin = ParametersSumPtPVtx.getParameter<double>("SumPtPVtxMin");
  double SumPtPVtxMax = ParametersSumPtPVtx.getParameter<double>("SumPtPVtxMax");

  // book histo
  // ----------------------//
  ibooker.setCurrentFolder(MEFolderName + "/" + label_);

  histname = "NumberOfPVtx_" + label_;
  NumberOfPVtx = ibooker.book1D(histname, histname, GoodPVtxBin, GoodPVtxMin, GoodPVtxMax);
  NumberOfPVtx->setAxisTitle("Number of PV", 1);
  NumberOfPVtx->setAxisTitle("Number of Events", 2);

  histname = "NumberOfGoodPVtx_" + label_;
  NumberOfGoodPVtx = ibooker.book1D(histname, histname, GoodPVtxBin, GoodPVtxMin, GoodPVtxMax);
  NumberOfGoodPVtx->setAxisTitle("Number of Good PV", 1);
  NumberOfGoodPVtx->setAxisTitle("Number of Events", 2);

  histname = "FractionOfGoodPVtx_" + label_;
  FractionOfGoodPVtx = ibooker.book1D(histname, histname, 100, 0., 1.);
  FractionOfGoodPVtx->setAxisTitle("fraction of Good PV", 1);
  FractionOfGoodPVtx->setAxisTitle("Number of Events", 2);

  histname = "NumberOfBADndofPVtx_" + label_;
  NumberOfBADndofPVtx = ibooker.book1D(histname, histname, GoodPVtxBin, GoodPVtxMin, GoodPVtxMax);
  NumberOfBADndofPVtx->setAxisTitle("Number of BADndof #PV", 1);
  NumberOfBADndofPVtx->setAxisTitle("Number of Events", 2);

  histname = "GoodPVtxSumPt_" + label_;
  GoodPVtxSumPt = ibooker.book1D(histname, histname, SumPtPVtxBin, SumPtPVtxMin, SumPtPVtxMax);
  GoodPVtxSumPt->setAxisTitle("primary vertex #Sum p_{T}^{2} [GeV^{2}/c^{2}]", 1);
  GoodPVtxSumPt->setAxisTitle("Number of events", 2);

  histname = "GoodPVtxNumberOfTracks_" + label_;
  GoodPVtxNumberOfTracks = ibooker.book1D(histname, histname, NTrkPVtxBin, NTrkPVtxMin, NTrkPVtxMax);
  GoodPVtxNumberOfTracks->setAxisTitle("primary vertex number of tracks", 1);
  GoodPVtxNumberOfTracks->setAxisTitle("Number of events", 2);

  if (doPlotsVsBXlumi_) {
    // get binning from the configuration
    edm::ParameterSet BXlumiParameters = conf_.getParameter<edm::ParameterSet>("BXlumiSetup");
    int BXlumiBin = BXlumiParameters.getParameter<int>("BXlumiBin");
    double BXlumiMin = BXlumiParameters.getParameter<double>("BXlumiMin");
    double BXlumiMax = BXlumiParameters.getParameter<double>("BXlumiMax");

    ibooker.setCurrentFolder(MEFolderName + "/" + label_ + "/PUmonitoring/");

    histname = "NumberOfPVtxVsBXlumi_" + label_;
    NumberOfPVtxVsBXlumi =
        ibooker.bookProfile(histname, histname, BXlumiBin, BXlumiMin, BXlumiMax, GoodPVtxMin, GoodPVtxMax * 3, "");
    NumberOfPVtxVsBXlumi->getTH1()->SetCanExtend(TH1::kAllAxes);
    NumberOfPVtxVsBXlumi->setAxisTitle("lumi BX [10^{30}Hzcm^{-2}]", 1);
    NumberOfPVtxVsBXlumi->setAxisTitle("Mean number of PV", 2);

    histname = "NumberOfGoodPVtxVsBXlumi_" + label_;
    NumberOfGoodPVtxVsBXlumi =
        ibooker.bookProfile(histname, histname, BXlumiBin, BXlumiMin, BXlumiMax, GoodPVtxMin, GoodPVtxMax * 3, "");
    NumberOfGoodPVtxVsBXlumi->getTH1()->SetCanExtend(TH1::kAllAxes);
    NumberOfGoodPVtxVsBXlumi->setAxisTitle("lumi BX [10^{30}Hzcm^{-2}]", 1);
    NumberOfGoodPVtxVsBXlumi->setAxisTitle("Mean number of PV", 2);

    histname = "FractionOfGoodPVtxVsBXlumi_" + label_;
    FractionOfGoodPVtxVsBXlumi = ibooker.bookProfile(histname, histname, BXlumiBin, BXlumiMin, BXlumiMax, 0., 1.5, "");
    FractionOfGoodPVtxVsBXlumi->getTH1()->SetCanExtend(TH1::kAllAxes);
    FractionOfGoodPVtxVsBXlumi->setAxisTitle("lumi BX [10^{30}Hzcm^{-2}]", 1);
    FractionOfGoodPVtxVsBXlumi->setAxisTitle("Mean number of PV", 2);

    histname = "NumberOfBADndofPVtxVsBXlumi_" + label_;
    NumberOfBADndofPVtxVsBXlumi =
        ibooker.bookProfile(histname, histname, BXlumiBin, BXlumiMin, BXlumiMax, GoodPVtxMin, GoodPVtxMax * 3, "");
    NumberOfBADndofPVtxVsBXlumi->getTH1()->SetCanExtend(TH1::kAllAxes);
    NumberOfBADndofPVtxVsBXlumi->setAxisTitle("BADndof #PV", 1);
    NumberOfBADndofPVtxVsBXlumi->setAxisTitle("Number of Events", 2);

    histname = "GoodPVtxSumPtVsBXlumi_" + label_;
    GoodPVtxSumPtVsBXlumi =
        ibooker.bookProfile(histname, histname, BXlumiBin, BXlumiMin, BXlumiMax, SumPtPVtxMin, SumPtPVtxMax * 3, "");
    GoodPVtxSumPtVsBXlumi->getTH1()->SetCanExtend(TH1::kAllAxes);
    GoodPVtxSumPtVsBXlumi->setAxisTitle("lumi BX [10^{30}Hzcm^{-2}]", 1);
    GoodPVtxSumPtVsBXlumi->setAxisTitle("Mean pv #Sum p_{T}^{2} [GeV^{2}/c]^{2}", 2);

    histname = "GoodPVtxNumberOfTracksVsBXlumi_" + label_;
    GoodPVtxNumberOfTracksVsBXlumi =
        ibooker.bookProfile(histname, histname, BXlumiBin, BXlumiMin, BXlumiMax, NTrkPVtxMin, NTrkPVtxMax * 3, "");
    GoodPVtxNumberOfTracksVsBXlumi->getTH1()->SetCanExtend(TH1::kAllAxes);
    GoodPVtxNumberOfTracksVsBXlumi->setAxisTitle("lumi BX [10^{30}Hzcm^{-2}]", 1);
    GoodPVtxNumberOfTracksVsBXlumi->setAxisTitle("Mean pv number of tracks", 2);

    // get binning from the configuration
    double Chi2NDFMin = conf_.getParameter<double>("Chi2NDFMin");
    double Chi2NDFMax = conf_.getParameter<double>("Chi2NDFMax");

    double Chi2ProbMin = conf_.getParameter<double>("Chi2ProbMin");
    double Chi2ProbMax = conf_.getParameter<double>("Chi2ProbMax");

    histname = "Chi2oNDFVsBXlumi_" + label_;
    Chi2oNDFVsBXlumi =
        ibooker.bookProfile(histname, histname, BXlumiBin, BXlumiMin, BXlumiMax, Chi2NDFMin, Chi2NDFMax * 3, "");
    Chi2oNDFVsBXlumi->getTH1()->SetCanExtend(TH1::kAllAxes);
    Chi2oNDFVsBXlumi->setAxisTitle("lumi BX [10^{30}Hzcm^{-2}]", 1);
    Chi2oNDFVsBXlumi->setAxisTitle("Mean #chi^{2}/ndof", 2);

    histname = "Chi2ProbVsBXlumi_" + label_;
    Chi2ProbVsBXlumi =
        ibooker.bookProfile(histname, histname, BXlumiBin, BXlumiMin, BXlumiMax, Chi2ProbMin, Chi2ProbMax * 3, "");
    Chi2ProbVsBXlumi->getTH1()->SetCanExtend(TH1::kAllAxes);
    Chi2ProbVsBXlumi->setAxisTitle("lumi BX [10^{30}Hzcm^{-2}]", 1);
    Chi2ProbVsBXlumi->setAxisTitle("Mean #chi^{2}/prob", 2);

    histname = "GoodPVtxChi2oNDFVsBXlumi_" + label_;
    GoodPVtxChi2oNDFVsBXlumi =
        ibooker.bookProfile(histname, histname, BXlumiBin, BXlumiMin, BXlumiMax, Chi2NDFMin, Chi2NDFMax, "");
    GoodPVtxChi2oNDFVsBXlumi->getTH1()->SetCanExtend(TH1::kAllAxes);
    GoodPVtxChi2oNDFVsBXlumi->setAxisTitle("lumi BX [10^{30}Hzcm^{-2}]", 1);
    GoodPVtxChi2oNDFVsBXlumi->setAxisTitle("Mean PV #chi^{2}/ndof", 2);

    histname = "GoodPVtxChi2ProbVsBXlumi_" + label_;
    GoodPVtxChi2ProbVsBXlumi =
        ibooker.bookProfile(histname, histname, BXlumiBin, BXlumiMin, BXlumiMax, Chi2ProbMin, Chi2ProbMax * 3, "");
    GoodPVtxChi2ProbVsBXlumi->getTH1()->SetCanExtend(TH1::kAllAxes);
    GoodPVtxChi2ProbVsBXlumi->setAxisTitle("lumi BX [10^{30}Hzcm^{-2}]", 1);
    GoodPVtxChi2ProbVsBXlumi->setAxisTitle("Mean PV #chi^{2}/prob", 2);
  }

  if (doPlotsVsGoodPVtx_) {
    ibooker.setCurrentFolder(MEFolderName + "/" + label_ + "/PUmonitoring/VsGoodPVtx");

    histname = "NumberOfPVtxVsGoodPVtx_" + label_;
    NumberOfPVtxVsGoodPVtx = ibooker.bookProfile(
        histname, histname, GoodPVtxBin, GoodPVtxMin, GoodPVtxMax, GoodPVtxMin, GoodPVtxMax * 3, "");
    NumberOfPVtxVsGoodPVtx->getTH1()->SetCanExtend(TH1::kAllAxes);
    NumberOfPVtxVsGoodPVtx->setAxisTitle("Number of Good PV", 1);
    NumberOfPVtxVsGoodPVtx->setAxisTitle("Mean number of PV", 2);

    histname = "FractionOfGoodPVtxVsGoodPVtx_" + label_;
    FractionOfGoodPVtxVsGoodPVtx = ibooker.bookProfile(
        histname, histname, GoodPVtxBin, GoodPVtxMin, GoodPVtxMax, GoodPVtxMin, GoodPVtxMax * 3, "");
    FractionOfGoodPVtxVsGoodPVtx->getTH1()->SetCanExtend(TH1::kAllAxes);
    FractionOfGoodPVtxVsGoodPVtx->setAxisTitle("Number of Good PV", 1);
    FractionOfGoodPVtxVsGoodPVtx->setAxisTitle("Mean fraction of Good PV", 2);

    histname = "FractionOfGoodPVtxVsPVtx_" + label_;
    FractionOfGoodPVtxVsPVtx = ibooker.bookProfile(
        histname, histname, GoodPVtxBin, GoodPVtxMin, GoodPVtxMax, GoodPVtxMin, GoodPVtxMax * 3, "");
    FractionOfGoodPVtxVsPVtx->getTH1()->SetCanExtend(TH1::kAllAxes);
    FractionOfGoodPVtxVsPVtx->setAxisTitle("Number of Good PV", 1);
    FractionOfGoodPVtxVsPVtx->setAxisTitle("Mean number of Good PV", 2);

    histname = "NumberOfBADndofPVtxVsGoodPVtx_" + label_;
    NumberOfBADndofPVtxVsGoodPVtx = ibooker.bookProfile(
        histname, histname, GoodPVtxBin, GoodPVtxMin, GoodPVtxMax, GoodPVtxMin, GoodPVtxMax * 3, "");
    NumberOfBADndofPVtxVsGoodPVtx->getTH1()->SetCanExtend(TH1::kAllAxes);
    NumberOfBADndofPVtxVsGoodPVtx->setAxisTitle("Number of Good PV", 1);
    NumberOfBADndofPVtxVsGoodPVtx->setAxisTitle("Mean Number of BAD PV", 2);

    histname = "GoodPVtxSumPtVsGoodPVtx_" + label_;
    GoodPVtxSumPtVsGoodPVtx = ibooker.bookProfile(
        histname, histname, GoodPVtxBin, GoodPVtxMin, GoodPVtxMax, SumPtPVtxMin, SumPtPVtxMax * 3, "");
    GoodPVtxSumPtVsGoodPVtx->getTH1()->SetCanExtend(TH1::kAllAxes);
    GoodPVtxSumPtVsGoodPVtx->setAxisTitle("Number of Good PV", 1);
    GoodPVtxSumPtVsGoodPVtx->setAxisTitle("Mean pv #Sum p_{T}^{2} [GeV^{2}/c]^{2}", 2);

    histname = "GoodPVtxNumberOfTracksVsGoodPVtx_" + label_;
    GoodPVtxNumberOfTracksVsGoodPVtx = ibooker.bookProfile(
        histname, histname, GoodPVtxBin, GoodPVtxMin, GoodPVtxMax, NTrkPVtxMin, NTrkPVtxMax * 3, "");
    GoodPVtxNumberOfTracksVsGoodPVtx->getTH1()->SetCanExtend(TH1::kAllAxes);
    GoodPVtxNumberOfTracksVsGoodPVtx->setAxisTitle("Number of Good PV", 1);
    GoodPVtxNumberOfTracksVsGoodPVtx->setAxisTitle("Mean pv number of tracks", 2);

    // get binning from the configuration
    double Chi2NDFMin = conf_.getParameter<double>("Chi2NDFMin");
    double Chi2NDFMax = conf_.getParameter<double>("Chi2NDFMax");

    double Chi2ProbMin = conf_.getParameter<double>("Chi2ProbMin");
    double Chi2ProbMax = conf_.getParameter<double>("Chi2ProbMax");

    histname = "GoodPVtxChi2oNDFVsGoodPVtx_" + label_;
    GoodPVtxChi2oNDFVsGoodPVtx =
        ibooker.bookProfile(histname, histname, GoodPVtxBin, GoodPVtxMin, GoodPVtxMax, Chi2NDFMin, Chi2NDFMax * 3, "");
    GoodPVtxChi2oNDFVsGoodPVtx->getTH1()->SetCanExtend(TH1::kAllAxes);
    GoodPVtxChi2oNDFVsGoodPVtx->setAxisTitle("Number of Good PV", 1);
    GoodPVtxChi2oNDFVsGoodPVtx->setAxisTitle("Mean PV #chi^{2}/ndof", 2);

    histname = "GoodPVtxChi2ProbVsGoodPVtx_" + label_;
    GoodPVtxChi2ProbVsGoodPVtx = ibooker.bookProfile(
        histname, histname, GoodPVtxBin, GoodPVtxMin, GoodPVtxMax, Chi2ProbMin, Chi2ProbMax * 3, "");
    GoodPVtxChi2ProbVsGoodPVtx->getTH1()->SetCanExtend(TH1::kAllAxes);
    GoodPVtxChi2ProbVsGoodPVtx->setAxisTitle("Number of Good PV", 1);
    GoodPVtxChi2ProbVsGoodPVtx->setAxisTitle("Mean PV #chi^{2}/prob", 2);
  }
}

// ------------ method fills 'descriptions' with the allowed parameters for the module  ------------
void VertexMonitor::fillDescriptions(edm::ConfigurationDescriptions& descriptions) {
  //The following says we do not know what parameters are allowed so do no validation
  // Please change this to state exactly what you do use, even if it is no parameters
  edm::ParameterSetDescription desc;
  desc.setUnknown();
  descriptions.addDefault(desc);
}