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// $Id: FakeRate.cc,v 1.6 2009/11/03 08:40:37 ceballos Exp $
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#include "MitPhysics/FakeMods/interface/FakeRate.h"
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#include "MitCommon/DataFormats/interface/TH2DAsymErr.h"
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#include <TMath.h>
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#include <TFile.h>
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#include <TMath.h>
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#include <TH1.h>
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#include <TH2.h>
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#include <TH3.h>
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#include <TF1.h>
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#include <TF2.h>
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using namespace mithep;
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using namespace std;
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ClassImp(mithep::FakeRate)
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//--------------------------------------------------------------------------------------------------
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Bool_t FakeRate::Init()
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{
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// Load all fake rate histogram files.
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// get the root file which is storing the fake rates
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TFile *ElectronFRFile = new TFile(fElectronFRFilename);
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if (!ElectronFRFile) {
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cerr << "The Electron FakeRate file : " << fElectronFRFilename << " could not be opened!\n";
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return kFALSE;
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}
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TFile *MuonFRFile = new TFile(fMuonFRFilename);
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if (!MuonFRFile) {
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cerr << "The Muon FakeRate file : " << fMuonFRFilename << " could not be opened!\n";
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return kFALSE;
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}
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// load histogram/fit functions from the file
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if (fUse2DFakeRate) {
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fElectronFakeRateHist_PtEta = (TH2DAsymErr*)(ElectronFRFile->Get(fElectronFRHistName));
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fMuonFakeRateHist_PtEta = (TH2DAsymErr*)(MuonFRFile->Get(fMuonFRHistName));
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if (!fElectronFakeRateHist_PtEta) {
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cout << "Error: Histogram " << fElectronFRHistName << " cannot be loaded from file "
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<< fElectronFRFilename << endl;
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}
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if (!fMuonFakeRateHist_PtEta) {
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cout << "Error: Histogram " << fMuonFRHistName << " cannot be loaded. from file"
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<< fMuonFRFilename << endl;
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}
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fElectronFakeRateHist_PtEta->SetDirectory(0);
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fMuonFakeRateHist_PtEta->SetDirectory(0);
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cout << " check fake rate histogram : " << fElectronFRHistName << " from " << fElectronFRFilename << endl;
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for (int b=0;b<=fElectronFakeRateHist_PtEta->GetXaxis()->GetNbins();b++) {
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for (int c=0;c<=fElectronFakeRateHist_PtEta->GetYaxis()->GetNbins();c++) {
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Double_t x = fElectronFakeRateHist_PtEta->GetXaxis()->GetBinCenter(b);
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Double_t y = fElectronFakeRateHist_PtEta->GetYaxis()->GetBinCenter(c);
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cout << "bin : " << x << " " << y << " " << fElectronFakeRateHist_PtEta->GetBinContent(b,c) << " | " << fElectronFakeRateHist_PtEta->GetStatErrorLow(x,y) << " " << fElectronFakeRateHist_PtEta->GetStatErrorHigh(x,y) << " " << fElectronFakeRateHist_PtEta->GetSysErrorLow(x,y) << " " << fElectronFakeRateHist_PtEta->GetSysErrorHigh(x,y) << endl;
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}
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}
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if (fUseFitFunction) {
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//Currently unsupported
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cerr << "Error: Using 2D Fake Rates with Fit Function is not currently supported.\n";
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return kFALSE;
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//Once supported, below code will load the functions.
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TF2 *ElectronFakeRateFit_PtEta_temp = (TF2*)(ElectronFRFile->Get(fElectronFRFunctionName));
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TF2 *MuonFakeRateFit_PtEta_temp = (TF2*)(MuonFRFile->Get(fMuonFRFunctionName));
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if (!ElectronFakeRateFit_PtEta_temp) {
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cout << "Error: Function " << fElectronFRFunctionName << " cannot be loaded from file "
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<< fElectronFRFilename << endl;
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}
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if (!MuonFakeRateFit_PtEta_temp) {
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cout << "Error: Function " << fMuonFRFunctionName << " cannot be loaded. from file"
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<< fMuonFRFilename << endl;
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}
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fElectronFakeRateFit_PtEta = (TF2*)(ElectronFakeRateFit_PtEta_temp->Clone());
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fMuonFakeRateFit_PtEta = (TF2*)(MuonFakeRateFit_PtEta_temp->Clone());
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}
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} else {
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fElectronFakeRateHist_Pt = (TH1F*)(ElectronFRFile->Get(fElectronFRHistName));
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fMuonFakeRateHist_Pt = (TH1F*)(MuonFRFile->Get(fMuonFRHistName));
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if (!fElectronFakeRateHist_Pt) {
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cout << "Error: Histogram " << fElectronFRHistName << " cannot be loaded from file "
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<< fElectronFRFilename << endl;
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}
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if (!fMuonFakeRateHist_Pt) {
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cout << "Error: Histogram " << fMuonFRHistName << " cannot be loaded. from file"
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<< fMuonFRFilename << endl;
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}
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fElectronFakeRateHist_Pt->SetDirectory(0);
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fMuonFakeRateHist_Pt->SetDirectory(0);
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if (fUseFitFunction) {
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TF1 *ElectronFakeRateFit_Pt_temp = (TF1*)(ElectronFRFile->Get(fElectronFRFunctionName));
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TF1 *MuonFakeRateFit_Pt_temp = (TF1*)(MuonFRFile->Get(fMuonFRFunctionName));
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if (!ElectronFakeRateFit_Pt_temp) {
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cout << "Error: Function " << fElectronFRFunctionName << " cannot be loaded from file "
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<< fElectronFRFilename << endl;
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}
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if (!MuonFakeRateFit_Pt_temp) {
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cout << "Error: Function " << fMuonFRFunctionName << " cannot be loaded. from file"
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<< fMuonFRFilename << endl;
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}
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fElectronFakeRateFit_Pt = (TF1*)(ElectronFakeRateFit_Pt_temp->Clone());
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fMuonFakeRateFit_Pt = (TF1*)(MuonFakeRateFit_Pt_temp->Clone());
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}
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}
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ElectronFRFile->Close();
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MuonFRFile->Close();
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delete ElectronFRFile;
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delete MuonFRFile;
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return true;
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}
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//--------------------------------------------------------------------------------------------------
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Double_t FakeRate::ElectronFakeRate(Double_t pt, Double_t eta, Double_t phi)
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{
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// Calculate the electron fake rate given pt, eta, and phi.
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Double_t prob = 0.0;
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if (fIsInit) {
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if (fUse2DFakeRate) {
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if (fUseFitFunction) {
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cerr << "Error: Using 2D Fake Rates with Fit Function is not currently supported.\n";
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} else {
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if (fElectronFakeRateHist_PtEta) {
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Int_t ptbin = fElectronFakeRateHist_PtEta->GetXaxis()->FindFixBin(pt);
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Int_t etabin = fElectronFakeRateHist_PtEta->GetYaxis()->FindFixBin(eta);
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prob = fElectronFakeRateHist_PtEta->GetBinContent(ptbin,etabin);
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} else {
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Fatal("ElectronFakeRate","Error: fElectronFakeRateHist_PtEta was not loaded properly.");
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}
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}
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} else {
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if (fUseFitFunction) {
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if (fElectronFakeRateFit_Pt) {
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prob = fElectronFakeRateFit_Pt->Eval(pt);
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} else {
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Fatal("ElectronFakeRate","Error: fElectronFakeRateFit_Pt was not loaded properly.");
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}
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} else {
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if (fElectronFakeRateHist_Pt) {
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Int_t ptbin = fElectronFakeRateHist_Pt->GetXaxis()->FindFixBin(pt);
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prob = fElectronFakeRateHist_Pt->GetBinContent(ptbin);
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} else {
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Fatal("ElectronFakeRate","Error: fElectronFakeRateHist_Pt was not loaded properly.");
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}
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}
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}
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} else {
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Fatal("ElectronFakeRate","Error: FakeRate was not properly initialized.");
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}
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if (prob > 1) {
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cerr << "Fake Rate = " << prob << " is larger than 1.0" << endl;
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}
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return prob;
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}
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//--------------------------------------------------------------------------------------------------
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Double_t FakeRate::ElectronFakeRateError(Double_t pt, Double_t eta, Double_t phi,
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TH2DAsymErr::EErrType errorType)
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{
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// Calculate the electron fake rate error given pt, eta, and phi
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Double_t error = 0.0;
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if (fIsInit) {
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if (fUse2DFakeRate) {
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if (fUseFitFunction) {
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} else {
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if (fElectronFakeRateHist_PtEta) {
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return fElectronFakeRateHist_PtEta->GetError(pt, eta, errorType);
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} else {
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Fatal("ElectronFakeRate","Error: fElectronFakeRateHist_PtEta_sysError was not loaded properly.");
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}
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}
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}
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} else {
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Fatal("ElectronFakeRate","Error: FakeRate was not properly initialized.");
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}
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return error;
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}
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//--------------------------------------------------------------------------------------------------
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Double_t FakeRate::ElectronFakeRateStatErrorLow(Double_t pt, Double_t eta, Double_t phi)
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{
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// Calculate the electron fake rate lower statistical error given pt, eta, and phi
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return ElectronFakeRateError(pt, eta, phi, mithep::TH2DAsymErr::kStatErrLow);
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}
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//--------------------------------------------------------------------------------------------------
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Double_t FakeRate::ElectronFakeRateStatErrorHigh(Double_t pt, Double_t eta, Double_t phi)
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{
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// Calculate the electron fake rate upper statistical error given pt, eta, and phi
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return ElectronFakeRateError(pt, eta, phi, TH2DAsymErr::kStatErrHigh);
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}
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//--------------------------------------------------------------------------------------------------
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Double_t FakeRate::ElectronFakeRateSysErrorLow(Double_t pt, Double_t eta, Double_t phi)
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{
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// Calculate the electron fake rate lower systematic error given pt, eta, and phi
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return ElectronFakeRateError(pt, eta, phi, TH2DAsymErr::kSysErrLow);
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}
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//--------------------------------------------------------------------------------------------------
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Double_t FakeRate::ElectronFakeRateSysErrorHigh(Double_t pt, Double_t eta, Double_t phi)
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{
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// Calculate the electron fake rate upper systematic error given pt, eta, and phi
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return ElectronFakeRateError(pt, eta, phi, TH2DAsymErr::kSysErrHigh);
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}
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//--------------------------------------------------------------------------------------------------
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Double_t FakeRate::ElectronFakeRateErrorLow(Double_t pt, Double_t eta, Double_t phi)
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{
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// Calculate the electron fake rate total lower error given pt, eta, and phi
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return TMath::Sqrt( ElectronFakeRateError(pt, eta, phi, TH2DAsymErr::kSysErrLow)*
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ElectronFakeRateError(pt, eta, phi, TH2DAsymErr::kSysErrLow) +
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ElectronFakeRateError(pt, eta, phi, TH2DAsymErr::kStatErrLow)*
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ElectronFakeRateError(pt, eta, phi, TH2DAsymErr::kStatErrLow)
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);
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}
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//--------------------------------------------------------------------------------------------------
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Double_t FakeRate::ElectronFakeRateErrorHigh(Double_t pt, Double_t eta, Double_t phi)
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{
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// Calculate the electron fake rate total upper error given pt, eta, and phi
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return TMath::Sqrt( ElectronFakeRateError(pt, eta, phi, TH2DAsymErr::kSysErrHigh)*
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ElectronFakeRateError(pt, eta, phi, TH2DAsymErr::kSysErrHigh) +
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ElectronFakeRateError(pt, eta, phi, TH2DAsymErr::kStatErrHigh)*
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ElectronFakeRateError(pt, eta, phi, TH2DAsymErr::kStatErrHigh)
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);
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}
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//--------------------------------------------------------------------------------------------------
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Double_t FakeRate::MuonFakeRate(Double_t pt, Double_t eta, Double_t phi)
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{
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// Calculate the muon fake rate given pt, eta, and phi
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Double_t prob = 0.0;
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if (fIsInit) {
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if (fUse2DFakeRate) {
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if (fUseFitFunction) {
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cerr << "Error: Using 2D Fake Rates with Fit Function is not currently supported.\n";
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} else {
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if (fMuonFakeRateHist_PtEta) {
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Int_t ptbin = fMuonFakeRateHist_PtEta->GetXaxis()->FindFixBin(pt);
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Int_t etabin = fMuonFakeRateHist_PtEta->GetYaxis()->FindFixBin(eta);
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prob = fMuonFakeRateHist_PtEta->GetBinContent(ptbin,etabin);
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} else {
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Fatal("ElectronFakeRate","Error: fMuonFakeRateHist_PtEta was not loaded properly.");
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}
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}
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} else {
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if (fUseFitFunction) {
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if (fMuonFakeRateFit_Pt) {
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prob = fMuonFakeRateFit_Pt->Eval(pt);
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} else {
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Fatal("ElectronFakeRate","Error: fMuonFakeRateFit_Pt was not loaded properly.");
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}
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} else {
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if (fMuonFakeRateHist_Pt) {
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Int_t ptbin = fMuonFakeRateHist_Pt->GetXaxis()->FindFixBin(pt);
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prob = fMuonFakeRateHist_Pt->GetBinContent(ptbin);
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} else {
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Fatal("ElectronFakeRate","Error: fMuonFakeRateHist_Pt was not loaded properly.");
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}
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}
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}
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} else {
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Fatal("ElectronFakeRate","Error: FakeRate was not properly initialized.");
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}
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if (prob > 1) {
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cerr << "Fake Rate is larger than 1.0" << endl;
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}
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return prob;
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}
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//--------------------------------------------------------------------------------------------------
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Double_t FakeRate::MuonFakeRateError(Double_t pt, Double_t eta, Double_t phi,
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TH2DAsymErr::EErrType errorType)
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{
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// Calculate the muon fake rate error given pt, eta, and phi.
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Double_t error = 0.0;
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if (fIsInit) {
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if (fUse2DFakeRate) {
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if (fUseFitFunction) {
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cerr << "Error: Using 2D Fake Rates with Fit Function is not currently supported.\n";
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} else {
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if (fMuonFakeRateHist_PtEta) {
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return fMuonFakeRateHist_PtEta->GetError(pt, eta, errorType);
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} else {
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Fatal("ElectronFakeRate","Error: fMuonFakeRateHist_PtEta_sysError was not loaded properly.");
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}
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}
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}
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} else {
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Fatal("ElectronFakeRate","Error: FakeRate was not properly initialized.");
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}
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return error;
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}
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//--------------------------------------------------------------------------------------------------
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Double_t FakeRate::MuonFakeRateStatErrorLow(Double_t pt, Double_t eta, Double_t phi)
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{
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// Calculate the muon fake rate lower statistical error given pt, eta, and phi.
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return MuonFakeRateError(pt, eta, phi, TH2DAsymErr::kStatErrLow);
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}
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//--------------------------------------------------------------------------------------------------
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Double_t FakeRate::MuonFakeRateStatErrorHigh(Double_t pt, Double_t eta, Double_t phi)
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{
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// Calculate the muon fake rate upper statistical error given pt, eta, and phi.
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return MuonFakeRateError(pt, eta, phi, TH2DAsymErr::kStatErrHigh);
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}
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//--------------------------------------------------------------------------------------------------
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Double_t FakeRate::MuonFakeRateSysErrorLow(Double_t pt, Double_t eta, Double_t phi)
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{
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// Calculate the muon fake rate lower systematic error given pt, eta, and phi.
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return MuonFakeRateError(pt, eta, phi, TH2DAsymErr::kSysErrLow);
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}
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//--------------------------------------------------------------------------------------------------
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Double_t FakeRate::MuonFakeRateSysErrorHigh(Double_t pt, Double_t eta, Double_t phi)
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{
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// Calculate the muon fake rate upper systematic error given pt, eta, and phi.
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return MuonFakeRateError(pt, eta, phi, TH2DAsymErr::kSysErrHigh);
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}
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//--------------------------------------------------------------------------------------------------
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Double_t FakeRate::MuonFakeRateErrorLow(Double_t pt, Double_t eta, Double_t phi)
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{
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// Calculate the muon fake rate total lower error given pt, eta, and phi.
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return TMath::Sqrt( MuonFakeRateError(pt, eta, phi, mithep::TH2DAsymErr::kSysErrLow)*
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MuonFakeRateError(pt, eta, phi, mithep::TH2DAsymErr::kSysErrLow) +
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MuonFakeRateError(pt, eta, phi, mithep::TH2DAsymErr::kStatErrLow)*
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MuonFakeRateError(pt, eta, phi, mithep::TH2DAsymErr::kStatErrLow)
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);
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}
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//--------------------------------------------------------------------------------------------------
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Double_t FakeRate::MuonFakeRateErrorHigh(Double_t pt, Double_t eta, Double_t phi)
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{
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// Calculate the muon fake rate total upper error given pt, eta, and phi.
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return TMath::Sqrt( MuonFakeRateError(pt, eta, phi, TH2DAsymErr::kSysErrHigh)*
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MuonFakeRateError(pt, eta, phi, TH2DAsymErr::kSysErrHigh) +
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MuonFakeRateError(pt, eta, phi, TH2DAsymErr::kStatErrHigh)*
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MuonFakeRateError(pt, eta, phi, TH2DAsymErr::kStatErrHigh)
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);
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}
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