JetReCalibrator.JetReCalibrator Class Reference

Public Member Functions
def	__init__
def	correct
def	correctAll
def	getCorrection
def	rawP4forType1MET_

Public Attributes
	calculateType1METCorr
	doResidualJECs
	globalTag
	jecPath
	JetCorrector
	jetFlavour
	JetUncertainty
	L1JetPar
	L2JetPar
	L3JetPar
	ResJetPar
	separateJetCorrectors
	type1METParams
	upToLevel
	vPar
	vParL1
	vParL2
	vParL3
	vParL3Res

Detailed Description

Definition at line 6 of file JetReCalibrator.py.

Constructor & Destructor Documentation

def JetReCalibrator.JetReCalibrator.__init__	(		self,
			globalTag,
			jetFlavour,
			doResidualJECs,
			jecPath,
			upToLevel = 3,
			calculateSeparateCorrections = False,
			calculateType1METCorrection = False,
			type1METParams = {'jetPtThreshold':15.,
			skipEMfractionThreshold
	)

Definition at line 9 of file JetReCalibrator.py.

                 calculateType1METCorrection=False, type1METParams={'jetPtThreshold':15., 'skipEMfractionThreshold':0.9, 'skipMuons':True} ):
        """Create a corrector object that reads the payloads from the text dumps of a global tag under
            CMGTools/RootTools/data/jec  (see the getJec.py there to make the dumps).
           It will apply the L1,L2,L3 and possibly the residual corrections to the jets.
           If configured to do so, it will also compute the type1 MET corrections."""
        self.globalTag = globalTag
        self.jetFlavour = jetFlavour
        self.doResidualJECs = doResidualJECs
        self.jecPath = jecPath
        self.upToLevel = upToLevel
        self.calculateType1METCorr = calculateType1METCorrection
        self.type1METParams  = type1METParams
        # Make base corrections
        path = os.path.expandvars(jecPath) #"%s/src/CMGTools/RootTools/data/jec" % os.environ['CMSSW_BASE'];
        self.L1JetPar  = ROOT.JetCorrectorParameters("%s/%s_L1FastJet_%s.txt" % (path,globalTag,jetFlavour),"");
        self.L2JetPar  = ROOT.JetCorrectorParameters("%s/%s_L2Relative_%s.txt" % (path,globalTag,jetFlavour),"");
        self.L3JetPar  = ROOT.JetCorrectorParameters("%s/%s_L3Absolute_%s.txt" % (path,globalTag,jetFlavour),"");
        self.vPar = ROOT.vector(ROOT.JetCorrectorParameters)()
        self.vPar.push_back(self.L1JetPar);
        if upToLevel >= 2: self.vPar.push_back(self.L2JetPar);
        if upToLevel >= 3: self.vPar.push_back(self.L3JetPar);
        # Add residuals if needed
        if doResidualJECs : 
            self.ResJetPar = ROOT.JetCorrectorParameters("%s/%s_L2L3Residual_%s.txt" % (path,globalTag,jetFlavour))
            self.vPar.push_back(self.ResJetPar);
        #Step3 (Construct a FactorizedJetCorrector object) 
        self.JetCorrector = ROOT.FactorizedJetCorrector(self.vPar)
        if os.path.exists("%s/%s_Uncertainty_%s.txt" % (path,globalTag,jetFlavour)):
            self.JetUncertainty = ROOT.JetCorrectionUncertainty("%s/%s_Uncertainty_%s.txt" % (path,globalTag,jetFlavour));
        elif os.path.exists("%s/Uncertainty_FAKE.txt" % path):
            self.JetUncertainty = ROOT.JetCorrectionUncertainty("%s/Uncertainty_FAKE.txt" % path);
        else:
            print 'Missing JEC uncertainty file "%s/%s_Uncertainty_%s.txt", so jet energy uncertainties will not be available' % (path,globalTag,jetFlavour)
            self.JetUncertainty = None
        self.separateJetCorrectors = {}
        if calculateSeparateCorrections or calculateType1METCorrection:
            self.vParL1 = ROOT.vector(ROOT.JetCorrectorParameters)()
            self.vParL1.push_back(self.L1JetPar)
            self.separateJetCorrectors["L1"] = ROOT.FactorizedJetCorrector(self.vParL1)
            if upToLevel >= 2 and calculateSeparateCorrections:
                self.vParL2 = ROOT.vector(ROOT.JetCorrectorParameters)()
                for i in [self.L1JetPar,self.L2JetPar]: self.vParL2.push_back(i)
                self.separateJetCorrectors["L1L2"] = ROOT.FactorizedJetCorrector(self.vParL2)
            if upToLevel >= 3 and calculateSeparateCorrections:
                self.vParL3 = ROOT.vector(ROOT.JetCorrectorParameters)()
                for i in [self.L1JetPar,self.L2JetPar,self.L3JetPar]: self.vParL3.push_back(i)
                self.separateJetCorrectors["L1L2L3"] = ROOT.FactorizedJetCorrector(self.vParL3)
            if doResidualJECs and calculateSeparateCorrections:
                self.vParL3Res = ROOT.vector(ROOT.JetCorrectorParameters)()
                for i in [self.L1JetPar,self.L2JetPar,self.L3JetPar,self.ResJetPar]: self.vParL3Res.push_back(i)
                self.separateJetCorrectors["L1L2L3Res"] = ROOT.FactorizedJetCorrector(self.vParL3Res)