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AliEPSelectionTask.cxx
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/**************************************************************************
* Copyright(c) 1998-2008, ALICE Experiment at CERN, All rights reserved. *
* *
* Author: The ALICE Off-line Project. *
* Contributors are mentioned in the code where appropriate. *
* *
* Permission to use, copy, modify and distribute this software and its *
* documentation strictly for non-commercial purposes is hereby granted *
* without fee, provided that the above copyright notice appears in all *
* copies and that both the copyright notice and this permission notice *
* appear in the supporting documentation. The authors make no claims *
* about the suitability of this software for any purpose. It is *
* provided "as is" without express or implied warranty. *
**************************************************************************/
//*****************************************************
// Class AliEPSelectionTask
// Class to determine event plane
// author: Alberica Toia, Johanna Gramling
//*****************************************************
#include "AliEPSelectionTask.h"
#include <TTree.h>
#include <TList.h>
#include <TH1F.h>
#include <TH2F.h>
#include <THnSparse.h>
#include <TProfile.h>
#include <TFile.h>
#include <TObjString.h>
#include <TString.h>
#include <TCanvas.h>
#include <TROOT.h>
#include <TDirectory.h>
#include <TSystem.h>
#include <iostream>
#include <TRandom2.h>
#include <TArrayF.h>
#include "AliAnalysisManager.h"
#include "AliVEvent.h"
#include "AliESD.h"
#include "AliESDEvent.h"
#include "AliMCEvent.h"
#include "AliESDtrack.h"
#include "AliESDtrackCuts.h"
#include "AliESDHeader.h"
#include "AliESDInputHandler.h"
#include "AliAODHandler.h"
#include "AliAODEvent.h"
#include "AliHeader.h"
#include "AliGenHijingEventHeader.h"
#include "AliAnalysisTaskSE.h"
#include "AliBackgroundSelection.h"
#include "AliESDUtils.h"
#include "AliOADBContainer.h"
#include "AliAODMCHeader.h"
#include "AliAODTrack.h"
#include "AliVTrack.h"
#include "AliMultSelection.h"
#include "AliEventplane.h"
using std::cout;
using std::endl;
ClassImp(AliEPSelectionTask)
//________________________________________________________________________
AliEPSelectionTask::AliEPSelectionTask():
AliAnalysisTaskSE(),
fAnalysisInput("ESD"),
fTrackType("TPC"),
fPeriod(""),
fCentrality(-1.),
fUseMCRP(kFALSE),
fUsePhiWeight(kFALSE),
fUsePtWeight(kFALSE),
fUseRecentering(kFALSE),
fSaveTrackContribution(kFALSE),
fUserphidist(kFALSE),
fUsercuts(kFALSE),
fRunNumber(-15),
fAODfilterbit(1),
fEtaGap(0.),
fSplitMethod(0),
fESDtrackCuts(0),
fEPContainer(0),
fQxContainer(0),
fQyContainer(0),
fSparseDist(0),
fHruns(0),
fQVector(0),
fQContributionX(0),
fQContributionY(0),
fEventplaneQ(0),
fQsub1(0),
fQsub2(0),
fQsubRes(0),
fOutputList(0),
fHOutEventplaneQ(0),
fHOutPhi(0),
fHOutPhiCorr(0),
fHOutsub1sub2(0),
fHOutNTEPRes(0),
fHOutPTPsi(0),
fHOutDiff(0),
fHOutleadPTPsi(0)
{
// Default constructor
AliInfo("Event Plane Selection enabled.");
for(Int_t i = 0; i < 4; ++i) {
fPhiDist[i] = 0;
}
for(Int_t i = 0; i < 2; ++i) {
fQDist[i] = 0;
}
}
//________________________________________________________________________
AliEPSelectionTask::AliEPSelectionTask(const char *name):
AliAnalysisTaskSE(name),
fAnalysisInput("ESD"),
fTrackType("TPC"),
fPeriod(""),
fCentrality(-1.),
fUseMCRP(kFALSE),
fUsePhiWeight(kFALSE),
fUsePtWeight(kFALSE),
fUseRecentering(kFALSE),
fSaveTrackContribution(kFALSE),
fUserphidist(kFALSE),
fUsercuts(kFALSE),
fRunNumber(-15),
fAODfilterbit(1),
fEtaGap(0.),
fSplitMethod(0),
fESDtrackCuts(0),
fEPContainer(0),
fQxContainer(0),
fQyContainer(0),
fSparseDist(0),
fHruns(0),
fQVector(0),
fQContributionX(0),
fQContributionY(0),
fEventplaneQ(0),
fQsub1(0),
fQsub2(0),
fQsubRes(0),
fOutputList(0),
fHOutEventplaneQ(0),
fHOutPhi(0),
fHOutPhiCorr(0),
fHOutsub1sub2(0),
fHOutNTEPRes(0),
fHOutPTPsi(0),
fHOutDiff(0),
fHOutleadPTPsi(0)
{
// Default constructor
AliInfo("Event Plane Selection enabled.");
DefineOutput(1, TList::Class());
for(Int_t i = 0; i < 4; i++) {
fPhiDist[i] = 0;
}
for(Int_t i = 0; i < 2; ++i) {
fQDist[i] = 0;
}
}
//________________________________________________________________________
AliEPSelectionTask::~AliEPSelectionTask()
{
// Destructor
if (fOutputList && !AliAnalysisManager::GetAnalysisManager()->IsProofMode()){
delete fOutputList;
fOutputList = 0;
}
if (fESDtrackCuts){
delete fESDtrackCuts;
fESDtrackCuts = 0;
}
if (fUserphidist) {
if (fPhiDist[0]) {
delete fPhiDist[0];
fPhiDist[0] = 0;
}
}
if (fEPContainer){
delete fEPContainer;
fEPContainer = 0;
}
if (fPeriod.CompareTo("LHC11h")==0){
for(Int_t i = 0; i < 4; i++) {
if(fPhiDist[i]){
delete fPhiDist[i];
fPhiDist[i] = 0;
}
}
if(fHruns) delete fHruns;
}
if(fQDist[0] && fQDist[1]) {
for(Int_t i = 0; i < 2; i++) {
if(fQDist[i]){
delete fQDist[i];
fQDist[i] = 0;
}
}
}
}
//________________________________________________________________________
void AliEPSelectionTask::UserCreateOutputObjects()
{
// Create the output containers
if (fDebug>1) printf("AliEPSelectionTask::UserCreateOutputObjects() \n");
AliLog::SetClassDebugLevel("AliEPSelectionTask", AliLog::kInfo);
fOutputList = new TList();
fOutputList->SetOwner();
fHOutEventplaneQ = new TH1F("fHOutEventplaneQ","fHOutEventplaneQ; Event Plane Q",100,0,TMath::Pi());
fHOutPhi = new TH1F("fHOutPhi","fHOutPhi; Phi Distribution",100,0,TMath::TwoPi());
fHOutPhiCorr = new TH1F("fHOutPhiCorr","fHOutPhiCorr; Corrected Phi Distribution",100,0,TMath::TwoPi());
fHOutsub1sub2 = new TH2F("fHOutsub1sub2","fHOutsub1sub2; EP1; EP2",100,0,TMath::Pi(),100,0,TMath::Pi());
fHOutNTEPRes = new TH2F("fHOutNTEPRes","fHOutNTEPRes; Number of Tracks; Event Plane Resolution",100,0,5000,100,-TMath::Pi(),TMath::Pi());
fHOutPTPsi = new TH2F("fHOutPTPsi","fHOutPTPsi; PT; Phi-EP",100,0,20,100,0,TMath::Pi());
fHOutDiff = new TH2F("fHOutDiff","fHOutDiff; EP; MCEP",100,0,TMath::Pi(),100,0,TMath::Pi());
fHOutleadPTPsi = new TH2F("fHOutleadPTPsi","fHOutleadPTPsi; leadPT; EP",100,0,TMath::Pi(),100,0,TMath::Pi());
fOutputList->Add(fHOutEventplaneQ);
fOutputList->Add(fHOutPhi);
fOutputList->Add(fHOutPhiCorr);
fOutputList->Add(fHOutsub1sub2);
fOutputList->Add(fHOutNTEPRes);
fOutputList->Add(fHOutPTPsi);
fOutputList->Add(fHOutleadPTPsi);
fOutputList->Add(fHOutDiff);
PostData(1, fOutputList);
}
//________________________________________________________________________
void AliEPSelectionTask::UserExec(Option_t */*option*/)
{
// Execute analysis for current event:
if (fDebug>1) printf(" **** AliEPSelectionTask::UserExec() \n");
// fRunNumber = -15;
AliEventplane *esdEP;
TVector2 qq1;
TVector2 qq2;
Double_t fRP = 0.; // monte carlo reaction plane angle
if (fAnalysisInput.CompareTo("ESD")==0){
AliVEvent* event = InputEvent();
AliESDEvent* esd = dynamic_cast<AliESDEvent*>(event);
if (esd){
if (!(fRunNumber == esd->GetRunNumber())) {
fRunNumber = esd->GetRunNumber();
AliInfo(Form("Changing Phi-distribution to run %d",fRunNumber));
SetOADBandPeriod();
SetPhiDist();
SetQvectorDist(); // recentring objects
}
if (fUseMCRP) {
AliMCEvent* mcEvent = MCEvent();
if (mcEvent && mcEvent->GenEventHeader()) {
AliGenHijingEventHeader* headerH = dynamic_cast<AliGenHijingEventHeader*>(mcEvent->GenEventHeader());
if (headerH) fRP = headerH->ReactionPlaneAngle();
}
}
esdEP = esd->GetEventplane();
if (fSaveTrackContribution) {
esdEP->GetQContributionXArray()->Set(esd->GetNumberOfTracks());
esdEP->GetQContributionYArray()->Set(esd->GetNumberOfTracks());
esdEP->GetQContributionXArraysub1()->Set(esd->GetNumberOfTracks());
esdEP->GetQContributionYArraysub1()->Set(esd->GetNumberOfTracks());
esdEP->GetQContributionXArraysub2()->Set(esd->GetNumberOfTracks());
esdEP->GetQContributionYArraysub2()->Set(esd->GetNumberOfTracks());
}
TObjArray* tracklist = new TObjArray;
if (fTrackType.CompareTo("GLOBAL")==0) tracklist = fESDtrackCuts->GetAcceptedTracks(esd,kFALSE);
if (fTrackType.CompareTo("TPC")==0 && fPeriod.CompareTo("LHC10h")==0) tracklist = fESDtrackCuts->GetAcceptedTracks(esd,kTRUE);
else if (fTrackType.CompareTo("TPC")==0 && fPeriod.CompareTo("LHC11h")==0) tracklist = GetTracksForLHC11h(esd);
const int nt = tracklist->GetEntries();
if (nt>4){
// qvector full event
fQVector = new TVector2(GetQ(esdEP,tracklist));
fEventplaneQ = fQVector->Phi()/2;
// q vector subevents
GetQsub(qq1, qq2, tracklist, esdEP);
fQsub1 = new TVector2(qq1);
fQsub2 = new TVector2(qq2);
fQsubRes = (fQsub1->Phi()/2 - fQsub2->Phi()/2);
esdEP->SetQVector(fQVector);
esdEP->SetEventplaneQ(fEventplaneQ);
esdEP->SetQsub(fQsub1,fQsub2);
esdEP->SetQsubRes(fQsubRes);
fHOutEventplaneQ->Fill(fEventplaneQ);
fHOutsub1sub2->Fill(fQsub1->Phi()/2,fQsub2->Phi()/2);
fHOutNTEPRes->Fill(nt,fQsubRes);
if (fUseMCRP) fHOutDiff->Fill(fEventplaneQ, fRP);
for (int iter = 0; iter<nt;iter++){
AliESDtrack* track = dynamic_cast<AliESDtrack*> (tracklist->At(iter));
if (track) {
float delta = track->Phi()-fEventplaneQ;
while (delta < 0) delta += TMath::Pi();
while (delta > TMath::Pi()) delta -= TMath::Pi();
fHOutPTPsi->Fill(track->Pt(),delta);
fHOutPhi->Fill(track->Phi());
fHOutPhiCorr->Fill(track->Phi(),GetPhiWeight(track));
}
}
AliESDtrack* trmax = esd->GetTrack(0);
for (int iter = 1; iter<nt;iter++){
AliESDtrack* track = dynamic_cast<AliESDtrack*> (tracklist->At(iter));
if (track && (track->Pt() > trmax->Pt())) trmax = track;
}
fHOutleadPTPsi->Fill(trmax->Phi(),fEventplaneQ);
}
tracklist->Clear();
delete tracklist;
tracklist = 0;
}
}
else if (fAnalysisInput.CompareTo("AOD")==0){
AliVEvent* event = InputEvent();
AliAODEvent* aod = dynamic_cast<AliAODEvent*>(event);
if (aod){
// get centrality of the event
AliAODHeader *header=dynamic_cast<AliAODHeader*>(aod->GetHeader());
if(!header) AliFatal("Not a standard AOD");
if(AliMultSelection *multSelection = (AliMultSelection*)event->FindListObject("MultSelection")){
fCentrality = multSelection->GetMultiplicityPercentile("V0M",kFALSE);
}
else{
AliCentrality *centrality=header->GetCentralityP();
if(!centrality) AliError(Form("No AliCentrality attached to AOD header"));
fCentrality = centrality->GetCentralityPercentile("V0M");
}
if (!(fRunNumber == aod->GetRunNumber())) {
fRunNumber = aod->GetRunNumber();
AliInfo(Form("Changing Phi-distribution to run %d",fRunNumber));
SetOADBandPeriod();
SetPhiDist();
SetQvectorDist();
}
if (fUseMCRP) {
AliAODMCHeader *headerH = dynamic_cast<AliAODMCHeader*>(aod->GetList()->FindObject(AliAODMCHeader::StdBranchName()));
if (headerH) fRP = headerH->GetReactionPlaneAngle();
}
esdEP = header->GetEventplaneP();
if(!esdEP) return; // protection against missing EP branch (nanoAODs)
esdEP->Reset();
Int_t maxID = 0;
TObjArray* tracklist = GetAODTracksAndMaxID(aod,maxID);
if (fSaveTrackContribution) {
esdEP->GetQContributionXArray()->Set(maxID+1);
esdEP->GetQContributionYArray()->Set(maxID+1);
esdEP->GetQContributionXArraysub1()->Set(maxID+1);
esdEP->GetQContributionYArraysub1()->Set(maxID+1);
esdEP->GetQContributionXArraysub2()->Set(maxID+1);
esdEP->GetQContributionYArraysub2()->Set(maxID+1);
}
const int NT = tracklist->GetEntries();
if (NT>4){
// qvector full event
fQVector = new TVector2(GetQ(esdEP,tracklist));
fEventplaneQ = fQVector->Phi()/2;
// q vector subevents
GetQsub(qq1, qq2, tracklist, esdEP);
fQsub1 = new TVector2(qq1);
fQsub2 = new TVector2(qq2);
fQsubRes = (fQsub1->Phi()/2 - fQsub2->Phi()/2);
esdEP->SetQVector(fQVector);
esdEP->SetEventplaneQ(fEventplaneQ);
esdEP->SetQsub(fQsub1,fQsub2);
esdEP->SetQsubRes(fQsubRes);
fHOutEventplaneQ->Fill(fEventplaneQ);
fHOutsub1sub2->Fill(fQsub1->Phi()/2.,fQsub2->Phi()/2.);
fHOutNTEPRes->Fill(NT,fQsubRes);
if (fUseMCRP) fHOutDiff->Fill(fEventplaneQ, fRP);
for (int iter = 0; iter<NT;iter++){
AliAODTrack* track = dynamic_cast<AliAODTrack*> (tracklist->At(iter));
if (track) {
float delta = track->Phi()-fEventplaneQ;
while (delta < 0) delta += TMath::Pi();
while (delta > TMath::Pi()) delta -= TMath::Pi();
fHOutPTPsi->Fill(track->Pt(),delta);
fHOutPhi->Fill(track->Phi());
fHOutPhiCorr->Fill(track->Phi(),GetPhiWeight(track));
}
}
AliAODTrack* trmax = dynamic_cast<AliAODTrack*>(aod->GetTrack(0));
if(!trmax) AliFatal("Not a standard AOD");
for (int iter = 1; iter<NT;iter++){
AliAODTrack* track = dynamic_cast<AliAODTrack*> (tracklist->At(iter));
if (track && (track->Pt() > trmax->Pt())) trmax = track;
}
fHOutleadPTPsi->Fill(trmax->Phi(),fEventplaneQ);
}
delete tracklist;
tracklist = 0;
}
}
else {
printf(" Analysis Input not known!\n\n ");
return;
}
PostData(1, fOutputList);
}
//________________________________________________________________________
void AliEPSelectionTask::Terminate(Option_t */*option*/)
{
// Terminate analysis
}
//__________________________________________________________________________
TVector2 AliEPSelectionTask::GetQ(AliEventplane* EP, TObjArray* tracklist)
{
// Get the Q vector
TVector2 mQ;
float mQx=0, mQy=0;
AliVTrack* track;
Double_t weight;
Int_t idtemp = -1;
// get recentering values
Double_t mean[2], rms[2];
Recenter(0, mean);
Recenter(1, rms);
int nt = tracklist->GetEntries();
for (int i=0; i<nt; i++){
weight = 1;
track = dynamic_cast<AliVTrack*> (tracklist->At(i));
if (track) {
weight = GetWeight(track);
if (fSaveTrackContribution){
idtemp = track->GetID();
if ((fAnalysisInput.CompareTo("AOD")==0) && (fAODfilterbit == 128)) idtemp = idtemp*(-1) - 1;
EP->GetQContributionXArray()->AddAt(weight*cos(2*track->Phi())/rms[0],idtemp);
EP->GetQContributionYArray()->AddAt(weight*sin(2*track->Phi())/rms[1],idtemp);
}
mQx += (weight*cos(2*track->Phi())/rms[0]);
mQy += (weight*sin(2*track->Phi())/rms[1]);
}
}
mQ.Set(mQx-(mean[0]/rms[0]), mQy-(mean[1]/rms[1]));
return mQ;
}
//________________________________________________________________________
void AliEPSelectionTask::GetQsub(TVector2 &Q1, TVector2 &Q2, TObjArray* tracklist,AliEventplane* EP)
{
// Get Qsub
TVector2 mQ[2];
float mQx1=0, mQy1=0, mQx2=0, mQy2=0;
Double_t weight;
// get recentering values
Double_t mean[2], rms[2];
Recenter(0, mean);
Recenter(1, rms);
AliVTrack* track;
TRandom2 rn = 0;
int nt = tracklist->GetEntries();
int trackcounter1=0, trackcounter2=0;
int idtemp = 0;
if (fSplitMethod == AliEPSelectionTask::kRandom){
for (Int_t i = 0; i < nt; i++) {
weight = 1;
track = dynamic_cast<AliVTrack*> (tracklist->At(i));
if (!track) continue;
weight = GetWeight(track);
idtemp = track->GetID();
if ((fAnalysisInput.CompareTo("AOD")==0) && (fAODfilterbit == 128)) idtemp = idtemp*(-1) - 1;
// This loop splits the track set into 2 random subsets
if( trackcounter1 < int(nt/2.) && trackcounter2 < int(nt/2.)){
float random = rn.Rndm();
if(random < .5){
mQx1 += (weight*cos(2*track->Phi())/rms[0]);
mQy1 += (weight*sin(2*track->Phi())/rms[1]);
if (fSaveTrackContribution){
EP->GetQContributionXArraysub1()->AddAt(weight*cos(2*track->Phi())/rms[0],idtemp);
EP->GetQContributionYArraysub1()->AddAt(weight*sin(2*track->Phi())/rms[1],idtemp);
}
trackcounter1++;
}
else {
mQx2 += (weight*cos(2*track->Phi())/rms[0]);
mQy2 += (weight*sin(2*track->Phi())/rms[1]);
if (fSaveTrackContribution){
EP->GetQContributionXArraysub2()->AddAt(weight*cos(2*track->Phi())/rms[0],idtemp);
EP->GetQContributionYArraysub2()->AddAt(weight*sin(2*track->Phi())/rms[1],idtemp);
}
trackcounter2++;
}
}
else if( trackcounter1 >= int(nt/2.)){
mQx2 += (weight*cos(2*track->Phi())/rms[0]);
mQy2 += (weight*sin(2*track->Phi())/rms[1]);
if (fSaveTrackContribution){
EP->GetQContributionXArraysub2()->AddAt(weight*cos(2*track->Phi())/rms[0],idtemp);
EP->GetQContributionYArraysub2()->AddAt(weight*sin(2*track->Phi())/rms[1],idtemp);
}
trackcounter2++;
}
else {
mQx1 += (weight*cos(2*track->Phi())/rms[0]);
mQy1 += (weight*sin(2*track->Phi())/rms[1]);
if (fSaveTrackContribution){
EP->GetQContributionXArraysub1()->AddAt(weight*cos(2*track->Phi())/rms[0],idtemp);
EP->GetQContributionYArraysub1()->AddAt(weight*sin(2*track->Phi())/rms[1],idtemp);
}
trackcounter1++;
}
}
} else if (fSplitMethod == AliEPSelectionTask::kEta) {
for (Int_t i = 0; i < nt; i++) {
weight = 1;
track = dynamic_cast<AliVTrack*> (tracklist->At(i));
if (!track) continue;
weight = GetWeight(track);
Double_t eta = track->Eta();
idtemp = track->GetID();
if ((fAnalysisInput.CompareTo("AOD")==0) && (fAODfilterbit == 128)) idtemp = idtemp*(-1) - 1;
if (eta > fEtaGap/2.) {
mQx1 += (weight*cos(2*track->Phi())/rms[0]);
mQy1 += (weight*sin(2*track->Phi())/rms[1]);
if (fSaveTrackContribution){
EP->GetQContributionXArraysub1()->AddAt(weight*cos(2*track->Phi())/rms[0],idtemp);
EP->GetQContributionYArraysub1()->AddAt(weight*sin(2*track->Phi())/rms[1],idtemp);
}
} else if (eta < -1.*fEtaGap/2.) {
mQx2 += (weight*cos(2*track->Phi())/rms[0]);
mQy2 += (weight*sin(2*track->Phi())/rms[1]);
if (fSaveTrackContribution){
EP->GetQContributionXArraysub2()->AddAt(weight*cos(2*track->Phi())/rms[0],idtemp);
EP->GetQContributionYArraysub2()->AddAt(weight*sin(2*track->Phi())/rms[1],idtemp);
}
}
}
} else if (fSplitMethod == AliEPSelectionTask::kCharge) {
for (Int_t i = 0; i < nt; i++) {
weight = 1;
track = dynamic_cast<AliVTrack*> (tracklist->At(i));
if (!track) continue;
weight = GetWeight(track);
Short_t cha = track->Charge();
idtemp = track->GetID();
if ((fAnalysisInput.CompareTo("AOD")==0) && (fAODfilterbit == 128)) idtemp = idtemp*(-1) - 1;
if (cha > 0) {
mQx1 += (weight*cos(2*track->Phi())/rms[0]);
mQy1 += (weight*sin(2*track->Phi())/rms[1]);
if (fSaveTrackContribution){
EP->GetQContributionXArraysub1()->AddAt(weight*cos(2*track->Phi())/rms[0],idtemp);
EP->GetQContributionYArraysub1()->AddAt(weight*sin(2*track->Phi())/rms[1],idtemp);
}
} else if (cha < 0) {
mQx2 += (weight*cos(2*track->Phi())/rms[0]);
mQy2 += (weight*sin(2*track->Phi())/rms[1]);
if (fSaveTrackContribution){
EP->GetQContributionXArraysub2()->AddAt(weight*cos(2*track->Phi())/rms[0],idtemp);
EP->GetQContributionYArraysub2()->AddAt(weight*sin(2*track->Phi())/rms[1],idtemp);
}
}
}
} else {
printf("plane resolution determination method not available!\n\n ");
return;
}
// apply recenetering
mQ[0].Set(mQx1-(mean[0]/rms[0]), mQy1-(mean[1]/rms[1]));
mQ[1].Set(mQx2-(mean[0]/rms[0]), mQy2-(mean[1]/rms[1]));
Q1 = mQ[0];
Q2 = mQ[1];
}
//________________________________________________________________________
void AliEPSelectionTask::SetPersonalESDtrackCuts(AliESDtrackCuts* trackcuts){
if(fESDtrackCuts){
delete fESDtrackCuts;
fESDtrackCuts = 0;
}
if (fAnalysisInput.CompareTo("AOD")==0){
AliInfo("ESD track cuts not possible for AOD analysis; please use SetPersonalAODtrackCuts(); using TPC only track cuts");
fUsercuts = kFALSE;
SetTrackType("TPC");
return;
}
fUsercuts = kTRUE;
fESDtrackCuts = trackcuts;
}
//________________________________________________________________________
void AliEPSelectionTask::SetPersonalAODtrackCuts(UInt_t filterbit, Float_t etalow, Float_t etaup, Float_t ptlow, Float_t ptup, Int_t ntpc){
if(fESDtrackCuts){
delete fESDtrackCuts;
fESDtrackCuts = 0;
}
if (fAnalysisInput.CompareTo("ESD")==0){
AliInfo("AOD track cuts not possible for ESD analysis; please use SetPersonalESDtrackCuts(); using TPC only track cuts");
fUsercuts = kFALSE;
SetTrackType("TPC");
return;
}
fUsercuts = kTRUE;
fESDtrackCuts = new AliESDtrackCuts();
fESDtrackCuts->SetPtRange(ptlow,ptup);
fESDtrackCuts->SetMinNClustersTPC(ntpc);
fESDtrackCuts->SetEtaRange(etalow,etaup);
fAODfilterbit = filterbit;
}
//_____________________________________________________________________________
void AliEPSelectionTask::SetTrackType(TString tracktype){
fTrackType = tracktype;
if (!fUsercuts) {
if (fTrackType.CompareTo("GLOBAL")==0){
fESDtrackCuts = AliESDtrackCuts::GetStandardITSTPCTrackCuts2010(kTRUE);
fAODfilterbit = 32;
}
if (fTrackType.CompareTo("TPC")==0){
fESDtrackCuts = AliESDtrackCuts::GetStandardTPCOnlyTrackCuts();
fAODfilterbit = 128;
}
fESDtrackCuts->SetPtRange(0.15,20.);
fESDtrackCuts->SetEtaRange(-0.8,0.8);
}
}
//________________________________________________________________________
Double_t AliEPSelectionTask::GetWeight(TObject* track1)
{
Double_t ptweight=1;
AliVTrack* track = dynamic_cast<AliVTrack*>(track1);
if (fUsePtWeight && track) {
if (track->Pt()<2) ptweight=track->Pt();
else ptweight=2;
}
return ptweight*GetPhiWeight(track);
}
//________________________________________________________________________
Double_t AliEPSelectionTask::GetPhiWeight(TObject* track1)
{
Double_t phiweight=1;
AliVTrack* track = dynamic_cast<AliVTrack*>(track1);
TH1F *phiDist = 0x0;
if(track) phiDist = SelectPhiDist(track);
if (fUsePhiWeight && phiDist && track) {
Double_t nParticles = phiDist->Integral();
Double_t nPhibins = phiDist->GetNbinsX();
Double_t Phi = track->Phi();
while (Phi<0) Phi += TMath::TwoPi();
while (Phi>TMath::TwoPi()) Phi -= TMath::TwoPi();
Double_t PhiDistValue = phiDist->GetBinContent(1+TMath::FloorNint((track->Phi())*nPhibins/TMath::TwoPi()));
if (PhiDistValue > 0) phiweight = nParticles/nPhibins/PhiDistValue;
}
return phiweight;
}
//________________________________________________________________________
void AliEPSelectionTask::Recenter(Int_t var, Double_t * values)
{
if (fUseRecentering && fQDist[0] && fQDist[1] && fCentrality!=-1.) {
Int_t centbin = fQDist[0]->FindBin(fCentrality);
if(var==0) { // fill mean
values[0] = fQDist[0]->GetBinContent(centbin);
values[1] = fQDist[1]->GetBinContent(centbin);
}
else if(var==1) { // fill rms
values[0] = fQDist[0]->GetBinError(centbin);
values[1] = fQDist[1]->GetBinError(centbin);
// protection against division by zero
if(values[0]==0.0) values[0]=1.0;
if(values[1]==0.0) values[1]=1.0;
}
}
else { //default (no recentering)
values[0] = var;
values[1] = var;
}
return;
}
//__________________________________________________________________________
void AliEPSelectionTask::SetPhiDist()
{
if(!fUserphidist && (fPeriod.CompareTo("LHC10h") == 0 || fPeriod.CompareTo("LHC11h") == 0)) { // if it's already set and custom class is required, we use the one provided by the user
if (fPeriod.CompareTo("LHC10h")==0)
{
fPhiDist[0] = (TH1F*) fEPContainer->GetObject(fRunNumber, "Default");}
else if(fPeriod.CompareTo("LHC11h")==0){
Int_t runbin=fHruns->FindBin(fRunNumber);
if (fHruns->GetBinContent(runbin) > 1){
fSparseDist->GetAxis(0)->SetRange(runbin,runbin);
}
else if(fHruns->GetBinContent(runbin) < 2){
fSparseDist->GetAxis(0)->SetRange(1,2901); // not calibrated run, use integrated phi-weights
AliInfo("Using integrated Phi-weights for this run");
}
for (Int_t i = 0; i<4 ;i++)
{
if(fPhiDist[i]){
delete fPhiDist[i];
fPhiDist[i] = 0x0;
}
if(i == 0){
fSparseDist->GetAxis(1)->SetRange(1,1); // neg charge
fSparseDist->GetAxis(2)->SetRange(1,1);} // neg eta
if(i == 1){
fSparseDist->GetAxis(1)->SetRange(2,2); // pos charge
fSparseDist->GetAxis(2)->SetRange(1,1);} // neg eta
if(i == 2){
fSparseDist->GetAxis(1)->SetRange(1,1); // neg charge
fSparseDist->GetAxis(2)->SetRange(2,2);} // pos eta
if(i == 3){
fSparseDist->GetAxis(1)->SetRange(2,2); // pos charge
fSparseDist->GetAxis(2)->SetRange(2,2);} // pos eta
fPhiDist[i] = (TH1F*)fSparseDist->Projection(3); // Projection on Phi
fPhiDist[i]->SetName(Form("phidist%d%d",i,fRunNumber));
fSparseDist->GetAxis(1)->SetRange(1,2); // reset axes
fSparseDist->GetAxis(2)->SetRange(1,2);
}
fSparseDist->GetAxis(0)->SetRange(1,2901);// reset run axis
}
if (!fPhiDist[0]) AliFatal(Form("Cannot find OADB phi distribution for run %d", fRunNumber));
}
if (fPeriod.CompareTo("LHC10h")==0 || fUserphidist){
Bool_t emptybins;
int iter = 0;
while (iter<3){
emptybins = kFALSE;
for (int i=1; i<fPhiDist[0]->GetNbinsX(); i++){
if (!((fPhiDist[0]->GetBinContent(i))>0)) {
emptybins = kTRUE;
}
}
if (emptybins) {
cout << "empty bins - rebinning!" << endl;
fPhiDist[0]->Rebin();
iter++;
}
else iter = 3;
}
if (emptybins) {
AliError("After Maximum of rebinning still empty Phi-bins!!!");
}
}
if (fPeriod.CompareTo("LHC10h") != 0 && fPeriod.CompareTo("LHC11h") != 0 && !fUserphidist){
AliInfo("No Phi-weights available. All Phi weights set to 1");
SetUsePhiWeight(kFALSE);
}
}
//__________________________________________________________________________
void AliEPSelectionTask::SetQvectorDist()
{
if(!fUseRecentering) return;
AliInfo(Form("Setting q vector distributions"));
fQDist[0] = (TProfile*) fQxContainer->GetObject(fRunNumber, "Default");
fQDist[1] = (TProfile*) fQyContainer->GetObject(fRunNumber, "Default");
if (!fQDist[0] || !fQDist[1]) {
AliError(Form("Cannot find OADB q-vector distributions for run %d. Using default values (mean=0,rms=1).", fRunNumber));
return;
}
Bool_t emptybins;
int iter = 0;
while (iter<3){
emptybins = kFALSE;
for (int i=1; i<=fQDist[0]->GetNbinsX()-2; i++){
if (!((fQDist[0]->GetBinEntries(i))>0)) {
emptybins = kTRUE;
}
}
if (emptybins) {
cout << "empty bins - rebinning!" << endl;
fQDist[0]->Rebin();
fQDist[1]->Rebin();
iter++;
}
else iter = 3;
}
if (emptybins) {
AliError("After Maximum of rebinning still empty Qxy-bins!!!");
}
}
//__________________________________________________________________________
void AliEPSelectionTask::SetPersonalPhiDistribution(const char* infilename, char* listname)
{
fUserphidist = kTRUE;
TFile f(infilename);
TObject* list = f.Get(listname);
fPhiDist[0] = (TH1F*)list->FindObject("fHOutPhi");
if (!fPhiDist[0]) AliFatal("Phi Distribution not found!!!");
f.Close();
}
//_________________________________________________________________________
TObjArray* AliEPSelectionTask::GetAODTracksAndMaxID(AliAODEvent* aod, Int_t& maxid)
{
TObjArray *acctracks = new TObjArray();
AliAODTrack *tr = 0;
Int_t maxid1 = 0;
Int_t maxidtemp = -1;
Float_t ptlow = 0;
Float_t ptup = 0;
Float_t etalow = 0;
Float_t etaup = 0;
fESDtrackCuts->GetPtRange(ptlow,ptup);
fESDtrackCuts->GetEtaRange(etalow,etaup);
Int_t ntpc = fESDtrackCuts->GetMinNClusterTPC();
for (Int_t i = 0; i < aod->GetNumberOfTracks() ; i++){
tr = dynamic_cast<AliAODTrack*>(aod->GetTrack(i));
if(!tr) AliFatal("Not a standard AOD");
maxidtemp = tr->GetID();
if(maxidtemp < 0 && fAODfilterbit != 128) continue;
if(maxidtemp > -1 && fAODfilterbit == 128) continue;
if (fAODfilterbit == 128) maxidtemp = maxidtemp*(-1) - 1;
if (maxidtemp > maxid1) maxid1 = maxidtemp;
if(tr->TestFilterBit(fAODfilterbit) && tr->Pt() < ptup && tr->Pt() > ptlow && tr->Eta() < etaup && tr->Eta() > etalow && tr->GetTPCNcls() > ntpc){
acctracks->Add(tr);
}
}
maxid = maxid1;
return acctracks;
}
//_________________________________________________________________________
void AliEPSelectionTask::SetOADBandPeriod()
{
TString oadbfilename;
if (fRunNumber >= 136851 && fRunNumber <= 139515) // LHC10h
{fPeriod = "LHC10h";
if (!fUserphidist) { // if it's already set and custom class is required, we use the one provided by the user
if (fAnalysisInput.CompareTo("AOD")==0){
oadbfilename = (Form("%s/COMMON/EVENTPLANE/data/epphidist.aod.root", AliAnalysisManager::GetOADBPath()));
} else if (fAnalysisInput.CompareTo("ESD")==0){
oadbfilename = (Form("%s/COMMON/EVENTPLANE/data/epphidist.root", AliAnalysisManager::GetOADBPath()));
}
TFile foadb(oadbfilename);
if(!foadb.IsOpen()) AliFatal(Form("Cannot open OADB file %s", oadbfilename.Data()));
AliInfo("Using Standard OADB");
fEPContainer = (AliOADBContainer*) foadb.Get("epphidist");
if (!fEPContainer) AliFatal("Cannot fetch OADB container for EP selection");
foadb.Close();
}
}
if (fRunNumber >= 166529 && fRunNumber <= 170593) // LHC11h
{fPeriod = "LHC11h";
if (!fUserphidist) {
// if it's already set and custom class is required, we use the one provided by the user
oadbfilename = (Form("%s/COMMON/EVENTPLANE/data/epphidist2011.root", AliAnalysisManager::GetOADBPath()));
TFile *foadb = TFile::Open(oadbfilename);
if(!foadb->IsOpen()) AliFatal(Form("Cannot open OADB file %s", oadbfilename.Data()));
AliInfo("Using Standard OADB");
fSparseDist = (THnSparse*) foadb->Get("Default");
if (!fSparseDist) AliFatal("Cannot fetch OADB container for EP selection");
foadb->Close();
if(!fHruns){
fHruns = (TH1F*)fSparseDist->Projection(0); //projection on run axis;
fHruns->SetName("runsHisto");
}
}
if(fUseRecentering) {
oadbfilename = (Form("%s/COMMON/EVENTPLANE/data/eprecentering.root", AliAnalysisManager::GetOADBPath()));
TFile *foadb = TFile::Open(oadbfilename);
if(!foadb->IsOpen()) AliFatal(Form("Cannot open OADB file %s", oadbfilename.Data()));
AliInfo("Using Standard OADB");
fQxContainer = (AliOADBContainer*) foadb->Get("eprecentering.Qx");
fQyContainer = (AliOADBContainer*) foadb->Get("eprecentering.Qy");
if (!fQxContainer || !fQyContainer) AliFatal("Cannot fetch OADB container for EP recentering");
foadb->Close();
}
}
}
//_________________________________________________________________________
TH1F* AliEPSelectionTask::SelectPhiDist(AliVTrack *track)
{
if (fPeriod.CompareTo("LHC10h")==0 || fUserphidist) return fPhiDist[0];
else if(fPeriod.CompareTo("LHC11h")==0)
{
if (track->Charge() < 0)
{
if(track->Eta() < 0.) return fPhiDist[0];
else if (track->Eta() > 0.) return fPhiDist[2];
}
else if (track->Charge() > 0)
{
if(track->Eta() < 0.) return fPhiDist[1];
else if (track->Eta() > 0.) return fPhiDist[3];
}
}
return 0;
}
TObjArray* AliEPSelectionTask::GetTracksForLHC11h(AliESDEvent* esd)
{
// Need to do this hack beacuse only this type of TPC only tracks in AOD is available and one type of Phi-weights is used
TObjArray *acctracks = new TObjArray();
acctracks->SetOwner(kTRUE);
const AliESDVertex *vtxSPD = esd->GetPrimaryVertexSPD();
Float_t ptlow = 0;
Float_t ptup = 0;
Float_t etalow = 0;
Float_t etaup = 0;
fESDtrackCuts->GetPtRange(ptlow,ptup);
fESDtrackCuts->GetEtaRange(etalow,etaup);