7 #include "AliAnalysisTask.h"
8 #include "AliAnalysisManager.h"
10 #include "AliESDEvent.h"
11 //#include "AliFlatESDEvent.h"
12 #include "AliESDtrackCuts.h"
13 #include "AliVEventHandler.h"
14 #include "AliTPCseed.h"
15 #include "AliTPCclusterMI.h"
16 #include "AliVfriendEvent.h"
17 #include "AliVfriendTrack.h"
19 #include "AliAnalysisTaskPt.h"
21 // example of an analysis task creating a p_t spectrum
22 // Authors: Panos Cristakoglou, Jan Fiete Grosse-Oetringhaus, Christian Klein-Boesing
24 ClassImp(AliAnalysisTaskPt)
26 //________________________________________________________________________
27 AliAnalysisTaskPt::AliAnalysisTaskPt(const char *name)
28 : AliAnalysisTask(name, ""), fESD(0), fESDfriend(0), fHistPt(0), fCuts(0), fEv(0), fHistQ(0), fListOut(0), fUseFriends(kFALSE), fHistNTPCCl(0), fHistNESDtracks(0), fHistNESDfriendtracks(0)
33 // Define input and output slots here
34 // Input slot #0 works with a TChain
35 DefineInput(0, TChain::Class());
36 // Output slot #0 writes into a TH1 container
37 DefineOutput(0, TList::Class());
40 //________________________________________________________________________
41 void AliAnalysisTaskPt::ConnectInputData(Option_t *)
43 // Connect ESD or AOD here
46 printf("----> AliAnalysisTaskPt::ConnectInputData\n");
47 TTree* tree = dynamic_cast<TTree*> (GetInputData(0));
49 Printf("ERROR: Could not read chain from input slot 0");
51 // Disable all branches and enable only the needed ones
52 // The next two lines are different when data produced as AliESDEvent is read
54 tree->SetBranchStatus("*", kFALSE);
55 tree->SetBranchStatus("fTracks.*", kTRUE);
58 AliVEventHandler *esdH = AliAnalysisManager::GetAnalysisManager()->GetInputEventHandler();
59 TString classInputHandler = esdH->ClassName();
61 Printf("----> AliAnalysisTaskPt: ClassName of handler = %s", classInputHandler.Data());
64 Printf("ERROR: Could not get ESDInputHandler");
66 Printf("----> AliAnalysisTaskPt::ConnectInputData Getting the event from handler %p", esdH);
67 //fESD = dynamic_cast<AliFlatESDEvent*>(esdH->GetEvent());
68 fESD = esdH->GetEvent();
70 fESDfriend = esdH->GetVFriendEvent();
74 Printf("ERROR, no ESD event");
76 if (fUseFriends && !fESDfriend) {
77 Printf("ERROR, no ESD friend");
81 Printf("fESD = %p, fESDfriend = %p", fESD, fESDfriend);
82 printf("<---- AliAnalysisTaskPt::ConnectInputData\n");
85 //________________________________________________________________________
86 void AliAnalysisTaskPt::CreateOutputObjects()
91 fListOut = new TList();
93 fListOut->SetName("listHistos");
95 fHistPt = new TH1F("fHistPt", "P_{T} distribution", 15, 0.1, 3.1);
96 fHistPt->GetXaxis()->SetTitle("P_{T} (GeV/c)");
97 fHistPt->GetYaxis()->SetTitle("dN/dP_{T} (c/GeV)");
98 fHistPt->SetMarkerStyle(kFullCircle);
100 fHistQ = new TH1F("fHistQ", "TPC clusters: Q distribution", 1000, 0, 10000);
101 fHistQ->GetXaxis()->SetTitle("Q");
102 fHistQ->GetYaxis()->SetTitle("dN/dQ");
103 fHistQ->SetMarkerStyle(kFullCircle);
105 fHistNTPCCl = new TH1F("fHistNTPCCl", "Number of TPC clusters", 160, -0.5, 159.5);
106 fHistNTPCCl->GetXaxis()->SetTitle("n. TPC Cl.");
107 fHistNTPCCl->GetYaxis()->SetTitle("dN/d(n. TPC Cl)");
108 fHistNTPCCl->SetMarkerStyle(kFullCircle);
110 fHistNESDtracks = new TH1F("fHistNESDtracks", "Number of ESD friend tracks", 1000, -0.5, 999.5);
111 fHistNESDtracks->GetXaxis()->SetTitle("n. ESD friend tracks");
112 fHistNESDtracks->GetYaxis()->SetTitle("dN/d(n. ESD friend tracks)");
113 fHistNESDtracks->SetMarkerStyle(kFullCircle);
115 fHistNESDfriendtracks = new TH1F("fHistNESDfriendtracks", "Number of ESD tracks", 1000, -0.5, 999.5);
116 fHistNESDfriendtracks->GetXaxis()->SetTitle("n. ESD tracks");
117 fHistNESDfriendtracks->GetYaxis()->SetTitle("dN/d(n. ESD tracks)");
118 fHistNESDfriendtracks->SetMarkerStyle(kFullCircle);
120 fListOut->Add(fHistPt);
121 fListOut->Add(fHistQ);
122 fListOut->Add(fHistNTPCCl);
123 fListOut->Add(fHistNESDtracks);
124 fListOut->Add(fHistNESDfriendtracks);
126 PostData(0, fListOut);
128 fCuts = AliESDtrackCuts::GetStandardITSTPCTrackCuts2010(1);
131 //________________________________________________________________________
132 void AliAnalysisTaskPt::Exec(Option_t *)
135 // Called for each event
138 Printf("ERROR: fESD not available");
142 Printf("ERROR: fESDfriend not available");
148 Int_t nESDtracks = fESD->GetNumberOfTracks();
149 Int_t nESDfriendtracks = 0;
150 if (fUseFriends) nESDfriendtracks = fESDfriend->GetNumberOfTracks();
151 Printf("There are %d tracks in this event", nESDtracks);
152 Printf("... and there are %d friends in this event", nESDfriendtracks);
154 fHistNESDtracks->Fill(nESDtracks);
155 fHistNESDfriendtracks->Fill(nESDfriendtracks);
157 // Track loop to fill a pT spectrum
158 for (Int_t iTracks = 0; iTracks < nESDtracks; iTracks++) {
159 Printf("Checking track %d: Note that with Flat, the GetTrack is not yet implemented!!!", iTracks);
160 const AliVTrack* track = dynamic_cast<AliVTrack*>(fESD->GetTrack(iTracks));
162 Printf("ERROR: Could not receive track %d", iTracks);
165 Printf("track %d has pt = %f", iTracks, track->Pt());
166 fHistPt->Fill(track->Pt());
167 fHistNTPCCl->Fill(track->GetTPCNcls());
173 for (Int_t iFriend = 0; iFriend < nESDfriendtracks; iFriend++) {
174 //Printf("Getting friend %d", iFriend);
175 const AliVfriendTrack* friendTrack = fESDfriend->GetTrack(iFriend);
177 Printf("ERROR: Could not receive track %d", iFriend);
182 Int_t err = friendTrack->GetTPCseed( seed );
184 Printf("Found TPC seed" );
185 for (Int_t irow = 0; irow < 160; irow++){
186 AliTPCclusterMI* cluMI = seed.GetClusterPointer(irow);
188 Printf("Found cluster at row %d", irow);
189 Float_t q = cluMI->GetQ();
194 Printf("Row %d does not contain clusters", irow);
199 //Printf("Schade... seed is %p", seed);
205 PostData(0, fListOut);
209 //________________________________________________________________________
210 void AliAnalysisTaskPt::Terminate(Option_t *)
212 // Draw result to the screen
213 // Called once at the end of the query
215 Printf("Terminate called: fESD = %p", fESD);
217 fListOut = dynamic_cast<TList*> (GetOutputData(0));
220 fHistPt = dynamic_cast<TH1F*>(fListOut->FindObject("fHistPt"));
222 Printf("ERROR: fHistPt not available");
226 TCanvas *c1 = new TCanvas("AliAnalysisTaskPt","Pt",10,10,510,510);
227 c1->cd(1)->SetLogy();
228 fHistPt->DrawCopy("E");
231 Printf("In Terminate: no TList found");