7 #include "AliAnalysisTask.h"
8 #include "AliAnalysisManager.h"
10 #include "AliESDEvent.h"
11 #include "AliVVevent.h"
12 #include "AliVVtrack.h"
13 #include "AliESDtrackCuts.h"
14 #include "AliVEventHandler.h"
15 #include "AliTPCseed.h"
16 #include "AliTPCclusterMI.h"
17 #include "AliVVfriendEvent.h"
18 #include "AliVVfriendTrack.h"
20 #include "AliAnalysisTaskPt.h"
22 // example of an analysis task creating a p_t spectrum
23 // Authors: Panos Cristakoglou, Jan Fiete Grosse-Oetringhaus, Christian Klein-Boesing
25 ClassImp(AliAnalysisTaskPt)
27 //________________________________________________________________________
28 AliAnalysisTaskPt::AliAnalysisTaskPt(const char *name)
29 : AliAnalysisTask(name, ""), fESD(0), fESDfriend(0), fHistPt(0), fCuts(0), fEv(0), fHistQ(0), fListOut(0), fUseFriends(kFALSE), fHistNTPCCl(0), fHistNESDtracks(0), fHistNESDfriendtracks(0)
34 // Define input and output slots here
35 // Input slot #0 works with a TChain
36 DefineInput(0, TChain::Class());
37 // Output slot #0 writes into a TH1 container
38 DefineOutput(0, TList::Class());
41 //________________________________________________________________________
42 void AliAnalysisTaskPt::ConnectInputData(Option_t *)
44 // Connect ESD or AOD here
47 printf("----> AliAnalysisTaskPt::ConnectInputData\n");
48 TTree* tree = dynamic_cast<TTree*> (GetInputData(0));
50 Printf("ERROR: Could not read chain from input slot 0");
52 // Disable all branches and enable only the needed ones
53 // The next two lines are different when data produced as AliESDEvent is read
55 tree->SetBranchStatus("*", kFALSE);
56 tree->SetBranchStatus("fTracks.*", kTRUE);
59 AliVEventHandler *esdH = AliAnalysisManager::GetAnalysisManager()->GetInputEventHandler();
62 Printf("ERROR: Could not get ESDInputHandler");
64 Printf("----> AliAnalysisTaskPt::ConnectInputData Getting the event from handler %p", esdH);
65 //fESD = dynamic_cast<AliESDEvent*>(esdH->GetEvent());
66 fESD = esdH->GetVVEvent();
68 fESDfriend = esdH->GetVVFriendEvent();
72 Printf("ERROR, no ESD event");
74 if (fUseFriends && !fESDfriend) {
75 Printf("ERROR, no ESD friend");
79 Printf("fESD = %p, fESDfriend = %p", fESD, fESDfriend);
80 printf("<---- AliAnalysisTaskPt::ConnectInputData\n");
83 //________________________________________________________________________
84 void AliAnalysisTaskPt::CreateOutputObjects()
89 fListOut = new TList();
91 fListOut->SetName("listHistos");
93 fHistPt = new TH1F("fHistPt", "P_{T} distribution", 15, 0.1, 3.1);
94 fHistPt->GetXaxis()->SetTitle("P_{T} (GeV/c)");
95 fHistPt->GetYaxis()->SetTitle("dN/dP_{T} (c/GeV)");
96 fHistPt->SetMarkerStyle(kFullCircle);
98 fHistQ = new TH1F("fHistQ", "TPC clusters: Q distribution", 1000, 0, 10000);
99 fHistQ->GetXaxis()->SetTitle("Q");
100 fHistQ->GetYaxis()->SetTitle("dN/dQ");
101 fHistQ->SetMarkerStyle(kFullCircle);
103 fHistNTPCCl = new TH1F("fHistNTPCCl", "Number of TPC clusters", 160, -0.5, 159.5);
104 fHistNTPCCl->GetXaxis()->SetTitle("n. TPC Cl.");
105 fHistNTPCCl->GetYaxis()->SetTitle("dN/d(n. TPC Cl)");
106 fHistNTPCCl->SetMarkerStyle(kFullCircle);
108 fHistNESDtracks = new TH1F("fHistNESDtracks", "Number of ESD friend tracks", 1000, -0.5, 999.5);
109 fHistNESDtracks->GetXaxis()->SetTitle("n. ESD friend tracks");
110 fHistNESDtracks->GetYaxis()->SetTitle("dN/d(n. ESD friend tracks)");
111 fHistNESDtracks->SetMarkerStyle(kFullCircle);
113 fHistNESDfriendtracks = new TH1F("fHistNESDfriendtracks", "Number of ESD tracks", 1000, -0.5, 999.5);
114 fHistNESDfriendtracks->GetXaxis()->SetTitle("n. ESD tracks");
115 fHistNESDfriendtracks->GetYaxis()->SetTitle("dN/d(n. ESD tracks)");
116 fHistNESDfriendtracks->SetMarkerStyle(kFullCircle);
118 fListOut->Add(fHistPt);
119 fListOut->Add(fHistQ);
120 fListOut->Add(fHistNTPCCl);
121 fListOut->Add(fHistNESDtracks);
122 fListOut->Add(fHistNESDfriendtracks);
124 PostData(0, fListOut);
126 fCuts = AliESDtrackCuts::GetStandardITSTPCTrackCuts2010(1);
129 //________________________________________________________________________
130 void AliAnalysisTaskPt::Exec(Option_t *)
133 // Called for each event
136 Printf("ERROR: fESD not available");
140 Printf("ERROR: fESDfriend not available");
146 Int_t nESDtracks = fESD->GetNumberOfTracks();
147 Int_t nESDfriendtracks = 0;
148 if (fUseFriends) nESDfriendtracks = fESDfriend->GetNumberOfTracks();
149 Printf("There are %d tracks in this event", nESDtracks);
150 Printf("... and there are %d friends in this event", nESDfriendtracks);
152 fHistNESDtracks->Fill(nESDtracks);
153 fHistNESDfriendtracks->Fill(nESDfriendtracks);
155 // Track loop to fill a pT spectrum
156 for (Int_t iTracks = 0; iTracks < nESDtracks; iTracks++) {
157 Printf("Checking track %d: Note that with Flat, the GetTrack is not yet implemented!!!", iTracks);
158 AliVVtrack* track = fESD->GetVVTrack(iTracks);
160 Printf("ERROR: Could not receive track %d", iTracks);
163 Printf("track %d has pt = %f", iTracks, track->GetPt());
164 fHistPt->Fill(track->GetPt());
165 fHistNTPCCl->Fill(track->GetTPCNcls());
171 for (Int_t iFriend = 0; iFriend < nESDfriendtracks; iFriend++) {
172 //Printf("Getting friend %d", iFriend);
173 const AliVVfriendTrack* friendTrack = fESDfriend->GetTrack(iFriend);
175 Printf("ERROR: Could not receive track %d", iFriend);
180 Int_t err = friendTrack->GetTPCseed( seed );
182 Printf("Found TPC seed" );
183 for (Int_t irow = 0; irow < 160; irow++){
184 AliTPCclusterMI* cluMI = seed.GetClusterPointer(irow);
186 Printf("Found cluster at row %d", irow);
187 Float_t q = cluMI->GetQ();
192 Printf("Row %d does not contain clusters", irow);
197 //Printf("Schade... seed is %p", seed);
203 PostData(0, fListOut);
207 //________________________________________________________________________
208 void AliAnalysisTaskPt::Terminate(Option_t *)
210 // Draw result to the screen
211 // Called once at the end of the query
213 Printf("Terminate called: fESD = %p", fESD);
215 fListOut = dynamic_cast<TList*> (GetOutputData(0));
218 fHistPt = dynamic_cast<TH1F*>(fListOut->FindObject("fHistPt"));
220 Printf("ERROR: fHistPt not available");
224 TCanvas *c1 = new TCanvas("AliAnalysisTaskPt","Pt",10,10,510,510);
225 c1->cd(1)->SetLogy();
226 fHistPt->DrawCopy("E");
229 Printf("In Terminate: no TList found");