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Commit | Line | Data |
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dc740de4 | 1 | /* $Id$ */ |
2 | ||
559d0c87 | 3 | // |
4 | // Script to calculate PtvsEta correction map using the CorrectionMatrix2D class. | |
5 | // | |
6 | ||
7 | makeCorrectionPtEta(Char_t* dataDir, Int_t nRuns=20) { | |
8 | ||
9 | Char_t str[256]; | |
10 | ||
063622dc | 11 | gSystem->Load("../libPWG0base.so"); |
559d0c87 | 12 | // ######################################################## |
13 | // selection of esd tracks | |
14 | AliESDtrackCuts* esdTrackCuts = new AliESDtrackCuts(); | |
15 | esdTrackCuts->DefineHistograms(1); | |
16 | esdTrackCuts->SetMinNClustersTPC(50); | |
17 | esdTrackCuts->SetMaxChi2PerClusterTPC(3.5); | |
18 | esdTrackCuts->SetMaxCovDiagonalElements(2,2,0.5,0.5,2); | |
19 | esdTrackCuts->SetRequireTPCRefit(kTRUE); | |
20 | esdTrackCuts->SetMinNsigmaToVertex(3); | |
21 | esdTrackCuts->SetAcceptKingDaughters(kFALSE); | |
22 | AliLog::SetClassDebugLevel("AliESDtrackCuts",1); | |
23 | AliLog::SetClassDebugLevel("ESDtrackQualityCuts",1); | |
24 | ||
25 | // ######################################################## | |
26 | // definition of PtEta correction object | |
063622dc | 27 | CorrectionMatrix2D* PtEtaMap = new CorrectionMatrix2D("PtvsEta","PtvsEta",80,0.,10.,120,-2.,2.); |
28 | //PtEtaMap->SetHist("PtEta",80,0.,10.,120,-2.,2.); | |
559d0c87 | 29 | //Float_t x[]={-20., -15., -5., 0., 6., 20.}; |
30 | //Float_t y[]={-6. , -3., -1., 2., 3., 6. }; | |
31 | //PtEtaMap->SetHist("PtEta",5,x,5,y); | |
063622dc | 32 | //PtEtaMap->SetHistTitle("p_{t}","#eta"); |
559d0c87 | 33 | |
34 | ||
35 | // ######################################################## | |
36 | // get the data dir | |
37 | Char_t execDir[256]; | |
38 | sprintf(execDir,gSystem->pwd()); | |
39 | TSystemDirectory* baseDir = new TSystemDirectory(".",dataDir); | |
40 | TList* dirList = baseDir->GetListOfFiles(); | |
41 | Int_t nDirs = dirList->GetEntries(); | |
42 | // go back to the dir where this script is executed | |
43 | gSystem->cd(execDir); | |
44 | ||
45 | // ######################################################## | |
46 | // definition of used pointers | |
47 | TFile* esdFile; | |
48 | TTree* esdTree; | |
49 | TBranch* esdBranch; | |
50 | ||
51 | AliESD* esd =0; | |
52 | // ######################################################## | |
53 | // loop over runs | |
54 | Int_t nRunCounter = 0; | |
55 | for (Int_t r=0; r<nDirs; r++) { | |
56 | ||
57 | TSystemFile* presentDir = (TSystemFile*)dirList->At(r); | |
58 | if (!presentDir || !presentDir->IsDirectory()) | |
59 | continue; | |
60 | // check that the files are there | |
61 | TString currentDataDir; | |
62 | currentDataDir.Form("%s/%s",dataDir, presentDir->GetName()); | |
63 | cout << "Processing directory " << currentDataDir.Data() << endl; | |
64 | if ((!gSystem->Which(currentDataDir,"galice.root")) || | |
65 | (!gSystem->Which(currentDataDir,"AliESDs.root"))) | |
66 | continue; | |
67 | ||
68 | if (nRunCounter++ >= nRuns) | |
69 | break; | |
70 | ||
71 | cout << "run #" << nRunCounter << endl; | |
72 | ||
73 | // ######################################################### | |
74 | // setup galice and runloader | |
75 | if (gAlice) { | |
76 | delete gAlice->GetRunLoader(); | |
77 | delete gAlice; | |
78 | gAlice=0; | |
79 | } | |
80 | ||
81 | sprintf(str,"%s/galice.root",currentDataDir.Data()); | |
82 | AliRunLoader* runLoader = AliRunLoader::Open(str); | |
83 | ||
84 | runLoader->LoadgAlice(); | |
85 | gAlice = runLoader->GetAliRun(); | |
86 | runLoader->LoadKinematics(); | |
87 | runLoader->LoadHeader(); | |
88 | ||
89 | ||
90 | // ######################################################### | |
91 | // open esd file and get the tree | |
92 | ||
93 | sprintf(str,"%s/AliESDs.root",currentDataDir.Data()); | |
94 | // close it first to avoid memory leak | |
95 | if (esdFile) | |
96 | if (esdFile->IsOpen()) | |
97 | esdFile->Close(); | |
98 | ||
99 | esdFile = TFile::Open(str); | |
100 | esdTree = (TTree*)esdFile->Get("esdTree"); | |
101 | if (!esdTree) | |
102 | continue; | |
103 | esdBranch = esdTree->GetBranch("ESD"); | |
104 | esdBranch->SetAddress(&esd); | |
105 | if (!esdBranch) | |
106 | continue; | |
107 | ||
108 | // ######################################################## | |
109 | // Magnetic field | |
110 | AliTracker::SetFieldMap(gAlice->Field(),kTRUE); // kTRUE means uniform magnetic field | |
111 | //AliKalmanTrack::SetConvConst(1000/0.299792458/5.); | |
112 | ||
113 | // ######################################################## | |
114 | // getting number of events | |
115 | Int_t nEvents = (Int_t)runLoader->GetNumberOfEvents(); | |
116 | Int_t nESDEvents = esdBranch->GetEntries(); | |
117 | ||
118 | if (nEvents!=nESDEvents) { | |
119 | cout << " Different number of events from runloader and esdtree!!!" << nEvents << " / " << nESDEvents << endl; | |
120 | return; | |
121 | } | |
122 | // ######################################################## | |
123 | // loop over number of events | |
124 | cout << " looping over events..." << endl; | |
125 | for(Int_t i=0; i<nEvents; i++) { | |
126 | ||
127 | esdBranch->GetEntry(i); | |
128 | runLoader->GetEvent(i); | |
129 | ||
130 | // ######################################################## | |
131 | // get the EDS vertex | |
132 | AliESDVertex* vtxESD = esd->GetVertex(); | |
133 | ||
134 | Double_t vtx[3]; | |
135 | Double_t vtx_res[3]; | |
136 | vtxESD->GetXYZ(vtx); | |
137 | ||
138 | vtx_res[0] = vtxESD->GetXRes(); | |
139 | vtx_res[1] = vtxESD->GetYRes(); | |
140 | vtx_res[2] = vtxESD->GetZRes(); | |
141 | ||
142 | // the vertex should be reconstructed | |
143 | if (strcmp(vtxESD->GetName(),"default")==0) | |
144 | continue; | |
145 | ||
146 | // the resolution should be reasonable??? | |
147 | if (vtx_res[2]==0 || vtx_res[2]>0.1) | |
148 | continue; | |
149 | ||
150 | // ######################################################## | |
151 | // loop over mc particles | |
152 | AliStack* particleStack = runLoader->Stack(); | |
153 | Int_t nPrim = particleStack->GetNprimary(); | |
154 | ||
155 | for (Int_t i_mc=0; i_mc<nPrim; i_mc++) { | |
156 | ||
157 | TParticle* part = particleStack->Particle(i_mc); | |
158 | if (!part || strcmp(part->GetName(),"XXX")==0) | |
159 | continue; | |
160 | ||
161 | TParticlePDG* pdgPart = part->GetPDG(); | |
162 | ||
163 | Bool_t prim = kFALSE; | |
164 | // check if it's a primary particle - is there a better way ??? | |
165 | if ((part->GetFirstDaughter() >= nPrim) || (part->GetFirstDaughter()==-1)) { | |
166 | if (TMath::Abs(pdgPart->PdgCode())>10 && pdgPart->PdgCode()!=21 && strcmp(pdgPart->ParticleClass(),"Unknown")!=0) | |
167 | prim = kTRUE; | |
168 | } | |
169 | if (!prim) | |
170 | continue; | |
171 | ||
172 | if (pdgPart->Charge()==0) | |
173 | continue; | |
174 | ||
175 | if (prim) | |
176 | PtEtaMap->FillGene(part->Pt(), part->Eta()); | |
177 | ||
178 | }// end of mc particle | |
179 | ||
180 | // ######################################################## | |
181 | // loop over esd tracks | |
182 | Int_t nTracks = esd->GetNumberOfTracks(); | |
183 | for (Int_t t=0; t<nTracks; t++) { | |
184 | AliESDtrack* esdTrack = esd->GetTrack(t); | |
185 | ||
186 | // cut the esd track? | |
187 | if (!esdTrackCuts->AcceptTrack(esdTrack)) | |
188 | continue; | |
189 | ||
190 | Double_t Ptr0[3]; | |
191 | if(!esdTrack->GetPxPyPz(Ptr0)) continue; | |
192 | fTrP= new TVector3(Ptr0); | |
193 | ||
194 | PtEtaMap->FillMeas(fTrP->Pt(), fTrP->Eta()); | |
195 | ||
196 | } // end of track loop | |
197 | } // end of event loop | |
198 | } // end of run loop | |
199 | ||
063622dc | 200 | PtEtaMap->Divide(); |
201 | PtEtaMap->RemoveEdges(); | |
559d0c87 | 202 | |
203 | TFile* fout = new TFile("PtEtaCorrectionMap.root","RECREATE"); | |
204 | ||
205 | esdTrackCuts->SaveHistograms("EsdTrackCuts"); | |
206 | PtEtaMap->SaveHistograms(); | |
207 | ||
208 | fout->Write(); | |
209 | fout->Close(); | |
210 | ||
211 | } |