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dc740de4 | 1 | /* $Id$ */ |
2 | ||
79ab56b9 | 3 | #include "AlidNdEtaCorrectionSelector.h" |
539b6cb4 | 4 | |
5 | #include <TStyle.h> | |
6 | #include <TSystem.h> | |
7 | #include <TCanvas.h> | |
8 | #include <TParticle.h> | |
9 | #include <TParticlePDG.h> | |
ad43cff6 | 10 | #include <TH1F.h> |
539b6cb4 | 11 | |
745e836a | 12 | #include <TChain.h> |
13 | #include <TSelector.h> | |
45e97e28 | 14 | #include <TFile.h> |
745e836a | 15 | |
539b6cb4 | 16 | #include <AliLog.h> |
539b6cb4 | 17 | #include <AliTracker.h> |
fcf2fb36 | 18 | #include <AliESDVertex.h> |
19 | #include <AliESD.h> | |
20 | #include <AliESDtrack.h> | |
45e97e28 | 21 | #include <AliRunLoader.h> |
22 | #include <AliStack.h> | |
539b6cb4 | 23 | |
7584d357 | 24 | #include <AliHeader.h> |
25 | #include <AliGenEventHeader.h> | |
26 | #include <AliGenPythiaEventHeader.h> | |
27 | #include <AliGenCocktailEventHeader.h> | |
28 | ||
37dbb69e | 29 | #include "esdTrackCuts/AliESDtrackCuts.h" |
45e97e28 | 30 | #include "dNdEta/AlidNdEtaCorrection.h" |
31 | #include "AliPWG0Helper.h" | |
539b6cb4 | 32 | |
79ab56b9 | 33 | ClassImp(AlidNdEtaCorrectionSelector) |
539b6cb4 | 34 | |
fcf2fb36 | 35 | AlidNdEtaCorrectionSelector::AlidNdEtaCorrectionSelector() : |
16e24ca3 | 36 | AliSelectorRL(), |
539b6cb4 | 37 | fEsdTrackCuts(0), |
406eb63e | 38 | fdNdEtaCorrection(0), |
ad43cff6 | 39 | fPIDParticles(0), |
40 | fPIDTracks(0), | |
61385583 | 41 | fClustersITSPos(0), |
42 | fClustersTPCPos(0), | |
43 | fClustersITSNeg(0), | |
44 | fClustersTPCNeg(0), | |
406eb63e | 45 | fSignMode(0) |
539b6cb4 | 46 | { |
79ab56b9 | 47 | // |
539b6cb4 | 48 | // Constructor. Initialization of pointers |
79ab56b9 | 49 | // |
539b6cb4 | 50 | } |
51 | ||
79ab56b9 | 52 | AlidNdEtaCorrectionSelector::~AlidNdEtaCorrectionSelector() |
539b6cb4 | 53 | { |
79ab56b9 | 54 | // |
55 | // Destructor | |
56 | // | |
539b6cb4 | 57 | |
58 | // histograms are in the output list and deleted when the output | |
59 | // list is deleted by the TSelector dtor | |
60 | } | |
61 | ||
ad43cff6 | 62 | Bool_t AlidNdEtaCorrectionSelector::SignOK(TParticlePDG* particle) |
406eb63e | 63 | { |
64 | // returns if a particle with this sign should be counted | |
65 | // this is determined by the value of fSignMode, which should have the same sign | |
66 | // as the charge | |
67 | // if fSignMode is 0 all particles are counted | |
68 | ||
ad43cff6 | 69 | if (fSignMode == 0) |
70 | return kTRUE; | |
71 | ||
72 | if (!particle) | |
73 | { | |
74 | printf("WARNING: not counting a particle that does not have a pdg particle\n"); | |
75 | return kFALSE; | |
76 | } | |
77 | ||
78 | Double_t charge = particle->Charge(); | |
79 | ||
406eb63e | 80 | if (fSignMode > 0) |
81 | if (charge < 0) | |
82 | return kFALSE; | |
83 | ||
84 | if (fSignMode < 0) | |
85 | if (charge > 0) | |
86 | return kFALSE; | |
87 | ||
88 | return kTRUE; | |
89 | } | |
90 | ||
0bd1f8a0 | 91 | void AlidNdEtaCorrectionSelector::ReadUserObjects(TTree* tree) |
92 | { | |
93 | // read the user objects, called from slavebegin and begin | |
94 | ||
95 | if (!fEsdTrackCuts && fInput) | |
96 | fEsdTrackCuts = dynamic_cast<AliESDtrackCuts*> (fInput->FindObject("AliESDtrackCuts")); | |
97 | ||
98 | if (!fEsdTrackCuts && tree) | |
99 | fEsdTrackCuts = dynamic_cast<AliESDtrackCuts*> (tree->GetUserInfo()->FindObject("AliESDtrackCuts")); | |
100 | ||
101 | if (!fEsdTrackCuts) | |
102 | AliDebug(AliLog::kError, "ERROR: Could not read EsdTrackCuts from input list."); | |
103 | } | |
104 | ||
79ab56b9 | 105 | void AlidNdEtaCorrectionSelector::Begin(TTree * tree) |
539b6cb4 | 106 | { |
107 | // The Begin() function is called at the start of the query. | |
108 | // When running with PROOF Begin() is only called on the client. | |
109 | // The tree argument is deprecated (on PROOF 0 is passed). | |
110 | ||
16e24ca3 | 111 | AliSelectorRL::Begin(tree); |
406eb63e | 112 | |
0bd1f8a0 | 113 | ReadUserObjects(tree); |
114 | ||
406eb63e | 115 | TString option = GetOption(); |
116 | AliInfo(Form("Called with option %s.", option.Data())); | |
117 | ||
118 | if (option.Contains("only-positive")) | |
119 | { | |
120 | AliInfo("Processing only positive particles."); | |
121 | fSignMode = 1; | |
122 | } | |
123 | else if (option.Contains("only-negative")) | |
124 | { | |
125 | AliInfo("Processing only negative particles."); | |
126 | fSignMode = -1; | |
127 | } | |
539b6cb4 | 128 | } |
129 | ||
79ab56b9 | 130 | void AlidNdEtaCorrectionSelector::SlaveBegin(TTree * tree) |
539b6cb4 | 131 | { |
132 | // The SlaveBegin() function is called after the Begin() function. | |
133 | // When running with PROOF SlaveBegin() is called on each slave server. | |
134 | // The tree argument is deprecated (on PROOF 0 is passed). | |
135 | ||
16e24ca3 | 136 | AliSelectorRL::SlaveBegin(tree); |
539b6cb4 | 137 | |
0bd1f8a0 | 138 | ReadUserObjects(tree); |
539b6cb4 | 139 | |
0bd1f8a0 | 140 | fdNdEtaCorrection = new AlidNdEtaCorrection("dndeta_correction", "dndeta_correction"); |
ad43cff6 | 141 | |
142 | fPIDParticles = new TH1F("pid_particles", "PID of generated primary particles", 10001, -5000.5, 5000.5); | |
143 | fPIDTracks = new TH1F("pid_tracks", "MC PID of reconstructed tracks", 10001, -5000.5, 5000.5); | |
144 | ||
145 | fClustersITSPos = new TH1F("clusters_its_pos", "clusters_its_pos", 7, -0.5, 6.5); | |
146 | fClustersTPCPos = new TH1F("clusters_tpc_pos", "clusters_tpc_pos", 160, -0.5, 159.5); | |
147 | ||
148 | fClustersITSNeg = new TH1F("clusters_its_neg", "clusters_its_neg", 7, -0.5, 6.5); | |
149 | fClustersTPCNeg = new TH1F("clusters_tpc_neg", "clusters_tpc_neg", 160, -0.5, 159.5); | |
539b6cb4 | 150 | } |
151 | ||
79ab56b9 | 152 | Bool_t AlidNdEtaCorrectionSelector::Process(Long64_t entry) |
539b6cb4 | 153 | { |
154 | // The Process() function is called for each entry in the tree (or possibly | |
155 | // keyed object in the case of PROOF) to be processed. The entry argument | |
156 | // specifies which entry in the currently loaded tree is to be processed. | |
157 | // It can be passed to either TTree::GetEntry() or TBranch::GetEntry() | |
158 | // to read either all or the required parts of the data. When processing | |
159 | // keyed objects with PROOF, the object is already loaded and is available | |
160 | // via the fObject pointer. | |
161 | // | |
162 | // This function should contain the "body" of the analysis. It can contain | |
163 | // simple or elaborate selection criteria, run algorithms on the data | |
164 | // of the event and typically fill histograms. | |
165 | ||
166 | // WARNING when a selector is used with a TChain, you must use | |
167 | // the pointer to the current TTree to call GetEntry(entry). | |
168 | // The entry is always the local entry number in the current tree. | |
16e24ca3 | 169 | // Assuming that fTree is the pointer to the TChain being processed, |
170 | // use fTree->GetTree()->GetEntry(entry). | |
539b6cb4 | 171 | |
7584d357 | 172 | AliDebug(AliLog::kDebug+1,"Processing event ...\n"); |
173 | ||
174 | ||
16e24ca3 | 175 | if (AliSelectorRL::Process(entry) == kFALSE) |
539b6cb4 | 176 | return kFALSE; |
177 | ||
b8e8168f | 178 | // check prerequesites |
179 | if (!fESD) | |
180 | { | |
181 | AliDebug(AliLog::kError, "ESD branch not available"); | |
182 | return kFALSE; | |
183 | } | |
184 | ||
dc740de4 | 185 | AliHeader* header = GetHeader(); |
186 | if (!header) | |
b8e8168f | 187 | { |
dc740de4 | 188 | AliDebug(AliLog::kError, "Header not available"); |
b8e8168f | 189 | return kFALSE; |
190 | } | |
191 | ||
d09fb536 | 192 | AliStack* stack = GetStack(); |
45e97e28 | 193 | if (!stack) |
194 | { | |
195 | AliDebug(AliLog::kError, "Stack not available"); | |
196 | return kFALSE; | |
197 | } | |
198 | ||
b8e8168f | 199 | if (!fEsdTrackCuts) |
200 | { | |
201 | AliDebug(AliLog::kError, "fESDTrackCuts not available"); | |
539b6cb4 | 202 | return kFALSE; |
b8e8168f | 203 | } |
539b6cb4 | 204 | |
45e97e28 | 205 | Bool_t vertexReconstructed = AliPWG0Helper::IsVertexReconstructed(fESD); |
745e836a | 206 | |
45e97e28 | 207 | Bool_t eventTriggered = AliPWG0Helper::IsEventTriggered(fESD); |
539b6cb4 | 208 | |
539b6cb4 | 209 | // get the MC vertex |
dc740de4 | 210 | AliGenEventHeader* genHeader = header->GenEventHeader(); |
539b6cb4 | 211 | |
212 | TArrayF vtxMC(3); | |
213 | genHeader->PrimaryVertex(vtxMC); | |
539b6cb4 | 214 | |
539b6cb4 | 215 | // loop over mc particles |
45e97e28 | 216 | Int_t nPrim = stack->GetNprimary(); |
539b6cb4 | 217 | |
45e97e28 | 218 | for (Int_t iMc = 0; iMc < nPrim; ++iMc) |
539b6cb4 | 219 | { |
45e97e28 | 220 | AliDebug(AliLog::kDebug+1, Form("MC Loop: Processing particle %d.", iMc)); |
221 | ||
222 | TParticle* particle = stack->Particle(iMc); | |
539b6cb4 | 223 | |
224 | if (!particle) | |
45e97e28 | 225 | { |
226 | AliDebug(AliLog::kError, Form("UNEXPECTED: particle with label %d not found in stack (mc loop).", iMc)); | |
539b6cb4 | 227 | continue; |
45e97e28 | 228 | } |
539b6cb4 | 229 | |
45e97e28 | 230 | if (AliPWG0Helper::IsPrimaryCharged(particle, nPrim) == kFALSE) |
539b6cb4 | 231 | continue; |
232 | ||
ad43cff6 | 233 | if (SignOK(particle->GetPDG()) == kFALSE) |
10ebe68d | 234 | continue; |
ad43cff6 | 235 | |
745e836a | 236 | Float_t eta = particle->Eta(); |
45e97e28 | 237 | Float_t pt = particle->Pt(); |
238 | ||
7584d357 | 239 | if (vertexReconstructed) { |
45e97e28 | 240 | fdNdEtaCorrection->FillParticle(vtxMC[2], eta, pt); |
7584d357 | 241 | |
ad43cff6 | 242 | if (pt > 0.1 && pt < 0.2) |
7584d357 | 243 | fPIDParticles->Fill(particle->GetPdgCode()); |
ad43cff6 | 244 | } |
45e97e28 | 245 | }// end of mc particle |
e8cb44f1 | 246 | |
539b6cb4 | 247 | // ######################################################## |
248 | // loop over esd tracks | |
249 | Int_t nTracks = fESD->GetNumberOfTracks(); | |
45e97e28 | 250 | |
406eb63e | 251 | // count the number of "good" tracks as parameter for vertex reconstruction efficiency |
45e97e28 | 252 | Int_t nGoodTracks = 0; |
539b6cb4 | 253 | for (Int_t t=0; t<nTracks; t++) |
254 | { | |
45e97e28 | 255 | AliDebug(AliLog::kDebug+1, Form("ESD Loop: Processing track %d.", t)); |
256 | ||
539b6cb4 | 257 | AliESDtrack* esdTrack = fESD->GetTrack(t); |
258 | ||
259 | // cut the esd track? | |
260 | if (!fEsdTrackCuts->AcceptTrack(esdTrack)) | |
261 | continue; | |
262 | ||
45e97e28 | 263 | nGoodTracks++; |
264 | ||
265 | // using the properties of the mc particle | |
539b6cb4 | 266 | Int_t label = TMath::Abs(esdTrack->GetLabel()); |
79ab56b9 | 267 | if (label == 0) |
539b6cb4 | 268 | { |
b8e8168f | 269 | AliDebug(AliLog::kWarning, Form("WARNING: cannot find corresponding mc part for track %d.", t)); |
539b6cb4 | 270 | continue; |
271 | } | |
539b6cb4 | 272 | |
45e97e28 | 273 | TParticle* particle = stack->Particle(label); |
274 | if (!particle) | |
275 | { | |
276 | AliDebug(AliLog::kError, Form("UNEXPECTED: particle with label %d not found in stack (track loop).", label)); | |
277 | continue; | |
278 | } | |
539b6cb4 | 279 | |
ad43cff6 | 280 | if (SignOK(particle->GetPDG()) == kFALSE) |
406eb63e | 281 | continue; |
282 | ||
45e97e28 | 283 | if (vertexReconstructed) |
ad43cff6 | 284 | { |
45e97e28 | 285 | fdNdEtaCorrection->FillParticleWhenMeasuredTrack(vtxMC[2], particle->Eta(), particle->Pt()); |
ad43cff6 | 286 | if (particle->Pt() > 0.1 && particle->Pt() < 0.2) |
7584d357 | 287 | { |
288 | fPIDTracks->Fill(particle->GetPdgCode()); | |
ad43cff6 | 289 | if (particle->GetPDG()->Charge() > 0) |
290 | { | |
291 | fClustersITSPos->Fill(esdTrack->GetITSclusters(0)); | |
292 | fClustersTPCPos->Fill(esdTrack->GetTPCclusters(0)); | |
293 | } | |
294 | else | |
295 | { | |
296 | fClustersITSNeg->Fill(esdTrack->GetITSclusters(0)); | |
297 | fClustersTPCNeg->Fill(esdTrack->GetTPCclusters(0)); | |
298 | } | |
299 | } | |
300 | } | |
539b6cb4 | 301 | } // end of track loop |
302 | ||
7584d357 | 303 | // stuff regarding the vertex reco correction and trigger bias correction |
304 | if (eventTriggered) { | |
1afae8ff | 305 | fdNdEtaCorrection->FillEventWithTrigger(vtxMC[2], nGoodTracks); |
847489f7 | 306 | if (vertexReconstructed) |
1afae8ff | 307 | fdNdEtaCorrection->FillEventWithTriggerWithReconstructedVertex(vtxMC[2], nGoodTracks); |
847489f7 | 308 | } |
45e97e28 | 309 | |
7584d357 | 310 | // getting process information |
311 | Int_t processtype = AliPWG0Helper::GetPythiaEventProcessType(header); | |
312 | AliDebug(AliLog::kDebug+1,Form(" Found pythia procces type %d", processtype)); | |
313 | ||
314 | if (processtype<0) | |
315 | AliDebug(AliLog::kError, Form("Unkown Pythia process type %d.", processtype)); | |
316 | ||
317 | fdNdEtaCorrection->FillEventAll(vtxMC[2], nGoodTracks, "INEL"); | |
318 | ||
319 | if (processtype!=92 && processtype!=93) | |
320 | fdNdEtaCorrection->FillEventAll(vtxMC[2], nGoodTracks, "NSD"); | |
321 | ||
322 | if (processtype!=92 && processtype!=93 && processtype!=94) | |
323 | fdNdEtaCorrection->FillEventAll(vtxMC[2], nGoodTracks, "ND"); | |
324 | ||
539b6cb4 | 325 | return kTRUE; |
326 | } | |
327 | ||
79ab56b9 | 328 | void AlidNdEtaCorrectionSelector::SlaveTerminate() |
539b6cb4 | 329 | { |
330 | // The SlaveTerminate() function is called after all entries or objects | |
331 | // have been processed. When running with PROOF SlaveTerminate() is called | |
332 | // on each slave server. | |
333 | ||
16e24ca3 | 334 | AliSelectorRL::SlaveTerminate(); |
539b6cb4 | 335 | |
336 | // Add the histograms to the output on each slave server | |
337 | if (!fOutput) | |
338 | { | |
b8e8168f | 339 | AliDebug(AliLog::kError, "ERROR: Output list not initialized"); |
539b6cb4 | 340 | return; |
341 | } | |
79ab56b9 | 342 | |
745e836a | 343 | fOutput->Add(fdNdEtaCorrection); |
539b6cb4 | 344 | } |
345 | ||
79ab56b9 | 346 | void AlidNdEtaCorrectionSelector::Terminate() |
539b6cb4 | 347 | { |
348 | // The Terminate() function is the last function to be called during | |
349 | // a query. It always runs on the client, it can be used to present | |
350 | // the results graphically or save the results to file. | |
351 | ||
16e24ca3 | 352 | AliSelectorRL::Terminate(); |
539b6cb4 | 353 | |
45e97e28 | 354 | fdNdEtaCorrection = dynamic_cast<AlidNdEtaCorrection*> (fOutput->FindObject("dndeta_correction")); |
ad43cff6 | 355 | if (!fdNdEtaCorrection) |
356 | { | |
357 | AliDebug(AliLog::kError, "Could not read object from output list"); | |
358 | return; | |
359 | } | |
79ab56b9 | 360 | |
45e97e28 | 361 | fdNdEtaCorrection->Finish(); |
539b6cb4 | 362 | |
406eb63e | 363 | TFile* fout = new TFile(Form("correction_map%s.root", GetOption()), "RECREATE"); |
539b6cb4 | 364 | |
0bd1f8a0 | 365 | if (fEsdTrackCuts) |
366 | fEsdTrackCuts->SaveHistograms("esd_track_cuts"); | |
45e97e28 | 367 | fdNdEtaCorrection->SaveHistograms(); |
539b6cb4 | 368 | |
369 | fout->Write(); | |
370 | fout->Close(); | |
371 | ||
45e97e28 | 372 | fdNdEtaCorrection->DrawHistograms(); |
ad43cff6 | 373 | |
0bd1f8a0 | 374 | if (fPIDParticles && fPIDTracks) |
375 | { | |
376 | new TCanvas("pidcanvas", "pidcanvas", 500, 500); | |
ad43cff6 | 377 | |
0bd1f8a0 | 378 | fPIDParticles->Draw(); |
379 | fPIDTracks->SetLineColor(2); | |
380 | fPIDTracks->Draw("SAME"); | |
ad43cff6 | 381 | |
0bd1f8a0 | 382 | TDatabasePDG* pdgDB = new TDatabasePDG; |
ad43cff6 | 383 | |
0bd1f8a0 | 384 | for (Int_t i=0; i <= fPIDParticles->GetNbinsX()+1; ++i) |
385 | if (fPIDParticles->GetBinContent(i) > 0) | |
386 | printf("PDG = %d (%s): generated: %d, reconstructed: %d, ratio: %f\n", (Int_t) fPIDParticles->GetBinCenter(i), pdgDB->GetParticle((Int_t) fPIDParticles->GetBinCenter(i))->GetName(), (Int_t) fPIDParticles->GetBinContent(i), (Int_t) fPIDTracks->GetBinContent(i), ((fPIDTracks->GetBinContent(i) > 0) ? fPIDParticles->GetBinContent(i) / fPIDTracks->GetBinContent(i) : -1)); | |
ad43cff6 | 387 | |
0bd1f8a0 | 388 | delete pdgDB; |
389 | pdgDB = 0; | |
390 | } | |
ad43cff6 | 391 | |
0bd1f8a0 | 392 | if (fClustersITSPos && fClustersITSNeg && fClustersTPCPos && fClustersTPCNeg) |
393 | { | |
394 | TCanvas* canvas = new TCanvas("clusters", "clusters", 1000, 500); | |
395 | canvas->Divide(2, 1); | |
396 | ||
397 | canvas->cd(1); | |
398 | fClustersITSPos->Draw(); | |
399 | fClustersITSNeg->SetLineColor(kRed); | |
400 | fClustersITSNeg->Draw("SAME"); | |
401 | ||
402 | canvas->cd(2); | |
403 | fClustersTPCPos->Draw(); | |
404 | fClustersTPCNeg->SetLineColor(kRed); | |
405 | fClustersTPCNeg->Draw("SAME"); | |
406 | } | |
539b6cb4 | 407 | } |