Fixed a bug on retrieving TPC inner param
[u/mrichter/AliRoot.git] / ANALYSIS / AliPhysicsSelection.cxx
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61899827 1/* $Id: AliPhysicsSelection.cxx 35782 2009-10-22 11:54:31Z jgrosseo $ */
2
3/**************************************************************************
4 * Copyright(c) 1998-2009, ALICE Experiment at CERN, All rights reserved. *
5 * *
6 * Author: The ALICE Off-line Project. *
7 * Contributors are mentioned in the code where appropriate. *
8 * *
9 * Permission to use, copy, modify and distribute this software and its *
10 * documentation strictly for non-commercial purposes is hereby granted *
11 * without fee, provided that the above copyright notice appears in all *
12 * copies and that both the copyright notice and this permission notice *
13 * appear in the supporting documentation. The authors make no claims *
14 * about the suitability of this software for any purpose. It is *
15 * provided "as is" without express or implied warranty. *
16 **************************************************************************/
17
18//-------------------------------------------------------------------------
19// Implementation of Class AliPhysicsSelection
528640ed 20// This class selects collision candidates from data runs, applying selection cuts on triggers
21// and background rejection based on the content of the ESD
22//
23// Usage:
24//
a2ce3799 25// Create the object:
528640ed 26// fPhysicsSelection = new AliPhysicsSelection;
a2ce3799 27//
28// For MC data, call
29// fPhysicsSelection->SetAnalyzeMC()
528640ed 30//
31// To check if an event is a collision candidate, use:
32// fPhysicsSelection->IsCollisionCandidate(fESD)
33//
34// After processing save the resulting histograms to a file with (a folder physics_selection
35// will be created that contains the histograms):
36// fPhysicsSelection->SaveHistograms("physics_selection")
37//
38// To print statistics after processing use:
39// fPhysicsSelection->Print();
40//
61899827 41// Origin: Jan Fiete Grosse-Oetringhaus, CERN
42//-------------------------------------------------------------------------
43
44#include <Riostream.h>
45#include <TH1F.h>
46#include <TH2F.h>
47#include <TList.h>
48#include <TIterator.h>
49#include <TDirectory.h>
296dd262 50#include <TObjArray.h>
61899827 51
52#include <AliPhysicsSelection.h>
53
54#include <AliTriggerAnalysis.h>
55#include <AliLog.h>
56
57#include <AliESDEvent.h>
58
59ClassImp(AliPhysicsSelection)
60
61AliPhysicsSelection::AliPhysicsSelection() :
296dd262 62 AliAnalysisCuts("AliPhysicsSelection", "AliPhysicsSelection"),
63 fCurrentRun(-1),
a2ce3799 64 fMC(kFALSE),
296dd262 65 fCollTrigClasses(),
66 fBGTrigClasses(),
67 fTriggerAnalysis(),
68 fBackgroundIdentification(0),
61899827 69 fHistStatistics(0),
70 fHistBunchCrossing(0)
71{
72 // constructor
73
296dd262 74 fCollTrigClasses.SetOwner(1);
75 fBGTrigClasses.SetOwner(1);
76 fTriggerAnalysis.SetOwner(1);
77
61899827 78 AliLog::SetClassDebugLevel("AliPhysicsSelection", AliLog::kWarning);
79}
80
81AliPhysicsSelection::~AliPhysicsSelection()
82{
83 // destructor
84
296dd262 85 fCollTrigClasses.Delete();
86 fBGTrigClasses.Delete();
87 fTriggerAnalysis.Delete();
61899827 88
89 if (fHistStatistics)
90 {
91 delete fHistStatistics;
92 fHistStatistics = 0;
93 }
94
95 if (fHistBunchCrossing)
96 {
97 delete fHistBunchCrossing;
98 fHistBunchCrossing = 0;
99 }
100}
296dd262 101
102Bool_t AliPhysicsSelection::CheckTriggerClass(const AliESDEvent* aEsd, const char* trigger) const
103{
104 // checks if the given trigger class(es) are found for the current event
105 // format of trigger: +TRIGGER1 -TRIGGER2
106 // requires TRIGGER1 and rejects TRIGGER2
107
108 TString str(trigger);
109 TObjArray* tokens = str.Tokenize(" ");
110
111 for (Int_t i=0; i < tokens->GetEntries(); i++)
112 {
113 TString str2(((TObjString*) tokens->At(i))->String());
114
115 if (str2[0] != '+' && str2[0] != '-')
116 AliFatal(Form("Invalid trigger syntax: %s", trigger));
117
118 Bool_t flag = (str2[0] == '+');
119
120 str2.Remove(0, 1);
121
122 if (flag && !aEsd->IsTriggerClassFired(str2))
123 {
124 AliDebug(AliLog::kDebug, Form("Rejecting event because trigger class %s is not present", str2.Data()));
125 delete tokens;
126 return kFALSE;
127 }
128 if (!flag && aEsd->IsTriggerClassFired(str2))
129 {
130 AliDebug(AliLog::kDebug, Form("Rejecting event because trigger class %s is present", str2.Data()));
131 delete tokens;
132 return kFALSE;
133 }
134 }
135
136 delete tokens;
137 return kTRUE;
138}
61899827 139
140Bool_t AliPhysicsSelection::IsCollisionCandidate(const AliESDEvent* aEsd)
141{
142 // checks if the given event is a collision candidate
143
95e6f4ec 144 if (fCurrentRun != aEsd->GetRunNumber())
145 if (!Initialize(aEsd->GetRunNumber()))
146 AliFatal(Form("Could not initialize for run %d", aEsd->GetRunNumber()));
147
61899827 148 const AliESDHeader* esdHeader = aEsd->GetHeader();
149 if (!esdHeader)
150 {
151 AliError("ESD Header could not be retrieved");
152 return kFALSE;
153 }
154
a2ce3799 155 // check event type; should be PHYSICS = 7 for data and 0 for MC
156 if (!fMC)
157 {
158 if (esdHeader->GetEventType() != 7)
159 return kFALSE;
160 }
161 else
162 {
163 if (esdHeader->GetEventType() != 0)
164 AliFatal(Form("Invalid event type for MC: %d", esdHeader->GetEventType()));
165 }
61899827 166
296dd262 167 Bool_t accept = kFALSE;
168
169 Int_t count = fCollTrigClasses.GetEntries() + fBGTrigClasses.GetEntries();
170 for (Int_t i=0; i < count; i++)
61899827 171 {
296dd262 172 const char* triggerClass = 0;
173 if (i < fCollTrigClasses.GetEntries())
174 triggerClass = ((TObjString*) fCollTrigClasses.At(i))->String();
175 else
176 triggerClass = ((TObjString*) fBGTrigClasses.At(i - fCollTrigClasses.GetEntries()))->String();
61899827 177
296dd262 178 AliDebug(AliLog::kDebug, Form("Processing trigger class %s", triggerClass));
61899827 179
296dd262 180 AliTriggerAnalysis* triggerAnalysis = static_cast<AliTriggerAnalysis*> (fTriggerAnalysis.At(i));
61899827 181
296dd262 182 triggerAnalysis->FillTriggerClasses(aEsd);
61899827 183
296dd262 184 if (CheckTriggerClass(aEsd, triggerClass))
185 {
186 triggerAnalysis->FillHistograms(aEsd);
187
188 fHistStatistics->Fill(1, i);
61899827 189
296dd262 190 Int_t fastOR = triggerAnalysis->SPDFiredChips(aEsd, 0);
191 Bool_t v0A = triggerAnalysis->IsOfflineTriggerFired(aEsd, AliTriggerAnalysis::kV0A);
192 Bool_t v0C = triggerAnalysis->IsOfflineTriggerFired(aEsd, AliTriggerAnalysis::kV0C);
f4ca8f20 193 Bool_t v0ABG = triggerAnalysis->IsOfflineTriggerFired(aEsd, AliTriggerAnalysis::kV0ABG);
194 Bool_t v0CBG = triggerAnalysis->IsOfflineTriggerFired(aEsd, AliTriggerAnalysis::kV0CBG);
195 Bool_t v0BG = v0ABG || v0CBG;
61899827 196
296dd262 197 if (fastOR > 0)
198 fHistStatistics->Fill(2, i);
199 if (fastOR > 1)
200 fHistStatistics->Fill(3, i);
201
202 if (v0A)
203 fHistStatistics->Fill(4, i);
204 if (v0C)
205 fHistStatistics->Fill(5, i);
f4ca8f20 206 if (v0ABG)
296dd262 207 fHistStatistics->Fill(6, i);
f4ca8f20 208 if (v0CBG)
209 fHistStatistics->Fill(7, i);
296dd262 210
17ba346c 211 if (fastOR > 1 && !v0BG)
f4ca8f20 212 fHistStatistics->Fill(8, i);
17ba346c 213
214 if ((fastOR > 0 || v0A || v0C) && !v0BG)
215 fHistStatistics->Fill(9, i);
296dd262 216
217 if (fastOR > 0 && (v0A || v0C) && !v0BG)
17ba346c 218 fHistStatistics->Fill(10, i);
296dd262 219
220 if (v0A && v0C && !v0BG)
17ba346c 221 fHistStatistics->Fill(11, i);
296dd262 222
223 if (fastOR > 1 || (fastOR > 0 && (v0A || v0C)) || (v0A && v0C))
224 {
225 if (!v0BG)
226 {
17ba346c 227 fHistStatistics->Fill(12, i);
61899827 228
296dd262 229 if (fBackgroundIdentification && !fBackgroundIdentification->IsSelected(const_cast<AliESDEvent*> (aEsd)))
230 {
231 AliDebug(AliLog::kDebug, "Rejecting event because of background identification");
17ba346c 232 fHistStatistics->Fill(13, i);
296dd262 233 }
234 else
235 {
236 AliDebug(AliLog::kDebug, "Accepted event for histograms");
237
17ba346c 238 fHistStatistics->Fill(14, i);
296dd262 239 fHistBunchCrossing->Fill(aEsd->GetBunchCrossNumber(), i);
52d4048c 240 if (i < fCollTrigClasses.GetEntries())
296dd262 241 accept = kTRUE;
242 }
243 }
244 else
245 AliDebug(AliLog::kDebug, "Rejecting event because of V0 BG flag");
246 }
247 else
248 AliDebug(AliLog::kDebug, "Rejecting event because trigger condition is not fulfilled");
249 }
250 }
251
252 if (accept)
253 AliDebug(AliLog::kDebug, "Accepted event as collision candidate");
61899827 254
296dd262 255 return accept;
61899827 256}
a2ce3799 257
258Int_t AliPhysicsSelection::GetTriggerScheme(UInt_t /* runNumber */)
259{
260 // returns the current trigger scheme (classes that are accepted/rejected)
261
262 if (fMC)
263 return 0;
264
265 // TODO dependent on run number
266 return 1;
267}
61899827 268
269Bool_t AliPhysicsSelection::Initialize(UInt_t runNumber)
270{
271 // initializes the object for the given run
272 // TODO having the run number here and parameters hardcoded is clearly temporary, a way needs to be found to have a CDB-like configuration also for analysis
273
29e8486e 274 Bool_t oldStatus = TH1::AddDirectoryStatus();
275 TH1::AddDirectory(kFALSE);
276
a2ce3799 277 Int_t triggerScheme = GetTriggerScheme(runNumber);
278
279 if (fCurrentRun != -1 && triggerScheme != GetTriggerScheme(fCurrentRun))
280 AliFatal("Processing several runs with different trigger schemes is not supported");
296dd262 281
61899827 282 AliInfo(Form("Initializing for run %d", runNumber));
283
a2ce3799 284 Bool_t firstTime = kFALSE;
285 if (fCurrentRun == -1)
286 {
287 // initialize first time
288 fCurrentRun = runNumber;
289 firstTime = kTRUE;
290 }
61899827 291
a2ce3799 292 if (firstTime)
293 {
294 switch (triggerScheme)
295 {
296 case 0:
297 fCollTrigClasses.Add(new TObjString(""));
298 break;
299
300 case 1:
301 fCollTrigClasses.Add(new TObjString("+CINT1B-ABCE-NOPF-ALL"));
302 fBGTrigClasses.Add(new TObjString("+CINT1A-ABCE-NOPF-ALL"));
303 fBGTrigClasses.Add(new TObjString("+CINT1C-ABCE-NOPF-ALL"));
304 fBGTrigClasses.Add(new TObjString("+CINT1-E-NOPF-ALL"));
305 break;
306
307 default:
308 AliFatal(Form("Unsupported trigger scheme %d", triggerScheme));
309 }
61899827 310
a2ce3799 311 Int_t count = fCollTrigClasses.GetEntries() + fBGTrigClasses.GetEntries();
312
313 for (Int_t i=0; i<count; i++)
314 {
315 AliTriggerAnalysis* triggerAnalysis = new AliTriggerAnalysis;
316 triggerAnalysis->SetAnalyzeMC(fMC);
317 triggerAnalysis->EnableHistograms();
318 triggerAnalysis->SetSPDGFOThreshhold(1);
319 fTriggerAnalysis.Add(triggerAnalysis);
320 }
321
322 if (fHistStatistics)
323 delete fHistStatistics;
296dd262 324
a2ce3799 325 fHistStatistics = new TH2F("fHistStatistics", "fHistStatistics;;", 14, 0.5, 14.5, count, -0.5, -0.5 + count);
326
327 Int_t n = 1;
328 fHistStatistics->GetXaxis()->SetBinLabel(n++, "Triggered");
329 fHistStatistics->GetXaxis()->SetBinLabel(n++, "FO >= 1");
330 fHistStatistics->GetXaxis()->SetBinLabel(n++, "FO >= 2");
331 fHistStatistics->GetXaxis()->SetBinLabel(n++, "V0A");
332 fHistStatistics->GetXaxis()->SetBinLabel(n++, "V0C");
333 fHistStatistics->GetXaxis()->SetBinLabel(n++, "V0A BG");
334 fHistStatistics->GetXaxis()->SetBinLabel(n++, "V0C BG");
335 fHistStatistics->GetXaxis()->SetBinLabel(n++, "FO >= 2 &!V0 BG");
336 fHistStatistics->GetXaxis()->SetBinLabel(n++, "(FO >= 1 | V0A | V0C) & !V0 BG");
337 fHistStatistics->GetXaxis()->SetBinLabel(n++, "FO >= 1 & (V0A | V0C) & !V0 BG");
338 fHistStatistics->GetXaxis()->SetBinLabel(n++, "V0A & V0C & !V0 BG");
339 fHistStatistics->GetXaxis()->SetBinLabel(n++, "(FO >= 2 | (FO >= 1 & (V0A | V0C)) | (V0A & V0C)) & !V0 BG");
340 fHistStatistics->GetXaxis()->SetBinLabel(n++, "Background identification");
341 fHistStatistics->GetXaxis()->SetBinLabel(n++, "Accepted");
342
343 if (fHistBunchCrossing)
344 delete fHistBunchCrossing;
345
346 fHistBunchCrossing = new TH2F("fHistBunchCrossing", "fHistBunchCrossing;bunch crossing number;", 4000, -0.5, 3999.5, count, -0.5, -0.5 + count);
347
348 n = 1;
349 for (Int_t i=0; i < fCollTrigClasses.GetEntries(); i++)
350 {
351 fHistStatistics->GetYaxis()->SetBinLabel(n, ((TObjString*) fCollTrigClasses.At(i))->String());
352 fHistBunchCrossing->GetYaxis()->SetBinLabel(n, ((TObjString*) fCollTrigClasses.At(i))->String());
353 n++;
354 }
355 for (Int_t i=0; i < fBGTrigClasses.GetEntries(); i++)
356 {
357 fHistStatistics->GetYaxis()->SetBinLabel(n, ((TObjString*) fBGTrigClasses.At(i))->String());
358 fHistBunchCrossing->GetYaxis()->SetBinLabel(n, ((TObjString*) fBGTrigClasses.At(i))->String());
359 n++;
360 }
361 }
362
363 Int_t count = fCollTrigClasses.GetEntries() + fBGTrigClasses.GetEntries();
296dd262 364 for (Int_t i=0; i<count; i++)
61899827 365 {
a2ce3799 366 AliTriggerAnalysis* triggerAnalysis = static_cast<AliTriggerAnalysis*> (fTriggerAnalysis.At(i));
367
296dd262 368 switch (runNumber)
369 {
a2ce3799 370 case 104315:
296dd262 371 case 104316:
372 case 104320:
a2ce3799 373 case 104321:
296dd262 374 case 104439:
375 triggerAnalysis->SetV0TimeOffset(7.5);
376 break;
a2ce3799 377 default:
378 triggerAnalysis->SetV0TimeOffset(0);
296dd262 379 }
f4ca8f20 380 }
381
29e8486e 382 TH1::AddDirectory(oldStatus);
383
61899827 384 return kTRUE;
385}
386
387void AliPhysicsSelection::Print(Option_t* /* option */) const
388{
389 // print the configuration
390
a2ce3799 391 Printf("Configuration initialized for run %d (MC: %d):", fCurrentRun, fMC);
61899827 392
296dd262 393 Printf("Collision trigger classes:");
394 for (Int_t i=0; i < fCollTrigClasses.GetEntries(); i++)
395 Printf("%s", ((TObjString*) fCollTrigClasses.At(i))->String().Data());
61899827 396
296dd262 397 Printf("Background trigger classes:");
398 for (Int_t i=0; i < fBGTrigClasses.GetEntries(); i++)
399 Printf("%s", ((TObjString*) fBGTrigClasses.At(i))->String().Data());
400
401 AliTriggerAnalysis* triggerAnalysis = dynamic_cast<AliTriggerAnalysis*> (fTriggerAnalysis.At(0));
61899827 402
296dd262 403 if (triggerAnalysis)
404 {
405 if (triggerAnalysis->GetV0TimeOffset() > 0)
406 Printf("V0 time offset active: %.2f ns", triggerAnalysis->GetV0TimeOffset());
61899827 407
296dd262 408 Printf("\nTotal available events:");
528640ed 409
296dd262 410 triggerAnalysis->PrintTriggerClasses();
411 }
528640ed 412
b43e01ed 413 if (fHistStatistics)
414 {
415 Printf("\nSelection statistics for first collision trigger:");
416
417 Printf("Total events with correct trigger class: %d", (Int_t) fHistStatistics->GetBinContent(1, 1));
17ba346c 418 Printf("Selected collision candidates: %d", (Int_t) fHistStatistics->GetBinContent(fHistStatistics->GetXaxis()->FindBin("Accepted"), 1));
419 }
420
421 if (fHistBunchCrossing)
422 {
423 Printf("\nBunch crossing statistics:");
424
425 for (Int_t i=1; i<=fHistBunchCrossing->GetNbinsY(); i++)
426 {
427 TString str;
428 str.Form("Trigger %s has accepted events in the bunch crossings: ", fHistBunchCrossing->GetYaxis()->GetBinLabel(i));
429
430 for (Int_t j=1; j<=fHistBunchCrossing->GetNbinsX(); j++)
431 if (fHistBunchCrossing->GetBinContent(j, i) > 0)
432 str += Form("%d, ", (Int_t) fHistBunchCrossing->GetXaxis()->GetBinCenter(j));
433
434 Printf("%s", str.Data());
435 }
436
437 for (Int_t j=1; j<=fHistBunchCrossing->GetNbinsX(); j++)
438 {
439 Int_t count = 0;
440 for (Int_t i=1; i<=fHistBunchCrossing->GetNbinsY(); i++)
441 {
442 if (fHistBunchCrossing->GetBinContent(j, i) > 0)
443 count++;
444 }
445 if (count > 1)
446 Printf("WARNING: Bunch crossing %d has more than one trigger class active. Check BPTX functioning for this run!", (Int_t) fHistBunchCrossing->GetXaxis()->GetBinCenter(j));
447 }
b43e01ed 448 }
61899827 449}
450
451Long64_t AliPhysicsSelection::Merge(TCollection* list)
452{
453 // Merge a list of AliMultiplicityCorrection objects with this (needed for
454 // PROOF).
455 // Returns the number of merged objects (including this).
456
457 if (!list)
458 return 0;
459
460 if (list->IsEmpty())
461 return 1;
462
463 TIterator* iter = list->MakeIterator();
464 TObject* obj;
17ba346c 465
61899827 466 // collections of all histograms
467 const Int_t nHists = 9;
468 TList collections[nHists];
469
470 Int_t count = 0;
471 while ((obj = iter->Next())) {
472
473 AliPhysicsSelection* entry = dynamic_cast<AliPhysicsSelection*> (obj);
474 if (entry == 0)
475 continue;
17ba346c 476
477 collections[0].Add(&(entry->fTriggerAnalysis));
478 if (entry->fHistStatistics)
479 collections[1].Add(entry->fHistStatistics);
480 if (entry->fHistBunchCrossing)
481 collections[2].Add(entry->fHistBunchCrossing);
296dd262 482 if (entry->fBackgroundIdentification)
17ba346c 483 collections[3].Add(entry->fBackgroundIdentification);
61899827 484
485 count++;
486 }
487
17ba346c 488 fTriggerAnalysis.Merge(&collections[0]);
489 if (fHistStatistics)
490 fHistStatistics->Merge(&collections[1]);
491 if (fHistBunchCrossing)
492 fHistBunchCrossing->Merge(&collections[2]);
296dd262 493 if (fBackgroundIdentification)
17ba346c 494 fBackgroundIdentification->Merge(&collections[3]);
61899827 495
496 delete iter;
497
498 return count+1;
499}
500
501void AliPhysicsSelection::SaveHistograms(const char* folder) const
502{
503 // write histograms to current directory
504
505 if (!fHistStatistics)
506 return;
507
508 if (folder)
509 {
510 gDirectory->mkdir(folder);
511 gDirectory->cd(folder);
512 }
513
514 fHistStatistics->Write();
515 fHistBunchCrossing->Write();
516
296dd262 517 Int_t count = fCollTrigClasses.GetEntries() + fBGTrigClasses.GetEntries();
518 for (Int_t i=0; i < count; i++)
519 {
520 TString triggerClass = "trigger_histograms_";
521 if (i < fCollTrigClasses.GetEntries())
522 triggerClass += ((TObjString*) fCollTrigClasses.At(i))->String();
523 else
524 triggerClass += ((TObjString*) fBGTrigClasses.At(i - fCollTrigClasses.GetEntries()))->String();
61899827 525
296dd262 526 gDirectory->mkdir(triggerClass);
527 gDirectory->cd(triggerClass);
61899827 528
296dd262 529 static_cast<AliTriggerAnalysis*> (fTriggerAnalysis.At(i))->SaveHistograms();
530
531 gDirectory->cd("..");
532 }
533
534 if (fBackgroundIdentification)
535 {
536 gDirectory->mkdir("background_identification");
537 gDirectory->cd("background_identification");
538
539 fBackgroundIdentification->GetOutput()->Write();
540
541 gDirectory->cd("..");
542 }
61899827 543
544 if (folder)
545 gDirectory->cd("..");
546}