]>
Commit | Line | Data |
---|---|---|
46f589c2 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-2007, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
16 | /* | |
17 | * Analysis task of the pt analysis on EMCal-triggered events | |
18 | * | |
19 | * Author: Markus Fasel | |
20 | */ | |
21 | ||
22 | #include <map> | |
23 | #include <cstring> | |
24 | #include <iostream> | |
25 | #include <memory> | |
26 | #include <vector> | |
27 | #include <string> | |
28 | #include <sstream> | |
29 | ||
30 | #include <TDirectory.h> | |
31 | #include <TH1.h> | |
32 | #include <THashList.h> | |
33 | #include <TKey.h> | |
34 | #include <TMath.h> | |
35 | #include <TObjArray.h> | |
36 | #include <TString.h> | |
37 | ||
38 | #include "AliESDEvent.h" | |
39 | #include "AliESDInputHandler.h" | |
40 | #include "AliESDtrack.h" | |
41 | #include "AliESDVertex.h" | |
42 | ||
43 | #include "AliEMCalHistoContainer.h" | |
44 | #include "AliAnalysisTaskPtEMCalTrigger.h" | |
45 | ||
46 | ClassImp(EMCalTriggerPtAnalysis::AliAnalysisTaskPtEMCalTrigger) | |
47 | ||
48 | namespace EMCalTriggerPtAnalysis { | |
49 | ||
50 | //______________________________________________________________________________ | |
51 | AliAnalysisTaskPtEMCalTrigger::AliAnalysisTaskPtEMCalTrigger(): | |
52 | AliAnalysisTaskSE(), | |
53 | fResults(NULL), | |
54 | fHistos(NULL), | |
55 | fListTrackCuts(NULL) | |
56 | { | |
57 | /* | |
58 | * Dummy constructor, initialising the values with default (NULL) values | |
59 | */ | |
60 | } | |
61 | ||
62 | //______________________________________________________________________________ | |
63 | AliAnalysisTaskPtEMCalTrigger::AliAnalysisTaskPtEMCalTrigger(const char *name): | |
64 | AliAnalysisTaskSE(name), | |
65 | fResults(NULL), | |
66 | fHistos(NULL), | |
67 | fListTrackCuts(NULL) | |
68 | { | |
69 | /* | |
70 | * Main constructor, setting default values for eta and zvertex cut | |
71 | */ | |
72 | DefineOutput(1, TList::Class()); | |
73 | ||
74 | fListTrackCuts = new TList; | |
75 | fListTrackCuts->SetOwner(false); | |
76 | ||
77 | // Set default cuts | |
78 | fEtaRange.SetLimits(-0.8, 0.8); | |
79 | ||
80 | } | |
81 | ||
82 | //______________________________________________________________________________ | |
83 | AliAnalysisTaskPtEMCalTrigger::~AliAnalysisTaskPtEMCalTrigger(){ | |
84 | /* | |
85 | * Destructor, deleting output | |
86 | */ | |
87 | //if(fTrackSelection) delete fTrackSelection; | |
88 | if(fHistos) delete fHistos; | |
89 | if(fListTrackCuts) delete fListTrackCuts; | |
90 | } | |
91 | ||
92 | //______________________________________________________________________________ | |
93 | void AliAnalysisTaskPtEMCalTrigger::UserCreateOutputObjects(){ | |
94 | /* | |
95 | * Create the list of output objects and define the histograms. | |
96 | * Also adding the track cuts to the list of histograms. | |
97 | */ | |
98 | fResults = new TList; | |
99 | fResults->SetOwner(); | |
100 | ||
101 | fHistos = new AliEMCalHistoContainer("PtEMCalTriggerHistograms"); | |
102 | fHistos->ReleaseOwner(); | |
103 | ||
104 | std::map<std::string, std::string> triggerCombinations; | |
105 | const char *triggernames[6] = {"MinBias", "EMCJHigh", "EMCJLow", "EMCGHigh", "EMCGLow", "NoEMCal"}; | |
106 | // Define axes for the trigger correlation histogram | |
107 | const TAxis *triggeraxis[5]; memset(triggeraxis, 0, sizeof(const TAxis *) * 5); | |
108 | const char *binlabels[2] = {"OFF", "ON"}; | |
109 | TAxis mytrgaxis[5]; | |
110 | for(int itrg = 0; itrg < 5; ++itrg){ | |
111 | DefineAxis(mytrgaxis[itrg], triggernames[itrg], triggernames[itrg], 2, -0.5, 1.5, binlabels); | |
112 | triggeraxis[itrg] = mytrgaxis+itrg; | |
113 | } | |
114 | // Define names and titles for different triggers in the histogram container | |
115 | triggerCombinations.insert(std::pair<std::string,std::string>(triggernames[0], "min. bias events")); | |
116 | triggerCombinations.insert(std::pair<std::string,std::string>(triggernames[1], "jet-triggered events (high threshold)")); | |
117 | triggerCombinations.insert(std::pair<std::string,std::string>(triggernames[2], "jet-triggered events (low threshold)")); | |
118 | triggerCombinations.insert(std::pair<std::string,std::string>(triggernames[3], "jet-triggered events (high threshold)")); | |
119 | triggerCombinations.insert(std::pair<std::string,std::string>(triggernames[4], "jet-triggered events (low threshold)")); | |
120 | triggerCombinations.insert(std::pair<std::string,std::string>(triggernames[5], "non-EMCal-triggered events (low threshold)")); | |
121 | // Define axes for the pt histogram | |
122 | // Dimensions: | |
123 | // 1. pt | |
124 | // 2. eta | |
125 | // 3. phi | |
126 | // 4. vertex | |
127 | // 5. pileup (0 = all events, 1 = after pileup rejection) | |
128 | // 6. track cuts (0 = no cuts; 1 = after std cuts) | |
129 | TArrayD ptbinning, zvertexBinning, etabinning, pileupaxis(3); | |
130 | pileupaxis[0] = -0.5; pileupaxis[1] = 0.5; pileupaxis[2] = 1.5; | |
131 | CreateDefaultPtBinning(ptbinning); | |
132 | CreateDefaultZVertexBinning(zvertexBinning); | |
133 | CreateDefaultEtaBinning(etabinning); | |
134 | TAxis htrackaxes[6]; | |
135 | DefineAxis(htrackaxes[0], "pt", "p_{t} (GeV/c)", ptbinning); | |
136 | DefineAxis(htrackaxes[1], "eta", "#eta", etabinning); | |
137 | DefineAxis(htrackaxes[2], "phi", "#phi", 100, 0, 2 * TMath::Pi()); | |
138 | DefineAxis(htrackaxes[3], "zvertex", "z_{V} (cm)", zvertexBinning); | |
139 | DefineAxis(htrackaxes[4], "pileup", "Pileup rejection", 2, -0.5, 1.5); | |
140 | DefineAxis(htrackaxes[5], "trackcuts", "Track Cuts", (fListTrackCuts ? fListTrackCuts->GetEntries() : 0) + 1, -0.5, (fListTrackCuts ? fListTrackCuts->GetEntries() : 0) + 0.5); | |
141 | const TAxis *trackaxes[6]; | |
142 | for(int iaxis = 0; iaxis < 6; ++iaxis) trackaxes[iaxis] = htrackaxes + iaxis; | |
143 | try{ | |
144 | for(std::map<std::string,std::string>::iterator it = triggerCombinations.begin(); it != triggerCombinations.end(); ++it){ | |
145 | const std::string name = it->first, &title = it->second; | |
146 | // Create event-based histogram | |
147 | fHistos->CreateTH2(Form("hEventHist%s", name.c_str()), Form("Event-based data for %s events; pileup rejection; z_{V} (cm)", title.c_str()), pileupaxis, zvertexBinning); | |
148 | // Create track-based histogram | |
149 | fHistos->CreateTHnSparse(Form("hTrackHist%s", name.c_str()), Form("Track-based data for %s events", title.c_str()), 6, trackaxes); | |
150 | } | |
151 | fHistos->CreateTHnSparse("hEventTriggers", "Trigger type per event", 5, triggeraxis); | |
152 | } catch (HistoContainerContentException &e){ | |
153 | std::stringstream errormessage; | |
154 | errormessage << "Creation of histogram failed: " << e.what(); | |
155 | AliError(errormessage.str().c_str()); | |
156 | } | |
157 | fResults->Add(fHistos->GetListOfHistograms()); | |
158 | if(fListTrackCuts && fListTrackCuts->GetEntries()){ | |
159 | TIter cutIter(fListTrackCuts); | |
160 | AliESDtrackCuts *cutObject(NULL); | |
161 | while((cutObject = dynamic_cast<AliESDtrackCuts *>(cutIter()))){ | |
162 | cutObject->DefineHistograms(); | |
163 | fResults->Add(cutObject); | |
164 | } | |
165 | } | |
166 | PostData(1, fResults); | |
167 | } | |
168 | ||
169 | //______________________________________________________________________________ | |
170 | void AliAnalysisTaskPtEMCalTrigger::UserExec(Option_t* /*option*/){ | |
171 | /* | |
172 | * Runs the event loop | |
173 | * | |
174 | * @param option: Additional options | |
175 | */ | |
176 | ||
177 | // Common checks: Have SPD vertex and primary vertex from tracks, and both need to have at least one contributor | |
178 | AliESDEvent *esd = static_cast<AliESDEvent *>(fInputEvent); | |
179 | const AliESDVertex *vtxTracks = esd->GetPrimaryVertex(), | |
180 | *vtxSPD = esd->GetPrimaryVertexSPD(); | |
181 | if(!(vtxTracks && vtxSPD)) return; | |
182 | if(vtxTracks->GetNContributors() < 1 || vtxSPD->GetNContributors() < 1) return; | |
183 | ||
184 | double triggers[5]; memset(triggers, 0, sizeof(double) *5); | |
185 | if(fInputHandler->IsEventSelected() & AliVEvent::kINT7) | |
186 | triggers[0] = 1.; | |
187 | ||
188 | std::vector<std::string> triggerstrings; | |
189 | if(fInputHandler->IsEventSelected() & AliVEvent::kEMC7){ | |
190 | // EMCal-triggered event, distinguish types | |
191 | TString trgstr(fInputEvent->GetFiredTriggerClasses()); | |
192 | if(trgstr.Contains("EJ1")){ | |
193 | triggerstrings.push_back("EMCJHigh"); | |
194 | triggers[1] = 1; | |
195 | } | |
196 | if(trgstr.Contains("EJ2")){ | |
197 | triggerstrings.push_back("EMCJLow"); | |
198 | triggers[2] = 1; | |
199 | } | |
200 | if(trgstr.Contains("EG1")){ | |
201 | triggerstrings.push_back("EMCGHigh"); | |
202 | triggers[3] = 1; | |
203 | } | |
204 | if(trgstr.Contains("EG2")){ | |
205 | triggerstrings.push_back("EMCGLow"); | |
206 | triggers[4] = 1; | |
207 | } | |
208 | } | |
209 | try{ | |
210 | fHistos->FillTHnSparse("hEventTriggers", triggers); | |
211 | } catch (HistoContainerContentException &e){ | |
212 | std::stringstream errormessage; | |
213 | errormessage << "Filling of histogram failed: " << e.what(); | |
214 | AliError(errormessage.str().c_str()); | |
215 | } | |
216 | ||
217 | // apply event selection: Combine the Pileup cut from SPD with the other pA Vertex selection cuts. | |
218 | bool isPileupEvent = esd->IsPileupFromSPD(); | |
219 | isPileupEvent = isPileupEvent || (TMath::Abs(vtxTracks->GetZ() - vtxSPD->GetZ()) > 0.5); | |
220 | double covSPD[6]; vtxSPD->GetCovarianceMatrix(covSPD); | |
221 | isPileupEvent = isPileupEvent || (TString(vtxSPD->GetTitle()).Contains("vertexer:Z") && TMath::Sqrt(covSPD[5]) > 0.25); | |
222 | ||
223 | // Fill event-based histogram | |
224 | const double &zv = vtxTracks->GetZ(); | |
225 | if(triggers[0]) FillEventHist("MinBias", zv, isPileupEvent); | |
226 | if(!triggerstrings.size()) // Non-EMCal-triggered | |
227 | FillEventHist("NoEMCal", zv, isPileupEvent); | |
228 | else{ | |
229 | // EMCal-triggered events | |
230 | for(std::vector<std::string>::iterator it = triggerstrings.begin(); it != triggerstrings.end(); ++it) | |
231 | FillEventHist(it->c_str(), zv, isPileupEvent); | |
232 | } | |
233 | ||
234 | AliESDtrack *track(NULL); | |
235 | // Loop over all tracks (No cuts applied) | |
236 | for(int itrk = 0; itrk < fInputEvent->GetNumberOfTracks(); ++itrk){ | |
237 | track = dynamic_cast<AliESDtrack *>(fInputEvent->GetTrack(itrk)); | |
238 | // first fill without pielup cut | |
239 | if(fEtaRange.IsInRange(track->Eta())) continue; | |
240 | if(triggers[0]) FillTrackHist("MinBias", track, zv, isPileupEvent, 0); | |
241 | if(!triggerstrings.size()) // Non-EMCal-triggered | |
242 | FillTrackHist("NoEMCal", track, zv, isPileupEvent, 0); | |
243 | else { | |
244 | // EMCal-triggered events | |
245 | for(std::vector<std::string>::iterator it = triggerstrings.begin(); it != triggerstrings.end(); ++it) | |
246 | FillTrackHist(it->c_str(), track, zv, isPileupEvent, 0); | |
247 | } | |
248 | } | |
249 | ||
250 | // Now apply track selection cuts | |
251 | // allow for several track selections to be tested at the same time | |
252 | // each track selection gets a different cut ID starting from 1 | |
253 | // cut ID 0 is reserved for the case of no cuts | |
254 | if(fListTrackCuts && fListTrackCuts->GetEntries()){ | |
255 | for(int icut = 0; icut < fListTrackCuts->GetEntries(); icut++){ | |
256 | AliESDtrackCuts *trackSelection = static_cast<AliESDtrackCuts *>(fListTrackCuts->At(icut)); | |
257 | std::auto_ptr<TObjArray> acceptedTracks(trackSelection->GetAcceptedTracks(esd)); | |
258 | TIter trackIter(acceptedTracks.get()); | |
259 | while((track = dynamic_cast<AliESDtrack *>(trackIter()))){ | |
260 | if(!fEtaRange.IsInRange(track->Eta())) continue; | |
261 | if(triggers[0]) FillTrackHist("MinBias", track, zv, isPileupEvent, icut + 1); | |
262 | if(!triggerstrings.size()) // Non-EMCal-triggered | |
263 | FillTrackHist("NoEMCal", track, zv, isPileupEvent, icut + 1); | |
264 | else { | |
265 | // EMCal-triggered events | |
266 | for(std::vector<std::string>::iterator it = triggerstrings.begin(); it != triggerstrings.end(); ++it) | |
267 | FillTrackHist(it->c_str(), track, zv, isPileupEvent, icut + 1); | |
268 | } | |
269 | } | |
270 | } | |
271 | } | |
272 | PostData(1, fResults); | |
273 | } | |
274 | ||
275 | //______________________________________________________________________________ | |
276 | void AliAnalysisTaskPtEMCalTrigger::CreateDefaultPtBinning(TArrayD &binning) const{ | |
277 | /* | |
278 | * Creating the default pt binning. | |
279 | * | |
280 | * @param binning: Array where to store the results. | |
281 | */ | |
282 | std::vector<double> mybinning; | |
283 | std::map<double,double> definitions; | |
284 | definitions.insert(std::pair<double,double>(2.5, 0.1)); | |
285 | definitions.insert(std::pair<double,double>(7., 0.25)); | |
286 | definitions.insert(std::pair<double,double>(15., 0.5)); | |
287 | definitions.insert(std::pair<double,double>(25., 1.)); | |
288 | definitions.insert(std::pair<double,double>(40., 2.5)); | |
289 | definitions.insert(std::pair<double,double>(60., 5.)); | |
290 | definitions.insert(std::pair<double,double>(100., 5.)); | |
291 | double currentval = 0; | |
292 | for(std::map<double,double>::iterator id = definitions.begin(); id != definitions.end(); ++id){ | |
293 | double limit = id->first, binwidth = id->second; | |
294 | while(currentval <= limit){ | |
295 | currentval += binwidth; | |
296 | mybinning.push_back(currentval); | |
297 | } | |
298 | } | |
299 | binning.Set(mybinning.size()); | |
300 | int ib = 0; | |
301 | for(std::vector<double>::iterator it = mybinning.begin(); it != mybinning.end(); ++it) | |
302 | binning[ib++] = *it; | |
303 | } | |
304 | ||
305 | //______________________________________________________________________________ | |
306 | void AliAnalysisTaskPtEMCalTrigger::CreateDefaultZVertexBinning(TArrayD &binning) const { | |
307 | /* | |
308 | * Creating default z-Vertex binning. | |
309 | * | |
310 | * @param binning: Array where to store the results. | |
311 | */ | |
312 | std::vector<double> mybinning; | |
313 | double currentval = -40; | |
314 | mybinning.push_back(currentval); | |
315 | while(currentval <= 40.){ | |
316 | currentval += 0.1; | |
317 | mybinning.push_back(currentval); | |
318 | } | |
319 | binning.Set(mybinning.size()); | |
320 | int ib = 0; | |
321 | for(std::vector<double>::iterator it = mybinning.begin(); it != mybinning.end(); ++it) | |
322 | binning[ib++] = *it; | |
323 | } | |
324 | ||
325 | //______________________________________________________________________________ | |
326 | void AliAnalysisTaskPtEMCalTrigger::CreateDefaultEtaBinning(TArrayD& binning) const { | |
327 | /* | |
328 | * Creating default z-Vertex binning. | |
329 | * | |
330 | * @param binning: Array where to store the results. | |
331 | */ | |
332 | std::vector<double> mybinning; | |
333 | double currentval = -0.8; | |
334 | mybinning.push_back(currentval); | |
335 | while(currentval <= 0.8){ | |
336 | currentval += 0.05; | |
337 | mybinning.push_back(currentval); | |
338 | } | |
339 | binning.Set(mybinning.size()); | |
340 | int ib = 0; | |
341 | for(std::vector<double>::iterator it = mybinning.begin(); it != mybinning.end(); ++it) | |
342 | binning[ib++] = *it; | |
343 | } | |
344 | ||
345 | //______________________________________________________________________________ | |
346 | void AliAnalysisTaskPtEMCalTrigger::DefineAxis(TAxis& axis, const char* name, | |
347 | const char* title, const TArrayD& binning, const char** labels) { | |
348 | /* | |
349 | * Define an axis with a given binning | |
350 | * | |
351 | * @param axis: Axis to be defined | |
352 | * @param name: Name of the axis | |
353 | * @param title: Title of the axis | |
354 | * @param binning: axis binning | |
355 | * @param labels (@optional): array of bin labels | |
356 | */ | |
357 | axis.Set(binning.GetSize()-1, binning.GetArray()); | |
358 | axis.SetName(name); | |
359 | axis.SetTitle(title); | |
360 | if(labels){ | |
361 | for(int ib = 1; ib <= axis.GetNbins(); ++ib) | |
362 | axis.SetBinLabel(ib, labels[ib]); | |
363 | } | |
364 | } | |
365 | ||
366 | //______________________________________________________________________________ | |
367 | void AliAnalysisTaskPtEMCalTrigger::DefineAxis(TAxis& axis, const char* name, | |
368 | const char* title, int nbins, double min, double max, | |
369 | const char** labels) { | |
370 | /* | |
371 | * Define an axis with number of bins from min to max | |
372 | * | |
373 | * @param axis: Axis to be defined | |
374 | * @param name: Name of the axis | |
375 | * @param title: Title of the axis | |
376 | * @param nbins: Number of bins | |
377 | * @param min: lower limit of the axis | |
378 | * @param max: upper limit of the axis | |
379 | * @param labels (@optional): array of bin labels | |
380 | */ | |
381 | axis.Set(nbins, min, max); | |
382 | axis.SetName(name); | |
383 | axis.SetTitle(title); | |
384 | if(labels){ | |
385 | for(int ib = 1; ib <= axis.GetNbins(); ++ib) | |
386 | axis.SetBinLabel(ib, labels[ib]); | |
387 | } | |
388 | } | |
389 | ||
390 | //______________________________________________________________________________ | |
391 | void AliAnalysisTaskPtEMCalTrigger::FillEventHist(const char* trigger, | |
392 | double vz, bool isPileup) { | |
393 | /* | |
394 | * Fill event-based histogram | |
395 | * | |
396 | * @param trigger: name of the trigger configuration to be processed | |
397 | * @param vz: z-position of the vertex | |
398 | * @param isPileup: signalises if the event is flagged as pileup event | |
399 | */ | |
400 | char histname[1024]; | |
401 | sprintf(histname, "hEventHist%s", trigger); | |
402 | try{ | |
403 | fHistos->FillTH2(histname, vz, 0); | |
404 | } catch (HistoContainerContentException &e){ | |
405 | std::stringstream errormessage; | |
406 | errormessage << "Filling of histogram failed: " << e.what(); | |
407 | AliError(errormessage.str().c_str()); | |
408 | } | |
409 | if(!isPileup){ | |
410 | try{ | |
411 | fHistos->FillTH2(histname, vz, 1); | |
412 | } catch(HistoContainerContentException &e){ | |
413 | std::stringstream errormessage; | |
414 | errormessage << "Filling of histogram failed: " << e.what(); | |
415 | AliError(errormessage.str().c_str()); | |
416 | } | |
417 | } | |
418 | } | |
419 | ||
420 | //______________________________________________________________________________ | |
421 | void AliAnalysisTaskPtEMCalTrigger::FillTrackHist(const char* trigger, | |
422 | const AliESDtrack* track, double vz, bool isPileup, int cut) { | |
423 | /* | |
424 | * Fill track-based histogram with corresponding information | |
425 | * | |
426 | * @param trigger: name of the trigger | |
427 | * @param track: ESD track selected | |
428 | * @param vz: z-position of the vertex | |
429 | * @param isPileup: flag event as pileup event | |
430 | * @param cut: id of the cut (0 = no cut) | |
431 | */ | |
432 | double data[6] = {track->Pt(), track->Eta(), track->Phi(), vz, 0, cut}; | |
433 | char histname[1024]; | |
434 | sprintf(histname, "hTrackHist%s", trigger); | |
435 | try{ | |
436 | fHistos->FillTHnSparse(histname, data); | |
437 | } catch (HistoContainerContentException &e){ | |
438 | std::stringstream errormessage; | |
439 | errormessage << "Filling of histogram failed: " << e.what(); | |
440 | AliError(errormessage.str().c_str()); | |
441 | } | |
442 | if(!isPileup){ | |
443 | data[4] = 1; | |
444 | try{ | |
445 | fHistos->FillTHnSparse(histname, data); | |
446 | } catch (HistoContainerContentException &e){ | |
447 | std::stringstream errormessage; | |
448 | errormessage << "Filling of histogram failed: " << e.what(); | |
449 | AliError(errormessage.str().c_str()); | |
450 | } | |
451 | } | |
452 | } | |
453 | ||
454 | } | |
455 |