]>
Commit | Line | Data |
---|---|---|
3c8efc07 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, 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 | // // | |
18 | // This class provides TOF pass0/passX calibration tools // | |
19 | // // | |
20 | /////////////////////////////////////////////////////////////// | |
21 | ||
22 | #include "AliTOFAnalysisTaskCalibPass0.h" | |
23 | #include "AliESDtrack.h" | |
24 | #include "AliESDEvent.h" | |
25 | #include "AliPhysicsSelection.h" | |
26 | #include "AliESDtrackCuts.h" | |
27 | #include "AliCDBManager.h" | |
28 | #include "AliGRPManager.h" | |
29 | #include "AliGRPObject.h" | |
30 | #include "AliTOFcalib.h" | |
31 | #include "TList.h" | |
32 | #include "TH2F.h" | |
33 | #include "TFile.h" | |
34 | #include "TH1D.h" | |
35 | #include "TObjArray.h" | |
36 | #include "TString.h" | |
37 | #include "TObjString.h" | |
38 | #include "TROOT.h" | |
39 | #include "TF1.h" | |
40 | #include "TTime.h" | |
41 | #include "TGrid.h" | |
42 | #include "TTimeStamp.h" | |
43 | #include "AliTOFRunParams.h" | |
44 | #include "AliCDBStorage.h" | |
45 | #include "AliCDBId.h" | |
46 | #include "AliCDBMetaData.h" | |
47 | #include "TSystem.h" | |
48 | #include "AliLog.h" | |
49 | ||
50 | ClassImp(AliTOFAnalysisTaskCalibPass0) | |
51 | ||
52 | //_______________________________________________________ | |
53 | ||
54 | const Int_t AliTOFAnalysisTaskCalibPass0::fgkMaxNumberOfPoints = 10000; // max number of points | |
55 | const Double_t AliTOFAnalysisTaskCalibPass0::fgkMinVertexIntegral = 1000.; | |
56 | const Double_t AliTOFAnalysisTaskCalibPass0::fgkMinDeltatIntegral = 20000.; | |
57 | ||
58 | //_______________________________________________________ | |
59 | ||
60 | AliTOFAnalysisTaskCalibPass0::AliTOFAnalysisTaskCalibPass0() : | |
61 | AliAnalysisTaskSE("TOFCalib-Pass0"), | |
62 | fInitFlag(kFALSE), | |
63 | fEventSelectionFlag(kFALSE), | |
64 | fVertexSelectionFlag(kFALSE), | |
65 | fVertexCut(10.), | |
66 | fRunNumber(0), | |
67 | fESDEvent(NULL), | |
68 | fEventCuts(new AliPhysicsSelection()), | |
69 | fTrackCuts(new AliESDtrackCuts()), | |
70 | fStartTime(0), | |
71 | fEndTime(0), | |
72 | fEventTime(0), | |
73 | fElapsedTime(0), | |
74 | fkVertex(NULL), | |
75 | fGRPManager(new AliGRPManager()), | |
76 | fkGRPObject(NULL), | |
77 | fTOFcalib(new AliTOFcalib()), | |
78 | fHistoList(new TList()), | |
79 | fHistoVertexTimestamp(NULL), | |
80 | fHistoDeltatTimestamp(NULL), | |
81 | fHistoDeltazEta(NULL), | |
82 | fHistoDeltazCosTheta(NULL), | |
83 | fHistoAcceptedTracksEtaPt(NULL), | |
84 | fHistoMatchedTracksEtaPt(NULL) | |
85 | { | |
86 | /* | |
87 | * default constructor | |
88 | */ | |
89 | ||
90 | /* define output */ | |
91 | fHistoList->SetOwner(kTRUE); | |
92 | DefineOutput(1, TList::Class()); | |
93 | } | |
94 | ||
95 | //_______________________________________________________ | |
96 | ||
97 | AliTOFAnalysisTaskCalibPass0::~AliTOFAnalysisTaskCalibPass0() | |
98 | { | |
99 | /* | |
100 | * default destructor | |
101 | */ | |
102 | ||
103 | if (fHistoList) delete fHistoList; | |
104 | } | |
105 | ||
106 | //_______________________________________________________ | |
107 | ||
108 | Bool_t | |
109 | AliTOFAnalysisTaskCalibPass0::InitRun() | |
110 | { | |
111 | /* | |
112 | * init run | |
113 | */ | |
114 | ||
115 | /* get ESD event */ | |
116 | fESDEvent = dynamic_cast<AliESDEvent *>(InputEvent()); | |
117 | if (!fESDEvent) { | |
118 | AliError("cannot get ESD event"); | |
119 | return kFALSE; | |
120 | } | |
121 | /* get run number */ | |
122 | Int_t runNb = fESDEvent->GetRunNumber(); | |
123 | /* check run already initialized */ | |
124 | if (fInitFlag && fRunNumber == runNb) return kTRUE; | |
125 | if (fInitFlag && fRunNumber != runNb) { | |
126 | AliFatal(Form("run number has changed within same job and this is not allowed: %d -> %d", fRunNumber, runNb)); | |
127 | return kTRUE; | |
128 | } | |
129 | fInitFlag = kFALSE; | |
130 | /* init cdb if not yet done */ | |
131 | AliCDBManager *cdb = AliCDBManager::Instance(); | |
132 | if (!cdb->IsDefaultStorageSet()) | |
133 | cdb->SetDefaultStorage("raw://"); | |
134 | if (cdb->GetRun() < 0) | |
135 | cdb->SetRun(runNb); | |
136 | /* init TOF calib */ | |
137 | if (!fTOFcalib->Init()) { | |
138 | AliError("cannot init TOF calib"); | |
139 | return kFALSE; | |
140 | } | |
141 | /* get GRP data */ | |
142 | if (!fGRPManager->ReadGRPEntry()) { | |
143 | AliError("error while reading \"GRPEntry\" from OCDB"); | |
144 | return kFALSE; | |
145 | } | |
146 | fkGRPObject = fGRPManager->GetGRPData(); | |
147 | if (!fkGRPObject) { | |
148 | AliError("cannot get \"GRPData\" from GRP manager"); | |
149 | return kFALSE; | |
150 | } | |
151 | fStartTime = fkGRPObject->GetTimeStart(); | |
152 | fEndTime = fkGRPObject->GetTimeEnd(); | |
153 | AliInfo(Form("got \"GRPData\": startTime=%d, endTime=%d", fStartTime, fEndTime)); | |
154 | ||
155 | AliInfo(Form("initialized for run %d", runNb)); | |
156 | fInitFlag = kTRUE; | |
157 | fRunNumber = runNb; | |
158 | ||
159 | /* set histo title with run-number and start-time */ | |
160 | fHistoVertexTimestamp->SetTitle(Form("run: %d, startTimestamp: %u", fRunNumber, fStartTime)); | |
161 | fHistoDeltatTimestamp->SetTitle(Form("run: %d, startTimestamp: %u", fRunNumber, fStartTime)); | |
162 | fHistoDeltazEta->SetTitle(Form("run: %d, startTimestamp: %u", fRunNumber, fStartTime)); | |
163 | fHistoDeltazCosTheta->SetTitle(Form("run: %d, startTimestamp: %u", fRunNumber, fStartTime)); | |
164 | fHistoAcceptedTracksEtaPt->SetTitle(Form("run: %d, startTimestamp: %u", fRunNumber, fStartTime)); | |
165 | fHistoMatchedTracksEtaPt->SetTitle(Form("run: %d, startTimestamp: %u", fRunNumber, fStartTime)); | |
166 | ||
167 | return kTRUE; | |
168 | } | |
169 | ||
170 | //_______________________________________________________ | |
171 | ||
172 | Bool_t | |
173 | AliTOFAnalysisTaskCalibPass0::InitEvent() | |
174 | { | |
175 | /* | |
176 | * init event | |
177 | */ | |
178 | ||
179 | /* get ESD event */ | |
180 | fESDEvent = dynamic_cast<AliESDEvent *>(InputEvent()); | |
181 | if (!fESDEvent) return kFALSE; | |
182 | /* set event time and elapsed time */ | |
183 | fEventTime = fESDEvent->GetTimeStamp(); | |
184 | fElapsedTime = fESDEvent->GetTimeStamp() - fStartTime; | |
185 | /* event selection */ | |
186 | if (fEventSelectionFlag && !fEventCuts->IsCollisionCandidate(fESDEvent)) return kFALSE; | |
187 | /* vertex selection */ | |
188 | fkVertex = fESDEvent->GetPrimaryVertexTracks(); | |
189 | if (fVertexSelectionFlag && fkVertex->GetNContributors() < 1) { | |
190 | fkVertex = fESDEvent->GetPrimaryVertexSPD(); | |
191 | if (fkVertex->GetNContributors() < 1) return kFALSE; | |
192 | } | |
193 | if (fVertexSelectionFlag && TMath::Abs(fkVertex->GetZ()) > fVertexCut) return kFALSE; | |
194 | /* calibrate ESD if requested */ | |
195 | fTOFcalib->CalibrateESD(fESDEvent); | |
196 | ||
197 | return kTRUE; | |
198 | } | |
199 | ||
200 | //_______________________________________________________ | |
201 | ||
202 | Bool_t | |
203 | AliTOFAnalysisTaskCalibPass0::HasTOFMeasurement(const AliESDtrack *track) const | |
204 | { | |
205 | /* | |
206 | * has TOF measurement | |
207 | */ | |
208 | ||
209 | /* check TOF status flags */ | |
210 | if (!(track->GetStatus() & AliESDtrack::kTOFout) || | |
211 | !(track->GetStatus() & AliESDtrack::kTIME)) return kFALSE; | |
212 | /* check integrated length */ | |
213 | if (track->GetIntegratedLength() < 350.) return kFALSE; | |
214 | ||
215 | /* TOF measurement ok */ | |
216 | return kTRUE; | |
217 | } | |
218 | ||
219 | //_______________________________________________________ | |
220 | ||
221 | void | |
222 | AliTOFAnalysisTaskCalibPass0::UserCreateOutputObjects() | |
223 | { | |
224 | /* | |
225 | * user create output objects | |
226 | */ | |
227 | ||
228 | /* time binning */ | |
229 | Int_t timeBins = 288; | |
230 | Float_t timeMin = 0.; | |
231 | Float_t timeMax = 24. * 3600.; | |
232 | /* vertex binning */ | |
233 | Int_t vertexBins = 200; | |
234 | Float_t vertexMin = -50.; | |
235 | Float_t vertexMax = 50.; | |
236 | /* deltat binning */ | |
237 | Int_t deltatBins = 2000; | |
238 | Float_t deltatMin = -24400.; | |
239 | Float_t deltatMax = 24400.; | |
240 | /* deltaz binning */ | |
241 | Int_t deltazBins = 200; | |
242 | Float_t deltazMin = -10.; | |
243 | Float_t deltazMax = 10.; | |
244 | /* eta binning */ | |
245 | Int_t etaBins = 200; | |
246 | Float_t etaMin = -1.; | |
247 | Float_t etaMax = 1.; | |
248 | /* p binning */ | |
249 | Int_t pBins = 500; | |
250 | Float_t pMin = 0.; | |
251 | Float_t pMax = 5.; | |
252 | ||
253 | fHistoVertexTimestamp = new TH2F("hHistoVertexTimestamp", "Vertex position;elapsed time (s);z (cm);", timeBins, timeMin, timeMax, vertexBins, vertexMin, vertexMax); | |
254 | fHistoList->Add(fHistoVertexTimestamp); | |
255 | ||
256 | fHistoDeltatTimestamp = new TH2F("hHistoDeltatTimestamp", "Global time shift (T0-fill);elapsed time (s);t - t_{exp}^{(#pi)} (ps);", timeBins, timeMin, timeMax, deltatBins, deltatMin, deltatMax); | |
257 | fHistoList->Add(fHistoDeltatTimestamp); | |
258 | ||
259 | fHistoDeltazEta = new TH2F("hHistoDeltazEta", "Matching residuals (longitudinal);#eta;#Deltaz (cm);", etaBins, etaMin, etaMax, deltazBins, deltazMin, deltazMax); | |
260 | fHistoList->Add(fHistoDeltazEta); | |
261 | ||
262 | fHistoDeltazCosTheta = new TH2F("hHistoDeltazCosTheta", "Matching residuals (longitudinal);cos #theta;#Deltaz (cm);", etaBins, etaMin, etaMax, deltazBins, deltazMin, deltazMax); | |
263 | fHistoList->Add(fHistoDeltazCosTheta); | |
264 | ||
265 | fHistoAcceptedTracksEtaPt = new TH2F("hHistoAcceptedTracksEtaPt", "Accepted tracks;#eta;#p_{T} (GeV/c);", etaBins, etaMin, etaMax, pBins, pMin, pMax); | |
266 | fHistoList->Add(fHistoAcceptedTracksEtaPt); | |
267 | ||
268 | fHistoMatchedTracksEtaPt = new TH2F("hHistoMatchedTracksEtaPt", "Matched tracks;#eta;p_{T} (GeV/c);", etaBins, etaMin, etaMax, pBins, pMin, pMax); | |
269 | fHistoList->Add(fHistoMatchedTracksEtaPt); | |
270 | ||
271 | /* post data */ | |
272 | PostData(1, fHistoList); | |
273 | } | |
274 | ||
275 | //_______________________________________________________ | |
276 | ||
277 | void | |
278 | AliTOFAnalysisTaskCalibPass0::UserExec(Option_t *) | |
279 | { | |
280 | /* | |
281 | * user exec | |
282 | */ | |
283 | ||
284 | /* init run */ | |
285 | if (!InitRun()) return; | |
286 | /* init event */ | |
287 | if (!InitEvent()) return; | |
288 | ||
289 | /*** ACCEPTED EVENT ***/ | |
290 | ||
291 | /* fill vertex histo */ | |
292 | fHistoVertexTimestamp->Fill(fElapsedTime, fkVertex->GetZ()); | |
293 | ||
294 | /* loop over ESD tracks */ | |
295 | Int_t nTracks = fESDEvent->GetNumberOfTracks(); | |
296 | AliESDtrack *track; | |
297 | Double_t eta, costheta, pt, time, timei[AliPID::kSPECIES], deltat, deltaz; | |
298 | for (Int_t itrk = 0; itrk < nTracks; itrk++) { | |
299 | /* get track */ | |
300 | track = fESDEvent->GetTrack(itrk); | |
301 | if (!track) continue; | |
302 | /* check accept track */ | |
303 | if (!fTrackCuts->AcceptTrack(track)) continue; | |
304 | /* get track info */ | |
305 | eta = track->Eta(); | |
306 | costheta = TMath::Cos(track->Theta()); | |
307 | pt = track->Pt(); | |
308 | /* fill accepted tracks histo */ | |
309 | fHistoAcceptedTracksEtaPt->Fill(eta, pt); | |
310 | /* check TOF measurement */ | |
311 | if (!HasTOFMeasurement(track)) continue; | |
312 | ||
313 | /*** ACCEPTED TRACK WITH TOF MEASUREMENT ***/ | |
314 | ||
315 | /* fill matched tracks histo */ | |
316 | fHistoMatchedTracksEtaPt->Fill(eta, pt); | |
317 | /* get TOF info */ | |
318 | time = track->GetTOFsignal(); | |
319 | track->GetIntegratedTimes(timei); | |
320 | deltat = time - timei[AliPID::kPion]; | |
321 | deltaz = track->GetTOFsignalDz(); | |
322 | ||
323 | /* fill histos */ | |
324 | fHistoDeltatTimestamp->Fill(fElapsedTime, deltat); | |
325 | fHistoDeltazEta->Fill(eta, deltaz); | |
326 | fHistoDeltazCosTheta->Fill(costheta, deltaz); | |
327 | ||
328 | } /* end of loop over ESD tracks */ | |
329 | ||
330 | /* post data */ | |
331 | PostData(1, fHistoList); | |
332 | ||
333 | } | |
334 | ||
335 | //_______________________________________________________ | |
336 | ||
337 | Bool_t | |
338 | AliTOFAnalysisTaskCalibPass0::ProcessOutput(const Char_t *filename, const Char_t *dbString) | |
339 | { | |
340 | /* | |
341 | * process output | |
342 | */ | |
343 | ||
344 | /* open file */ | |
345 | TFile *file = TFile::Open(filename); | |
346 | if (!file || !file->IsOpen()) { | |
347 | AliError(Form("cannot open output file %s", filename)); | |
348 | return kFALSE; | |
349 | } | |
36c9ca5c | 350 | /* get histograms */ |
87ddb812 | 351 | TList *list = (TList *)file->Get("TOFHistos"); |
36c9ca5c | 352 | TH2F *histoVertexTimestamp = NULL; |
353 | TH2F *histoDeltatTimestamp = NULL; | |
354 | TH2F *histoDeltazEta = NULL; | |
355 | TH2F *histoDeltazCosTheta = NULL; | |
356 | TH2F *histoAcceptedTracksEtaPt = NULL; | |
357 | TH2F *histoMatchedTracksEtaPt = NULL; | |
358 | if (list) { | |
359 | AliInfo(Form("getting histograms from \"Histos\" list from file %s", filename)); | |
360 | histoVertexTimestamp = (TH2F *)list->FindObject("hHistoVertexTimestamp"); | |
361 | histoDeltatTimestamp = (TH2F *)list->FindObject("hHistoDeltatTimestamp"); | |
362 | histoDeltazEta = (TH2F *)list->FindObject("hHistoDeltazEta"); | |
363 | histoDeltazCosTheta = (TH2F *)list->FindObject("hHistoDeltazCosTheta"); | |
364 | histoAcceptedTracksEtaPt = (TH2F *)list->FindObject("hHistoAcceptedTracksEtaPt"); | |
365 | histoMatchedTracksEtaPt = (TH2F *)list->FindObject("hHistoMatchedTracksEtaPt"); | |
366 | } | |
367 | else { | |
368 | AliInfo(Form("getting histograms directly from file %s", filename)); | |
369 | histoVertexTimestamp = (TH2F *)file->Get("hHistoVertexTimestamp"); | |
370 | histoDeltatTimestamp = (TH2F *)file->Get("hHistoDeltatTimestamp"); | |
371 | histoDeltazEta = (TH2F *)file->Get("hHistoDeltazEta"); | |
372 | histoDeltazCosTheta = (TH2F *)file->Get("hHistoDeltazCosTheta"); | |
373 | histoAcceptedTracksEtaPt = (TH2F *)file->Get("hHistoAcceptedTracksEtaPt"); | |
374 | histoMatchedTracksEtaPt = (TH2F *)file->Get("hHistoMatchedTracksEtaPt"); | |
3c8efc07 | 375 | } |
36c9ca5c | 376 | /* check histos */ |
3c8efc07 | 377 | if (!histoVertexTimestamp) { |
378 | AliError(Form("cannot get \"hHistoVertexTimestamp\" object from file %s", filename)); | |
379 | return kFALSE; | |
380 | } | |
3c8efc07 | 381 | if (!histoDeltatTimestamp) { |
382 | AliError(Form("cannot get \"hHistoDeltatTimestamp\" object from file %s", filename)); | |
383 | return kFALSE; | |
384 | } | |
3c8efc07 | 385 | if (!histoDeltazEta) { |
386 | AliError(Form("cannot get \"hHistoDeltazEta\" object from file %s", filename)); | |
387 | return kFALSE; | |
388 | } | |
3c8efc07 | 389 | if (!histoDeltazCosTheta) { |
390 | AliError(Form("cannot get \"hHistoDeltazCosTheta\" object from file %s", filename)); | |
391 | return kFALSE; | |
392 | } | |
3c8efc07 | 393 | if (!histoAcceptedTracksEtaPt) { |
394 | AliError(Form("cannot get \"hHistoAccptedTracksEtaPt\" object from file %s", filename)); | |
395 | return kFALSE; | |
396 | } | |
3c8efc07 | 397 | if (!histoMatchedTracksEtaPt) { |
398 | AliError(Form("cannot get \"hHistoMatchedTracksEtaPt\" object from file %s", filename)); | |
399 | return kFALSE; | |
400 | } | |
401 | /* check matching performance */ | |
402 | if (!CheckMatchingPerformance(histoDeltazEta, histoAcceptedTracksEtaPt, histoMatchedTracksEtaPt)) { | |
403 | AliError("error while checking matching efficiency"); | |
404 | return kFALSE; | |
405 | } | |
406 | /* calibrate and store */ | |
407 | if (!CalibrateAndStore(histoVertexTimestamp, histoDeltatTimestamp, dbString)) { | |
408 | AliError("error while calibrating and storing"); | |
409 | return kFALSE; | |
410 | } | |
411 | ||
412 | /* success */ | |
413 | return kTRUE; | |
414 | } | |
415 | ||
416 | //_______________________________________________________ | |
417 | ||
418 | Bool_t | |
419 | AliTOFAnalysisTaskCalibPass0::CheckMatchingPerformance(const TH2F *histoDeltazCosTheta, const TH2F *histoAcceptedTracksEtaPt, const TH2F *histoMatchedTracksEtaPt) const | |
420 | { | |
421 | /* | |
422 | * check matching performance | |
423 | */ | |
424 | ||
425 | /* check pointers */ | |
426 | if (!histoDeltazCosTheta || !histoAcceptedTracksEtaPt || !histoMatchedTracksEtaPt) | |
427 | return kFALSE; | |
428 | /* dummy for the time being */ | |
429 | return kTRUE; | |
430 | } | |
431 | ||
432 | //_______________________________________________________ | |
433 | ||
434 | Bool_t | |
435 | AliTOFAnalysisTaskCalibPass0::CalibrateAndStore(TH2F *histoVertexTimestamp, TH2F *histoDeltatTimestamp, const Char_t *dbString) | |
436 | { | |
437 | /* | |
438 | * calibrate and store | |
439 | */ | |
440 | ||
441 | /* check pointers */ | |
442 | if (!histoVertexTimestamp || !histoDeltatTimestamp) | |
443 | return kFALSE; | |
444 | ||
445 | /*** GET RUN-NUMBER AND START-TIMESTAMP ***/ | |
446 | ||
447 | TString str; | |
448 | TObjArray *strarr = NULL; | |
449 | TObjString *ostr = NULL; | |
450 | str = histoVertexTimestamp->GetTitle(); | |
451 | strarr = str.Tokenize(","); | |
452 | if (!strarr) { | |
453 | AliError("problems whith tokenize histogram title"); | |
454 | return kFALSE; | |
455 | } | |
456 | ||
457 | /* run number */ | |
458 | ostr = (TObjString *)strarr->At(0); | |
459 | if (!ostr) { | |
460 | AliError("problems while getting run number from histogram title"); | |
461 | return kFALSE; | |
462 | } | |
463 | str = ostr->GetString(); | |
464 | if (!str.BeginsWith("run:")) { | |
465 | AliError("problems while getting run number from histogram title"); | |
466 | return kFALSE; | |
467 | } | |
468 | str.Remove(0, 5); | |
469 | Int_t runNb = atoi(str.Data()); | |
470 | if (runNb <= 0) { | |
471 | AliError(Form("bad run number: %d", runNb)); | |
472 | return kFALSE; | |
473 | } | |
474 | AliInfo(Form("got run number: %d", runNb)); | |
475 | ||
476 | /* start timestamp */ | |
477 | ostr = (TObjString *)strarr->At(1); | |
478 | if (!ostr) { | |
479 | AliError("problems while getting start timestamp from histogram title"); | |
480 | return kFALSE; | |
481 | } | |
482 | str = ostr->GetString(); | |
483 | str.Remove(0, 1); /* remove empty space at the beginning */ | |
484 | if (!str.BeginsWith("startTimestamp:")) { | |
485 | AliError("problems while getting start timestamp from histogram title"); | |
486 | return kFALSE; | |
487 | } | |
488 | str.Remove(0, 16); | |
489 | UInt_t startTimestamp = atoi(str.Data()); | |
490 | if (startTimestamp <= 0) { | |
491 | AliError(Form("bad start timestamp: %d", startTimestamp)); | |
492 | return kFALSE; | |
493 | } | |
494 | TTimeStamp ts = startTimestamp; | |
495 | AliInfo(Form("got start timestamp: %d (%s)", startTimestamp, ts.AsString())); | |
496 | ||
497 | /*** CALIBRATION STAGE ***/ | |
498 | ||
499 | /* get fit function */ | |
500 | TF1 *fitFunc = (TF1 *)gROOT->GetFunction("gaus"); | |
501 | ||
502 | /* projection-x */ | |
503 | TH1D *histoVertexTimestamppx = histoVertexTimestamp->ProjectionX("histoVertexTimestamppx"); | |
504 | TH1D *histoDeltatTimestamppx = histoDeltatTimestamp->ProjectionX("histoDeltatTimestamppx"); | |
505 | ||
506 | /* define mix and max time bin */ | |
507 | Int_t minBin = histoVertexTimestamppx->FindFirstBinAbove(0); | |
508 | Int_t maxBin = histoVertexTimestamppx->FindLastBinAbove(0); | |
509 | Float_t minTime = histoVertexTimestamppx->GetBinLowEdge(minBin); | |
510 | Float_t maxTime = histoVertexTimestamppx->GetBinLowEdge(maxBin + 1); | |
511 | AliInfo(Form("min/max time defined: %d < t < %d s [%d, %d]", (Int_t)minTime, (Int_t)maxTime, minBin, maxBin)); | |
512 | ||
513 | /* loop over time bins */ | |
514 | Int_t nPoints = 0; | |
515 | Float_t time[fgkMaxNumberOfPoints], timeerr[fgkMaxNumberOfPoints]; | |
516 | Float_t vertexMean[fgkMaxNumberOfPoints], vertexMeanerr[fgkMaxNumberOfPoints]; | |
517 | Float_t vertexSigma[fgkMaxNumberOfPoints], vertexSigmaerr[fgkMaxNumberOfPoints]; | |
518 | Float_t timeZeroMean[fgkMaxNumberOfPoints], timeZeroMeanerr[fgkMaxNumberOfPoints]; | |
519 | Float_t timeZeroSigma[fgkMaxNumberOfPoints], timeZeroSigmaerr[fgkMaxNumberOfPoints]; | |
520 | Float_t averageTimeZero = 0.; | |
521 | Float_t averageTimeSigma = 0.; | |
522 | Float_t averageVertexSpread = 0.; | |
523 | for (Int_t ibin = minBin; ibin <= maxBin; ibin++) { | |
524 | ||
525 | /* define time window */ | |
526 | Int_t startBin = ibin; | |
527 | Int_t endBin = ibin; | |
528 | while(histoVertexTimestamppx->Integral(startBin, endBin) < fgkMinVertexIntegral || | |
529 | histoDeltatTimestamppx->Integral(startBin, endBin) < fgkMinDeltatIntegral) { | |
530 | if (endBin < maxBin) endBin++; | |
531 | else if (startBin > minBin) startBin--; | |
532 | else break; | |
533 | } | |
534 | if (histoVertexTimestamppx->Integral(startBin, endBin) <= 0 || | |
535 | histoDeltatTimestamppx->Integral(startBin, endBin) <= 0) continue; | |
536 | Float_t startTime = histoVertexTimestamppx->GetBinLowEdge(startBin); | |
537 | Float_t endTime = histoVertexTimestamppx->GetBinLowEdge(endBin + 1); | |
538 | Float_t vertexIntegral = histoVertexTimestamppx->Integral(startBin, endBin); | |
539 | Float_t deltatIntegral = histoDeltatTimestamppx->Integral(startBin, endBin); | |
540 | AliInfo(Form("time window defined: %d < t < %d s [%d, %d]: %d vertices, %d tracks", (Int_t)startTime, (Int_t)endTime, startBin, endBin, (Int_t)vertexIntegral, (Int_t)deltatIntegral)); | |
541 | ||
542 | /* projection-y */ | |
543 | TH1D *histoVertexTimestamppy = histoVertexTimestamp->ProjectionY("histoVertexTimestamppy", startBin, endBin); | |
544 | TH1D *histoDeltatTimestamppy = histoDeltatTimestamp->ProjectionY("histoDeltatTimestamppy", startBin, endBin); | |
545 | ||
546 | /* average time */ | |
547 | histoVertexTimestamppx->GetXaxis()->SetRange(startBin, endBin); | |
548 | time[nPoints] = histoVertexTimestamppx->GetMean(); | |
549 | timeerr[nPoints] = histoVertexTimestamppx->GetMeanError(); | |
550 | ||
551 | /* fit vertex */ | |
552 | if (FitPeak(fitFunc, histoVertexTimestamppy, 10., 3., 3.) != 0) { | |
553 | AliError("troubles fitting vertex, skip"); | |
554 | delete histoVertexTimestamppy; | |
555 | delete histoDeltatTimestamppy; | |
556 | continue; | |
557 | } | |
558 | vertexMean[nPoints] = fitFunc->GetParameter(1); | |
559 | vertexMeanerr[nPoints] = fitFunc->GetParError(1); | |
560 | vertexSigma[nPoints] = fitFunc->GetParameter(2); | |
561 | vertexSigmaerr[nPoints] = fitFunc->GetParError(2); | |
562 | averageVertexSpread += fitFunc->GetParameter(2); | |
563 | ||
564 | /* fit time-zero */ | |
565 | if (FitPeak(fitFunc, histoDeltatTimestamppy, 500., 2., 1.) != 0) { | |
566 | AliError("troubles fitting time-zero TRACKS, skip"); | |
567 | delete histoVertexTimestamppy; | |
568 | delete histoDeltatTimestamppy; | |
569 | continue; | |
570 | } | |
571 | timeZeroMean[nPoints] = fitFunc->GetParameter(1); | |
572 | timeZeroMeanerr[nPoints] = fitFunc->GetParError(1); | |
573 | timeZeroSigma[nPoints] = fitFunc->GetParameter(2); | |
574 | timeZeroSigmaerr[nPoints] = fitFunc->GetParError(2); | |
575 | averageTimeZero += fitFunc->GetParameter(1); | |
576 | averageTimeSigma += fitFunc->GetParameter(2); | |
577 | ||
578 | /* delete projection-y */ | |
579 | delete histoVertexTimestamppy; | |
580 | delete histoDeltatTimestamppy; | |
581 | ||
582 | /* increment n points */ | |
583 | nPoints++; | |
584 | ||
585 | /* set current bin */ | |
586 | ibin = endBin; | |
587 | ||
588 | } /* end of loop over time bins */ | |
589 | ||
590 | /* delete projection-x */ | |
591 | delete histoVertexTimestamppx; | |
592 | delete histoDeltatTimestamppx; | |
593 | ||
594 | /* check points */ | |
595 | if (nPoints <= 0) { | |
596 | AliError("no measurement available, quit"); | |
597 | return kFALSE; | |
598 | } | |
599 | AliInfo(Form("average time-zero = %f", averageTimeZero / nPoints)); | |
600 | AliInfo(Form("average time-sigma = %f", averageTimeSigma / nPoints)); | |
601 | AliInfo(Form("average v-spread = %f", averageVertexSpread / nPoints)); | |
602 | ||
603 | /*** CREATE RUN PARAMS OBJECT ***/ | |
604 | ||
605 | #if 0 | |
606 | /* get start time from GRP */ | |
607 | TGrid::Connect("alien://", 0, 0, "t"); | |
608 | AliCDBManager *cdb = AliCDBManager::Instance(); | |
609 | cdb->SetDefaultStorage("raw://"); | |
610 | cdb->SetRun(runNb); | |
611 | AliGRPManager grp; | |
612 | if (!grp.ReadGRPEntry()) { | |
613 | AliError("error while reading GRP entry"); | |
614 | return kFALSE; | |
615 | } | |
616 | UInt_t startTimestamp = grp.GetGRPData()->GetTimeStart(); | |
617 | TTimeStamp ts; | |
618 | ts = startTimestamp; | |
619 | AliInfo(Form("got start time from GRP: %s", ts.AsString())); | |
620 | #endif | |
621 | ||
622 | /* create arrays */ | |
623 | UInt_t timestamp[fgkMaxNumberOfPoints]; | |
624 | Float_t t0[fgkMaxNumberOfPoints]; | |
625 | Float_t tofReso[fgkMaxNumberOfPoints]; | |
626 | Float_t t0Spread[fgkMaxNumberOfPoints]; | |
627 | for (Int_t ipoint = 0; ipoint < nPoints; ipoint++) { | |
7ca3d6d6 | 628 | timestamp[ipoint] = (UInt_t)time[ipoint] + startTimestamp; |
3c8efc07 | 629 | t0[ipoint] = timeZeroMean[ipoint]; |
630 | tofReso[ipoint] = timeZeroSigma[ipoint]; | |
631 | t0Spread[ipoint] = vertexSigma[ipoint] / 2.99792457999999984e-02; | |
632 | } | |
633 | UInt_t run[1] = {runNb}; | |
634 | UInt_t runFirstPoint[1] = {0}; | |
635 | UInt_t runLastPoint[1] = {nPoints - 1}; | |
636 | ||
637 | /* create run params object */ | |
638 | AliTOFRunParams obj(nPoints, 1); | |
639 | AliInfo(Form("create run params object for run %d with %d points", runNb, nPoints)); | |
640 | obj.SetTimestamp(timestamp); | |
641 | obj.SetT0(t0); | |
642 | obj.SetTOFResolution(tofReso); | |
643 | obj.SetT0Spread(t0Spread); | |
644 | obj.SetRunNb(run); | |
645 | obj.SetRunFirstPoint(runFirstPoint); | |
646 | obj.SetRunLastPoint(runLastPoint); | |
647 | ||
648 | /*** CREATE OCDB ENTRY ***/ | |
649 | ||
650 | if (!dbString) { | |
651 | AliError("cannot store object because of NULL string"); | |
652 | return kFALSE; | |
653 | } | |
654 | ||
655 | /* install run params object in OCDB */ | |
656 | AliCDBManager *cdb = AliCDBManager::Instance(); | |
657 | AliCDBStorage *sto = cdb->GetStorage(dbString); | |
658 | if (!sto) { | |
659 | AliError(Form("cannot get storage %s", dbString)); | |
660 | return kFALSE; | |
661 | } | |
662 | AliCDBId id("TOF/Calib/RunParams", runNb, runNb); | |
663 | AliCDBMetaData md; | |
664 | md.SetResponsible("Roberto Preghenella"); | |
665 | md.SetComment("offline TOF run parameters"); | |
666 | md.SetAliRootVersion(gSystem->Getenv("ARVERSION")); | |
667 | md.SetBeamPeriod(0); | |
668 | if (!sto->Put(&obj, id, &md)) { | |
669 | AliError(Form("error while putting object in storage %s", dbString)); | |
670 | } | |
671 | ||
672 | /* success */ | |
673 | return kTRUE; | |
674 | } | |
675 | ||
676 | //_____________________________________________________________ | |
677 | ||
678 | Int_t | |
679 | AliTOFAnalysisTaskCalibPass0::FitPeak(TF1 *fitFunc, TH1D *h, Float_t startSigma, Float_t nSigmaMin, Float_t nSigmaMax) | |
680 | { | |
681 | /* | |
682 | * fit peak | |
683 | */ | |
684 | ||
685 | Double_t fitCent = h->GetBinCenter(h->GetMaximumBin()); | |
686 | Double_t fitMin = fitCent - nSigmaMin * startSigma; | |
687 | Double_t fitMax = fitCent + nSigmaMax * startSigma; | |
688 | if (fitMin < h->GetXaxis()->GetXmin()) fitMin = h->GetXaxis()->GetXmin(); | |
689 | if (fitMax > h->GetXaxis()->GetXmax()) fitMax = h->GetXaxis()->GetXmax(); | |
690 | fitFunc->SetParameter(1, fitCent); | |
691 | fitFunc->SetParameter(2, startSigma); | |
692 | Int_t fitres = h->Fit(fitFunc, "WWq0", "", fitMin, fitMax); | |
693 | if (fitres != 0) return fitres; | |
694 | /* refit with better range */ | |
695 | for (Int_t i = 0; i < 3; i++) { | |
696 | fitCent = fitFunc->GetParameter(1); | |
697 | fitMin = fitCent - nSigmaMin * fitFunc->GetParameter(2); | |
698 | fitMax = fitCent + nSigmaMax * fitFunc->GetParameter(2); | |
699 | if (fitMin < h->GetXaxis()->GetXmin()) fitMin = h->GetXaxis()->GetXmin(); | |
700 | if (fitMax > h->GetXaxis()->GetXmax()) fitMax = h->GetXaxis()->GetXmax(); | |
701 | fitres = h->Fit(fitFunc, "q0", "", fitMin, fitMax); | |
702 | if (fitres != 0) return fitres; | |
703 | } | |
704 | return fitres; | |
705 | } |