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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 | } | |
350 | /* get histo list */ | |
351 | TList *list = (TList *)file->Get("Histos"); | |
352 | if (!list) { | |
353 | AliError(Form("cannot get \"Histos\" list from file %s", filename)); | |
354 | return kFALSE; | |
355 | } | |
356 | /* get histos */ | |
357 | TH2F *histoVertexTimestamp = (TH2F *)list->FindObject("hHistoVertexTimestamp"); | |
358 | if (!histoVertexTimestamp) { | |
359 | AliError(Form("cannot get \"hHistoVertexTimestamp\" object from file %s", filename)); | |
360 | return kFALSE; | |
361 | } | |
362 | TH2F *histoDeltatTimestamp = (TH2F *)list->FindObject("hHistoDeltatTimestamp"); | |
363 | if (!histoDeltatTimestamp) { | |
364 | AliError(Form("cannot get \"hHistoDeltatTimestamp\" object from file %s", filename)); | |
365 | return kFALSE; | |
366 | } | |
367 | TH2F *histoDeltazEta = (TH2F *)list->FindObject("hHistoDeltazEta"); | |
368 | if (!histoDeltazEta) { | |
369 | AliError(Form("cannot get \"hHistoDeltazEta\" object from file %s", filename)); | |
370 | return kFALSE; | |
371 | } | |
372 | TH2F *histoDeltazCosTheta = (TH2F *)list->FindObject("hHistoDeltazCosTheta"); | |
373 | if (!histoDeltazCosTheta) { | |
374 | AliError(Form("cannot get \"hHistoDeltazCosTheta\" object from file %s", filename)); | |
375 | return kFALSE; | |
376 | } | |
377 | TH2F *histoAcceptedTracksEtaPt = (TH2F *)list->FindObject("hHistoAcceptedTracksEtaPt"); | |
378 | if (!histoAcceptedTracksEtaPt) { | |
379 | AliError(Form("cannot get \"hHistoAccptedTracksEtaPt\" object from file %s", filename)); | |
380 | return kFALSE; | |
381 | } | |
382 | TH2F *histoMatchedTracksEtaPt = (TH2F *)list->FindObject("hHistoMatchedTracksEtaPt"); | |
383 | if (!histoMatchedTracksEtaPt) { | |
384 | AliError(Form("cannot get \"hHistoMatchedTracksEtaPt\" object from file %s", filename)); | |
385 | return kFALSE; | |
386 | } | |
387 | /* check matching performance */ | |
388 | if (!CheckMatchingPerformance(histoDeltazEta, histoAcceptedTracksEtaPt, histoMatchedTracksEtaPt)) { | |
389 | AliError("error while checking matching efficiency"); | |
390 | return kFALSE; | |
391 | } | |
392 | /* calibrate and store */ | |
393 | if (!CalibrateAndStore(histoVertexTimestamp, histoDeltatTimestamp, dbString)) { | |
394 | AliError("error while calibrating and storing"); | |
395 | return kFALSE; | |
396 | } | |
397 | ||
398 | /* success */ | |
399 | return kTRUE; | |
400 | } | |
401 | ||
402 | //_______________________________________________________ | |
403 | ||
404 | Bool_t | |
405 | AliTOFAnalysisTaskCalibPass0::CheckMatchingPerformance(const TH2F *histoDeltazCosTheta, const TH2F *histoAcceptedTracksEtaPt, const TH2F *histoMatchedTracksEtaPt) const | |
406 | { | |
407 | /* | |
408 | * check matching performance | |
409 | */ | |
410 | ||
411 | /* check pointers */ | |
412 | if (!histoDeltazCosTheta || !histoAcceptedTracksEtaPt || !histoMatchedTracksEtaPt) | |
413 | return kFALSE; | |
414 | /* dummy for the time being */ | |
415 | return kTRUE; | |
416 | } | |
417 | ||
418 | //_______________________________________________________ | |
419 | ||
420 | Bool_t | |
421 | AliTOFAnalysisTaskCalibPass0::CalibrateAndStore(TH2F *histoVertexTimestamp, TH2F *histoDeltatTimestamp, const Char_t *dbString) | |
422 | { | |
423 | /* | |
424 | * calibrate and store | |
425 | */ | |
426 | ||
427 | /* check pointers */ | |
428 | if (!histoVertexTimestamp || !histoDeltatTimestamp) | |
429 | return kFALSE; | |
430 | ||
431 | /*** GET RUN-NUMBER AND START-TIMESTAMP ***/ | |
432 | ||
433 | TString str; | |
434 | TObjArray *strarr = NULL; | |
435 | TObjString *ostr = NULL; | |
436 | str = histoVertexTimestamp->GetTitle(); | |
437 | strarr = str.Tokenize(","); | |
438 | if (!strarr) { | |
439 | AliError("problems whith tokenize histogram title"); | |
440 | return kFALSE; | |
441 | } | |
442 | ||
443 | /* run number */ | |
444 | ostr = (TObjString *)strarr->At(0); | |
445 | if (!ostr) { | |
446 | AliError("problems while getting run number from histogram title"); | |
447 | return kFALSE; | |
448 | } | |
449 | str = ostr->GetString(); | |
450 | if (!str.BeginsWith("run:")) { | |
451 | AliError("problems while getting run number from histogram title"); | |
452 | return kFALSE; | |
453 | } | |
454 | str.Remove(0, 5); | |
455 | Int_t runNb = atoi(str.Data()); | |
456 | if (runNb <= 0) { | |
457 | AliError(Form("bad run number: %d", runNb)); | |
458 | return kFALSE; | |
459 | } | |
460 | AliInfo(Form("got run number: %d", runNb)); | |
461 | ||
462 | /* start timestamp */ | |
463 | ostr = (TObjString *)strarr->At(1); | |
464 | if (!ostr) { | |
465 | AliError("problems while getting start timestamp from histogram title"); | |
466 | return kFALSE; | |
467 | } | |
468 | str = ostr->GetString(); | |
469 | str.Remove(0, 1); /* remove empty space at the beginning */ | |
470 | if (!str.BeginsWith("startTimestamp:")) { | |
471 | AliError("problems while getting start timestamp from histogram title"); | |
472 | return kFALSE; | |
473 | } | |
474 | str.Remove(0, 16); | |
475 | UInt_t startTimestamp = atoi(str.Data()); | |
476 | if (startTimestamp <= 0) { | |
477 | AliError(Form("bad start timestamp: %d", startTimestamp)); | |
478 | return kFALSE; | |
479 | } | |
480 | TTimeStamp ts = startTimestamp; | |
481 | AliInfo(Form("got start timestamp: %d (%s)", startTimestamp, ts.AsString())); | |
482 | ||
483 | /*** CALIBRATION STAGE ***/ | |
484 | ||
485 | /* get fit function */ | |
486 | TF1 *fitFunc = (TF1 *)gROOT->GetFunction("gaus"); | |
487 | ||
488 | /* projection-x */ | |
489 | TH1D *histoVertexTimestamppx = histoVertexTimestamp->ProjectionX("histoVertexTimestamppx"); | |
490 | TH1D *histoDeltatTimestamppx = histoDeltatTimestamp->ProjectionX("histoDeltatTimestamppx"); | |
491 | ||
492 | /* define mix and max time bin */ | |
493 | Int_t minBin = histoVertexTimestamppx->FindFirstBinAbove(0); | |
494 | Int_t maxBin = histoVertexTimestamppx->FindLastBinAbove(0); | |
495 | Float_t minTime = histoVertexTimestamppx->GetBinLowEdge(minBin); | |
496 | Float_t maxTime = histoVertexTimestamppx->GetBinLowEdge(maxBin + 1); | |
497 | AliInfo(Form("min/max time defined: %d < t < %d s [%d, %d]", (Int_t)minTime, (Int_t)maxTime, minBin, maxBin)); | |
498 | ||
499 | /* loop over time bins */ | |
500 | Int_t nPoints = 0; | |
501 | Float_t time[fgkMaxNumberOfPoints], timeerr[fgkMaxNumberOfPoints]; | |
502 | Float_t vertexMean[fgkMaxNumberOfPoints], vertexMeanerr[fgkMaxNumberOfPoints]; | |
503 | Float_t vertexSigma[fgkMaxNumberOfPoints], vertexSigmaerr[fgkMaxNumberOfPoints]; | |
504 | Float_t timeZeroMean[fgkMaxNumberOfPoints], timeZeroMeanerr[fgkMaxNumberOfPoints]; | |
505 | Float_t timeZeroSigma[fgkMaxNumberOfPoints], timeZeroSigmaerr[fgkMaxNumberOfPoints]; | |
506 | Float_t averageTimeZero = 0.; | |
507 | Float_t averageTimeSigma = 0.; | |
508 | Float_t averageVertexSpread = 0.; | |
509 | for (Int_t ibin = minBin; ibin <= maxBin; ibin++) { | |
510 | ||
511 | /* define time window */ | |
512 | Int_t startBin = ibin; | |
513 | Int_t endBin = ibin; | |
514 | while(histoVertexTimestamppx->Integral(startBin, endBin) < fgkMinVertexIntegral || | |
515 | histoDeltatTimestamppx->Integral(startBin, endBin) < fgkMinDeltatIntegral) { | |
516 | if (endBin < maxBin) endBin++; | |
517 | else if (startBin > minBin) startBin--; | |
518 | else break; | |
519 | } | |
520 | if (histoVertexTimestamppx->Integral(startBin, endBin) <= 0 || | |
521 | histoDeltatTimestamppx->Integral(startBin, endBin) <= 0) continue; | |
522 | Float_t startTime = histoVertexTimestamppx->GetBinLowEdge(startBin); | |
523 | Float_t endTime = histoVertexTimestamppx->GetBinLowEdge(endBin + 1); | |
524 | Float_t vertexIntegral = histoVertexTimestamppx->Integral(startBin, endBin); | |
525 | Float_t deltatIntegral = histoDeltatTimestamppx->Integral(startBin, endBin); | |
526 | 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)); | |
527 | ||
528 | /* projection-y */ | |
529 | TH1D *histoVertexTimestamppy = histoVertexTimestamp->ProjectionY("histoVertexTimestamppy", startBin, endBin); | |
530 | TH1D *histoDeltatTimestamppy = histoDeltatTimestamp->ProjectionY("histoDeltatTimestamppy", startBin, endBin); | |
531 | ||
532 | /* average time */ | |
533 | histoVertexTimestamppx->GetXaxis()->SetRange(startBin, endBin); | |
534 | time[nPoints] = histoVertexTimestamppx->GetMean(); | |
535 | timeerr[nPoints] = histoVertexTimestamppx->GetMeanError(); | |
536 | ||
537 | /* fit vertex */ | |
538 | if (FitPeak(fitFunc, histoVertexTimestamppy, 10., 3., 3.) != 0) { | |
539 | AliError("troubles fitting vertex, skip"); | |
540 | delete histoVertexTimestamppy; | |
541 | delete histoDeltatTimestamppy; | |
542 | continue; | |
543 | } | |
544 | vertexMean[nPoints] = fitFunc->GetParameter(1); | |
545 | vertexMeanerr[nPoints] = fitFunc->GetParError(1); | |
546 | vertexSigma[nPoints] = fitFunc->GetParameter(2); | |
547 | vertexSigmaerr[nPoints] = fitFunc->GetParError(2); | |
548 | averageVertexSpread += fitFunc->GetParameter(2); | |
549 | ||
550 | /* fit time-zero */ | |
551 | if (FitPeak(fitFunc, histoDeltatTimestamppy, 500., 2., 1.) != 0) { | |
552 | AliError("troubles fitting time-zero TRACKS, skip"); | |
553 | delete histoVertexTimestamppy; | |
554 | delete histoDeltatTimestamppy; | |
555 | continue; | |
556 | } | |
557 | timeZeroMean[nPoints] = fitFunc->GetParameter(1); | |
558 | timeZeroMeanerr[nPoints] = fitFunc->GetParError(1); | |
559 | timeZeroSigma[nPoints] = fitFunc->GetParameter(2); | |
560 | timeZeroSigmaerr[nPoints] = fitFunc->GetParError(2); | |
561 | averageTimeZero += fitFunc->GetParameter(1); | |
562 | averageTimeSigma += fitFunc->GetParameter(2); | |
563 | ||
564 | /* delete projection-y */ | |
565 | delete histoVertexTimestamppy; | |
566 | delete histoDeltatTimestamppy; | |
567 | ||
568 | /* increment n points */ | |
569 | nPoints++; | |
570 | ||
571 | /* set current bin */ | |
572 | ibin = endBin; | |
573 | ||
574 | } /* end of loop over time bins */ | |
575 | ||
576 | /* delete projection-x */ | |
577 | delete histoVertexTimestamppx; | |
578 | delete histoDeltatTimestamppx; | |
579 | ||
580 | /* check points */ | |
581 | if (nPoints <= 0) { | |
582 | AliError("no measurement available, quit"); | |
583 | return kFALSE; | |
584 | } | |
585 | AliInfo(Form("average time-zero = %f", averageTimeZero / nPoints)); | |
586 | AliInfo(Form("average time-sigma = %f", averageTimeSigma / nPoints)); | |
587 | AliInfo(Form("average v-spread = %f", averageVertexSpread / nPoints)); | |
588 | ||
589 | /*** CREATE RUN PARAMS OBJECT ***/ | |
590 | ||
591 | #if 0 | |
592 | /* get start time from GRP */ | |
593 | TGrid::Connect("alien://", 0, 0, "t"); | |
594 | AliCDBManager *cdb = AliCDBManager::Instance(); | |
595 | cdb->SetDefaultStorage("raw://"); | |
596 | cdb->SetRun(runNb); | |
597 | AliGRPManager grp; | |
598 | if (!grp.ReadGRPEntry()) { | |
599 | AliError("error while reading GRP entry"); | |
600 | return kFALSE; | |
601 | } | |
602 | UInt_t startTimestamp = grp.GetGRPData()->GetTimeStart(); | |
603 | TTimeStamp ts; | |
604 | ts = startTimestamp; | |
605 | AliInfo(Form("got start time from GRP: %s", ts.AsString())); | |
606 | #endif | |
607 | ||
608 | /* create arrays */ | |
609 | UInt_t timestamp[fgkMaxNumberOfPoints]; | |
610 | Float_t t0[fgkMaxNumberOfPoints]; | |
611 | Float_t tofReso[fgkMaxNumberOfPoints]; | |
612 | Float_t t0Spread[fgkMaxNumberOfPoints]; | |
613 | for (Int_t ipoint = 0; ipoint < nPoints; ipoint++) { | |
7ca3d6d6 | 614 | timestamp[ipoint] = (UInt_t)time[ipoint] + startTimestamp; |
3c8efc07 | 615 | t0[ipoint] = timeZeroMean[ipoint]; |
616 | tofReso[ipoint] = timeZeroSigma[ipoint]; | |
617 | t0Spread[ipoint] = vertexSigma[ipoint] / 2.99792457999999984e-02; | |
618 | } | |
619 | UInt_t run[1] = {runNb}; | |
620 | UInt_t runFirstPoint[1] = {0}; | |
621 | UInt_t runLastPoint[1] = {nPoints - 1}; | |
622 | ||
623 | /* create run params object */ | |
624 | AliTOFRunParams obj(nPoints, 1); | |
625 | AliInfo(Form("create run params object for run %d with %d points", runNb, nPoints)); | |
626 | obj.SetTimestamp(timestamp); | |
627 | obj.SetT0(t0); | |
628 | obj.SetTOFResolution(tofReso); | |
629 | obj.SetT0Spread(t0Spread); | |
630 | obj.SetRunNb(run); | |
631 | obj.SetRunFirstPoint(runFirstPoint); | |
632 | obj.SetRunLastPoint(runLastPoint); | |
633 | ||
634 | /*** CREATE OCDB ENTRY ***/ | |
635 | ||
636 | if (!dbString) { | |
637 | AliError("cannot store object because of NULL string"); | |
638 | return kFALSE; | |
639 | } | |
640 | ||
641 | /* install run params object in OCDB */ | |
642 | AliCDBManager *cdb = AliCDBManager::Instance(); | |
643 | AliCDBStorage *sto = cdb->GetStorage(dbString); | |
644 | if (!sto) { | |
645 | AliError(Form("cannot get storage %s", dbString)); | |
646 | return kFALSE; | |
647 | } | |
648 | AliCDBId id("TOF/Calib/RunParams", runNb, runNb); | |
649 | AliCDBMetaData md; | |
650 | md.SetResponsible("Roberto Preghenella"); | |
651 | md.SetComment("offline TOF run parameters"); | |
652 | md.SetAliRootVersion(gSystem->Getenv("ARVERSION")); | |
653 | md.SetBeamPeriod(0); | |
654 | if (!sto->Put(&obj, id, &md)) { | |
655 | AliError(Form("error while putting object in storage %s", dbString)); | |
656 | } | |
657 | ||
658 | /* success */ | |
659 | return kTRUE; | |
660 | } | |
661 | ||
662 | //_____________________________________________________________ | |
663 | ||
664 | Int_t | |
665 | AliTOFAnalysisTaskCalibPass0::FitPeak(TF1 *fitFunc, TH1D *h, Float_t startSigma, Float_t nSigmaMin, Float_t nSigmaMax) | |
666 | { | |
667 | /* | |
668 | * fit peak | |
669 | */ | |
670 | ||
671 | Double_t fitCent = h->GetBinCenter(h->GetMaximumBin()); | |
672 | Double_t fitMin = fitCent - nSigmaMin * startSigma; | |
673 | Double_t fitMax = fitCent + nSigmaMax * startSigma; | |
674 | if (fitMin < h->GetXaxis()->GetXmin()) fitMin = h->GetXaxis()->GetXmin(); | |
675 | if (fitMax > h->GetXaxis()->GetXmax()) fitMax = h->GetXaxis()->GetXmax(); | |
676 | fitFunc->SetParameter(1, fitCent); | |
677 | fitFunc->SetParameter(2, startSigma); | |
678 | Int_t fitres = h->Fit(fitFunc, "WWq0", "", fitMin, fitMax); | |
679 | if (fitres != 0) return fitres; | |
680 | /* refit with better range */ | |
681 | for (Int_t i = 0; i < 3; i++) { | |
682 | fitCent = fitFunc->GetParameter(1); | |
683 | fitMin = fitCent - nSigmaMin * fitFunc->GetParameter(2); | |
684 | fitMax = fitCent + nSigmaMax * fitFunc->GetParameter(2); | |
685 | if (fitMin < h->GetXaxis()->GetXmin()) fitMin = h->GetXaxis()->GetXmin(); | |
686 | if (fitMax > h->GetXaxis()->GetXmax()) fitMax = h->GetXaxis()->GetXmax(); | |
687 | fitres = h->Fit(fitFunc, "q0", "", fitMin, fitMax); | |
688 | if (fitres != 0) return fitres; | |
689 | } | |
690 | return fitres; | |
691 | } |