1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
18 ///////////////////////////////////////////////////////////////////////////////
20 // class for T0 calibration TM-AC-AM_6-02-2006
21 // equalize time shift for each time CFD channel
23 ///////////////////////////////////////////////////////////////////////////////
25 #include "AliT0CalibTimeEq.h"
30 #include <TSpectrum.h>
34 ClassImp(AliT0CalibTimeEq)
36 //________________________________________________________________
37 AliT0CalibTimeEq::AliT0CalibTimeEq():TNamed(),
45 //________________________________________________________________
46 AliT0CalibTimeEq::AliT0CalibTimeEq(const char* name):TNamed(),
52 TString namst = "Calib_";
54 SetName(namst.Data());
55 SetTitle(namst.Data());
58 //________________________________________________________________
59 AliT0CalibTimeEq::AliT0CalibTimeEq(const AliT0CalibTimeEq& calibda):TNamed(calibda),
64 SetName(calibda.GetName());
65 SetTitle(calibda.GetName());
70 //________________________________________________________________
71 AliT0CalibTimeEq &AliT0CalibTimeEq::operator =(const AliT0CalibTimeEq& calibda)
73 // assignment operator
74 SetName(calibda.GetName());
75 SetTitle(calibda.GetName());
80 //________________________________________________________________
81 AliT0CalibTimeEq::~AliT0CalibTimeEq()
86 //________________________________________________________________
87 void AliT0CalibTimeEq::Reset()
91 memset(fCFDvalue,0,120*sizeof(Float_t));
92 memset(fTimeEq,1,24*sizeof(Float_t));
96 //________________________________________________________________
97 void AliT0CalibTimeEq::Print(Option_t*) const
101 printf("\n ---- PM Arrays ----\n\n");
102 printf(" Time delay CFD \n");
103 for (Int_t i=0; i<24; i++) printf(" CFD %f ",fTimeEq[i]);
104 printf("\n Mean Vertex %f \n", fMeanVertex);
108 //________________________________________________________________
109 Bool_t AliT0CalibTimeEq::ComputeOnlineParams(const char* filePhys)
111 // compute online equalized time
112 Float_t meandiff, sigmadiff, meanver, meancfdtime, sigmacfdtime;
113 meandiff = sigmadiff = meanver = meancfdtime = sigmacfdtime =0;
117 gFile = TFile::Open(filePhys);
119 AliError("No input PHYS data found ");
124 for (Int_t i=0; i<24; i++)
126 meandiff = sigmadiff = meanver = meancfdtime = sigmacfdtime =0;
127 TH1F *cfd = (TH1F*) gFile->Get(Form("CFD1minCFD%d",i+1));
128 TH1F *cfdtime = (TH1F*) gFile->Get(Form("CFD%d",i+1));
129 if(!cfd) AliWarning(Form("no Diff histograms collected by PHYS DA for channel %i", i));
130 if(!cfdtime) AliWarning(Form("no CFD histograms collected by PHYS DA for channel %i", i));
132 nent = Int_t(cfd->GetEntries());
134 if(cfd->GetRMS()>1.5 )
135 GetMeanAndSigma(cfd, meandiff, sigmadiff);
136 if(cfd->GetRMS()<=1.5)
138 meandiff = cfd->GetMean();
139 sigmadiff=cfd->GetRMS();
141 if(TMath::Abs(cfd->GetMean() - meandiff) >10 ) meandiff = cfd->GetMean();
146 AliWarning(Form(" Not enouph data in PMT %i- PMT1: %i ", i, nent));
148 if(!cfd) AliWarning(Form("no CFD histograms collected by PHYS DA for channel %i", i));
150 // printf(" i = %d buf1 = %s\n", i, buf1);
152 nent = Int_t(cfdtime->GetEntries());
153 if(nent > 500 ) { //!!!!!!!!!!
154 if(cfdtime->GetRMS()>1.5 )
155 GetMeanAndSigma(cfdtime,meancfdtime, sigmacfdtime);
156 if(cfdtime->GetRMS()<=1.5)
158 meancfdtime = cfdtime->GetMean();
159 sigmacfdtime = cfdtime->GetRMS();
161 if(TMath::Abs(cfdtime->GetMean() - meancfdtime) >20 ) meancfdtime = cfdtime->GetMean();
167 AliWarning(Form(" Not enouph data in PMT in CFD peak %i - %i ", i, nent));
169 printf(" %i %f %f %f %f \n",i, meandiff, sigmadiff, meancfdtime, sigmacfdtime);
170 SetTimeEq(i,meandiff);
171 SetTimeEqRms(i,sigmadiff);
172 SetCFDvalue(i,0,meancfdtime);
174 if (cfdtime) delete cfdtime;
177 TH1F *ver = (TH1F*) gFile->Get("hVertex");
178 if(!ver) AliWarning("no T0 histogram collected by PHYS DA ");
180 meanver = ver->GetMean();
181 rmsver = ver->GetRMS();
183 SetMeanVertex(meanver);
184 SetRmsVertex(rmsver);
193 //________________________________________________________________
194 Bool_t AliT0CalibTimeEq::ComputeOfflineParams(const char* filePhys, Float_t *timecdb, Float_t *cfdvalue, Int_t badpmt)
196 // compute online equalized time
197 Float_t meandiff, sigmadiff, meanver, meancfdtime, sigmacfdtime;
198 meandiff = sigmadiff = meanver = meancfdtime = sigmacfdtime =0;
202 gFile = TFile::Open(filePhys);
204 AliError("No input PHYS data found ");
210 meandiff = sigmadiff = meanver = meancfdtime = sigmacfdtime =0;
212 TDirectory *dr = (TDirectory*) gFile->Get("T0Calib");
213 if (!dr ) { AliError("No input T0calib found ");
216 TObjArray * TzeroObj = (TObjArray*) dr->Get("fTzeroObject");
217 for (Int_t i=0; i<24; i++)
219 printf("@@@ were in OCDB before %f \n", timecdb[i]);
221 TH1F *cfddiff = (TH1F*)TzeroObj->At(i);
222 TH1F *cfdtime = (TH1F*)TzeroObj->At(i+24);
223 if(!cfddiff) AliWarning(Form("no Diff histograms collected by PHYS DA for channel %i", i));
224 // printf(" i = %d buf1 = %s\n", i, buf1);
225 if(!cfdtime) AliWarning(Form("no CFD histograms collected by PHYS DA for channel %i", i));
227 nent = Int_t(cfddiff->GetEntries());
228 if(nent>500 ) { //!!!!!
229 if(cfddiff->GetRMS()>1.5 )
230 GetMeanAndSigma(cfddiff, meandiff, sigmadiff);
231 if(cfddiff->GetRMS()<=1.5)
233 meandiff = cfddiff->GetMean();
234 sigmadiff = cfddiff->GetRMS();
236 if(TMath::Abs(cfddiff->GetMean() - meandiff) >10 ) meandiff = cfddiff->GetMean();
242 AliWarning(Form(" Not enouph data in PMT %i- PMT1: %i ", i, nent));
246 nent = Int_t(cfdtime->GetEntries());
247 if(nent>500 ) { //!!!!!
248 if(cfdtime->GetRMS()>1.5 )
249 GetMeanAndSigma(cfdtime,meancfdtime, sigmacfdtime);
250 if(cfdtime->GetRMS()<=1.5)
252 meancfdtime = cfdtime->GetMean();
253 sigmacfdtime=cfdtime->GetRMS();
255 if(TMath::Abs(cfdtime->GetMean() - meancfdtime) >20 ) meancfdtime = cfdtime->GetMean();
260 AliWarning(Form(" Not enouph data in PMT in CFD peak %i - %i ", i, nent));
263 SetTimeEq(i,timecdb[i] + meandiff);
264 SetTimeEqRms(i,sigmadiff);
265 SetCFDvalue(i,0,cfdvalue[i] + meancfdtime );
266 //SetCFDvalue(i,0,cfdvalue[i] );
267 if (cfddiff) delete cfddiff;
268 if (cfdtime) delete cfdtime;
271 TH1F *ver = (TH1F*) gFile->Get("hVertex");
272 if(!ver) AliWarning("no T0 histogram collected by PHYS DA ");
274 meanver = ver->GetMean();
275 rmsver = ver->GetRMS();
277 SetMeanVertex(meanver);
278 SetRmsVertex(rmsver);
287 //________________________________________________________________________
288 void AliT0CalibTimeEq::GetMeanAndSigma(TH1F* hist, Float_t &mean, Float_t &sigma) {
290 const double window = 2.; //fit window
292 double meanEstimate, sigmaEstimate;
294 maxBin = hist->GetMaximumBin(); //position of maximum
295 meanEstimate = hist->GetBinCenter( maxBin); // mean of gaussian sitting in maximum
296 sigmaEstimate = hist->GetRMS();
297 TF1* fit= new TF1("fit","gaus", meanEstimate - window*sigmaEstimate, meanEstimate + window*sigmaEstimate);
298 fit->SetParameters(hist->GetBinContent(maxBin), meanEstimate, sigmaEstimate);
299 hist->Fit("fit","RQ","Q");
301 mean = (Float_t) fit->GetParameter(1);
302 sigma = (Float_t) fit->GetParameter(2);