2 /**************************************************************************
3 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
5 * Author: The ALICE Off-line Project. *
6 * Contributors are mentioned in the code where appropriate. *
8 * Permission to use, copy, modify and distribute this software and its *
9 * documentation strictly for non-commercial purposes is hereby granted *
10 * without fee, provided that the above copyright notice appears in all *
11 * copies and that both the copyright notice and this permission notice *
12 * appear in the supporting documentation. The authors make no claims *
13 * about the suitability of this software for any purpose. It is *
14 * provided "as is" without express or implied warranty. *
15 **************************************************************************/
19 ///////////////////////////////////////////////////////////////////////////////
21 // class for T0 calibration TM-AC-AM_6-02-2006
22 // equalize time shift for each time CFD channel
24 ///////////////////////////////////////////////////////////////////////////////
26 #include "AliT0CalibTimeEq.h"
31 #include <TSpectrum.h>
35 ClassImp(AliT0CalibTimeEq)
37 //________________________________________________________________
38 AliT0CalibTimeEq::AliT0CalibTimeEq():TNamed(),
46 //________________________________________________________________
47 AliT0CalibTimeEq::AliT0CalibTimeEq(const char* name):TNamed(),
53 TString namst = "Calib_";
55 SetName(namst.Data());
56 SetTitle(namst.Data());
59 //________________________________________________________________
60 AliT0CalibTimeEq::AliT0CalibTimeEq(const AliT0CalibTimeEq& calibda):TNamed(calibda),
65 SetName(calibda.GetName());
66 SetTitle(calibda.GetName());
71 //________________________________________________________________
72 AliT0CalibTimeEq &AliT0CalibTimeEq::operator =(const AliT0CalibTimeEq& calibda)
74 // assignment operator
75 SetName(calibda.GetName());
76 SetTitle(calibda.GetName());
81 //________________________________________________________________
82 AliT0CalibTimeEq::~AliT0CalibTimeEq()
87 //________________________________________________________________
88 void AliT0CalibTimeEq::Reset()
92 memset(fCFDvalue,0,120*sizeof(Float_t));
93 memset(fTimeEq,1,24*sizeof(Float_t));
97 //________________________________________________________________
98 void AliT0CalibTimeEq::Print(Option_t*) const
102 printf("\n ---- PM Arrays ----\n\n");
103 printf(" Time delay CFD \n");
104 for (Int_t i=0; i<24; i++) printf(" CFD %f ",fTimeEq[i]);
105 printf("\n Mean Vertex %f \n", fMeanVertex);
109 //________________________________________________________________
110 Bool_t AliT0CalibTimeEq::ComputeOnlineParams(const char* filePhys)
112 // compute online equalized time
113 Float_t meandiff, sigmadiff, meanver, meancfdtime, sigmacfdtime;
114 meandiff = sigmadiff = meanver = meancfdtime = sigmacfdtime =0;
118 gFile = TFile::Open(filePhys);
120 AliError("No input PHYS data found ");
125 for (Int_t i=0; i<24; i++)
128 meandiff = sigmadiff = meanver = meancfdtime = sigmacfdtime =0;
129 TH1F *cfd = (TH1F*) gFile->Get(Form("CFD1minCFD%d",i+1));
130 TH1F *cfdtime = (TH1F*) gFile->Get(Form("CFD%d",i+1));
132 AliWarning(Form("no Diff histograms collected by PHYS DA for channel %i", i));
135 AliWarning(Form("no CFD histograms collected by PHYS DA for channel %i", i));
138 nent = Int_t(cfd->GetEntries());
140 if(cfd->GetRMS()>1.5 )
141 GetMeanAndSigma(cfd, meandiff, sigmadiff);
142 if(cfd->GetRMS()<=1.5)
144 meandiff = cfd->GetMean();
145 sigmadiff=cfd->GetRMS();
147 Int_t maxBin = cfd->GetMaximumBin();
148 Double_t meanEstimate = cfd->GetBinCenter( maxBin);
149 if(TMath::Abs(meanEstimate - meandiff) > 20 ) meandiff = meanEstimate;
154 AliWarning(Form(" Not enouph data in PMT %i- PMT1: %i ", i, nent));
158 nent = Int_t(cfdtime->GetEntries());
159 if(nent > 50 ) { //!!!!!!!!!!
160 if(cfdtime->GetRMS()>1.5 )
161 GetMeanAndSigma(cfdtime,meancfdtime, sigmacfdtime);
162 if(cfdtime->GetRMS()<=1.5)
164 meancfdtime = cfdtime->GetMean();
165 sigmacfdtime = cfdtime->GetRMS();
167 Int_t maxBin = cfdtime->GetMaximumBin();
168 Double_t meanEstimate = cfdtime->GetBinCenter( maxBin);
169 if(TMath::Abs(meanEstimate - meancfdtime) > 20 ) meancfdtime = meanEstimate;
174 AliWarning(Form(" Not enouph data in PMT in CFD peak %i - %i ", i, nent));
177 SetTimeEq(i,meandiff);
178 SetTimeEqRms(i,sigmadiff);
179 SetCFDvalue(i,0,meancfdtime);
181 if (cfdtime) delete cfdtime;
184 TH1F *ver = (TH1F*) gFile->Get("hVertex");
186 meanver = ver->GetMean();
187 rmsver = ver->GetRMS();
189 SetMeanVertex(meanver);
190 SetRmsVertex(rmsver);
199 //________________________________________________________________
200 Bool_t AliT0CalibTimeEq::ComputeOfflineParams(const char* filePhys, Float_t *timecdb, Float_t *cfdvalue, Int_t badpmt)
202 // compute offline equalized time
203 Float_t meandiff, sigmadiff, meanver, meancfdtime, sigmacfdtime;
204 meandiff = sigmadiff = meanver = meancfdtime = sigmacfdtime =0;
207 TH1F *cfddiff = NULL;
208 TH1F *cfdtime = NULL;
209 TObjArray * TzeroObj = NULL;
211 gFile = TFile::Open(filePhys);
213 AliError("No input PHYS data found ");
218 meandiff = sigmadiff = meanver = meancfdtime = sigmacfdtime =0;
220 TDirectory *dr = (TDirectory*) gFile->Get("T0Calib");
221 if (dr) TzeroObj = (TObjArray*) dr->Get("T0Calib");
223 for (Int_t i=0; i<24; i++)
227 cfddiff = (TH1F*)TzeroObj->FindObject(Form("CFD1minCFD%d",i+1));
228 cfdtime = (TH1F*)TzeroObj->FindObject(Form("CFD%d",i+1));
232 cfddiff = (TH1F*)gFile->Get(Form("CFD1minCFD%d",i+1));
233 cfdtime = (TH1F*)gFile->Get(Form("CFD%d",i+1));
237 AliWarning(Form("no histograms collected by pass0 for diff channel %i", i));
238 SetTimeEq(i,timecdb[i]);
242 nent = Int_t(cfddiff->GetEntries());
243 if(nent>100 ) { //!!!!!
244 if(cfddiff->GetRMS()>1.5 )
245 GetMeanAndSigma(cfddiff, meandiff, sigmadiff);
246 if(cfddiff->GetRMS()<=1.5)
248 meandiff = cfddiff->GetMean();
249 sigmadiff = cfddiff->GetRMS();
251 Int_t maxBin = cfddiff->GetMaximumBin();
252 Double_t meanEstimate = cfddiff->GetBinCenter( maxBin);
253 if(TMath::Abs(meanEstimate - meandiff) > 20 ) meandiff = meanEstimate;
257 AliWarning(Form(" Not enouph data in PMT %i- PMT1: %i ", i, nent));
258 SetTimeEq(i,timecdb[i]);
265 AliWarning(Form("no histograms collected by pass0 for time channel %i", i));
266 SetTimeEq(i, cfdvalue[i]);
270 nent = Int_t(cfdtime->GetEntries());
271 if(nent>100 ) { //!!!!!
272 if(cfdtime->GetRMS()>1.5 )
273 GetMeanAndSigma(cfdtime,meancfdtime, sigmacfdtime);
274 if(cfdtime->GetRMS()<=1.5)
276 meancfdtime = cfdtime->GetMean();
277 sigmacfdtime=cfdtime->GetRMS();
279 Int_t maxBin = cfdtime->GetMaximumBin();
280 Double_t meanEstimate = cfdtime->GetBinCenter( maxBin);
281 if(TMath::Abs(meanEstimate - meancfdtime) > 20 ) meancfdtime = meanEstimate;
285 AliWarning(Form(" Not enouph data in PMT in CFD peak %i - %i ", i, nent));
286 SetTimeEq(i, cfdvalue[i]);
291 SetTimeEq(i,timecdb[i] + meandiff);
292 SetTimeEqRms(i,sigmadiff);
293 SetCFDvalue(i,0, meancfdtime );
294 if (cfddiff) cfddiff->Reset();
295 if (cfdtime) cfdtime->Reset();
306 //________________________________________________________________________
307 void AliT0CalibTimeEq::GetMeanAndSigma(TH1F* hist, Float_t &mean, Float_t &sigma) {
309 const double window = 2.; //fit window
311 double meanEstimate, sigmaEstimate;
313 maxBin = hist->GetMaximumBin(); //position of maximum
314 meanEstimate = hist->GetBinCenter( maxBin); // mean of gaussian sitting in maximum
315 // sigmaEstimate = hist->GetRMS();
317 TF1* fit= new TF1("fit","gaus", meanEstimate - window*sigmaEstimate, meanEstimate + window*sigmaEstimate);
318 fit->SetParameters(hist->GetBinContent(maxBin), meanEstimate, sigmaEstimate);
319 hist->Fit("fit","RQ","Q");
321 mean = (Float_t) fit->GetParameter(1);
322 sigma = (Float_t) fit->GetParameter(2);