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[u/mrichter/AliRoot.git] / T0 / AliT0CalibWalk.cxx
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a2ad8166 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 **************************************************************************/
271b5bd3 15
a2ad8166 16/* $Id$ */
17
18///////////////////////////////////////////////////////////////////////////////
19// //
20// class T0 walk correction Alla Maevskaya alla@inr.ru 20.11.2007 //
21// //
22///////////////////////////////////////////////////////////////////////////////
23
24#include "AliT0CalibWalk.h"
a2ad8166 25#include "AliLog.h"
a2ad8166 26
27#include <TObjArray.h>
28#include <TGraph.h>
29#include <TFile.h>
a2ad8166 30#include <TH2F.h>
31#include <TMath.h>
32#include <TSystem.h>
33#include <Riostream.h>
34#include <TSpectrum.h>
a2ad8166 35#include <TProfile.h>
8f1790c4 36#include <TF1.h>
a2ad8166 37
cdf48647 38using std::cout;
39using std::endl;
a2ad8166 40ClassImp(AliT0CalibWalk)
41
42//________________________________________________________________
43 AliT0CalibWalk::AliT0CalibWalk(): TNamed(),
44 fWalk(0),
c883fdf2 45 fAmpLEDRec(0),
46 fQTC(0),
47 fAmpLED(0)
a2ad8166 48{
49 //
50}
51
52//________________________________________________________________
53AliT0CalibWalk::AliT0CalibWalk(const char* name):TNamed(),
54 fWalk(0),
c883fdf2 55 fAmpLEDRec(0), fQTC(0),
56 fAmpLED(0)
57
a2ad8166 58{
59 TString namst = "Calib_";
60 namst += name;
61 SetName(namst.Data());
62 SetTitle(namst.Data());
63
64}
65
66//________________________________________________________________
67AliT0CalibWalk::AliT0CalibWalk(const AliT0CalibWalk& calibda) :
68 TNamed(calibda),
69 fWalk(0),
c883fdf2 70 fAmpLEDRec(0),
71 fQTC(0),
72 fAmpLED(0)
73
a2ad8166 74{
75// copy constructor
76 SetName(calibda.GetName());
77 SetTitle(calibda.GetName());
78
79
80}
81
82//________________________________________________________________
83AliT0CalibWalk &AliT0CalibWalk::operator =(const AliT0CalibWalk& calibda)
84{
85// assignment operator
86 SetName(calibda.GetName());
87 SetTitle(calibda.GetName());
88
89 return *this;
90}
91
92//________________________________________________________________
93AliT0CalibWalk::~AliT0CalibWalk()
94{
95 //
96}
d95247c3 97//________________________________________________________________
a2ad8166 98
d95247c3 99Bool_t AliT0CalibWalk::MakeWalkCorrGraph(const char *laserFile)
a2ad8166 100{
7576945f 101 //make walk corerction for preprocessor
f1799eed 102 Float_t sigma,cfdmean, qtmean, ledmean;
d95247c3 103 Bool_t ok=true;
f1799eed 104 Float_t mips[50];
d95247c3 105
c2337900 106 gFile = TFile::Open(laserFile);
6318dd46 107 if(!gFile) {
108 AliError("No input laser data found ");
109 }
110 else
111 {
8f1790c4 112 // gFile->ls();
d95247c3 113 TH1F* hAmp = (TH1F*) gFile->Get("hAmpLaser");
114 Int_t nmips=0;
f1799eed 115 for (Int_t ibin=0; ibin<2000; ibin++) {
d95247c3 116 Float_t bincont = hAmp->GetBinContent(ibin);
117 if(bincont>0){
118 mips[nmips] = hAmp->GetXaxis()->GetBinCenter(ibin);
119 cout<<ibin<<" bincont "<<bincont<<" amp "<< mips[nmips]<<endl;
120 nmips++;
121 }
c69fcbc1 122 }
123
f1799eed 124 if (nmips<17) {
07342b9d 125 ok=false;
126 return ok;
f1799eed 127 }
128
c69fcbc1 129 Float_t x1[50], y1[50];
130 Float_t x2[50], xx2[50],y2[50];
131 Float_t xx1[50],yy1[50], xx[50];
95f63b36 132
f1799eed 133 Float_t cfd0 = 0;
95f63b36 134
f1799eed 135 for (Int_t ii=0; ii<nmips; ii++)
136 x1[ii] = y1[ii] = x2[ii] = y2[ii] = 0;
95f63b36 137
138 for (Int_t i=0; i<24; i++)
c883fdf2 139 {
f1799eed 140 cfd0 = 0;
141 for (Int_t im=0; im<nmips; im++)
8f1790c4 142 {
d95247c3 143 TString cfd = Form("hCFD%i_%i",i+1,im+1);
144 TString qtc = Form("hQTC%i_%i",i+1,im+1);
3740a735 145 TString led = Form("hLED%i_%i",i+1,im+1);
95f63b36 146
d95247c3 147 TH1F *hCFD = (TH1F*) gFile->Get(cfd.Data()) ;
148 TH1F *hLED = (TH1F*) gFile->Get(led.Data());
149 TH1F *hQTC = (TH1F*) gFile->Get(qtc.Data()) ;
f1799eed 150 // hCFD->SetDirectory(0);
151 // hQTC->SetDirectory(0);
152 // hLED->SetDirectory(0);
d95247c3 153 if(!hCFD )
154 AliWarning(Form(" no CFD data in LASER DA for channel %i for amplitude %f MIPs",i,mips[im]));
155 if(!hQTC )
156 AliWarning(Form(" no QTC correction data in LASER DA for channel %i for amplitude %f MIPs",i,mips[im]));
157 if(!hLED)
158 AliWarning(Form(" no LED correction data in LASER DA for channel %i for amplitude %f MIPs",i,mips[im]));
f1799eed 159 if( hCFD && hCFD->GetEntries()<500 ) {
160 ok=false;
161 printf("no peak in CFD spectrum for PMT %i amplitude %i\n",i,im);
162 return ok;
163 }
164 if(hCFD && hCFD->GetEntries()>500 ) {
165 if( hCFD->GetRMS() >= 1.5)
166 GetMeanAndSigma(hCFD, cfdmean, sigma);
8704b209 167 else
f1799eed 168 cfdmean = hCFD->GetMean();
8704b209 169
f1799eed 170 Int_t maxBin = hCFD->GetMaximumBin();
171 Double_t meanEstimate = hCFD->GetBinCenter( maxBin);
172 if(TMath::Abs(meanEstimate - cfdmean) > 20 ) cfdmean = meanEstimate;
173 if (im == 0) cfd0 = cfdmean;
174 y1[im] = cfdmean - cfd0;
175 }
176 if(hQTC && hQTC->GetEntries()>500) {
177 GetMeanAndSigma(hQTC, qtmean, sigma);
178
179 x1[im] = qtmean;
8704b209 180 if( x1[im] == 0) {
07342b9d 181 ok=false;
8704b209 182 printf("no peak in QTC signal for PMT %i amplitude %i\n",i,im);
07342b9d 183 return ok;
95f63b36 184 }
c5a24053 185 }
f1799eed 186
187 if( hLED && hLED->GetEntries()>500) {
188 GetMeanAndSigma(hLED, ledmean, sigma);
189 }
190 else
191 {
192 ok=false;
193 printf("no peak in LED spectrum for PMT %i amplitude %i\n",i,im);
194 return ok;
195 }
196 x2[im] = ledmean;
197 xx2[im] = x2[nmips-im-1];
198
199 xx[im]=mips[im];
200 if (hQTC) delete hQTC;
201 if (hCFD) delete hCFD;
202 if (hLED) delete hLED;
203
e47b556f 204 }
d95247c3 205
8f1790c4 206 for (Int_t imi=0; imi<nmips; imi++)
95f63b36 207 {
8f1790c4 208 yy1[imi] = Float_t (mips[nmips-imi-1]);
209 xx1[imi] = x2[nmips-imi-1];
d95247c3 210 // cout<<" LED rev "<<i<<" "<<imi<<" "<<xx1[imi]<<" "<< yy1[imi]<<"nmips-imi-1 = "<< nmips-imi-1<<endl;
95f63b36 211 }
95f63b36 212
d95247c3 213 if(i==0) cout<<"Making graphs..."<<endl;
c5a24053 214
f1799eed 215 TGraph *grwalkqtc = new TGraph (nmips,x1,y1);
216 grwalkqtc->SetTitle(Form("PMT%i",i));
217 TGraph *grwalkled = new TGraph (nmips,x2,y1);
218 grwalkled->SetTitle(Form("PMT%i",i));
219 fWalk.AddAtAndExpand(grwalkqtc,i);
220 fAmpLEDRec.AddAtAndExpand(grwalkled,i);
221 // cout<<" add walk "<<i<<endl;
c5a24053 222
f1799eed 223 //fit amplitude graphs to make comparison wth new one
224 TGraph *grampled = new TGraph (nmips,xx1,yy1);
225 TGraph *grqtc = new TGraph (nmips,x1,xx);
226 fQTC.AddAtAndExpand(grqtc,i);
227 fAmpLED.AddAtAndExpand(grampled,i);
228 // cout<<" add amp "<<i<<endl;
229
230 if(i==23)
231 cout<<"Graphs created..."<<endl;
232 }
6318dd46 233 } //if gFile exits
07342b9d 234
d95247c3 235 return ok;
a2ad8166 236}
f1799eed 237
ff49b4c0 238void AliT0CalibWalk::GetMeanAndSigma(TH1F* hist, Float_t &mean, Float_t &sigma)
239{
240
657abde7 241 const double window = 2.; //fit window
ff49b4c0 242
243 double meanEstimate, sigmaEstimate;
244 int maxBin;
245 maxBin = hist->GetMaximumBin(); //position of maximum
246 meanEstimate = hist->GetBinCenter( maxBin); // mean of gaussian sitting in maximum
247 sigmaEstimate = hist->GetRMS();
248 TF1* fit= new TF1("fit","gaus", meanEstimate - window*sigmaEstimate, meanEstimate + window*sigmaEstimate);
249 fit->SetParameters(hist->GetBinContent(maxBin), meanEstimate, sigmaEstimate);
250 hist->Fit("fit","RQ","Q");
251
252 mean = (Float_t) fit->GetParameter(1);
253 sigma = (Float_t) fit->GetParameter(2);
c5a24053 254 printf(" mean %f max %f sigma %f \n",mean, meanEstimate , sigma);
ff49b4c0 255
256 delete fit;
257}
c883fdf2 258
259
260