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77ea1c6f | 1 | /************************************************************************** |
2 | * Copyright(c) 2007, 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 | /* $Id$ */ | |
17 | ||
18 | // This class decodes the stream of ALTRO samples to extract | |
19 | // the PHOS "digits" of current event. Uses fitting procedure | |
20 | // to separate reasonable samples | |
21 | // | |
22 | // Typical use case: | |
23 | // AliRawReader* rf = new AliRawReaderDate("2006run2211.raw"); | |
24 | // AliPHOSRawDecoder dc(rf); | |
25 | // while (rf->NextEvent()) { | |
77ea1c6f | 26 | // dc.SubtractPedestals(kTRUE); |
27 | // while ( dc.NextDigit() ) { | |
28 | // Int_t module = dc.GetModule(); | |
29 | // Int_t column = dc.GetColumn(); | |
30 | // Int_t row = dc.GetRow(); | |
31 | // Double_t amplitude = dc.GetEnergy(); | |
32 | // Double_t time = dc.GetTime(); | |
33 | // Bool_t IsLowGain = dc.IsLowGain(); | |
34 | // .......... | |
35 | // } | |
36 | // } | |
37 | ||
38 | // Author: Dmitri Peressounko | |
39 | ||
40 | // --- ROOT system --- | |
11f2ec15 | 41 | #include "TList.h" |
77ea1c6f | 42 | #include "TMath.h" |
43 | #include "TMinuit.h" | |
44 | ||
11f2ec15 | 45 | #include "TCanvas.h" |
46 | #include "TH1.h" | |
47 | #include "TH2.h" | |
48 | #include "TF1.h" | |
49 | #include "TROOT.h" | |
50 | ||
77ea1c6f | 51 | // --- AliRoot header files --- |
11f2ec15 | 52 | //#include "AliLog.h" |
77ea1c6f | 53 | #include "AliPHOSRawDecoderv1.h" |
54 | #include "AliPHOSPulseGenerator.h" | |
55 | ||
56 | ||
57 | ClassImp(AliPHOSRawDecoderv1) | |
58 | ||
59 | //----------------------------------------------------------------------------- | |
11f2ec15 | 60 | AliPHOSRawDecoderv1::AliPHOSRawDecoderv1():AliPHOSRawDecoder(), |
61 | fSampleParamsLow(0x0),fSampleParamsHigh(0x0),fToFit(0x0) | |
77ea1c6f | 62 | { |
63 | //Default constructor. | |
64 | } | |
65 | ||
66 | //----------------------------------------------------------------------------- | |
67 | AliPHOSRawDecoderv1::AliPHOSRawDecoderv1(AliRawReader* rawReader, AliAltroMapping **mapping): | |
11f2ec15 | 68 | AliPHOSRawDecoder(rawReader,mapping), |
69 | fSampleParamsLow(0x0),fSampleParamsHigh(0x0),fToFit(0x0) | |
77ea1c6f | 70 | { |
71 | //Construct a decoder object. | |
72 | //Is is user responsibility to provide next raw event | |
73 | //using AliRawReader::NextEvent(). | |
74 | ||
75 | if(!gMinuit) | |
76 | gMinuit = new TMinuit(100); | |
70d93620 | 77 | fSampleParamsHigh =new TArrayD(7) ; |
78 | fSampleParamsHigh->AddAt(2.174,0) ; | |
79 | fSampleParamsHigh->AddAt(0.106,1) ; | |
80 | fSampleParamsHigh->AddAt(0.173,2) ; | |
81 | fSampleParamsHigh->AddAt(0.06106,3) ; | |
82 | //last two parameters are pedestal and overflow | |
83 | fSampleParamsLow=new TArrayD(7) ; | |
84 | fSampleParamsLow->AddAt(2.456,0) ; | |
85 | fSampleParamsLow->AddAt(0.137,1) ; | |
86 | fSampleParamsLow->AddAt(2.276,2) ; | |
87 | fSampleParamsLow->AddAt(0.08246,3) ; | |
11f2ec15 | 88 | fToFit = new TList() ; |
77ea1c6f | 89 | } |
90 | ||
91 | //----------------------------------------------------------------------------- | |
92 | AliPHOSRawDecoderv1::~AliPHOSRawDecoderv1() | |
93 | { | |
94 | //Destructor. | |
11f2ec15 | 95 | if(fSampleParamsLow){ |
96 | delete fSampleParamsLow ; | |
97 | fSampleParamsLow=0 ; | |
98 | } | |
99 | if(fSampleParamsHigh){ | |
100 | delete fSampleParamsHigh ; | |
101 | fSampleParamsHigh=0; | |
102 | } | |
103 | if(fToFit){ | |
104 | delete fToFit ; | |
105 | fToFit=0 ; | |
106 | } | |
77ea1c6f | 107 | } |
108 | ||
109 | //----------------------------------------------------------------------------- | |
110 | AliPHOSRawDecoderv1::AliPHOSRawDecoderv1(const AliPHOSRawDecoderv1 &phosDecoder ): | |
11f2ec15 | 111 | AliPHOSRawDecoder(phosDecoder), |
112 | fSampleParamsLow(0x0),fSampleParamsHigh(0x0),fToFit(0x0) | |
77ea1c6f | 113 | { |
114 | //Copy constructor. | |
11f2ec15 | 115 | fToFit = new TList() ; |
116 | fSampleParamsLow =new TArrayD(*(phosDecoder.fSampleParamsLow)) ; | |
117 | fSampleParamsHigh=new TArrayD(*(phosDecoder.fSampleParamsHigh)) ; | |
77ea1c6f | 118 | } |
119 | ||
120 | //----------------------------------------------------------------------------- | |
11f2ec15 | 121 | AliPHOSRawDecoderv1& AliPHOSRawDecoderv1::operator = (const AliPHOSRawDecoderv1 &phosDecoder) |
77ea1c6f | 122 | { |
123 | //Assignment operator. | |
124 | ||
11f2ec15 | 125 | // if(this != &phosDecoder) { |
77ea1c6f | 126 | // } |
11f2ec15 | 127 | fToFit = new TList() ; |
128 | if(fSampleParamsLow){ | |
129 | fSampleParamsLow = phosDecoder.fSampleParamsLow ; | |
130 | fSampleParamsHigh= phosDecoder.fSampleParamsHigh ; | |
131 | } | |
132 | else{ | |
133 | fSampleParamsLow =new TArrayD(*(phosDecoder.fSampleParamsLow)) ; | |
134 | fSampleParamsHigh=new TArrayD(*(phosDecoder.fSampleParamsHigh)) ; | |
135 | } | |
77ea1c6f | 136 | return *this; |
137 | } | |
138 | ||
139 | //----------------------------------------------------------------------------- | |
140 | Bool_t AliPHOSRawDecoderv1::NextDigit() | |
141 | { | |
142 | //Extract an energy deposited in the crystal, | |
143 | //crystal' position (module,column,row), | |
144 | //time and gain (high or low). | |
145 | //First collects sample, then evaluates it and if it has | |
146 | //reasonable shape, fits it with Gamma2 function and extracts | |
147 | //energy and time. | |
11f2ec15 | 148 | |
70d93620 | 149 | //Debug===================== |
39569d36 | 150 | // TCanvas * c = 0; //(TCanvas*)gROOT->FindObjectAny("CSample") ; |
70d93620 | 151 | // if(!c) |
152 | // c = new TCanvas("CSample","CSample") ; | |
153 | // | |
39569d36 | 154 | // TH1D * h = 0 ; //(TH1D*)gROOT->FindObjectAny("hSample") ; |
70d93620 | 155 | // if(!h) |
156 | // h=new TH1D("hSample","",200,0.,200.) ; | |
157 | // | |
39569d36 | 158 | // TF1 * fff = 0 ; //(TF1*)gROOT->FindObjectAny("fff") ; |
70d93620 | 159 | // if(!fff) |
160 | // fff = new TF1("fff","[0]+[1]*((abs(x-[2]))^[3]*exp(-(x-[2])*[4])+[5]*(x-[2])*(x-[2])*exp(-(x-[2])*[6]))",0.,1000.) ; | |
161 | //End debug=========== | |
77ea1c6f | 162 | |
163 | AliCaloRawStream* in = fCaloStream; | |
164 | ||
70d93620 | 165 | Int_t iBin = fSamples->GetSize() ; |
77ea1c6f | 166 | Int_t tLength = 0; |
167 | fEnergy = -111; | |
168 | Float_t pedMean = 0; | |
169 | Int_t nPed = 0; | |
170 | Float_t baseLine = 1.0; | |
171 | const Float_t nPreSamples = 10; | |
70d93620 | 172 | fQuality= 999. ; |
173 | const Float_t sampleMaxHG=102.332 ; //maximal height of HG sample with given parameterization | |
174 | const Float_t sampleMaxLG=277.196 ; //maximal height of HG sample with given parameterization | |
39569d36 | 175 | const Float_t maxEtoFit=5 ; //fit only samples above this energy, accept all samples (with good aRMS) below it |
77ea1c6f | 176 | |
177 | while ( in->Next() ) { | |
178 | ||
179 | if(!tLength) { | |
180 | tLength = in->GetTimeLength(); | |
181 | if(tLength!=fSamples->GetSize()) { | |
182 | delete fSamples ; | |
70d93620 | 183 | delete fTimes ; |
77ea1c6f | 184 | fSamples = new TArrayI(tLength); |
70d93620 | 185 | fTimes = new TArrayI(tLength); |
186 | iBin= fSamples->GetSize() ; | |
77ea1c6f | 187 | } |
188 | else{ | |
70d93620 | 189 | fSamples->Reset() ; |
77ea1c6f | 190 | } |
191 | } | |
192 | ||
193 | // Fit the full sample | |
70d93620 | 194 | if(in->IsNewHWAddress() && iBin != fSamples->GetSize()) { |
39569d36 | 195 | |
196 | //First remember new sample | |
197 | fNewLowGainFlag = in->IsLowGain(); | |
198 | fNewModule = in->GetModule()+1; | |
199 | fNewRow = in->GetRow() +1; | |
200 | fNewColumn = in->GetColumn()+1; | |
201 | fNewAmp = in->GetSignal() ; | |
202 | fNewTime=in->GetTime() ; | |
203 | //new handle already collected | |
77ea1c6f | 204 | Double_t pedestal =0. ; |
205 | if(fPedSubtract){ | |
206 | if (nPed > 0) | |
207 | pedestal = (Double_t)(pedMean/nPed); | |
208 | else | |
209 | return kFALSE; | |
210 | } | |
70d93620 | 211 | |
212 | //calculate time and energy | |
213 | Int_t maxBin=0 ; | |
214 | Int_t maxAmp=0 ; | |
215 | Double_t aMean=0. ; | |
216 | Double_t aRMS=0. ; | |
39569d36 | 217 | Double_t wts=0 ; |
70d93620 | 218 | Int_t tStart = 0 ; |
70d93620 | 219 | for(Int_t i=iBin; i<fSamples->GetSize(); i++){ |
220 | if(fSamples->At(i)>0){ | |
221 | Double_t de=fSamples->At(i)-pedestal ; | |
39569d36 | 222 | if(de>1.){ |
223 | aMean+=de*i ; | |
224 | aRMS+=de*i*i ; | |
225 | wts+=de; | |
226 | } | |
70d93620 | 227 | if(de>2 && tStart==0) |
228 | tStart=i ; | |
229 | if(maxAmp<fSamples->At(i)){ | |
230 | maxBin=i ; | |
231 | maxAmp=fSamples->At(i) ; | |
232 | } | |
233 | } | |
234 | } | |
39569d36 | 235 | if(maxBin==fSamples->GetSize()-1){//bad "rising" sample |
70d93620 | 236 | fEnergy=0. ; |
237 | fTime=-999.; | |
238 | fQuality= 999. ; | |
239 | return kTRUE ; | |
240 | } | |
241 | fEnergy=Double_t(maxAmp)-pedestal ; | |
242 | fOverflow =0 ; //look for plato on the top of sample | |
243 | if(fEnergy>500 && //this is not fluctuation of soft sample | |
244 | maxBin<fSamples->GetSize()-1 && fSamples->At(maxBin+1)==maxAmp){ //and there is a plato | |
245 | fOverflow = kTRUE ; | |
77ea1c6f | 246 | } |
70d93620 | 247 | |
39569d36 | 248 | if(wts>0){ |
249 | aMean/=wts; | |
250 | aRMS=aRMS/wts-aMean*aMean; | |
77ea1c6f | 251 | } |
39569d36 | 252 | |
253 | //do not take too small energies | |
254 | if(fEnergy < baseLine) | |
255 | fEnergy = 0; | |
256 | ||
257 | //do not test quality of too soft samples | |
258 | if(fEnergy<maxEtoFit){ | |
259 | fTime=fTimes->At(tStart); | |
260 | if(aRMS<2.) //sigle peak | |
261 | fQuality=999. ; | |
262 | else | |
263 | fQuality= 0. ; | |
264 | return kTRUE ; | |
265 | } | |
266 | ||
77ea1c6f | 267 | |
70d93620 | 268 | //Debug:=====Draw sample |
269 | //if(fEnergy>pedestal+10.){ | |
39569d36 | 270 | //if(fLowGainFlag && fEnergy>2){ |
271 | // if(!c) | |
113139da | 272 | // if(!fLowGainFlag && fRow==32 && fColumn==18){ |
273 | // TCanvas *c = new TCanvas("CSample","CSample") ; | |
70d93620 | 274 | // c->cd() ; |
275 | // h->Draw() ; | |
276 | // c->Update() ; | |
39569d36 | 277 | // printf("fEnergy=%f, aRMS=%f \n",fEnergy,aRMS) ; |
278 | //getchar() ; | |
70d93620 | 279 | //} |
280 | //====================== | |
281 | ||
77ea1c6f | 282 | //IF sample has reasonable mean and RMS, try to fit it with gamma2 |
77ea1c6f | 283 | |
284 | gMinuit->mncler(); // Reset Minuit's list of paramters | |
285 | gMinuit->SetPrintLevel(-1) ; // No Printout | |
286 | gMinuit->SetFCN(AliPHOSRawDecoderv1::UnfoldingChiSquare) ; | |
287 | // To set the address of the minimization function | |
11f2ec15 | 288 | |
289 | fToFit->Clear() ; | |
113139da | 290 | Double_t b,bmin,bmax ; |
11f2ec15 | 291 | if(fLowGainFlag){ |
292 | fSampleParamsLow->AddAt(pedestal,4) ; | |
70d93620 | 293 | if(fOverflow) |
294 | fSampleParamsLow->AddAt(double(maxAmp),5) ; | |
295 | else | |
296 | fSampleParamsLow->AddAt(double(1023),5) ; | |
297 | fSampleParamsLow->AddAt(double(iBin),6) ; | |
11f2ec15 | 298 | fToFit->AddFirst((TObject*)fSampleParamsLow) ; |
113139da | 299 | b=fSampleParamsLow->At(2) ; |
300 | bmin=0.5 ; | |
301 | bmax=10. ; | |
302 | } | |
303 | else{ | |
11f2ec15 | 304 | fSampleParamsHigh->AddAt(pedestal,4) ; |
70d93620 | 305 | if(fOverflow) |
306 | fSampleParamsHigh->AddAt(double(maxAmp),5) ; | |
307 | else | |
308 | fSampleParamsHigh->AddAt(double(1023),5); | |
309 | fSampleParamsHigh->AddAt(double(iBin),6); | |
11f2ec15 | 310 | fToFit->AddFirst((TObject*)fSampleParamsHigh) ; |
113139da | 311 | b=fSampleParamsHigh->At(2) ; |
312 | bmin=0.05 ; | |
313 | bmax=0.4 ; | |
11f2ec15 | 314 | } |
315 | fToFit->AddLast((TObject*)fSamples) ; | |
70d93620 | 316 | fToFit->AddLast((TObject*)fTimes) ; |
11f2ec15 | 317 | |
318 | gMinuit->SetObjectFit((TObject*)fToFit) ; // To tranfer pointer to UnfoldingChiSquare | |
77ea1c6f | 319 | Int_t ierflg ; |
113139da | 320 | gMinuit->mnparm(0, "t0", 1.*tStart, 0.01, 0, 0, ierflg) ; |
77ea1c6f | 321 | if(ierflg != 0){ |
11f2ec15 | 322 | // AliWarning(Form("Unable to set initial value for fit procedure : t0=%e\n",1.*tStart) ) ; |
77ea1c6f | 323 | fEnergy=0. ; |
324 | fTime=-999. ; | |
70d93620 | 325 | fQuality=999 ; |
77ea1c6f | 326 | return kTRUE ; //will scan further |
327 | } | |
70d93620 | 328 | Double_t amp0; |
329 | if(fLowGainFlag) | |
330 | amp0=fEnergy/sampleMaxLG; | |
331 | else | |
332 | amp0=fEnergy/sampleMaxHG; | |
11f2ec15 | 333 | |
113139da | 334 | gMinuit->mnparm(1, "Energy", amp0 , 0.01*amp0, 0, 0, ierflg) ; |
77ea1c6f | 335 | if(ierflg != 0){ |
11f2ec15 | 336 | // AliWarning(Form("Unable to set initial value for fit procedure : E=%e\n", amp0)) ; |
77ea1c6f | 337 | fEnergy=0. ; |
338 | fTime=-999. ; | |
70d93620 | 339 | fQuality=999 ; |
77ea1c6f | 340 | return kTRUE ; //will scan further |
341 | } | |
113139da | 342 | |
343 | gMinuit->mnparm(2, "p2", b, 0.01*b, bmin, bmax, ierflg) ; | |
344 | if(ierflg != 0){ | |
345 | // AliWarning(Form("Unable to set initial value for fit procedure : E=%e\n", amp0)) ; | |
346 | fEnergy=0. ; | |
347 | fTime=-999. ; | |
348 | fQuality=999 ; | |
349 | return kTRUE ; //will scan further | |
350 | } | |
351 | ||
77ea1c6f | 352 | |
11f2ec15 | 353 | Double_t p0 = 0.0001 ; // "Tolerance" Evaluation stops when EDM = 0.0001*p0 ; The number of function call slightly |
77ea1c6f | 354 | // depends on it. |
355 | Double_t p1 = 1.0 ; | |
356 | Double_t p2 = 0.0 ; | |
357 | gMinuit->mnexcm("SET STR", &p2, 0, ierflg) ; // force TMinuit to reduce function calls | |
358 | gMinuit->mnexcm("SET GRA", &p1, 1, ierflg) ; // force TMinuit to use my gradient | |
359 | // gMinuit->SetMaxIterations(100); | |
360 | gMinuit->mnexcm("SET NOW", &p2 , 0, ierflg) ; // No Warnings | |
361 | ||
362 | gMinuit->mnexcm("MIGRAD", &p0, 0, ierflg) ; // minimize | |
70d93620 | 363 | |
77ea1c6f | 364 | |
11f2ec15 | 365 | Double_t err,t0err ; |
366 | Double_t t0,efit ; | |
367 | gMinuit->GetParameter(0,t0, t0err) ; | |
368 | gMinuit->GetParameter(1,efit, err) ; | |
11f2ec15 | 369 | |
113139da | 370 | Double_t bfit, berr ; |
371 | gMinuit->GetParameter(2,bfit,berr) ; | |
372 | ||
70d93620 | 373 | //Calculate total energy |
113139da | 374 | //this isparameterization of depetendence of pulse height on parameter b |
70d93620 | 375 | if(fLowGainFlag) |
113139da | 376 | efit*=99.54910 + 78.65038*bfit ; |
70d93620 | 377 | else |
113139da | 378 | efit*=80.33109+128.6433*bfit ; |
70d93620 | 379 | |
380 | if(efit<0. || efit > 10000.){ | |
b20d9db0 | 381 | //leave energy as previously found max |
382 | // fEnergy=0 ; //bad sample | |
70d93620 | 383 | fTime=-999.; |
384 | fQuality=999 ; | |
385 | return kTRUE; | |
386 | } | |
387 | ||
388 | //evaluate fit quality | |
389 | Double_t fmin,fedm,errdef ; | |
390 | Int_t npari,nparx,istat; | |
391 | gMinuit->mnstat(fmin,fedm,errdef,npari,nparx,istat) ; | |
392 | fQuality=fmin/(fSamples->GetSize()-iBin) ; | |
393 | //compare quality with some parameterization | |
113139da | 394 | if(fLowGainFlag){ |
395 | fQuality/=2.+0.002*fEnergy ; | |
396 | } | |
397 | else{ | |
398 | fQuality/=0.75+0.0025*fEnergy ; | |
399 | } | |
70d93620 | 400 | |
401 | //Debug================ | |
113139da | 402 | // Double_t n,alpha,beta ; |
70d93620 | 403 | // if(fLowGainFlag){ |
404 | // n=fSampleParamsLow->At(0) ; | |
405 | // alpha=fSampleParamsLow->At(1) ; | |
70d93620 | 406 | // beta=fSampleParamsLow->At(3) ; |
407 | // } | |
408 | // else{ | |
409 | // n=fSampleParamsHigh->At(0) ; | |
410 | // alpha=fSampleParamsHigh->At(1) ; | |
70d93620 | 411 | // beta=fSampleParamsHigh->At(3) ; |
412 | // } | |
413 | // | |
113139da | 414 | // if( fQuality > 1 && fEnergy > 20. && !fOverflow){ |
415 | // if(!fLowGainFlag && fRow==32 && fColumn==18){ | |
416 | // printf("Col=%d, row=%d, qual=%f, E=%f, t0=%f, b=%f\n",fColumn,fRow,fQuality,efit,t0,bfit) ; | |
417 | // TCanvas * c = new TCanvas("samp") ; | |
11f2ec15 | 418 | // c->cd() ; |
419 | // h->Draw() ; | |
420 | // if(fLowGainFlag){ | |
113139da | 421 | // fff->SetParameters(pedestal,efit/sampleMaxLG,t0,n,alpha,bfit,beta) ; |
11f2ec15 | 422 | // } |
423 | // else{ | |
113139da | 424 | // fff->SetParameters(pedestal,efit/sampleMaxHG,t0,n,alpha,bfit,beta) ; |
11f2ec15 | 425 | // } |
113139da | 426 | //// for(Int_t i=1;i<=h->GetNbinsX(); i++){ |
427 | // Double_t x=h->GetBinCenter(i) ; | |
428 | // h->SetBinContent(i,h->GetBinContent(i)-fff->Eval(x)) ; | |
429 | // } | |
430 | // h->SetMinimum(-15.) ; | |
431 | // h->SetMaximum(15.) ; | |
432 | // h->Draw() ; | |
11f2ec15 | 433 | // fff->Draw("same") ; |
434 | // c->Update(); | |
70d93620 | 435 | // getchar() ; |
436 | // } | |
437 | //==================== | |
11f2ec15 | 438 | |
39569d36 | 439 | fEnergy=efit ; |
440 | fTime=t0 ; | |
11f2ec15 | 441 | |
77ea1c6f | 442 | |
443 | return kTRUE; | |
444 | } | |
445 | ||
446 | fLowGainFlag = in->IsLowGain(); | |
77ea1c6f | 447 | fModule = in->GetModule()+1; |
448 | fRow = in->GetRow() +1; | |
449 | fColumn = in->GetColumn()+1; | |
39569d36 | 450 | |
451 | //add previouly taken if coincides | |
452 | if(fLowGainFlag==fNewLowGainFlag && fModule==fNewModule && | |
453 | fRow==fNewRow && fColumn==fNewColumn){ | |
454 | iBin--; | |
455 | if(fPedSubtract && fNewTime < nPreSamples) { | |
456 | pedMean += in->GetSignal(); | |
457 | nPed++; | |
458 | } | |
459 | fSamples->AddAt(fNewAmp,iBin); | |
460 | fTimes->AddAt(fNewTime,iBin); | |
461 | ||
462 | //Mark that we already take it | |
463 | fNewModule=-1 ; | |
464 | } | |
77ea1c6f | 465 | |
77ea1c6f | 466 | // Fill array with samples |
70d93620 | 467 | iBin--; |
468 | if(fPedSubtract && (in->GetTime() < nPreSamples)) { | |
77ea1c6f | 469 | pedMean += in->GetSignal(); |
470 | nPed++; | |
471 | } | |
70d93620 | 472 | fSamples->AddAt(in->GetSignal(),iBin); |
473 | fTimes->AddAt(in->GetTime(),iBin); | |
474 | ||
475 | //Debug============== | |
476 | // h->SetBinContent(iBin,in->GetSignal()) ; | |
77ea1c6f | 477 | |
478 | } // in.Next() | |
479 | ||
480 | return kFALSE; | |
481 | } | |
482 | //_____________________________________________________________________________ | |
483 | void AliPHOSRawDecoderv1::UnfoldingChiSquare(Int_t & /*nPar*/, Double_t * Grad, Double_t & fret, Double_t * x, Int_t iflag) | |
484 | { | |
77ea1c6f | 485 | // Number of parameters, Gradient, Chi squared, parameters, what to do |
486 | ||
11f2ec15 | 487 | TList * toFit= (TList*)gMinuit->GetObjectFit() ; |
488 | TArrayD * params=(TArrayD*)toFit->At(0) ; | |
489 | TArrayI * samples = (TArrayI*)toFit->At(1) ; | |
70d93620 | 490 | TArrayI * times = (TArrayI*)toFit->At(2) ; |
77ea1c6f | 491 | |
492 | fret = 0. ; | |
493 | if(iflag == 2) | |
113139da | 494 | for(Int_t iparam = 0 ; iparam < 3 ; iparam++) |
77ea1c6f | 495 | Grad[iparam] = 0 ; // Will evaluate gradient |
496 | ||
11f2ec15 | 497 | Double_t t0=x[0] ; |
498 | Double_t en=x[1] ; | |
113139da | 499 | Double_t b=x[2] ; |
70d93620 | 500 | Double_t n=params->At(0) ; |
11f2ec15 | 501 | Double_t alpha=params->At(1) ; |
11f2ec15 | 502 | Double_t beta=params->At(3) ; |
113139da | 503 | Double_t ped=params->At(4) ; |
504 | ||
505 | Double_t overflow=params->At(5) ; | |
70d93620 | 506 | Int_t iBin = (Int_t) params->At(6) ; |
507 | Int_t nSamples=TMath::Min(iBin+70,samples->GetSize()) ; //Here we set number of points to fit (70) | |
77ea1c6f | 508 | |
113139da | 509 | Int_t tStep=times->At(iBin+1)-times->At(iBin) ; |
510 | Double_t ddt=TMath::Ceil(t0)-t0-tStep ; | |
511 | Double_t exp1=TMath::Exp(-alpha*ddt) ; | |
512 | Double_t exp2=TMath::Exp(-beta*ddt) ; | |
513 | Double_t dexp1=TMath::Exp(-alpha*tStep) ; | |
514 | Double_t dexp2=TMath::Exp(-beta*tStep) ; | |
515 | for(Int_t i = iBin; i<nSamples ; i++) { | |
516 | Double_t fsample = double(samples->At(i)) ; | |
517 | // if(fsample>=overflow) | |
518 | // continue ; | |
519 | Double_t dt=double(times->At(i))-t0 ; | |
520 | Double_t diff ; | |
521 | if(dt<=0.){ | |
522 | diff=fsample - ped ; | |
523 | fret += diff*diff ; | |
77ea1c6f | 524 | continue ; |
113139da | 525 | } |
526 | exp1*=dexp1 ; | |
527 | exp2*=dexp2 ; | |
528 | Double_t dtn=TMath::Power(dt,n) ; | |
529 | Double_t dtnE=dtn*exp1 ; | |
530 | Double_t dt2E=dt*dt*exp2 ; | |
531 | Double_t fit=ped+en*(dtnE + b*dt2E) ; | |
532 | if(fit>=overflow){ | |
533 | diff=fsample-overflow ; | |
534 | fret += diff*diff ; | |
535 | //zero gradient here | |
536 | } | |
537 | else{ | |
538 | diff = fsample - fit ; | |
539 | fret += diff*diff ; | |
540 | if(iflag == 2){ // calculate gradient | |
541 | Grad[0] += en*diff*(dtnE*(n/dt-alpha)+b*dt2E*(2./dt-beta)) ; //derivative over t0 | |
542 | Grad[1] -= diff*(dtnE+b*dt2E) ; | |
543 | Grad[2] -= en*diff*dt2E ; | |
77ea1c6f | 544 | } |
545 | } | |
77ea1c6f | 546 | } |
113139da | 547 | if(iflag == 2) |
548 | for(Int_t iparam = 0 ; iparam < 3 ; iparam++) | |
549 | Grad[iparam] *= 2. ; | |
77ea1c6f | 550 | } |
551 | //----------------------------------------------------------------------------- | |
113139da | 552 | Double_t AliPHOSRawDecoderv1::Gamma2(Double_t dt,Double_t en,Double_t b,TArrayD * params){ //Function for fitting samples |
77ea1c6f | 553 | //parameters: |
11f2ec15 | 554 | //dt-time after start |
77ea1c6f | 555 | //en-amplutude |
11f2ec15 | 556 | //function parameters |
557 | ||
558 | Double_t ped=params->At(4) ; | |
77ea1c6f | 559 | if(dt<0.) |
11f2ec15 | 560 | return ped ; //pedestal |
77ea1c6f | 561 | else |
113139da | 562 | return ped+en*(TMath::Power(dt,params->At(0))*TMath::Exp(-dt*params->At(1))+b*dt*dt*TMath::Exp(-dt*params->At(3))) ; |
77ea1c6f | 563 | } |
564 |