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ee299369 | 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 | /* $Id$ */ | |
ee299369 | 17 | |
e5bbbc4e | 18 | //_________________________________________________________________________ |
19 | // Utility Class for handling Raw data | |
20 | // Does all transitions from Digits to Raw and vice versa, | |
21 | // for simu and reconstruction | |
22 | // | |
23 | // Note: the current version is still simplified. Only | |
24 | // one raw signal per digit is generated; either high-gain or low-gain | |
25 | // Need to add concurrent high and low-gain info in the future | |
26 | // No pedestal is added to the raw signal. | |
ee299369 | 27 | //*-- Author: Marco van Leeuwen (LBL) |
e5bbbc4e | 28 | |
ee299369 | 29 | #include "AliEMCALRawUtils.h" |
21cad85c | 30 | |
ee299369 | 31 | #include "TF1.h" |
32 | #include "TGraph.h" | |
e5bbbc4e | 33 | class TSystem; |
21cad85c | 34 | |
e5bbbc4e | 35 | class AliLog; |
72c58de0 | 36 | #include "AliRun.h" |
ee299369 | 37 | #include "AliRunLoader.h" |
e5bbbc4e | 38 | class AliCaloAltroMapping; |
ee299369 | 39 | #include "AliAltroBuffer.h" |
40 | #include "AliRawReader.h" | |
32cd4c24 | 41 | #include "AliCaloRawStreamV3.h" |
ee299369 | 42 | #include "AliDAQ.h" |
21cad85c | 43 | |
feedcab9 | 44 | #include "AliEMCALRecParam.h" |
ee299369 | 45 | #include "AliEMCALLoader.h" |
46 | #include "AliEMCALGeometry.h" | |
e5bbbc4e | 47 | class AliEMCALDigitizer; |
ee299369 | 48 | #include "AliEMCALDigit.h" |
20b636fc | 49 | #include "AliEMCAL.h" |
21cad85c | 50 | |
ee299369 | 51 | ClassImp(AliEMCALRawUtils) |
21cad85c | 52 | |
ee299369 | 53 | // Signal shape parameters |
e5bbbc4e | 54 | Double_t AliEMCALRawUtils::fgTimeBinWidth = 100E-9 ; // each sample is 100 ns |
ee299369 | 55 | Double_t AliEMCALRawUtils::fgTimeTrigger = 1.5E-6 ; // 15 time bins ~ 1.5 musec |
56 | ||
57 | // some digitization constants | |
58 | Int_t AliEMCALRawUtils::fgThreshold = 1; | |
59 | Int_t AliEMCALRawUtils::fgDDLPerSuperModule = 2; // 2 ddls per SuperModule | |
e5bbbc4e | 60 | Int_t AliEMCALRawUtils::fgPedestalValue = 32; // pedestal value for digits2raw |
61 | Double_t AliEMCALRawUtils::fgFEENoise = 3.; // 3 ADC channels of noise (sampled) | |
ee299369 | 62 | |
8cb998bd | 63 | AliEMCALRawUtils::AliEMCALRawUtils() |
b4133f05 | 64 | : fHighLowGainFactor(0.), fOrder(0), fTau(0.), fNoiseThreshold(0), |
65 | fNPedSamples(0), fGeom(0), fOption("") | |
8cb998bd | 66 | { |
b4133f05 | 67 | |
68 | //These are default parameters. | |
69 | //Can be re-set from without with setter functions | |
ee299369 | 70 | fHighLowGainFactor = 16. ; // adjusted for a low gain range of 82 GeV (10 bits) |
b4133f05 | 71 | fOrder = 2; // order of gamma fn |
72 | fTau = 2.35; // in units of timebin, from CERN 2007 testbeam | |
73 | fNoiseThreshold = 3; | |
74 | fNPedSamples = 5; | |
65bdc82f | 75 | |
76 | //Get Mapping RCU files from the AliEMCALRecParam | |
77 | const TObjArray* maps = AliEMCALRecParam::GetMappings(); | |
78 | if(!maps) AliFatal("Cannot retrieve ALTRO mappings!!"); | |
79 | ||
21cad85c | 80 | for(Int_t i = 0; i < 4; i++) { |
65bdc82f | 81 | fMapping[i] = (AliAltroMapping*)maps->At(i); |
82 | } | |
83 | ||
72c58de0 | 84 | //To make sure we match with the geometry in a simulation file, |
85 | //let's try to get it first. If not, take the default geometry | |
33c3c91a | 86 | AliRunLoader *rl = AliRunLoader::Instance(); |
c61fe3b4 | 87 | if(!rl) AliError("Cannot find RunLoader!"); |
72c58de0 | 88 | if (rl->GetAliRun() && rl->GetAliRun()->GetDetector("EMCAL")) { |
89 | fGeom = dynamic_cast<AliEMCAL*>(rl->GetAliRun()->GetDetector("EMCAL"))->GetGeometry(); | |
90 | } else { | |
91 | AliInfo(Form("Using default geometry in raw reco")); | |
937d0661 | 92 | fGeom = AliEMCALGeometry::GetInstance(AliEMCALGeometry::GetDefaultGeometryName()); |
65bdc82f | 93 | } |
94 | ||
72c58de0 | 95 | if(!fGeom) AliFatal(Form("Could not get geometry!")); |
96 | ||
65bdc82f | 97 | } |
98 | ||
99 | //____________________________________________________________________________ | |
5544799a | 100 | AliEMCALRawUtils::AliEMCALRawUtils(AliEMCALGeometry *pGeometry) |
101 | : fHighLowGainFactor(0.), fOrder(0), fTau(0.), fNoiseThreshold(0), | |
102 | fNPedSamples(0), fGeom(pGeometry), fOption("") | |
103 | { | |
104 | // | |
105 | // Initialize with the given geometry - constructor required by HLT | |
106 | // HLT does not use/support AliRunLoader(s) instances | |
107 | // This is a minimum intervention solution | |
108 | // Comment by MPloskon@lbl.gov | |
109 | // | |
110 | ||
111 | //These are default parameters. | |
112 | //Can be re-set from without with setter functions | |
113 | fHighLowGainFactor = 16. ; // adjusted for a low gain range of 82 GeV (10 bits) | |
114 | fOrder = 2; // order of gamma fn | |
115 | fTau = 2.35; // in units of timebin, from CERN 2007 testbeam | |
116 | fNoiseThreshold = 3; | |
117 | fNPedSamples = 5; | |
118 | ||
119 | //Get Mapping RCU files from the AliEMCALRecParam | |
120 | const TObjArray* maps = AliEMCALRecParam::GetMappings(); | |
121 | if(!maps) AliFatal("Cannot retrieve ALTRO mappings!!"); | |
122 | ||
21cad85c | 123 | for(Int_t i = 0; i < 4; i++) { |
5544799a | 124 | fMapping[i] = (AliAltroMapping*)maps->At(i); |
125 | } | |
126 | ||
127 | if(!fGeom) AliFatal(Form("Could not get geometry!")); | |
128 | ||
129 | } | |
130 | ||
131 | //____________________________________________________________________________ | |
65bdc82f | 132 | AliEMCALRawUtils::AliEMCALRawUtils(const AliEMCALRawUtils& rawU) |
133 | : TObject(), | |
134 | fHighLowGainFactor(rawU.fHighLowGainFactor), | |
b4133f05 | 135 | fOrder(rawU.fOrder), |
136 | fTau(rawU.fTau), | |
137 | fNoiseThreshold(rawU.fNoiseThreshold), | |
138 | fNPedSamples(rawU.fNPedSamples), | |
65bdc82f | 139 | fGeom(rawU.fGeom), |
140 | fOption(rawU.fOption) | |
141 | { | |
142 | //copy ctor | |
143 | fMapping[0] = rawU.fMapping[0]; | |
144 | fMapping[1] = rawU.fMapping[1]; | |
21cad85c | 145 | fMapping[2] = rawU.fMapping[2]; |
146 | fMapping[3] = rawU.fMapping[3]; | |
65bdc82f | 147 | } |
148 | ||
149 | //____________________________________________________________________________ | |
150 | AliEMCALRawUtils& AliEMCALRawUtils::operator =(const AliEMCALRawUtils &rawU) | |
151 | { | |
152 | //assignment operator | |
153 | ||
154 | if(this != &rawU) { | |
155 | fHighLowGainFactor = rawU.fHighLowGainFactor; | |
b4133f05 | 156 | fOrder = rawU.fOrder; |
157 | fTau = rawU.fTau; | |
158 | fNoiseThreshold = rawU.fNoiseThreshold; | |
159 | fNPedSamples = rawU.fNPedSamples; | |
65bdc82f | 160 | fGeom = rawU.fGeom; |
161 | fOption = rawU.fOption; | |
162 | fMapping[0] = rawU.fMapping[0]; | |
163 | fMapping[1] = rawU.fMapping[1]; | |
21cad85c | 164 | fMapping[2] = rawU.fMapping[2]; |
165 | fMapping[3] = rawU.fMapping[3]; | |
65bdc82f | 166 | } |
167 | ||
168 | return *this; | |
169 | ||
ee299369 | 170 | } |
65bdc82f | 171 | |
ee299369 | 172 | //____________________________________________________________________________ |
173 | AliEMCALRawUtils::~AliEMCALRawUtils() { | |
e5bbbc4e | 174 | //dtor |
65bdc82f | 175 | |
ee299369 | 176 | } |
65bdc82f | 177 | |
ee299369 | 178 | //____________________________________________________________________________ |
65bdc82f | 179 | void AliEMCALRawUtils::Digits2Raw() |
ee299369 | 180 | { |
181 | // convert digits of the current event to raw data | |
182 | ||
33c3c91a | 183 | AliRunLoader *rl = AliRunLoader::Instance(); |
ee299369 | 184 | AliEMCALLoader *loader = dynamic_cast<AliEMCALLoader*>(rl->GetDetectorLoader("EMCAL")); |
185 | ||
186 | // get the digits | |
187 | loader->LoadDigits("EMCAL"); | |
188 | loader->GetEvent(); | |
189 | TClonesArray* digits = loader->Digits() ; | |
190 | ||
191 | if (!digits) { | |
192 | Warning("Digits2Raw", "no digits found !"); | |
193 | return; | |
194 | } | |
65bdc82f | 195 | |
ee299369 | 196 | static const Int_t nDDL = 12*2; // 12 SM hardcoded for now. Buffers allocated dynamically, when needed, so just need an upper limit here |
197 | AliAltroBuffer* buffers[nDDL]; | |
198 | for (Int_t i=0; i < nDDL; i++) | |
199 | buffers[i] = 0; | |
200 | ||
201 | Int_t adcValuesLow[fgkTimeBins]; | |
202 | Int_t adcValuesHigh[fgkTimeBins]; | |
203 | ||
ee299369 | 204 | // loop over digits (assume ordered digits) |
205 | for (Int_t iDigit = 0; iDigit < digits->GetEntries(); iDigit++) { | |
206 | AliEMCALDigit* digit = dynamic_cast<AliEMCALDigit *>(digits->At(iDigit)) ; | |
207 | if (digit->GetAmp() < fgThreshold) | |
208 | continue; | |
209 | ||
210 | //get cell indices | |
211 | Int_t nSM = 0; | |
212 | Int_t nIphi = 0; | |
213 | Int_t nIeta = 0; | |
214 | Int_t iphi = 0; | |
215 | Int_t ieta = 0; | |
216 | Int_t nModule = 0; | |
65bdc82f | 217 | fGeom->GetCellIndex(digit->GetId(), nSM, nModule, nIphi, nIeta); |
218 | fGeom->GetCellPhiEtaIndexInSModule(nSM, nModule, nIphi, nIeta,iphi, ieta) ; | |
ee299369 | 219 | |
21cad85c | 220 | //Check which is the RCU, 0 or 1, of the cell. |
ee299369 | 221 | Int_t iRCU = -111; |
222 | //RCU0 | |
223 | if (0<=iphi&&iphi<8) iRCU=0; // first cable row | |
224 | else if (8<=iphi&&iphi<16 && 0<=ieta&&ieta<24) iRCU=0; // first half; | |
225 | //second cable row | |
226 | //RCU1 | |
227 | else if(8<=iphi&&iphi<16 && 24<=ieta&&ieta<48) iRCU=1; // second half; | |
228 | //second cable row | |
229 | else if(16<=iphi&&iphi<24) iRCU=1; // third cable row | |
21cad85c | 230 | |
231 | if (nSM%2==1) iRCU = 1 - iRCU; // swap for odd=C side, to allow us to cable both sides the same | |
232 | ||
e36e3bcf | 233 | if (iRCU<0) |
234 | Fatal("Digits2Raw()","Non-existent RCU number: %d", iRCU); | |
ee299369 | 235 | |
236 | //Which DDL? | |
237 | Int_t iDDL = fgDDLPerSuperModule* nSM + iRCU; | |
238 | if (iDDL >= nDDL) | |
239 | Fatal("Digits2Raw()","Non-existent DDL board number: %d", iDDL); | |
240 | ||
241 | if (buffers[iDDL] == 0) { | |
242 | // open new file and write dummy header | |
243 | TString fileName = AliDAQ::DdlFileName("EMCAL",iDDL); | |
21cad85c | 244 | //Select mapping file RCU0A, RCU0C, RCU1A, RCU1C |
245 | Int_t iRCUside=iRCU+(nSM%2)*2; | |
246 | //iRCU=0 and even (0) SM -> RCU0A.data 0 | |
247 | //iRCU=1 and even (0) SM -> RCU1A.data 1 | |
248 | //iRCU=0 and odd (1) SM -> RCU0C.data 2 | |
249 | //iRCU=1 and odd (1) SM -> RCU1C.data 3 | |
250 | //cout<<" nSM "<<nSM<<"; iRCU "<<iRCU<<"; iRCUside "<<iRCUside<<endl; | |
251 | buffers[iDDL] = new AliAltroBuffer(fileName.Data(),fMapping[iRCUside]); | |
ee299369 | 252 | buffers[iDDL]->WriteDataHeader(kTRUE, kFALSE); //Dummy; |
253 | } | |
254 | ||
255 | // out of time range signal (?) | |
256 | if (digit->GetTimeR() > GetRawFormatTimeMax() ) { | |
257 | AliInfo("Signal is out of time range.\n"); | |
258 | buffers[iDDL]->FillBuffer((Int_t)digit->GetAmp()); | |
259 | buffers[iDDL]->FillBuffer(GetRawFormatTimeBins() ); // time bin | |
260 | buffers[iDDL]->FillBuffer(3); // bunch length | |
261 | buffers[iDDL]->WriteTrailer(3, ieta, iphi, nSM); // trailer | |
262 | // calculate the time response function | |
263 | } else { | |
264 | Bool_t lowgain = RawSampledResponse(digit->GetTimeR(), digit->GetAmp(), adcValuesHigh, adcValuesLow) ; | |
265 | if (lowgain) | |
266 | buffers[iDDL]->WriteChannel(ieta, iphi, 0, GetRawFormatTimeBins(), adcValuesLow, fgThreshold); | |
267 | else | |
268 | buffers[iDDL]->WriteChannel(ieta,iphi, 1, GetRawFormatTimeBins(), adcValuesHigh, fgThreshold); | |
269 | } | |
270 | } | |
271 | ||
272 | // write headers and close files | |
273 | for (Int_t i=0; i < nDDL; i++) { | |
274 | if (buffers[i]) { | |
275 | buffers[i]->Flush(); | |
276 | buffers[i]->WriteDataHeader(kFALSE, kFALSE); | |
277 | delete buffers[i]; | |
278 | } | |
279 | } | |
65bdc82f | 280 | |
ee299369 | 281 | loader->UnloadDigits(); |
282 | } | |
283 | ||
284 | //____________________________________________________________________________ | |
65bdc82f | 285 | void AliEMCALRawUtils::Raw2Digits(AliRawReader* reader,TClonesArray *digitsArr) |
ee299369 | 286 | { |
65bdc82f | 287 | // convert raw data of the current event to digits |
ee299369 | 288 | |
c47157cd | 289 | digitsArr->Clear(); |
ee299369 | 290 | |
c47157cd | 291 | if (!digitsArr) { |
ee299369 | 292 | Error("Raw2Digits", "no digits found !"); |
293 | return; | |
294 | } | |
295 | if (!reader) { | |
296 | Error("Raw2Digits", "no raw reader found !"); | |
297 | return; | |
298 | } | |
299 | ||
32cd4c24 | 300 | AliCaloRawStreamV3 in(reader,"EMCAL",fMapping); |
ee299369 | 301 | // Select EMCAL DDL's; |
302 | reader->Select("EMCAL"); | |
feedcab9 | 303 | |
8cb998bd | 304 | //Updated fitting routine from 2007 beam test takes into account |
305 | //possibility of two peaks in data and selects first one for fitting | |
306 | //Also sets some of the starting parameters based on the shape of the | |
307 | //given raw signal being fit | |
308 | ||
309 | TF1 * signalF = new TF1("signal", RawResponseFunction, 0, GetRawFormatTimeBins(), 5); | |
b4133f05 | 310 | signalF->SetParameters(10.,0.,fTau,fOrder,5.); //set all defaults once, just to be safe |
8cb998bd | 311 | signalF->SetParNames("amp","t0","tau","N","ped"); |
b4133f05 | 312 | signalF->SetParameter(2,fTau); // tau in units of time bin |
8cb998bd | 313 | signalF->SetParLimits(2,2,-1); |
b4133f05 | 314 | signalF->SetParameter(3,fOrder); // order |
8cb998bd | 315 | signalF->SetParLimits(3,2,-1); |
48a56166 | 316 | |
ee299369 | 317 | Int_t id = -1; |
82cbdfca | 318 | Float_t time = 0. ; |
319 | Float_t amp = 0. ; | |
32cd4c24 | 320 | Int_t i = 0; |
321 | Int_t startBin = 0; | |
ee299369 | 322 | |
8cb998bd | 323 | //Graph to hold data we will fit (should be converted to an array |
324 | //later to speed up processing | |
325 | TGraph * gSig = new TGraph(GetRawFormatTimeBins()); | |
ee299369 | 326 | |
ee299369 | 327 | Int_t lowGain = 0; |
e5bbbc4e | 328 | Int_t caloFlag = 0; // low, high gain, or TRU, or LED ref. |
ee299369 | 329 | |
32cd4c24 | 330 | // start loop over input stream |
331 | while (in.NextDDL()) { | |
332 | while (in.NextChannel()) { | |
8cb998bd | 333 | |
32cd4c24 | 334 | id = fGeom->GetAbsCellIdFromCellIndexes(in.GetModule(), in.GetRow(), in.GetColumn()) ; |
335 | caloFlag = in.GetCaloFlag(); | |
336 | lowGain = in.IsLowGain(); | |
337 | ||
338 | // There can be zero-suppression in the raw data, | |
339 | // so set up the TGraph in advance | |
340 | for (i=0; i < GetRawFormatTimeBins(); i++) { | |
341 | gSig->SetPoint(i, i , 0); | |
342 | } | |
343 | Int_t maxTime = 0; | |
344 | ||
345 | while (in.NextBunch()) { | |
346 | const UShort_t *sig = in.GetSignals(); | |
347 | startBin = in.GetStartTimeBin(); | |
348 | ||
349 | if (maxTime < in.GetStartTimeBin()) { | |
350 | maxTime = in.GetStartTimeBin(); // timebins come in reverse order | |
351 | } | |
352 | ||
353 | if (maxTime < 0 || maxTime >= GetRawFormatTimeBins()) { | |
354 | AliWarning(Form("Invalid time bin %d",maxTime)); | |
355 | maxTime = GetRawFormatTimeBins(); | |
356 | } | |
357 | ||
358 | for (i = 0; i < in.GetBunchLength(); i++) { | |
359 | time = startBin--; | |
360 | gSig->SetPoint(time, time, sig[i]) ; | |
361 | } | |
362 | } // loop over bunches | |
363 | ||
364 | gSig->Set(maxTime+1); | |
365 | FitRaw(gSig, signalF, amp, time) ; | |
ee299369 | 366 | |
32cd4c24 | 367 | if (caloFlag == 0 || caloFlag == 1) { // low gain or high gain |
368 | if (amp > 0 && amp < 2000) { //check both high and low end of | |
e5bbbc4e | 369 | //result, 2000 is somewhat arbitrary - not nice with magic numbers in the code.. |
32cd4c24 | 370 | AliDebug(2,Form("id %d lowGain %d amp %g", id, lowGain, amp)); |
ee299369 | 371 | |
32cd4c24 | 372 | AddDigit(digitsArr, id, lowGain, (Int_t)amp, time); |
373 | } | |
e5bbbc4e | 374 | |
32cd4c24 | 375 | } |
e5bbbc4e | 376 | |
32cd4c24 | 377 | // Reset graph |
378 | for (Int_t index = 0; index < gSig->GetN(); index++) { | |
379 | gSig->SetPoint(index, index, 0) ; | |
380 | } | |
381 | // Reset starting parameters for fit function | |
382 | signalF->SetParameters(10.,0.,fTau,fOrder,5.); //reset all defaults just to be safe | |
48a56166 | 383 | |
32cd4c24 | 384 | } // end while over channel |
385 | } //end while over DDL's, of input stream | |
ee299369 | 386 | |
387 | delete signalF ; | |
388 | delete gSig; | |
389 | ||
390 | return ; | |
391 | } | |
392 | ||
393 | //____________________________________________________________________________ | |
82cbdfca | 394 | void AliEMCALRawUtils::AddDigit(TClonesArray *digitsArr, Int_t id, Int_t lowGain, Int_t amp, Float_t time) { |
395 | // | |
396 | // Add a new digit. | |
397 | // This routine checks whether a digit exists already for this tower | |
398 | // and then decides whether to use the high or low gain info | |
399 | // | |
400 | // Called by Raw2Digits | |
401 | ||
402 | AliEMCALDigit *digit = 0, *tmpdigit = 0; | |
403 | ||
404 | TIter nextdigit(digitsArr); | |
405 | while (digit == 0 && (tmpdigit = (AliEMCALDigit*) nextdigit())) { | |
406 | if (tmpdigit->GetId() == id) | |
407 | digit = tmpdigit; | |
408 | } | |
409 | ||
410 | if (!digit) { // no digit existed for this tower; create one | |
411 | if (lowGain) | |
412 | amp = Int_t(fHighLowGainFactor * amp); | |
413 | Int_t idigit = digitsArr->GetEntries(); | |
414 | new((*digitsArr)[idigit]) AliEMCALDigit( -1, -1, id, amp, time, idigit) ; | |
415 | } | |
416 | else { // a digit already exists, check range | |
b4133f05 | 417 | // (use high gain if signal < cut value, otherwise low gain) |
82cbdfca | 418 | if (lowGain) { // new digit is low gain |
b4133f05 | 419 | if (digit->GetAmp() > fgkOverflowCut) { // use if stored digit is out of range |
82cbdfca | 420 | digit->SetAmp(Int_t(fHighLowGainFactor * amp)); |
421 | digit->SetTime(time); | |
422 | } | |
423 | } | |
b4133f05 | 424 | else if (amp < fgkOverflowCut) { // new digit is high gain; use if not out of range |
82cbdfca | 425 | digit->SetAmp(amp); |
426 | digit->SetTime(time); | |
427 | } | |
428 | } | |
429 | } | |
430 | ||
431 | //____________________________________________________________________________ | |
e5bbbc4e | 432 | void AliEMCALRawUtils::FitRaw(TGraph * gSig, TF1* signalF, Float_t & amp, Float_t & time) const |
ee299369 | 433 | { |
434 | // Fits the raw signal time distribution; from AliEMCALGetter | |
435 | ||
ee299369 | 436 | amp = time = 0. ; |
82cbdfca | 437 | Double_t ped = 0; |
438 | Int_t nPed = 0; | |
ee299369 | 439 | |
b4133f05 | 440 | for (Int_t index = 0; index < fNPedSamples; index++) { |
e9dbb64a | 441 | Double_t ttime, signal; |
82cbdfca | 442 | gSig->GetPoint(index, ttime, signal) ; |
443 | if (signal > 0) { | |
444 | ped += signal; | |
445 | nPed++; | |
ee299369 | 446 | } |
447 | } | |
e9dbb64a | 448 | |
82cbdfca | 449 | if (nPed > 0) |
450 | ped /= nPed; | |
e9dbb64a | 451 | else { |
8cb998bd | 452 | AliWarning("Could not determine pedestal"); |
82cbdfca | 453 | ped = 10; // put some small value as first guess |
e9dbb64a | 454 | } |
82cbdfca | 455 | |
e5bbbc4e | 456 | Int_t maxFound = 0; |
457 | Int_t iMax = 0; | |
e9dbb64a | 458 | Float_t max = -1; |
e5bbbc4e | 459 | Float_t maxFit = gSig->GetN(); |
460 | Float_t minAfterSig = 9999; | |
461 | Int_t tminAfterSig = gSig->GetN(); | |
462 | Int_t nPedAfterSig = 0; | |
463 | Int_t plateauWidth = 0; | |
464 | Int_t plateauStart = 9999; | |
465 | Float_t cut = 0.3; | |
e9dbb64a | 466 | |
b4133f05 | 467 | for (Int_t i=fNPedSamples; i < gSig->GetN(); i++) { |
e9dbb64a | 468 | Double_t ttime, signal; |
469 | gSig->GetPoint(i, ttime, signal) ; | |
e5bbbc4e | 470 | if (!maxFound && signal > max) { |
471 | iMax = i; | |
e9dbb64a | 472 | max = signal; |
473 | } | |
b4133f05 | 474 | else if ( max > ped + fNoiseThreshold ) { |
e5bbbc4e | 475 | maxFound = 1; |
476 | minAfterSig = signal; | |
477 | tminAfterSig = i; | |
e9dbb64a | 478 | } |
e5bbbc4e | 479 | if (maxFound) { |
480 | if ( signal < minAfterSig) { | |
481 | minAfterSig = signal; | |
482 | tminAfterSig = i; | |
e9dbb64a | 483 | } |
e5bbbc4e | 484 | if (i > tminAfterSig + 5) { // Two close peaks; end fit at minimum |
485 | maxFit = tminAfterSig; | |
e9dbb64a | 486 | break; |
487 | } | |
e5bbbc4e | 488 | if ( signal < cut*max){ //stop fit at 30% amplitude(avoid the pulse shape falling edge) |
489 | maxFit = i; | |
c61fe3b4 | 490 | break; |
491 | } | |
b4133f05 | 492 | if ( signal < ped + fNoiseThreshold) |
e5bbbc4e | 493 | nPedAfterSig++; |
494 | if (nPedAfterSig >= 5) { // include 5 pedestal bins after peak | |
495 | maxFit = i; | |
e9dbb64a | 496 | break; |
497 | } | |
5a056daa | 498 | } |
fb070798 | 499 | //Add check on plateau |
500 | if (signal >= fgkRawSignalOverflow - fNoiseThreshold) { | |
e5bbbc4e | 501 | if(plateauWidth == 0) plateauStart = i; |
502 | plateauWidth++; | |
fb070798 | 503 | } |
504 | } | |
505 | ||
e5bbbc4e | 506 | if(plateauWidth > 0) { |
507 | for(int j = 0; j < plateauWidth; j++) { | |
fb070798 | 508 | //Note, have to remove the same point N times because after each |
509 | //remove, the positions of all subsequent points have shifted down | |
e5bbbc4e | 510 | gSig->RemovePoint(plateauStart); |
fb070798 | 511 | } |
82cbdfca | 512 | } |
5a056daa | 513 | |
b4133f05 | 514 | if ( max - ped > fNoiseThreshold ) { // else its noise |
e9dbb64a | 515 | AliDebug(2,Form("Fitting max %d ped %d", max, ped)); |
e5bbbc4e | 516 | signalF->SetRange(0,maxFit); |
8cb998bd | 517 | |
518 | if(max-ped > 50) | |
519 | signalF->SetParLimits(2,1,3); | |
520 | ||
521 | signalF->SetParameter(4, ped) ; | |
e5bbbc4e | 522 | signalF->SetParameter(1, iMax); |
8cb998bd | 523 | signalF->SetParameter(0, max); |
524 | ||
525 | gSig->Fit(signalF, "QROW"); // Note option 'W': equal errors on all points | |
526 | amp = signalF->GetParameter(0); | |
527 | time = signalF->GetParameter(1)*GetRawFormatTimeBinWidth() - fgTimeTrigger; | |
ee299369 | 528 | } |
529 | return; | |
530 | } | |
531 | //__________________________________________________________________ | |
532 | Double_t AliEMCALRawUtils::RawResponseFunction(Double_t *x, Double_t *par) | |
533 | { | |
8cb998bd | 534 | // Matches version used in 2007 beam test |
535 | // | |
ee299369 | 536 | // Shape of the electronics raw reponse: |
537 | // It is a semi-gaussian, 2nd order Gamma function of the general form | |
538 | // | |
539 | // t' = (t - t0 + tau) / tau | |
540 | // F = A * t**N * exp( N * ( 1 - t) ) for t >= 0 | |
541 | // F = 0 for t < 0 | |
542 | // | |
543 | // parameters: | |
8cb998bd | 544 | // A: par[0] // Amplitude = peak value |
545 | // t0: par[1] | |
546 | // tau: par[2] | |
547 | // N: par[3] | |
548 | // ped: par[4] | |
ee299369 | 549 | // |
550 | Double_t signal ; | |
8cb998bd | 551 | Double_t tau =par[2]; |
e5bbbc4e | 552 | Double_t n =par[3]; |
8cb998bd | 553 | Double_t ped = par[4]; |
554 | Double_t xx = ( x[0] - par[1] + tau ) / tau ; | |
ee299369 | 555 | |
5a056daa | 556 | if (xx <= 0) |
8cb998bd | 557 | signal = ped ; |
ee299369 | 558 | else { |
e5bbbc4e | 559 | signal = ped + par[0] * TMath::Power(xx , n) * TMath::Exp(n * (1 - xx )) ; |
ee299369 | 560 | } |
561 | return signal ; | |
562 | } | |
563 | ||
564 | //__________________________________________________________________ | |
565 | Bool_t AliEMCALRawUtils::RawSampledResponse( | |
566 | const Double_t dtime, const Double_t damp, Int_t * adcH, Int_t * adcL) const | |
567 | { | |
568 | // for a start time dtime and an amplitude damp given by digit, | |
569 | // calculates the raw sampled response AliEMCAL::RawResponseFunction | |
570 | ||
ee299369 | 571 | Bool_t lowGain = kFALSE ; |
572 | ||
48a56166 | 573 | // A: par[0] // Amplitude = peak value |
574 | // t0: par[1] | |
575 | // tau: par[2] | |
576 | // N: par[3] | |
577 | // ped: par[4] | |
578 | ||
56e13066 | 579 | TF1 signalF("signal", RawResponseFunction, 0, GetRawFormatTimeBins(), 5); |
48a56166 | 580 | signalF.SetParameter(0, damp) ; |
56e13066 | 581 | signalF.SetParameter(1, (dtime + fgTimeTrigger)/fgTimeBinWidth) ; |
b4133f05 | 582 | signalF.SetParameter(2, fTau) ; |
583 | signalF.SetParameter(3, fOrder); | |
fe93d365 | 584 | signalF.SetParameter(4, fgPedestalValue); |
ee299369 | 585 | |
586 | for (Int_t iTime = 0; iTime < GetRawFormatTimeBins(); iTime++) { | |
56e13066 | 587 | Double_t signal = signalF.Eval(iTime) ; |
fe93d365 | 588 | |
589 | //According to Terry Awes, 13-Apr-2008 | |
590 | //add gaussian noise in quadrature to each sample | |
591 | //Double_t noise = gRandom->Gaus(0.,fgFEENoise); | |
592 | //signal = sqrt(signal*signal + noise*noise); | |
593 | ||
ee299369 | 594 | adcH[iTime] = static_cast<Int_t>(signal + 0.5) ; |
b4133f05 | 595 | if ( adcH[iTime] > fgkRawSignalOverflow ){ // larger than 10 bits |
596 | adcH[iTime] = fgkRawSignalOverflow ; | |
ee299369 | 597 | lowGain = kTRUE ; |
598 | } | |
599 | ||
600 | signal /= fHighLowGainFactor; | |
601 | ||
602 | adcL[iTime] = static_cast<Int_t>(signal + 0.5) ; | |
b4133f05 | 603 | if ( adcL[iTime] > fgkRawSignalOverflow) // larger than 10 bits |
604 | adcL[iTime] = fgkRawSignalOverflow ; | |
ee299369 | 605 | } |
606 | return lowGain ; | |
607 | } |