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Clean-up of code to conform with the style used
[u/mrichter/AliRoot.git] / PWGLF / FORWARD / analysis2 / AliForwardQATask.cxx
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96624385 1//
2// Calculate the multiplicity in the forward regions event-by-event
3//
4// Inputs:
5// - AliESDEvent
6//
7// Outputs:
8// - AliAODForwardMult
9//
10// Histograms
11//
12// Corrections used
13//
14#include "AliForwardQATask.h"
15#include "AliForwardUtil.h"
16#include "AliTriggerAnalysis.h"
17#include "AliPhysicsSelection.h"
18#include "AliLog.h"
19#include "AliESDEvent.h"
20#include "AliAODHandler.h"
21#include "AliMultiplicity.h"
22#include "AliInputEventHandler.h"
23#include "AliForwardCorrectionManager.h"
24#include "AliAnalysisManager.h"
25#include "AliAODForwardMult.h"
26#include <TH1.h>
27#include <TDirectory.h>
28#include <TTree.h>
29#include <TROOT.h>
e2213ed5 30#include <TStopwatch.h>
96624385 31
32//====================================================================
33AliForwardQATask::AliForwardQATask()
34 : AliAnalysisTaskSE(),
35 fEnableLowFlux(false),
36 fFirstEvent(true),
37 fCorrManager(0),
38 fESDFMD(),
39 fHistos(),
40 fEventInspector(),
41 fEnergyFitter(),
42 fSharingFilter(),
43 fDensityCalculator(),
9b2f2e39 44 fList(0),
45 fDebug(0)
96624385 46{
47 //
48 // Constructor
49 //
50}
51
52//____________________________________________________________________
53AliForwardQATask::AliForwardQATask(const char* name)
54 : AliAnalysisTaskSE(name),
55 fEnableLowFlux(false),
56 fFirstEvent(true),
57 fCorrManager(0),
58 fESDFMD(),
59 fHistos(),
60 fEventInspector("event"),
61 fEnergyFitter("energy"),
62 fSharingFilter("sharing"),
63 fDensityCalculator("density"),
9b2f2e39 64 fList(0),
65 fDebug(0)
96624385 66{
67 //
68 // Constructor
69 //
70 // Parameters:
71 // name Name of task
72 //
73 DefineOutput(1, TList::Class());
74 DefineOutput(2, TList::Class());
75 fCorrManager = &AliForwardCorrectionManager::Instance();
76 fEnergyFitter.SetNParticles(1); // Just find the 1st peak
77 fEnergyFitter.SetDoMakeObject(false);
78 fEnergyFitter.SetUseIncreasingBins(true);
79 fEnergyFitter.SetDoFits(kTRUE);
80 fEnergyFitter.SetLowCut(0.4);
81 fEnergyFitter.SetFitRangeBinWidth(4);
82 fEnergyFitter.SetMinEntries(1000);
83}
84
85//____________________________________________________________________
86AliForwardQATask::AliForwardQATask(const AliForwardQATask& o)
87 : AliAnalysisTaskSE(o),
88 fEnableLowFlux(o.fEnableLowFlux),
89 fFirstEvent(o.fFirstEvent),
90 fCorrManager(o.fCorrManager),
91 fESDFMD(o.fESDFMD),
92 fHistos(o.fHistos),
93 fEventInspector(o.fEventInspector),
94 fEnergyFitter(o.fEnergyFitter),
95 fSharingFilter(o.fSharingFilter),
96 fDensityCalculator(o.fDensityCalculator),
9b2f2e39 97 fList(o.fList),
98 fDebug(o.fDebug)
96624385 99{
100 //
101 // Copy constructor
102 //
103 // Parameters:
104 // o Object to copy from
105 //
106 DefineOutput(1, TList::Class());
107 DefineOutput(2, TList::Class());
108}
109
110//____________________________________________________________________
111AliForwardQATask&
112AliForwardQATask::operator=(const AliForwardQATask& o)
113{
114 //
115 // Assignment operator
116 //
117 // Parameters:
118 // o Object to assign from
119 //
120 // Return:
121 // Reference to this object
122 //
d015ecfe 123 if (&o == this) return *this;
96624385 124 AliAnalysisTaskSE::operator=(o);
125
126 fEnableLowFlux = o.fEnableLowFlux;
127 fFirstEvent = o.fFirstEvent;
128 fCorrManager = o.fCorrManager;
129 fEventInspector = o.fEventInspector;
130 fEnergyFitter = o.fEnergyFitter;
131 fSharingFilter = o.fSharingFilter;
132 fDensityCalculator = o.fDensityCalculator;
133 fHistos = o.fHistos;
134 fList = o.fList;
9b2f2e39 135 fDebug = o.fDebug;
96624385 136
137 return *this;
138}
139
140//____________________________________________________________________
141void
142AliForwardQATask::SetDebug(Int_t dbg)
143{
144 //
145 // Set debug level
146 //
147 // Parameters:
148 // dbg Debug level
149 //
9b2f2e39 150 fDebug = dbg;
96624385 151 fEventInspector.SetDebug(dbg);
152 fEnergyFitter.SetDebug(dbg);
153 fSharingFilter.SetDebug(dbg);
154 fDensityCalculator.SetDebug(dbg);
155}
156
157//____________________________________________________________________
158Bool_t
159AliForwardQATask::CheckCorrections(UInt_t what) const
160{
161 //
162 // Check if all needed corrections are there and accounted for. If not,
163 // do a Fatal exit
164 //
165 // Parameters:
166 // what Which corrections is needed
167 //
168 // Return:
169 // true if all present, false otherwise
170 //
171
172 AliForwardCorrectionManager& fcm = AliForwardCorrectionManager::Instance();
173 // Check that we have the energy loss fits, needed by
174 // AliFMDSharingFilter
175 // AliFMDDensityCalculator
176 if (what & AliForwardCorrectionManager::kELossFits && !fcm.GetELossFit()) {
460a5c02 177 AliWarning("No energy loss fits");
96624385 178 return false;
179 }
180 return true;
181}
182
183//____________________________________________________________________
184Bool_t
185AliForwardQATask::ReadCorrections(const TAxis*& pe,
186 const TAxis*& pv,
187 Bool_t mc)
188{
189 //
190 // Read corrections
191 //
192 //
193 UInt_t what = AliForwardCorrectionManager::kAll;
194 what ^= AliForwardCorrectionManager::kDoubleHit;
195 what ^= AliForwardCorrectionManager::kVertexBias;
196 what ^= AliForwardCorrectionManager::kAcceptance;
197 what ^= AliForwardCorrectionManager::kMergingEfficiency;
198
199 AliForwardCorrectionManager& fcm = AliForwardCorrectionManager::Instance();
200 if (!fcm.Init(GetEventInspector().GetCollisionSystem(),
201 GetEventInspector().GetEnergy(),
202 GetEventInspector().GetField(),
203 mc,
204 what)) return false;
460a5c02 205 if (!CheckCorrections(what)) {
206 return false;
207 }
96624385 208
209 // Sett our persistency pointer
210 // fCorrManager = &fcm;
211
212 // Get the eta axis from the secondary maps - if read in
213 if (!pe) {
214 pe = fcm.GetEtaAxis();
215 if (!pe) AliFatal("No eta axis defined");
216 }
217 // Get the vertex axis from the secondary maps - if read in
218 if (!pv) {
219 pv = fcm.GetVertexAxis();
220 if (!pv) AliFatal("No vertex axis defined");
221 }
222
223 return true;
224}
225
226//____________________________________________________________________
227AliESDEvent*
228AliForwardQATask::GetESDEvent()
229{
230 //
231 // Get the ESD event. IF this is the first event, initialise
232 //
6ff251d8 233 if (IsZombie()) return 0;
96624385 234 AliESDEvent* esd = dynamic_cast<AliESDEvent*>(InputEvent());
235 if (!esd) {
236 AliWarning("No ESD event found for input event");
237 return 0;
238 }
239
240 // On the first event, initialize the parameters
241 if (fFirstEvent && esd->GetESDRun()) {
242 GetEventInspector().ReadRunDetails(esd);
243
422a78c8 244 AliInfoF("Initializing with parameters from the ESD:\n"
245 " AliESDEvent::GetBeamEnergy() ->%f\n"
246 " AliESDEvent::GetBeamType() ->%s\n"
247 " AliESDEvent::GetCurrentL3() ->%f\n"
248 " AliESDEvent::GetMagneticField()->%f\n"
6ff251d8 249 " AliESDEvent::GetRunNumber() ->%d",
422a78c8 250 esd->GetBeamEnergy(),
251 esd->GetBeamType(),
252 esd->GetCurrentL3(),
253 esd->GetMagneticField(),
254 esd->GetRunNumber());
96624385 255
96624385 256
422a78c8 257 if (!InitializeSubs()) {
258 AliWarning("Initialisation of sub algorithms failed!");
6ff251d8 259 SetZombie(true);
260 esd = 0;
422a78c8 261 return 0;
262 }
460a5c02 263 AliInfoF("Clearing first event flag from %s to false",
264 fFirstEvent ? "true" : "false");
265 fFirstEvent = false;
96624385 266 }
267 return esd;
268}
269//____________________________________________________________________
422a78c8 270Bool_t
96624385 271AliForwardQATask::InitializeSubs()
272{
273 //
274 // Initialise the sub objects and stuff. Called on first event
275 //
276 //
277 const TAxis* pe = 0;
278 const TAxis* pv = 0;
279
d70d2a44 280 if (!ReadCorrections(pe,pv)) {
281 AliWarning("Using default binning");
282 pv = new TAxis(10,-10, 10);
283 pe = new TAxis(240,-6,6);
460a5c02 284 }
96624385 285
286 fHistos.Init(*pe);
287
288 fEventInspector.Init(*pv);
289 fEnergyFitter.Init(*pe);
290 fSharingFilter.Init();
291 fDensityCalculator.Init(*pe);
292
293 this->Print();
422a78c8 294
295 return true;
96624385 296}
297
298//____________________________________________________________________
299void
300AliForwardQATask::UserCreateOutputObjects()
301{
302 //
303 // Create output objects
304 //
305 //
306 fList = new TList;
307 fList->SetOwner();
308
309 fEventInspector.DefineOutput(fList);
310 fEnergyFitter.DefineOutput(fList);
311 fSharingFilter.DefineOutput(fList);
312 fDensityCalculator.DefineOutput(fList);
313
314 PostData(1, fList);
315}
316//____________________________________________________________________
317void
318AliForwardQATask::UserExec(Option_t*)
319{
320 //
321 // Process each event
322 //
323 // Parameters:
324 // option Not used
325 //
326
327 // static Int_t cnt = 0;
328 // cnt++;
329 // Get the input data
330 AliESDEvent* esd = GetESDEvent();
422a78c8 331 if (!esd) {
332 AliWarning("Got no ESD event");
333 return;
334 }
460a5c02 335 if (fFirstEvent) {
336 // If the first event flag wasn't cleared in the above call to
337 // GetESDEvent, we should not do anything, since nothing has been
338 // initialised yet, so we opt out here (with a warning)
339 AliWarning("Nothing has been initialized yet, opt'ing out");
340 return;
341 }
96624385 342
343 // Clear stuff
344 fHistos.Clear();
345 fESDFMD.Clear();
346
347 Bool_t lowFlux = kFALSE;
348 UInt_t triggers = 0;
349 UShort_t ivz = 0;
350 Double_t vz = 0;
351 Double_t cent = -1;
352 UShort_t nClusters = 0;
353 UInt_t found = fEventInspector.Process(esd, triggers, lowFlux,
354 ivz, vz, cent, nClusters);
355
356 if (found & AliFMDEventInspector::kNoEvent) return;
357 if (found & AliFMDEventInspector::kNoTriggers) return;
358 if (found & AliFMDEventInspector::kNoSPD) return;
359 if (found & AliFMDEventInspector::kNoFMD) return;
360 if (found & AliFMDEventInspector::kNoVertex) return;
361 if (triggers & AliAODForwardMult::kPileUp) return;
362 if (found & AliFMDEventInspector::kBadVertex) return;
363
364 // We we do not want to use low flux specific code, we disable it here.
365 if (!fEnableLowFlux) lowFlux = false;
366
367 // Get FMD data
368 AliESDFMD* esdFMD = esd->GetFMDData();
369
370 // Run the energy loss fitter
371 if (!fEnergyFitter.Accumulate(*esdFMD, cent,
372 triggers & AliAODForwardMult::kEmpty)) {
373 AliWarning("Energy fitter failed");
374 return;
375 }
4077f3e8 376
96624385 377 // // Apply the sharing filter (or hit merging or clustering if you like)
6f4a5c0d 378 if (!fSharingFilter.Filter(*esdFMD, lowFlux, fESDFMD, vz)) {
96624385 379 AliWarning("Sharing filter failed!");
380 return;
381 }
4077f3e8 382
96624385 383 // Calculate the inclusive charged particle density
384 if (!fDensityCalculator.Calculate(fESDFMD, fHistos, ivz, lowFlux)) {
385 // if (!fDensityCalculator.Calculate(*esdFMD, fHistos, ivz, lowFlux)) {
386 AliWarning("Density calculator failed!");
387 return;
388 }
4077f3e8 389
96624385 390 PostData(1, fList);
391}
392
393//____________________________________________________________________
394void
395AliForwardQATask::Terminate(Option_t*)
396{
397 //
398 // End of job
399 //
400 // Parameters:
401 // option Not used
402 //
9b2f2e39 403 if (fDebug) AliInfo("In Forwards terminate");
e2213ed5 404 TStopwatch swt;
405 swt.Start();
96624385 406
407 TList* list = dynamic_cast<TList*>(GetOutputData(1));
408 if (!list) {
409 AliError(Form("No output list defined (%p)", GetOutputData(1)));
410 if (GetOutputData(1)) GetOutputData(1)->Print();
411 return;
412 }
413
414 // Get our histograms from the container
415 TH1I* hEventsTr = 0;//static_cast<TH1I*>(list->FindObject("nEventsTr"));
416 TH1I* hEventsTrVtx = 0;//static_cast<TH1I*>(list->FindObject("nEventsTrVtx"));
417 TH1I* hTriggers = 0;
418 if (!fEventInspector.FetchHistograms(list, hEventsTr,
419 hEventsTrVtx, hTriggers)) {
420 AliError(Form("Didn't get histograms from event selector "
421 "(hEventsTr=%p,hEventsTrVtx=%p)",
422 hEventsTr, hEventsTrVtx));
423 return;
424 }
425
e2213ed5 426 TStopwatch swf;
427 swf.Start();
96624385 428 fEnergyFitter.Fit(list);
e2213ed5 429 swf.Stop();
430 AliInfoF("Fitting took %d real-time seconds, and %f CPU seconds",
431 Int_t(swf.RealTime()), swf.CpuTime());
96624385 432
433 fSharingFilter.ScaleHistograms(list,Int_t(hEventsTr->Integral()));
434 fDensityCalculator.ScaleHistograms(list,Int_t(hEventsTrVtx->Integral()));
435
436 // Make a deep copy and post that as output 2
437 TList* list2 = static_cast<TList*>(list->Clone(Form("%sResults",
438 list->GetName())));
9b2f2e39 439 if (fDebug) AliInfoF("Posting post processing results to %s",
440 list2->GetName());
96624385 441 list2->SetOwner();
442 PostData(2, list2);
443
e2213ed5 444 swt.Stop();
445 AliInfoF("Terminate took %d real-time seconds, and %f CPU seconds",
446 Int_t(swt.RealTime()), swt.CpuTime());
447
96624385 448}
449
450//____________________________________________________________________
451void
452AliForwardQATask::Print(Option_t* option) const
453{
454 //
455 // Print information
456 //
457 // Parameters:
458 // option Not used
459 //
460
461 std::cout << ClassName() << ": " << GetName() << "\n"
462 << " Enable low flux code: " << (fEnableLowFlux ? "yes" : "no")
463 << "\n"
464 << " Off-line trigger mask: 0x"
465 << std::hex << std::setfill('0')
466 << std::setw (8) << fOfflineTriggerMask
467 << std::dec << std::setfill (' ') << std::endl;
468 gROOT->IncreaseDirLevel();
469 if (fCorrManager) fCorrManager->Print();
470 else
471 std::cout << " Correction manager not set yet" << std::endl;
472 GetEventInspector() .Print(option);
473 GetEnergyFitter() .Print(option);
474 GetSharingFilter() .Print(option);
475 gROOT->DecreaseDirLevel();
476}
477
478//
479// EOF
480//