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Comparing UserCode/cbrown/AnalysisFramework/Plotting/Modules/Systematics.C (file contents):
Revision 1.13 by buchmann, Tue Aug 16 17:08:40 2011 UTC vs.
Revision 1.23 by pablom, Wed Aug 31 10:21:17 2011 UTC

#	Line 157 | Line 157 | TH1F* plotEff(TTree* events, TCut kbase,
157
158
159		//________________________________________________________________________________________
160	+	// Master Formula
161	+	void master_formula(std::vector<float> eff, float &errHi, float &errLo) {
162	+
163	+	float x0 = eff[0];
164	+	float deltaPos = 0, deltaNeg = 0;
165	+	for(int k = 0; k < (eff.size()-1)/2; k++) {
166	+	float xneg = eff[2*k+2];
167	+	float xpos = eff[2*k+1];
168	+	if(xpos-x0>0 || xneg-x0>0) {
169	+	if(xpos-x0 > xneg-x0) {
170	+	deltaPos += (xpos-x0)*(xpos-x0);
171	+	} else {
172	+	deltaPos += (xneg-x0)*(xneg-x0);
173	+	}
174	+	}
175	+	if(x0-xpos>0 || x0-xneg>0) {
176	+	if(x0-xpos > x0-xneg) {
177	+	deltaNeg += (xpos-x0)*(xpos-x0);
178	+	} else {
179	+	deltaNeg += (xneg-x0)*(xneg-x0);
180	+	}
181	+	}
182	+	}
183	+	errHi = sqrt(deltaPos);
184	+	errLo = sqrt(deltaNeg);
185	+
186	+	}
187	+
188	+
189	+	//________________________________________________________________________________________
190	+	// Get normalization factor for the PDFs
191	+	float get_norm_pdf_factor(TTree *events, int k) {
192	+
193	+	TH1F *haux = new TH1F("haux", "", 1000, 0, 15);
194	+	char nameVar[20];
195	+	sprintf(nameVar, "pdfW[%d]", k);
196	+	events->Project("haux", nameVar);
197	+	float factor = haux->Integral();
198	+
199	+	delete haux;
200	+
201	+	return factor;
202	+
203	+	}
204	+
205	+
206	+
207	+	//________________________________________________________________________________________
208		// Pile-up efficiency
209		float pileup(TTree *events, bool requireZ, string informalname, string addcut="",Float_t myJzbMax = 140. ) {
210		nBins = 16;
#	Line 182 | Line 230 | float pileup(TTree *events, bool require
230		if(!automatized) dout << "  PU: " << funcUp->Eval(jzbSel) << " " <<  func->Eval(jzbSel)
231		<< "(" << (funcUp->Eval(jzbSel)-func->Eval(jzbSel))/func->Eval(jzbSel)*100. << "%)" << std::endl;
232
233	<	return (funcUp->Eval(jzbSel)-func->Eval(jzbSel))/func->Eval(jzbSel)*100.;
233	>	return (funcUp->Eval(jzbSel)-func->Eval(jzbSel))/func->Eval(jzbSel);
234
235		}
236
#	Line 218 | Line 266 | void PeakError(TTree *events,float &resu
266		else if(i==1) resdown=res;
267		else if(i==2) resup=res;
268		}
269	<	if(TMath::Abs(rescent-resup)>TMath::Abs(rescent-resdown)) result=(TMath::Abs(rescent-resup)/rescent)*100;
270	<	else result=(TMath::Abs(rescent-resdown)/rescent)*100;
269	>	if(TMath::Abs(rescent-resup)>TMath::Abs(rescent-resdown)) result=(TMath::Abs(rescent-resup)/rescent);
270	>	else result=(TMath::Abs(rescent-resdown)/rescent);
271		}
272
273		//____________________________________________________________________________________
274		// Total selection efficiency (MC)
275	<	void MCefficiency(TTree *events,float &result, float &resulterr,string mcjzb,bool requireZ,int Neventsinfile, string addcut="") {
275	>	void MCefficiency(TTree *events,float &result, float &resulterr,string mcjzb,bool requireZ,int Neventsinfile, string addcut="", int k = 0) {
276
277		char jzbSelStr[256]; sprintf(jzbSelStr,"%f",jzbSel);
278		// All acceptance cuts at gen. level
279	<	TCut kbase("abs(genMll-91.2)<20&&genNjets>2&&genZPt>0&&genJZB"+geq_or_leq()+TString(jzbSelStr)+"&&genId1==-genId2");
279	>	//TCut kbase("abs(genMll-91.2)<20&&genNjets>2&&genZPt>0&&genJZB"+geq_or_leq()+TString(jzbSelStr)+"&&genId1==-genId2");
280	>	TCut kbase("");
281		if(requireZ) kbase=kbase&&"TMath::Abs(genMID)==23";
282		if(addcut!="") kbase=kbase&&addcut.c_str();//this is mostly for SUSY scans (adding requirements on masses)
283		// Corresponding reco. cuts
284		TCut ksel("pfJetGoodNum>2&&abs(mll-91.2)<20&&id1==id2&&"+TString(mcjzb)+geq_or_leq()+TString(jzbSelStr));
285	<
286	<	events->Draw(mcjzbexpression.c_str(),kbase&&ksel,"goff");
285	>	TCut ksel2("pfJetGoodNum>2&&abs(mll-91.2)<20&&id1==id2&&"+TString(mcjzb)+ngeq_or_leq()+TString("-")+TString(jzbSelStr));
286	>	TCut posSide = kbase&&ksel;
287	>	TCut negSide = kbase&&ksel2;
288	>	string sposSide(posSide);
289	>	string snegSide(negSide);
290	>	char var[20];
291	>	sprintf(var, "pdfW[%d]", k);
292	>	string svar(var);
293	>	string newPosSide = "(" + sposSide + ")*" + svar;
294	>	string newNegSide = "(" + snegSide + ")*" + svar;
295	>
296	>	events->Draw(mcjzbexpression.c_str(), newPosSide.c_str(),"goff");
297		Float_t sel = events->GetSelectedRows();
298	+	Float_t nsel=0;
299	+	if(ConsiderSignalContaminationForLimits) {
300	+	events->Draw(mcjzbexpression.c_str(), newNegSide.c_str(),"goff");
301	+	nsel = events->GetSelectedRows();
302	+	}
303	+	//Corrections due to normalization in the PDF. This has to be applied as well to the number of events in a file if the definition changes at some point.
304	+	float normFactor = get_norm_pdf_factor(events, k);
305	+	sel = sel/normFactor;
306	+	nsel = nsel/normFactor;
307	+
308		//      events->Draw(mcjzbexpression.c_str(),kbase,"goff");
309		//      Float_t tot = events->GetSelectedRows();
310		Float_t tot = Neventsinfile;
311
312	<	result=sel/tot;
313	<	resulterr=TMath::Sqrt(sel/tot*(1-sel/tot)/tot);
314	<	if(!automatized) dout << "  MC efficiency: " << result << "+-" << resulterr << std::endl;
312	>	if(ConsiderSignalContaminationForLimits) {
313	>	result=(sel-nsel)/tot;
314	>	resulterr=(1.0/tot)*TMath::Sqrt(sel+nsel+(sel-nsel)*(sel-nsel)/tot);
315	>	} else {//no signal contamination considered:
316	>	result=(sel)/tot;
317	>	resulterr=TMath::Sqrt(sel/tot*(1+sel/tot)/tot);
318	>	}
319	>	if(!automatized) dout << "  MC efficiency: " << result << "+-" << resulterr << "  ( JZB>" << jzbSel << " : " << sel << " , JZB<-" << jzbSel << " : " << nsel << " and nevents=" << tot << ")" << std::endl;
320		}
321
322		void JZBefficiency(TTree *events, string informalname, float &jzbeff, float &jzbefferr, bool requireZ, string addcut="") {
323		TCut kbase("abs(genMll-91.2)<20&&genNjets>2&&genZPt>0&&abs(mll-91.2)<20&&((id1+1)*(id2+1)*ch1*ch2)!=-2");
250	–	cout << "Getting started with JZB efficiency" << endl;
324		if(addcut!="") kbase=kbase&&addcut.c_str();//this is mostly for SUSY scans (adding requirements on masses)
325		if(requireZ) kbase=kbase&&"TMath::Abs(genMID)==23";
326		TH1F* hLM4 = plotEff(events,kbase,informalname);
#	Line 291 | Line 364 | void JZBjetScale(TTree *events, float &j
364		if(!automatized) dout << "    JESup: " << effp << " (" << (effp-eff)/eff*100. << "%)" << std::endl;
365		if(!automatized) dout << "    central:  " << eff << std::endl;
366		if(!automatized) dout << "    JESdown: " << effm << " (" << (effm-eff)/eff*100. << "%)" << std::endl;
367	<	jesup=(effp-eff)/eff*100.;
368	<	jesdown=(effm-eff)/eff*100.;
367	>	jesup=(effp-eff)/eff;
368	>	jesdown=(effm-eff)/eff;
369		}
370
371		//________________________________________________________________________
#	Line 317 | Line 390 | void doJZBscale(TTree *events, float &do
390		if(!automatized) dout << "  efficiency at JZB==" << jzbSel*(1.+systematic)  << "(-"<<syst*100<<"%) : " << effp << " (" << ((effp-eff)/eff)*100. << "%)"  << std::endl;
391		if(!automatized) dout << "  efficiency at JZB==" << jzbSel  << ": " << eff << std::endl;
392		if(!automatized) dout << "  efficiency at JZB==" << jzbSel*(1.-systematic)  << "(-"<<syst*100<<"%) : " << effm << " (" << ((effm-eff)/eff)*100. << "%)"  << std::endl;
393	<	up=((effp-eff)/eff)*100;
394	<	down=((effm-eff)/eff)*100;
393	>	up=((effp-eff)/eff);
394	>	down=((effm-eff)/eff);
395		}
396
397		//________________________________________________________________________
#	Line 347 | Line 420 | void JZBresponse(TTree *events, bool req
420		}
421
422
423	<	void do_systematics_for_one_file(TTree *events,int Neventsinfile,string informalname, vector<vector<float> > &results,string mcjzb,string datajzb,float peakerror,bool requireZ=false, string addcut="") {
423	>	//________________________________________________________________________________________
424	>	// PDF uncertainty
425	>	float get_pdf_uncertainty(TTree *events, string mcjzb, bool requireZ, int Neventsinfile, string addcut="") {
426	>
427	>	int numberOfPDFs = 44;
428	>	std::vector<float> efficiency;
429	>	for(int k = 1; k < numberOfPDFs; k++) {
430	>	float result, resulterr;
431	>	MCefficiency(events, result, resulterr, mcjzb, requireZ, Neventsinfile, addcut, k);
432	>	efficiency.push_back(result);
433	>	}
434	>	float errHi, errLow;
435	>	master_formula(efficiency, errHi, errLow);
436	>	if(errHi>errLow) return errHi;
437	>	return errLow;
438	>
439	>	}
440	>
441	>
442	>
443	>	void do_systematics_for_one_file(TTree *events,int Neventsinfile,string informalname, vector<vector<float> > &results,string mcjzb,string datajzb,float peakerror,bool requireZ=false, string addcut="", bool ismSUGRA=false) {
444
445		float JetEnergyScaleUncert=0.1;
446		float JZBScaleUncert=0.1;
447		mcjzbexpression=mcjzb;
448	<	float triggereff=4;//percent!
448	>	float triggereff=4.0/100;// in range [0,1]
449		dout << "Trigger efficiency not implemented in this script  yet, still using external one" << endl;
450	<	float leptonseleff=2;//percent!
450	>	float leptonseleff=2.0/100;// in range [0,1]
451		dout << "Lepton selection efficiency not implemented in this script  yet, still using external one" << endl;
452
453		float mceff,mcefferr,jzbeff,jzbefferr;
#	Line 381 | Line 474 | void do_systematics_for_one_file(TTree *
474
475		if(!automatized) dout << "Pileup: " << std::endl;
476		float resolution=pileup(events,requireZ,informalname,addcut);
477	<
477	>
478	>	float PDFuncert=0;
479	>	if(ismSUGRA) PDFuncert = get_pdf_uncertainty(events, mcjzb, requireZ, Neventsinfile, addcut);
480	>
481		dout << "_______________________________________________" << endl;
482		dout << "                 SUMMARY FOR " << informalname << " with JZB>" << jzbSel << "  (all in %) ";
483		if(addcut!="") dout << "With additional cut: " << addcut;
484		dout << endl;
485	<	dout << "MC efficiency: " << 100*mceff << "+/-" << 100*mcefferr << endl;
486	<	dout << "Trigger efficiency: " << triggereff << endl;
487	<	dout << "Lepton Sel Eff: " << leptonseleff << endl;
488	<	dout << "Jet energy scale: " << jesup << " " << jesdown << endl;
489	<	dout << "JZB Scale Uncert: " << scaledown << " " << scaleup << endl;
490	<	dout << "Resolution : " << resolution << endl;
491	<	dout << "From peak : " << sysfrompeak << endl;
492	<	dout << "JZB efficiency: " << jzbeff << "+/-" << jzbefferr << " (not yet included below) " << endl;
493	<	dout << "JZB response  : " << resp << " +/-" << resperr << " (not yet included below) " << endl;
485	>	dout << "MC efficiency: " << mceff << "+/-" << mcefferr << endl; // in range [0,1]
486	>	dout << "Trigger efficiency: " << triggereff << endl; // in range [0,1]
487	>	dout << "Lepton Sel Eff: " << leptonseleff << endl; // in range [0,1]
488	>	dout << "Jet energy scale: " << jesup << " " << jesdown << endl; // in range [0,1]
489	>	dout << "JZB Scale Uncert: " << scaledown << " " << scaleup << endl; // in range [0,1]
490	>	dout << "Resolution : " << resolution << endl; // in range [0,1]
491	>	dout << "From peak : " << sysfrompeak << endl; // in range [0,1]
492	>	dout << "PDF uncertainty  : " << PDFuncert << " (not yet included below) " << endl; // in range [0,1]
493	>	dout << "JZB efficiency: " << jzbeff << "+/-" << jzbefferr << " (not yet included below) " << endl; // in range [0,1]
494	>	dout << "JZB response  : " << resp << " +/-" << resperr << " (not yet included below) " << endl; // in range [0,1]
495
496		float toterr=0;
497	<	toterr+=(triggereff/100)*(triggereff/100);
498	<	toterr+=(leptonseleff/100)*(leptonseleff/100);
499	<	if(fabs(jesup)>fabs(jesdown)) toterr+=(jesup/100)*(jesup/100); else toterr+=(jesdown/100)*(jesdown/100);
500	<	if(fabs(scaleup)>fabs(scaledown)) toterr+=(scaleup/100)*(scaleup/100); else toterr+=(scaledown/100)*(scaledown/100);
501	<	toterr+=(resolution/100)*(resolution/100);
502	<	toterr+=(sysfrompeak/100)*(sysfrompeak/100);
503	<	toterr=TMath::Sqrt(toterr);
504	<	dout << "FINAL RESULT : " << 100*mceff << " +/- "<< 100*mcefferr << " (stat) +/- " << 100*toterr << " (syst)   %" << endl;
505	<	dout << "     we thus use the sqrt of the sum of the squares which is : " << 100*TMath::Sqrt(mcefferr*mcefferr+(toterr*toterr)) << endl;
497	>	toterr+=(triggereff)*(triggereff);
498	>	toterr+=(leptonseleff)*(leptonseleff);
499	>	if(fabs(jesup)>fabs(jesdown)) toterr+=(jesup*jesup); else toterr+=(jesdown*jesdown);
500	>	if(fabs(scaleup)>fabs(scaledown)) toterr+=(scaleup*scaleup); else toterr+=(scaledown*scaledown);
501	>	toterr+=(resolution*resolution);
502	>	toterr+=(sysfrompeak*sysfrompeak);
503	>	if(ismSUGRA) toterr+=(PDFuncert*PDFuncert);
504	>	dout << "TOTAL SYSTEMATICS: " << TMath::Sqrt(toterr) << " --> " << TMath::Sqrt(toterr)*mceff << endl;
505	>	float systerr=TMath::Sqrt(toterr)*mceff;
506	>	toterr=TMath::Sqrt(toterr*mceff*mceff+mcefferr*mcefferr);//also includes stat err!
507	>
508	>	dout << "FINAL RESULT : " << 100*mceff << " +/- "<< 100*mcefferr << " (stat) +/- " << 100*systerr << " (syst)   %" << endl;
509	>	dout << "     we thus use the sqrt of the sum of the squares of the stat & syst err, which is : " << 100*toterr << endl;
510	>
511	>	//Do not modify the lines below or mess with the order; this order is expected by all limit calculating functions!
512		vector<float> res;
513		res.push_back(jzbSel);
514		res.push_back(mceff);
515		res.push_back(mcefferr);
516		res.push_back(toterr);
517		res.push_back(TMath::Sqrt((mcefferr)*(mcefferr)+(toterr*toterr)));
518	<	if(fabs(jesup)>fabs(jesdown)) res.push_back(fabs(jesup/100)); else res.push_back(fabs(jesdown)/100);
519	<	if(fabs(scaleup)>fabs(scaledown)) res.push_back(fabs(scaleup)/100); else res.push_back(fabs(scaledown)/100);
520	<	res.push_back(fabs(resolution)/100);
518	>	if(fabs(jesup)>fabs(jesdown)) res.push_back(fabs(jesup)); else res.push_back(fabs(jesdown));
519	>	if(fabs(scaleup)>fabs(scaledown)) res.push_back(fabs(scaleup)); else res.push_back(fabs(scaledown));
520	>	res.push_back(fabs(resolution));
521	>	if(ismSUGRA) res.push_back(PDFuncert);
522		results.push_back(res);
523		}
524

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