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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 1.30 by buchmann, Wed Sep 7 06:43:24 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", "", 10000, 0, 5);
194	+	char nameVar[20];
195	+	sprintf(nameVar, "pdfW[%d]", k);
196	+	events->Project("haux", nameVar);
197	+	float thisW = haux->Integral();
198	+	events->Project("haux", "pdfW[0]");
199	+	float normW = haux->Integral();
200	+
201	+	float factor=thisW/normW;
202	+
203	+	delete haux;
204	+
205	+	return factor;
206	+
207	+	}
208	+
209	+
210	+
211	+	//________________________________________________________________________________________
212		// Pile-up efficiency
213		float pileup(TTree *events, bool requireZ, string informalname, string addcut="",Float_t myJzbMax = 140. ) {
214		nBins = 16;
#	Line 182 | Line 234 | float pileup(TTree *events, bool require
234		if(!automatized) dout << "  PU: " << funcUp->Eval(jzbSel) << " " <<  func->Eval(jzbSel)
235		<< "(" << (funcUp->Eval(jzbSel)-func->Eval(jzbSel))/func->Eval(jzbSel)*100. << "%)" << std::endl;
236
237	<	return (funcUp->Eval(jzbSel)-func->Eval(jzbSel))/func->Eval(jzbSel)*100.;
237	>	return (funcUp->Eval(jzbSel)-func->Eval(jzbSel))/func->Eval(jzbSel);
238
239		}
240
#	Line 218 | Line 270 | void PeakError(TTree *events,float &resu
270		else if(i==1) resdown=res;
271		else if(i==2) resup=res;
272		}
273	<	if(TMath::Abs(rescent-resup)>TMath::Abs(rescent-resdown)) result=(TMath::Abs(rescent-resup)/rescent)*100;
274	<	else result=(TMath::Abs(rescent-resdown)/rescent)*100;
273	>	if(TMath::Abs(rescent-resup)>TMath::Abs(rescent-resdown)) result=(TMath::Abs(rescent-resup)/rescent);
274	>	else result=(TMath::Abs(rescent-resdown)/rescent);
275		}
276
277		//____________________________________________________________________________________
278		// Total selection efficiency (MC)
279	<	void MCefficiency(TTree *events,float &result, float &resulterr,string mcjzb,bool requireZ,int Neventsinfile, string addcut="") {
279	>	void MCefficiency(TTree *events,float &result, float &resulterr,string mcjzb,bool requireZ,int Neventsinfile, string addcut="", int k = 0) {
280
281		char jzbSelStr[256]; sprintf(jzbSelStr,"%f",jzbSel);
282		// All acceptance cuts at gen. level
283	<	TCut kbase("abs(genMll-91.2)<20&&genNjets>2&&genZPt>0&&genJZB"+geq_or_leq()+TString(jzbSelStr)+"&&genId1==-genId2");
283	>	//TCut kbase("abs(genMll-91.2)<20&&genNjets>2&&genZPt>0&&genJZB"+geq_or_leq()+TString(jzbSelStr)+"&&genId1==-genId2");
284	>	TCut kbase("");
285		if(requireZ) kbase=kbase&&"TMath::Abs(genMID)==23";
286		if(addcut!="") kbase=kbase&&addcut.c_str();//this is mostly for SUSY scans (adding requirements on masses)
287		// Corresponding reco. cuts
288		TCut ksel("pfJetGoodNum>2&&abs(mll-91.2)<20&&id1==id2&&"+TString(mcjzb)+geq_or_leq()+TString(jzbSelStr));
289	<
290	<	events->Draw(mcjzbexpression.c_str(),kbase&&ksel,"goff");
291	<	Float_t sel = events->GetSelectedRows();
289	>	TCut ksel2("pfJetGoodNum>2&&abs(mll-91.2)<20&&id1==id2&&"+TString(mcjzb)+ngeq_or_leq()+TString("-")+TString(jzbSelStr));
290	>	TCut posSide = kbase&&ksel;
291	>	TCut negSide = kbase&&ksel2;
292	>	string sposSide(posSide);
293	>	string snegSide(negSide);
294	>	char var[20];
295	>	sprintf(var, "pdfW[%d]", k);
296	>	string svar(var);
297	>	string newPosSide = "(" + sposSide + ")*" + svar;
298	>	string newNegSide = "(" + snegSide + ")*" + svar;
299	>
300	>	TH1F *effh= new TH1F("effh","effh",1,-14000,14000);
301	>	if(k>=0)events->Draw((mcjzbexpression+">>effh").c_str(), newPosSide.c_str(),"goff");
302	>	else events->Draw((mcjzbexpression+">>effh").c_str(), sposSide.c_str(),"goff");
303	>	Float_t sel = effh->Integral();
304	>	Float_t nsel=0;
305	>	if(ConsiderSignalContaminationForLimits) {
306	>	if(k>=0)events->Draw((mcjzbexpression+">>effh").c_str(), newNegSide.c_str(),"goff");
307	>	else events->Draw((mcjzbexpression+">>effh").c_str(), snegSide.c_str(),"goff");
308	>	nsel = effh->Integral();
309	>	}
310	>	//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.
311	>	float normFactor = 1;
312	>	if(k>=0) get_norm_pdf_factor(events, k);
313	>	sel = sel/normFactor;
314	>	nsel = nsel/normFactor;
315	>
316		//      events->Draw(mcjzbexpression.c_str(),kbase,"goff");
317		//      Float_t tot = events->GetSelectedRows();
318		Float_t tot = Neventsinfile;
319
320	<	result=sel/tot;
321	<	resulterr=TMath::Sqrt(sel/tot*(1-sel/tot)/tot);
322	<	if(!automatized) dout << "  MC efficiency: " << result << "+-" << resulterr << std::endl;
320	>	if(ConsiderSignalContaminationForLimits) {
321	>	result=(sel-nsel)/tot;
322	>	resulterr=(1.0/tot)*TMath::Sqrt(sel+nsel+(sel-nsel)*(sel-nsel)/tot);
323	>	} else {//no signal contamination considered:
324	>	result=(sel)/tot;
325	>	resulterr=TMath::Sqrt(sel/tot*(1+sel/tot)/tot);
326	>	}
327	>	if(!automatized) dout << "  MC efficiency: " << result << "+-" << resulterr << "  ( JZB>" << jzbSel << " : " << sel << " , JZB<-" << jzbSel << " : " << nsel << " and nevents=" << tot << ") with normFact=" << normFactor << std::endl;
328	>	delete effh;
329		}
330
331	+
332	+	//____________________________________________________________________________________
333	+	// Selection efficiency for one process (MC)
334	+	vector<float> processMCefficiency(TTree *events,string mcjzb,bool requireZ,int Neventsinfile, string addcut) {
335	+	vector<float> process_efficiencies;
336	+	for(int iprocess=0;iprocess<=10;iprocess++) {
337	+	float this_process_efficiency,efferr;
338	+	stringstream addcutplus;
339	+	addcutplus<<addcut<<"&&(process=="<<iprocess<<")";
340	+	MCefficiency(events,this_process_efficiency, efferr,mcjzb,requireZ,Neventsinfile, addcutplus.str(),-1);
341	+	process_efficiencies.push_back(this_process_efficiency);
342	+	}
343	+	return process_efficiencies;
344	+	}
345	+
346	+
347		void JZBefficiency(TTree *events, string informalname, float &jzbeff, float &jzbefferr, bool requireZ, string addcut="") {
348		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;
349		if(addcut!="") kbase=kbase&&addcut.c_str();//this is mostly for SUSY scans (adding requirements on masses)
350		if(requireZ) kbase=kbase&&"TMath::Abs(genMID)==23";
351		TH1F* hLM4 = plotEff(events,kbase,informalname);
#	Line 291 | Line 389 | void JZBjetScale(TTree *events, float &j
389		if(!automatized) dout << "    JESup: " << effp << " (" << (effp-eff)/eff*100. << "%)" << std::endl;
390		if(!automatized) dout << "    central:  " << eff << std::endl;
391		if(!automatized) dout << "    JESdown: " << effm << " (" << (effm-eff)/eff*100. << "%)" << std::endl;
392	<	jesup=(effp-eff)/eff*100.;
393	<	jesdown=(effm-eff)/eff*100.;
392	>	jesup=(effp-eff)/eff;
393	>	jesdown=(effm-eff)/eff;
394		}
395
396		//________________________________________________________________________
#	Line 317 | Line 415 | void doJZBscale(TTree *events, float &do
415		if(!automatized) dout << "  efficiency at JZB==" << jzbSel*(1.+systematic)  << "(-"<<syst*100<<"%) : " << effp << " (" << ((effp-eff)/eff)*100. << "%)"  << std::endl;
416		if(!automatized) dout << "  efficiency at JZB==" << jzbSel  << ": " << eff << std::endl;
417		if(!automatized) dout << "  efficiency at JZB==" << jzbSel*(1.-systematic)  << "(-"<<syst*100<<"%) : " << effm << " (" << ((effm-eff)/eff)*100. << "%)"  << std::endl;
418	<	up=((effp-eff)/eff)*100;
419	<	down=((effm-eff)/eff)*100;
418	>	up=((effp-eff)/eff);
419	>	down=((effm-eff)/eff);
420		}
421
422		//________________________________________________________________________
#	Line 347 | Line 445 | void JZBresponse(TTree *events, bool req
445		}
446
447
448	<	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="") {
448	>	//________________________________________________________________________________________
449	>	// PDF uncertainty
450	>	float get_pdf_uncertainty(TTree *events, string mcjzb, bool requireZ, int Neventsinfile, int NPdfs, string addcut="") {
451	>	std::vector<float> efficiency;
452	>	for(int k = 1; k < NPdfs; k++) {
453	>	float result, resulterr;
454	>	MCefficiency(events, result, resulterr, mcjzb, requireZ, Neventsinfile, addcut, k);
455	>	efficiency.push_back(result);
456	>	}
457	>	float errHi, errLow,err;
458	>	master_formula(efficiency, errHi, errLow);
459	>	err=errLow;
460	>	if(errHi>errLow) err=errHi;
461	>	if(!automatized) dout << "  Uncertainty from PDF: " << errLow << " (low) and " << errHi << "(high) ---> Picked " << err << endl;
462	>	return err;
463	>
464	>	}
465	>
466	>	int get_npdfs(TTree *events) {
467	>	int NPDFs;
468	>	events->SetBranchAddress("NPdfs",&NPDFs);
469	>	events->GetEntry(1);
470	>	return NPDFs;
471	>	}
472
473	+
474	+	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) {
475		float JetEnergyScaleUncert=0.1;
476		float JZBScaleUncert=0.1;
477		mcjzbexpression=mcjzb;
478	<	float triggereff=4;//percent!
478	>	float triggereff=5.0/100;// in range [0,1]
479		dout << "Trigger efficiency not implemented in this script  yet, still using external one" << endl;
480	<	float leptonseleff=2;//percent!
480	>	float leptonseleff=2.0/100;// in range [0,1]
481		dout << "Lepton selection efficiency not implemented in this script  yet, still using external one" << endl;
482
483	+	int NPdfs=0;
484	+	if(ismSUGRA) NPdfs = get_npdfs(events);
485	+
486		float mceff,mcefferr,jzbeff,jzbefferr;
487		if(!automatized) dout << "MC efficiencies:" << endl;
488	<	MCefficiency(events,mceff,mcefferr,mcjzb,requireZ,Neventsinfile,addcut);
488	>	MCefficiency(events,mceff,mcefferr,mcjzb,requireZ,Neventsinfile,addcut,-1);
489		JZBefficiency(events,informalname,jzbeff,jzbefferr,requireZ,addcut);
490		if(!automatized) dout << "JZB efficiency: " << jzbeff << "+/-" << jzbefferr << endl;
491
#	Line 381 | Line 507 | void do_systematics_for_one_file(TTree *
507
508		if(!automatized) dout << "Pileup: " << std::endl;
509		float resolution=pileup(events,requireZ,informalname,addcut);
510	<
510	>
511	>	float PDFuncert=0;
512	>	if(ismSUGRA) PDFuncert = get_pdf_uncertainty(events, mcjzb, requireZ, Neventsinfile, NPdfs, addcut);
513	>
514		dout << "_______________________________________________" << endl;
515		dout << "                 SUMMARY FOR " << informalname << " with JZB>" << jzbSel << "  (all in %) ";
516		if(addcut!="") dout << "With additional cut: " << addcut;
517		dout << endl;
518	<	dout << "MC efficiency: " << 100*mceff << "+/-" << 100*mcefferr << endl;
519	<	dout << "Trigger efficiency: " << triggereff << endl;
520	<	dout << "Lepton Sel Eff: " << leptonseleff << endl;
521	<	dout << "Jet energy scale: " << jesup << " " << jesdown << endl;
522	<	dout << "JZB Scale Uncert: " << scaledown << " " << scaleup << endl;
523	<	dout << "Resolution : " << resolution << endl;
524	<	dout << "From peak : " << sysfrompeak << endl;
525	<	dout << "JZB efficiency: " << jzbeff << "+/-" << jzbefferr << " (not yet included below) " << endl;
526	<	dout << "JZB response  : " << resp << " +/-" << resperr << " (not yet included below) " << endl;
518	>	dout << "MC efficiency: " << mceff << "+/-" << mcefferr << endl; // in range [0,1]
519	>	dout << "Trigger efficiency: " << triggereff << endl; // in range [0,1]
520	>	dout << "Lepton Sel Eff: " << leptonseleff << endl; // in range [0,1]
521	>	dout << "Jet energy scale: " << jesup << " " << jesdown << endl; // in range [0,1]
522	>	dout << "JZB Scale Uncert: " << scaledown << " " << scaleup << endl; // in range [0,1]
523	>	dout << "Resolution : " << resolution << endl; // in range [0,1]
524	>	dout << "From peak : " << sysfrompeak << endl; // in range [0,1]
525	>	if(ismSUGRA) dout << "PDF uncertainty  : " << PDFuncert << endl; // in range [0,1]
526	>	dout << "JZB efficiency: " << jzbeff << "+/-" << jzbefferr << " (not yet included below) " << endl; // in range [0,1]
527	>	dout << "JZB response  : " << resp << " +/-" << resperr << " (not yet included below) " << endl; // in range [0,1]
528
529		float toterr=0;
530	<	toterr+=(triggereff/100)*(triggereff/100);
531	<	toterr+=(leptonseleff/100)*(leptonseleff/100);
532	<	if(fabs(jesup)>fabs(jesdown)) toterr+=(jesup/100)*(jesup/100); else toterr+=(jesdown/100)*(jesdown/100);
533	<	if(fabs(scaleup)>fabs(scaledown)) toterr+=(scaleup/100)*(scaleup/100); else toterr+=(scaledown/100)*(scaledown/100);
534	<	toterr+=(resolution/100)*(resolution/100);
535	<	toterr+=(sysfrompeak/100)*(sysfrompeak/100);
536	<	toterr=TMath::Sqrt(toterr);
537	<	dout << "FINAL RESULT : " << 100*mceff << " +/- "<< 100*mcefferr << " (stat) +/- " << 100*toterr << " (syst)   %" << endl;
538	<	dout << "     we thus use the sqrt of the sum of the squares which is : " << 100*TMath::Sqrt(mcefferr*mcefferr+(toterr*toterr)) << endl;
530	>	toterr+=(triggereff)*(triggereff);
531	>	toterr+=(leptonseleff)*(leptonseleff);
532	>	if(fabs(jesup)>fabs(jesdown)) toterr+=(jesup*jesup); else toterr+=(jesdown*jesdown);
533	>	if(fabs(scaleup)>fabs(scaledown)) toterr+=(scaleup*scaleup); else toterr+=(scaledown*scaledown);
534	>	toterr+=(resolution*resolution);
535	>	toterr+=(sysfrompeak*sysfrompeak);
536	>	if(ismSUGRA) toterr+=(PDFuncert*PDFuncert);
537	>	dout << "TOTAL SYSTEMATICS: " << TMath::Sqrt(toterr) << " --> " << TMath::Sqrt(toterr)*mceff << endl;
538	>	float systerr=TMath::Sqrt(toterr)*mceff;
539	>	toterr=TMath::Sqrt(toterr*mceff*mceff+mcefferr*mcefferr);//also includes stat err!
540	>
541	>	dout << "FINAL RESULT : " << 100*mceff << " +/- "<< 100*mcefferr << " (stat) +/- " << 100*systerr << " (syst)   %" << endl;
542	>	dout << "     we thus use the sqrt of the sum of the squares of the stat & syst err, which is : " << 100*toterr << endl;
543	>
544	>	//Do not modify the lines below or mess with the order; this order is expected by all limit calculating functions!
545		vector<float> res;
546		res.push_back(jzbSel);
547		res.push_back(mceff);
548		res.push_back(mcefferr);
549		res.push_back(toterr);
550		res.push_back(TMath::Sqrt((mcefferr)*(mcefferr)+(toterr*toterr)));
551	<	if(fabs(jesup)>fabs(jesdown)) res.push_back(fabs(jesup/100)); else res.push_back(fabs(jesdown)/100);
552	<	if(fabs(scaleup)>fabs(scaledown)) res.push_back(fabs(scaleup)/100); else res.push_back(fabs(scaledown)/100);
553	<	res.push_back(fabs(resolution)/100);
551	>	if(fabs(jesup)>fabs(jesdown)) res.push_back(fabs(jesup)); else res.push_back(fabs(jesdown));
552	>	if(fabs(scaleup)>fabs(scaledown)) res.push_back(fabs(scaleup)); else res.push_back(fabs(scaledown));
553	>	res.push_back(fabs(resolution));
554	>	if(ismSUGRA) res.push_back(PDFuncert);
555		results.push_back(res);
556		}
557

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