void draw_qa(){
	TFile *file = new TFile("reco.richqa.root");
	TDirectory *current = gDirectory;
	current->cd("RichRingQaHist");
	//rich->cd();
  //gROOT->SetStyle("Plain");
 // gStyle->SetOptStat(0000);

	gStyle->SetPalette(1,0);
		
	gStyle->SetHistLineWidth(3);
	gROOT->ForceStyle();
	//gStyle->SetOptStat(0);
	//gStyle->SetOptFit(1);
	
	TCanvas *c1 = new TCanvas("CbmRichQa1","c1",1200,1000);
	c1->Divide(3,3);
	c1->cd(1);
	fh_FakeNofHits->SetLineColor(kRed);
	fh_TrueElNofHits->Draw();	
	fh_FakeNofHits->Draw("SAME");
	
	c1->cd(2);
	fh_FakeDistance->SetLineColor(kRed);
	fh_TrueElDistance->Draw();	
	fh_FakeDistance->Draw("SAME");
	
	c1->cd(3);	
	fh_FakeAngle->SetLineColor(kRed);
	fh_TrueElAngle->Draw();	
	fh_FakeAngle->Draw("SAME");
	
	c1->cd(4);
	fh_FakeNofHitsOnRing->SetLineColor(kRed);
	fh_TrueElNofHitsOnRing->Draw();
	fh_FakeNofHitsOnRing->Draw("SAME");
	
	c1->cd(5);	
	fh_FakeRadPos->SetLineColor(kRed);
	fh_TrueElRadPos->Draw();	
	fh_FakeRadPos->Draw("SAME");
	
	c1->cd(6);	
	fh_FakeChi2->SetLineColor(kRed);
	fh_TrueElChi2->Draw();	
	fh_FakeChi2->Draw("SAME");

	c1->cd(7);	
	fh_FakeRadius->SetLineColor(kRed);
	fh_TrueElRadius->Draw();	
	fh_FakeRadius->Draw("SAME");
		
	TCanvas *c2 = new TCanvas("CbmRichQa2","c2",1200,1000);
	fh_TrueFoundElRingsProjHitCutMom->Sumw2();
	fh_MCElRingsProjHitCutMom->Sumw2();	
	TH1D* th1 = new TH1D("th1","Efficiency electrons vs momentum",40,0,10);
	th1->GetXaxis()->SetTitle("momentum, GeV");	
	th1->GetYaxis()->SetTitle("efficiency");	
	th1->Divide(fh_TrueFoundElRingsProjHitCutMom,fh_MCElRingsProjHitCutMom,100);
	th1->Draw();
	
	
	TCanvas *c3 = new TCanvas("CbmRichQa3","c3",1200,1000);
	fh_TrueFoundElRingsProjHitCutRadPos->Sumw2();
	fh_MCElRingsProjHitCutRadPos->Sumw2();
	TH1D* th2 = new TH1D("th1","Efficiency electrons vs RadialPosition",40,0,150);
	th2->GetXaxis()->SetTitle("radial position, cm");
	th2->GetYaxis()->SetTitle("efficiency");
	th2->Divide(fh_TrueFoundElRingsProjHitCutRadPos,fh_MCElRingsProjHitCutRadPos,100);
	th2->Draw();	
}