// print out info for how many entries we had in the various histograms

void scan(const char *infile = "onlmon_clock.root")
{
  cout << " infile " << infile << endl;
  TFile *f = TFile::Open(infile);

  TH1* h1[5];
  char histname[128];

  for(int arm=0;arm<2; arm++){

    for(int iorient=0;iorient<2;iorient++){
      for(int ipanel=0;ipanel<6;ipanel++){
	for(int igap=0;igap<5;igap++) {

	  sprintf(histname,"MUI_twopack%d%d%d%d",arm, igap, ipanel, iorient);
	  h1[igap]=(TH1*)gROOT->FindObject(histname);
	  
	  cout << " histname " << histname
	       << " Entries " << h1[igap]->GetEntries() << endl;

	}    
      }
    }

  }

}