void CoinHist(){

  // set raw data file
  TArtEventStore *estore = new TArtEventStore();
  estore->Open("ridf/1205_dayone/sdaq02/dayone0090.ridf");// 22C+C tirg=DSB(1/1)
  
  // define histogram
  TH1* hcoin = new TH1I("hcoin", "COIN", 16,0.5,16.5);

  // calibration class
  TArtCalibCoin *calibcoin = new TArtCalibCoin();



  int neve = 0;
  while(estore->GetNextEvent() && neve<10000){

    calibcoin->LoadData();// use LoadData instead of ReconstructData

    for (int id=1;id<16;id++) 
      if (calibcoin->IsChTrue(id)) hcoin->Fill(id);
    /* 
       Definition for the SAMURAI dayone expeirment

       id = 1 : DS-BEAM
       id = 2 : BEAM x NEBULA
       id = 3 : BEAM x DALI
       id = 4 : BEAM x HOD
    */



    //    calibcoin->ClearData();// do nothing
    estore->ClearData();
    ++neve;
  }


}