int quit=0;
void handler(int){quit=1;}

void scan_offset(){
   signal(SIGINT,handler);
    for(int i=0; i<=23; i++) {
        TFile *f = new TFile(Form("results_run12_noflip_anodeoffset%d.root",i));
        //TH2F *h2 = (TH2F*)(f->Get("phicut/pczguess_vs_pc_int"));
        TH2F *h2 = (TH2F*)(f->Get("pcz_vs_sx3z"));
//        TH2F *h2 = (TH2F*)(f->Get("hPCQQQ/PC_XY_Projection_QQQ2"));
        if(!h2) continue;
        h2->SetTitle(Form("case%d",i));
        h2->Draw("colz");
        gPad->Modified();
        gPad->Update();
        while(gPad->WaitPrimitive());

        f->Close();
        if(i==23) i=0;
        if(quit) break;
    }
}