void pedestalsrms(int mcm = 0,const char *title = "",const char *filename = "allped.txt") {
  char name[100];
  TGraph* gr = new TGraph(filename, "%lg %*lg %lg");
  TCanvas *c1 = new TCanvas("c1","Pedeastals",600,600);
  sprintf(name,"mcm%d pedestal RMS %s",mcm,title);
  gr->SetTitle(name);
  gr->GetXaxis()->SetTitle("Channel");
  gr->GetYaxis()->SetTitle("RMS");
  gr->GetXaxis()->SetLimits(-1.0,129.0);
  gr->GetHistogram()->SetMaximum(1.0);   // along          
  gr->GetHistogram()->SetMinimum(0.0);  //   Y  
  gr->SetMarkerStyle(21);
  gr->Draw("AP");
  sprintf(name,"mcm%d-pedestalrms-%s.pdf",mcm,title);
  c1->SaveAs(name);
}