void plotmaxadc(Int_t low=0,const int runnb = 1) {
  char name[100];
  Char_t iChan; // Channel number
  Char_t iChip; // Channel number
  UShort_t iClLength; //number of samples
  UInt_t iEventnb;
  Int_t iSamples[1024]; // Samples
  Int_t iMax = 0;
  TH1F* hSignal[16];
  TCanvas *c1 = new TCanvas("c1","Single cluster",600,600);
  sprintf(name, "readout-%i_0.root", runnb);
  TFile *inFile = new TFile(name);
  TTree *tree = (TTree*) inFile->Get("tree");
  c1->Divide(4,4);
  if(!tree) {
    cerr << "Tree SALTRO events was not found: " << name << "\n";
    return;
  }
  //  tree->Show(iEntry);
  tree->SetBranchAddress("iEventnb",&iEventnb);
  tree->SetBranchAddress("iSamples",&iSamples);
  tree->SetBranchAddress("iChan",&iChan);
  tree->SetBranchAddress("iChip",&iChip);
  tree->SetBranchAddress("iClLength",&iClLength);

  Int_t nentries = tree->GetEntries(); 
  printf("ENTRIES %d\n",nentries);
  for (Int_t j = 0; j < 16; j++) {
    sprintf(name, "hSignal_%d", j);
    hSignal[j] = ((TH1F *)(gROOT->FindObject(name)));
    if (hSignal[j]) delete hSignal[j];
    hSignal[j] = new TH1F(name, "",1024,-0.5,1023.5);
    hSignal[j]->SetMinimum(0);
    //    hSignal[j]->SetMaximum(1024);
  }
  gStyle->SetOptStat(1110);
  Int_t imax=0;

  for (Int_t j = 0; j < nentries; j++) {
    tree->GetEntry(j);
    imax = 0;
    for(Int_t l = 0; l < iClLength; l++) {
      if (iSamples[l] > imax) imax = iSamples[l];
    }
    if (imax > low) hSignal[iChan]->Fill(imax);
  }


  for (Int_t j = 0; j < 16; j++) {  
    c1->cd(j+1);
    sprintf(name, "Run %d chip %d Maxadc value ch %d", runnb,iChip,j);
    hSignal[j]->SetTitle(name);
    hSignal[j]->GetYaxis()->SetTitle("Entries");
    hSignal[j]->GetXaxis()->SetTitle("ADC value");
    hSignal[j]->Draw();
    printf("%d\t%5.2f\t%5.3f\t%5.1f\n",
	   j,hSignal[j]->GetMean(),hSignal[j]->GetRMS(),hSignal[j]->GetEntries());
  }
  sprintf(name,"chip%d-%d-maxadc.pdf",iChip,runnb);
  c1->SaveAs(name);
}