Here are the clusters per event versus HV histograms. The data comes from Bernd's no beam and beam data tables. The HV settings are on the X axis, and the clusters per event are on the y axis. Disk 1 needs to be examined further, as the noise is significantly higher than the other disks. 

This is the code used to determine cluster parameters:

a2cMkr->setFgtDb(fgtDbMkr->getDbTables());

a2cMkr->setAbsThres(-5000);

a2cMkr->setRelThres(4.);

a2cMkr->doCutBadStatus();

a2cMkr->acceptLongPulses(true);

a2cMkr->setClusterThreshold(0.8);

Char_t *myMaker = "StFgtClusterMaker";

if(gClassTable->GetID(myMaker)<0) {

gSystem->Load(myMaker);

}

StFgtClusterMaker* myMk=new StFgtClusterMaker("FgtClustMaker");

seededClusAlgo = new StFgtSeededClusterAlgo();

seededClusAlgo->setJumpSingleStrip(true);

myMk->setClusterAlgo( seededClusAlgo );

cout <<"1" <<endl;

fgtAVEffMkr = newStFgtGenAVEMaker ( "avEffMkr");

fgtAVEffMkr->SetEffDisk(effDisk);