Validation for P8

Looking at the plots, the main thing I noticed is that the quantity CALRMSTRANS seems to be different in most tests, AG, Muons, Bkg.
I dowloaded the merit files for the allGamma, and compared the merit variable called Cal1TransRms... and they are identical, see plot attached.
I am a bit curious, where does the CALRMSTRANS variable of the systests come from ?
Is that the trans rms of each cluster (not just the first one) before
normalization by the energy, as the units suggests ?
...and why would it be different ?

For other variables in the BackGndMixDC2, the differences seem really small to me, small enough to be ignored... unless someone is willing to dig into the code obviously.

Cheers,
Johan

the CALRMSTRANS variable in the systests comes from the recon ROOT files, it is contains the value of getRmsTrans() for every CalCluster, see line 82 in CalCluster.h: http://www-glast.stanford.edu/cgi-bin/viewcvs/reconRootData/reconRootData/CalCluster.h?annotate=1.32
and this snippet from ReconCalFragment.cxx, one of the systest ROOT macros:

TObjArray clusterCol = cRH->getCalClusterCol();
int nCalClus = clusterCol->GetEntries();
((TH1F*)GetObjectPtr("CALCLUSCOUNT"))->Fill((Float_t)nCalClus);
for (int rc=0; rc < nCalClus; rc++) {       CalCluster* c=(CalCluster*)clusterCol->At(rc);
 ((TH1F*)GetObjectPtr("CALRECESUM"))->Fill(c->getEnergySum());
 ((TH1F*)GetObjectPtr("CALRECELEAK"))->Fill(c->getEnergyLeak());
 ((TH1F*)GetObjectPtr("CALRECECORR"))->Fill(c->getEnergyCorrected());
 ((TH1F*)GetObjectPtr("CALRECEFIT"))->Fill(c->getFitEnergy());
 ((TH1F*)GetObjectPtr("CALRMSTRANS"))->Fill(c->getRmsTrans());
 blah blah     }