Changeset 3039 for trunk/MagicSoft/Mars/manalysis/MPedCalcPedRun.cc

Timestamp:

02/05/04 17:52:36 (21 years ago)

Author:

gaug

Message:

*** empty log message ***

File:

• trunk/MagicSoft/Mars/manalysis/MPedCalcPedRun.cc (modified) (2 diffs)

trunk/MagicSoft/Mars/manalysis/MPedCalcPedRun.cc

@@ -19 +19 @@
 !   Author(s): Thomas Bretz 05/2001 <mailto:tbretz@astro.uni-wuerzburg.de>
 !   Author(s): Sebastian Commichau 12/2003 
-!   Author(s): Javier Rico 01/2004 
+!   Author(s): Javier Rico 01/2004 <mailto:jrico@ifae.es>
+!   Author(s): Markus Gaug 01/2004 <mailto:markus@ifae.es>
 !
 !   Copyright: MAGIC Software Development, 2000-2004
@@ -287 +288 @@
       // The new version:
       //
-      const Float_t higainrms = TMath::Sqrt((sum2-sum*sum/nevts)/(nevts-1.)/(Float_t)fNumHiGainSamples);
-      
+      // 1. Calculate the Variance of the sums:
+      Float_t higainVar = (sum2-sum*sum/nevts)/(nevts-1.);
+      // 2. Scale the variance to the number of slices:
+      higainVar /= (Float_t)fNumHiGainSamples;
+      // 3. Calculate the RMS from the Variance:
+      const Float_t higainrms = TMath::Sqrt(higainVar);
+
       (*fPedestals)[pixid].Set(higainped, higainrms);