From d961dc34b47874806cf615a538923a45875c0cb9 Mon Sep 17 00:00:00 2001 From: knodlseder <> Date: Thu, 8 Mar 2012 14:15:36 +0000 Subject: [PATCH] Implement deadtime correction in ctobssim. --- ChangeLog | 3 ++- NEWS | 11 +++++++++-- 2 files changed, 11 insertions(+), 3 deletions(-) diff --git a/ChangeLog b/ChangeLog index e0d04c3..2baeece 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,10 +1,11 @@ -2012-02-28 Juergen Knoedlseder +2012-03-08 Juergen Knoedlseder * Version 0.4.0 released ======================== Add handling of observation definition XML files to ctselect, ctbin and ctlike + Add deadtime correction factor to ctobssim No longer query output parameters first Remove method parameter from ctlike and replace evfile and cntmap parameters by infile parameter diff --git a/NEWS b/NEWS index 0ff9fcf..d7e15ed 100644 --- a/NEWS +++ b/NEWS @@ -2,7 +2,7 @@ New Features and Important Changes in ctools 00-04-00 Author(s) : Juergen Knoedlseder -February 28, 2012 +March 8, 2012 1. Introduction @@ -32,7 +32,14 @@ statically linked to the ctools library. 4. ctobssim - CTA observation simulation ---------------------------------------- -None +Add deadc parameter to control the deadtime correction factor for the +observation. The deadtime correction factor deadc is the ratio between +livetime and ontime. A typical value of deadc=0.95 means 5% deadtime. + +An additional Monte Carlo process has been introduced for photons and +background events to select only those events that fall in the livetime +fraction of the exposure. This means that background rates are expected +in events per real time (and not events per livetime). 5. ctselect - CTA event selection -- libgit2 0.21.4