From c8992f9f4b76e8626c2545d8c8e3ed78e0f64270 Mon Sep 17 00:00:00 2001 From: Ewan Dickson <35922612+grazwegian@users.noreply.github.com> Date: Tue, 17 Oct 2023 17:19:26 +0200 Subject: [PATCH] stx_livetime_fraction: update of default eta value using empirical high trigger rate data --- stix/idl/processing/livetime/stx_livetime_fraction.pro | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/stix/idl/processing/livetime/stx_livetime_fraction.pro b/stix/idl/processing/livetime/stx_livetime_fraction.pro index 8c8615a3..e1bab61e 100755 --- a/stix/idl/processing/livetime/stx_livetime_fraction.pro +++ b/stix/idl/processing/livetime/stx_livetime_fraction.pro @@ -130,6 +130,7 @@ ; 03-dec-2018, ECMD (Graz), change of calculation including eta and tau ; 03-mar-2022, ECMD (Graz), update of eta and tau values and definition tau is now only readout time ; 21-apr-2022, ECMD (Graz), added pileup correction parameter +; 17-oct-2023, ECMD (Graz), update of default eta value using empirical high trigger rate data ; ;- function stx_livetime_fraction, triggergram, det_select, tau_array = tau_array, eta_array=eta_array, error=error @@ -140,7 +141,7 @@ function stx_livetime_fraction, triggergram, det_select, tau_array = tau_array, ntrig = (size(/dimension, triggergram.triggerdata ))[0] default, tau_array, 10.1e-6 + fltarr(ntrig) ;10.1 microseconds readout time per event - default, eta_array, 2.63e-6 + fltarr(ntrig) ;2.63 microseconds latency time per event + default, eta_array, 1.10e-6 + fltarr(ntrig) ;1.1 microseconds latency time per event (best fit May 2023) beta = stx_pileup_corr_parameter() ; get estimate of pileup correction parameter