Analysis Summary
Notes:
- 1) No attempt has been made to eliminate the non-significant decimal places.
- 2) This batgrbproduct analysis is done using the HEASARC data.
- 3) This batgrbproduct analysis is using the flight position for the mask-weighting calculation.
==========================================================================
BAT GROUND-DETECTED GRB DATA PROCESSING REPORT
(This burst occurred during telescope slew)
Process Script Ver: batgrbproduct v2.46
Process Start Time: Tue Nov 11 10:27:46 EST 2014
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/GRB081203B
======================================================================
Trigger: 00336489 Segment: 000
BAT Trigger Time: 250005073.6
UTC: 2008-12-03T13:51:10.295 [includes UTCF correction]
Where From?: Ground analysis (best_duration.txt)
NOTE: BAT trigger time for ground-detected burst during slew is the T100 start time.
Refined Position: [ source = BAT mosaic image ]
RA: 228.777643512081 Dec: 44.4213141022708 [deg; J2000]
{ 15h 15m 06.6s , +44d 25' 16.7" }
+/- 2.19924039821 [arcmin] (estimated 90% radius based on SNR)
SNR: 9.86766032176
Angular difference between the analysis and refined position is Usage: arcmin
Partial Coding Fraction: Unavailable because the burst occurred during slew.
Duration
T90: 161.600000023842 +/- 1.6
Measured from: 8
to: 169.6 [s; relative to TRIGTIME]
T50: 88.0000000298023 +/- 1.6
Measured from: 41.6
to: 129.6 [s; relative to TRIGTIME]
====== Table of the duration information =============================
Value tstart tstop
T100 177.600 0.000 177.600
T90 161.600 8.000 169.600
T50 88.000 41.600 129.600
Peak 1.000 32.300 33.300
====== Spectral Analysis Summary =====================================
Model : spectral model: simple power-law (PL) and cutoff power-law (CPL)
Ph_index : photon index: E^{Ph_index}
Ph_90err : 90% error of the photon index
Epeak : Epeak in keV
Epeak_90err: 90% error of Epeak
Norm : normalization at 50 keV in both the PL model and CPL model
Nomr_90err : 90% error of the normalization
chi2 : Chi-Squared
dof : degree of freedo
=== Time-averaged spectral analysis ===
(Best model with acceptable fit: PL)
Model Ph_index Ph_90err_low Ph_90err_hi Epeak Epeak_90err_low Epeak_90err_hi Norm Nomr_90err_low Norm_90err_hi chi2 dof
PL -1.690 -0.139 0.136 - - - 2.65e-03 -1.91e-04 1.89e-04 51.690 57
CPL -1.687 -0.142 0.135 9999.360 -9999.350 -9999.360 2.66e-03 -2.30e-03 -1.24e-03 51.730 56
=== 1-s peak spectral analysis ===
(Best model with acceptable fit: N/A)
Model Ph_index Ph_90err_low Ph_90err_hi Epeak Epeak_90err_low Epeak_90err_hi Norm Nomr_90err_low Norm_90err_hi chi2 dof
PL N/A N/A N/A - - - N/A N/A N/A N/A N/A
CPL N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
=== Fluence/Peak Flux Summary ===
Model Band1 Band2 Band3 Band4 Band5 Total
15-25 25-50 50-100 100-350 15-150 15-350 keV
Fluence PL 4.58e-07 7.50e-07 9.30e-07 2.28e-06 2.78e-06 4.42e-06 erg/cm2
90%_error_low -5.72e-08 -5.45e-08 -9.18e-08 -4.63e-07 -2.10e-07 -5.33e-07 erg/cm2
90%_error_hi 5.96e-08 5.42e-08 9.07e-08 5.37e-07 2.11e-07 5.89e-07 erg/cm2
Peak flux PL N/A N/A N/A N/A N/A N/A ph/cm2/s
Special notes of this burst