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
Process Script Ver: batgrbproduct v2.46
Process Start Time: Mon Apr 13 01:29:23 EDT 2015
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/ground_detect_bursts/scripts
======================================================================
Trigger: 00417974 Segment: 000
BAT Trigger Time: 291798457.0
UTC: 2010-04-01T07:07:31.334 [includes UTCF correction]
Where From?: Ground analysis (best_duration.txt)
NOTE: BAT trigger time for ground-detected burst is the T100 start time.
Analysis Position: [ source = GCN ]
RA: 290.813 Dec: -8.257 [deg; J2000]
Refined Position: [ source = BAT pre-slew image ]
RA: 290.813 Dec: -8.257 [deg; J2000]
{ 19h 23m 15.1s , -8d -15' -25.2" }
+/- 2.52809969276 [arcmin] (estimated 90% radius based on SNR)
SNR: 8.08639436996
Angular difference between the analysis and refined position is 0.000000 arcmin
Partial Coding Fraction: 0.07617188 [ including projection effects ]
Duration
T90: 2. +/- 2.23606797749979
Measured from: 0
to: 2 [s; relative to TRIGTIME]
T50: 2. +/- 1.
Measured from: 0
to: 2 [s; relative to TRIGTIME]
====== Table of the duration information =============================
Value tstart tstop
T100 3.000 0.000 3.000
T90 2.000 0.000 2.000
T50 2.000 0.000 2.000
Peak 1.000 1.000 2.000
====== 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 -1.880 -0.359 0.325 - - - 1.40e-02 -3.22e-03 3.09e-03 50.900 57
CPL -1.213 -1.120 1.902 51.683 N/A N/A 3.31e-02 N/A N/A 50.230 56
=== 1-s peak 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 -1.857 -0.440 0.394 - - - 1.75e-02 -5.31e-03 5.13e-03 51.050 57
CPL -0.115 -1.830 3.077 46.260 -12.776 -46.260 1.74e-01 -1.74e-01 1.15e+01 48.480 56
=== 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 7.67e-08 1.12e-07 1.22e-07 2.47e-07 3.86e-07 5.58e-07 erg/cm2
90%_error_low -1.98e-08 -2.07e-08 -3.68e-08 -1.23e-07 -8.52e-08 -1.69e-07 erg/cm2
90%_error_hi 2.07e-08 2.07e-08 3.75e-08 1.81e-07 8.78e-08 2.14e-07 erg/cm2
Peak flux PL 1.01e+00 8.27e-01 4.56e-01 3.70e-01 2.46e+00 2.67e+00 ph/cm2/s
90%_error_low -3.41e-01 -2.11e-01 -1.70e-01 -2.07e-01 -6.28e-01 -6.89e-01 ph/cm2/s
90%_error_hi 3.60e-01 2.11e-01 1.73e-01 3.09e-01 6.28e-01 6.94e-01 ph/cm2/s
Fluence CPL N/A N/A N/A N/A N/A N/A erg/cm2
90%_error_low -1.98e-08 -2.07e-08 -3.68e-08 -1.23e-07 -8.52e-08 -1.69e-07 erg/cm2
90%_error_hi 2.07e-08 2.07e-08 3.75e-08 1.81e-07 8.78e-08 2.14e-07 erg/cm2
Peak flux CPL 8.62e-01 1.02e+00 4.68e-01 6.53e-02 2.41e+00 2.42e+00 ph/cm2/s
90%_error_low -3.96e-01 -2.98e-01 N/A -6.53e-02 -6.26e-01 -6.33e-01 ph/cm2/s
90%_error_hi 4.06e-01 3.25e-01 N/A 3.68e-01 6.29e-01 6.48e-01 ph/cm2/s
======================================================================
Special notes of this burst