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.
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BAT GROUND-DETECTED GRB DATA PROCESSING REPORT
Process Script: hand-made scripts that follow steps in batgrbproduct
but without using TDRSS info
Process Start Time: Mon Sep 29 23:57:38 EDT 2014
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/ground_detect_bursts/scripts
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BAT Trigger Time: 390567049.6
UTC: 2013-05-18T10:50:39.031 [includes UTCF correction]
Where From?: Ground analysis (best_duration.txt)
NOTE: BAT trigger time for ground-detected burst is the T100 start time.
Refined Position: [ source = BAT mosaic image ]
RA: 321.545325342 Dec: -20.1460132374 [deg; J2000]
{ 21h 26m 10.9s , -20d -8' -45.6" }
+/- 1.81773090512 [arcmin] (estimated 90% radius based on SNR)
SNR: 12.9544398507
Angular difference between the analysis and refined position is Usage: arcmin
Partial Coding Fraction: 1.914062e-01 [ including projection effects ]
Duration
T90: 8. +/- 1.6
Measured from: 0
to: 8 [s; relative to TRIGTIME]
T50: 4.80000001192093 +/- 1.6
Measured from: 1.6
to: 6.4 [s; relative to TRIGTIME]
====== Table of the duration information =============================
Value tstart tstop
T100 8.000 0.000 8.000
T90 8.000 0.000 8.000
T50 4.800 1.600 6.400
Peak 1.000 0.300 1.300
====== 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 -1.458 -0.241 0.242 - - - 9.61e-03 -1.37e-03 1.37e-03 55.280 57
CPL -0.791 -0.829 1.229 96.624 -34.202 -96.624 2.00e-02 -1.13e-02 5.41e-02 53.930 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 -1.606 -0.451 0.417 - - - 1.11e-02 -3.59e-03 3.54e-03 71.030 57
CPL 1.849 -2.173 4.018 55.839 -12.251 16.330 5.93e-01 -5.93e-01 3.87e+01 62.500 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 7.64e-08 1.44e-07 2.10e-07 6.51e-07 5.95e-07 1.08e-06 erg/cm2
90%_error_low -1.89e-08 -2.29e-08 -3.64e-08 -2.13e-07 -8.99e-08 -2.44e-07 erg/cm2
90%_error_hi 2.03e-08 2.26e-08 3.59e-08 2.72e-07 9.04e-08 2.90e-07 erg/cm2
Peak flux PL 5.09e-01 4.79e-01 3.13e-01 3.16e-01 1.43e+00 1.62e+00 ph/cm2/s
90%_error_low -2.19e-01 -1.57e-01 -1.15e-01 -1.73e-01 -4.51e-01 -5.10e-01 ph/cm2/s
90%_error_hi 2.48e-01 1.57e-01 1.17e-01 2.51e-01 4.62e-01 5.10e-01 ph/cm2/s
Fluence CPL 6.67e-08 1.53e-07 2.23e-07 2.91e-07 5.75e-07 7.33e-07 erg/cm2
90%_error_low -2.31e-08 -2.65e-08 -4.15e-08 -1.91e-07 -9.63e-08 -2.15e-07 erg/cm2
90%_error_hi 2.45e-08 2.77e-08 4.30e-08 4.43e-07 9.55e-08 4.40e-07 erg/cm2
Peak flux CPL 2.68e-01 6.43e-01 4.16e-01 3.98e-02 1.35e+00 1.38e+00 ph/cm2/s
90%_error_low -2.68e-01 -2.19e-01 N/A -3.98e-02 -4.13e-01 -4.40e-01 ph/cm2/s
90%_error_hi 2.67e-01 2.20e-01 N/A 1.07e-01 4.59e-01 4.40e-01 ph/cm2/s
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Special notes of this burst