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 GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.46
Process Start Time: Mon Jan 13 07:02:03 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger512164
======================================================================
Trigger: 00512164 Segment: 000
BAT Trigger Time: 348831747.072 [s; MET]
Trigger Stop: 348831751.168 [s; MET]
UTC: 2012-01-21T09:42:19.266000 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 249.336314295725 Dec: -23.9543948122384 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 9.97
Image Trigger?: NO
Rate S/N Ratio: 8.94427190999916 [ if not an image trigger ]
Image S/N Ratio: 9.97
Analysis Position: [ source = BAT ]
RA: 249.336314295725 Dec: -23.9543948122384 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 249.363059302669 Dec: -23.9605202040783 [deg; J2000]
{ 16h 37m 27.1s , -23d 57' 37.9" }
+/- 1.38765494269346 [arcmin] (estimated 90% radius based on SNR)
+/- 0.427145077573602 [arcmin] (formal 1-sigma fit error)
SNR: 19.0484267830923
Angular difference between the analysis and refined position is 1.511804 arcmin
Partial Coding Fraction: 0.703125 [ including projection effects ]
Duration
T90: 26.7999999523163 +/- 3.41916774787436
Measured from: -9.62800002098083
to: 17.1719999313354 [s; relative to TRIGTIME]
T50: 11.4919999241829 +/- 2.61489955869669
Measured from: -2.77600002288818
to: 8.71599990129471 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 2.85999995470047
to: 3.85999995470047 [s; relative to TRIGTIME]
Total Fluence
Measured from: -11.0040000081062
to: 19.7759999632835 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.282813 0.564119 0.563091 0.149051
0.045146 0.042370 0.036429 0.030258 [error]
Peak 0.019009 0.032302 0.031983 0.009908
0.008107 0.007661 0.006576 0.005449 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 30.780 -11.004 19.776
T90 26.800 -9.628 17.172
T50 11.492 -2.776 8.716
Peak 1.000 2.860 3.860
====== 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: CPL)
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 -1.223 -0.131 0.134 - - - 3.60e-03 -2.76e-04 2.76e-04 59.150 57
CPL -0.365 -0.584 0.681 108.100 -24.864 103.261 8.66e-03 -3.82e-03 8.16e-03 52.470 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 -1.397 -0.409 0.415 - - - 6.02e-03 -1.48e-03 1.47e-03 40.100 57
CPL -0.029 -1.063 2.976 78.091 -23.618 -78.091 2.60e-02 -2.60e-02 4.74e-01 38.440 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 1.09e-07 2.38e-07 4.08e-07 1.61e-06 1.12e-06 2.37e-06 erg/cm2
90%_error_low -1.63e-08 -2.20e-08 -3.49e-08 -2.90e-07 -8.92e-08 -3.11e-07 erg/cm2
90%_error_hi 1.72e-08 2.18e-08 3.47e-08 3.32e-07 8.96e-08 3.46e-07 erg/cm2
Peak flux PL 2.24e-01 2.40e-01 1.82e-01 2.26e-01 7.33e-01 8.73e-01 ph/cm2/s
90%_error_low -9.25e-02 -6.82e-02 -5.19e-02 -1.08e-01 -1.88e-01 -2.14e-01 ph/cm2/s
90%_error_hi 1.07e-01 6.68e-02 5.10e-02 1.54e-01 1.90e-01 2.15e-01 ph/cm2/s
Fluence CPL 8.77e-08 2.49e-07 4.41e-07 6.30e-07 1.07e-06 1.41e-06 erg/cm2
90%_error_low -2.06e-08 -2.48e-08 -4.20e-08 -2.63e-07 -9.68e-08 -2.76e-07 erg/cm2
90%_error_hi 2.17e-08 2.51e-08 4.30e-08 5.21e-07 9.65e-08 5.17e-07 erg/cm2
Peak flux CPL 1.62e-01 2.59e-01 2.07e-01 8.00e-02 6.85e-01 7.08e-01 ph/cm2/s
90%_error_low -1.10e-01 -8.03e-02 -6.29e-02 -8.00e-02 -2.00e-01 -2.18e-01 ph/cm2/s
90%_error_hi 1.33e-01 8.19e-02 6.69e-02 2.01e-01 2.01e-01 2.93e-01 ph/cm2/s
======================================================================
Special notes of this burst