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 20 01:01:27 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger315080
======================================================================
Trigger: 00315080 Segment: 000
BAT Trigger Time: 235909531.328 [s; MET]
Trigger Stop: 235909531.84 [s; MET]
UTC: 2008-06-23T10:25:28.440240 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 237.659837169095 Dec: -62.0380947683357 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.53
Image Trigger?: NO
Rate S/N Ratio: 12.0415945787923 [ if not an image trigger ]
Image S/N Ratio: 7.53
Analysis Position: [ source = BAT ]
RA: 237.659837169095 Dec: -62.0380947683357 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 237.668441406388 Dec: -62.0455425189205 [deg; J2000]
{ 15h 50m 40.4s , -62d 02' 44.0" }
+/- 1.38246549980321 [arcmin] (estimated 90% radius based on SNR)
+/- 0.654216412067809 [arcmin] (formal 1-sigma fit error)
SNR: 19.1506563344011
Angular difference between the analysis and refined position is 0.508202 arcmin
Partial Coding Fraction: 0.3320312 [ including projection effects ]
Duration
T90: 15.0959999859333 +/- 5.118077772016
Measured from: -0.159999996423721
to: 14.9359999895096 [s; relative to TRIGTIME]
T50: 6.26800003647804 +/- 0.972306533017859
Measured from: 1.35599997639656
to: 7.6240000128746 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 7.22799998521805
to: 8.22799998521805 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.672000020742416
to: 15.972000002861 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.380995 0.540481 0.502730 0.148680
0.039855 0.041942 0.038905 0.038140 [error]
Peak 0.049724 0.096819 0.075989 0.024772
0.010300 0.011602 0.010847 0.009322 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 16.644 -0.672 15.972
T90 15.096 -0.160 14.936
T50 6.268 1.356 7.624
Peak 1.000 7.228 8.228
====== 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 -1.271 -0.150 0.150 - - - 6.39e-03 -5.10e-04 5.10e-04 66.800 57
CPL -1.267 -0.151 0.152 9998.760 -9998.760 -9998.760 6.41e-03 -6.41e-03 4.38e-03 66.800 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 -1.286 -0.230 0.230 - - - 1.60e-02 -2.28e-03 2.27e-03 49.680 57
CPL -0.095 -1.079 1.495 80.221 -21.620 237.392 6.37e-02 -6.37e-02 2.86e-01 46.060 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 1.10e-07 2.32e-07 3.84e-07 1.44e-06 1.06e-06 2.17e-06 erg/cm2
90%_error_low -1.68e-08 -2.12e-08 -3.85e-08 -3.05e-07 -9.48e-08 -3.32e-07 erg/cm2
90%_error_hi 1.77e-08 2.10e-08 3.81e-08 3.60e-07 9.56e-08 3.78e-07 erg/cm2
Peak flux PL 5.38e-01 6.15e-01 5.04e-01 6.93e-01 1.91e+00 2.35e+00 ph/cm2/s
90%_error_low -1.27e-01 -9.54e-02 -8.58e-02 -2.12e-01 -2.71e-01 -3.46e-01 ph/cm2/s
90%_error_hi 1.35e-01 9.43e-02 8.49e-02 2.62e-01 2.72e-01 3.54e-01 ph/cm2/s
Fluence CPL 1.11e-07 2.31e-07 3.82e-07 1.47e-06 1.06e-06 2.16e-06 erg/cm2
90%_error_low -2.60e-08 -2.13e-08 -4.34e-08 -8.21e-07 -1.18e-07 -7.17e-07 erg/cm2
90%_error_hi 2.04e-08 2.31e-08 5.13e-08 3.83e-07 8.14e-08 1.89e-07 erg/cm2
Peak flux CPL 4.34e-01 6.85e-01 5.51e-01 2.26e-01 1.83e+00 1.90e+00 ph/cm2/s
90%_error_low -1.54e-01 -1.18e-01 -1.02e-01 N/A -2.85e-01 -3.28e-01 ph/cm2/s
90%_error_hi 1.63e-01 1.25e-01 1.04e-01 N/A 2.83e-01 4.39e-01 ph/cm2/s
======================================================================
Special notes of this burst