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 00:19:48 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger316910
======================================================================
Trigger: 00316910 Segment: 000
BAT Trigger Time: 237750779.584 [s; MET]
Trigger Stop: 237750780.608 [s; MET]
UTC: 2008-07-14T17:52:56.643300 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 188.109331293591 Dec: -60.2785024938338 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 17.38
Image Trigger?: NO
Rate S/N Ratio: 51.7783738639985 [ if not an image trigger ]
Image S/N Ratio: 17.38
Analysis Position: [ source = BAT ]
RA: 188.109331293591 Dec: -60.2785024938338 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 188.101375281327 Dec: -60.2747529368591 [deg; J2000]
{ 12h 32m 24.3s , -60d 16' 29.1" }
+/- 0.861461306246883 [arcmin] (estimated 90% radius based on SNR)
+/- 0.257156541387293 [arcmin] (formal 1-sigma fit error)
SNR: 37.6390541267428
Angular difference between the analysis and refined position is 0.326544 arcmin
Partial Coding Fraction: 0.4335938 [ including projection effects ]
Duration
T90: 25.8120000064373 +/- 5.11699909044548
Measured from: -2.53999999165535
to: 23.272000014782 [s; relative to TRIGTIME]
T50: 9.32400000095367 +/- 1.05152078842441
Measured from: 0.0360000133514404
to: 9.36000001430511 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.343999981880188
to: 0.656000018119812 [s; relative to TRIGTIME]
Total Fluence
Measured from: -3.81199997663498
to: 32.2120000123978 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.008821 1.405352 1.197496 0.282227
0.050018 0.052532 0.046722 0.039284 [error]
Peak 0.109304 0.170171 0.179631 0.072866
0.010167 0.011300 0.011174 0.008626 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 36.024 -3.812 32.212
T90 25.812 -2.540 23.272
T50 9.324 0.036 9.360
Peak 1.000 -0.344 0.656
====== 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 -1.440 -0.077 0.077 - - - 7.38e-03 -3.06e-04 3.06e-04 57.950 57
CPL -1.266 -0.211 0.314 229.158 -229.158 -229.158 8.90e-03 -1.73e-03 3.45e-03 56.960 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 -1.109 -0.115 0.116 - - - 3.60e-02 -2.36e-03 2.36e-03 54.710 57
CPL -1.038 -0.176 0.381 768.251 -768.251 -768.251 3.88e-02 -4.97e-03 1.80e-02 54.750 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 3.21e-07 6.12e-07 9.02e-07 2.85e-06 2.55e-06 4.69e-06 erg/cm2
90%_error_low -2.54e-08 -2.87e-08 -4.70e-08 -3.22e-07 -1.14e-07 -3.53e-07 erg/cm2
90%_error_hi 2.61e-08 2.85e-08 4.68e-08 3.50e-07 1.15e-07 3.75e-07 erg/cm2
Peak flux PL 1.02e+00 1.30e+00 1.20e+00 1.96e+00 4.18e+00 5.48e+00 ph/cm2/s
90%_error_low -1.32e-01 -1.04e-01 -8.88e-02 -2.95e-01 -2.82e-01 -3.84e-01 ph/cm2/s
90%_error_hi 1.38e-01 1.03e-01 8.81e-02 3.27e-01 2.82e-01 3.89e-01 ph/cm2/s
Fluence CPL 3.08e-07 6.19e-07 9.15e-07 2.24e-06 2.52e-06 4.08e-06 erg/cm2
90%_error_low -3.23e-08 -3.14e-08 -5.21e-08 -7.31e-07 -1.25e-07 -7.36e-07 erg/cm2
90%_error_hi 3.29e-08 3.18e-08 5.27e-08 8.60e-07 1.25e-07 7.36e-07 erg/cm2
Peak flux CPL 1.02e+00 1.30e+00 1.21e+00 1.91e+00 4.18e+00 5.46e+00 ph/cm2/s
90%_error_low -1.67e-01 -9.89e-02 -9.08e-02 -6.80e-01 -2.81e-01 -7.69e-01 ph/cm2/s
90%_error_hi 1.13e-01 1.11e-01 1.08e-01 2.93e-01 2.85e-01 3.77e-01 ph/cm2/s
======================================================================
Special notes of this burst