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: Wed Jan 22 20:13:51 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger155284
======================================================================
Trigger: 00155284 Segment: 000
BAT Trigger Time: 148512184 [s; MET]
Trigger Stop: 148512248 [s; MET]
UTC: 2005-09-15T21:23:04.269060 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 219.095807718615 Dec: -67.4048403823788 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 23.35
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 23.35
Analysis Position: [ source = BAT ]
RA: 219.095807718615 Dec: -67.4048403823788 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 219.120523734458 Dec: -67.4058125131395 [deg; J2000]
{ 14h 36m 28.9s , -67d 24' 20.9" }
+/- 0.761278136392281 [arcmin] (estimated 90% radius based on SNR)
+/- 0.273531630923196 [arcmin] (formal 1-sigma fit error)
SNR: 44.9099069674404
Angular difference between the analysis and refined position is 0.572745 arcmin
Partial Coding Fraction: 0.53125 [ including projection effects ]
Duration
T90: 43.0960000157356 +/- 4.40570765213235
Measured from: -4.2960000038147
to: 38.8000000119209 [s; relative to TRIGTIME]
T50: 21.3000000119209 +/- 1.19930647318383
Measured from: 2.40000000596046
to: 23.7000000178814 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -3.07600000500679
to: -2.07600000500679 [s; relative to TRIGTIME]
Total Fluence
Measured from: -9.1240000128746
to: 56.9160000085831 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 2.134346 2.491964 1.430887 0.247331
0.058932 0.060111 0.050218 0.040690 [error]
Peak 0.080557 0.103552 0.073325 0.018130
0.007934 0.008300 0.007200 0.005277 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 66.040 -9.124 56.916
T90 43.096 -4.296 38.800
T50 21.300 2.400 23.700
Peak 1.000 -3.076 -2.076
====== 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 -1.887 -0.062 0.062 - - - 5.86e-03 -1.98e-04 1.98e-04 73.620 57
CPL -1.374 -0.265 0.282 59.441 -7.268 14.634 1.06e-02 -2.76e-03 4.05e-03 62.110 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 -1.597 -0.155 0.152 - - - 1.78e-02 -1.63e-03 1.61e-03 44.920 57
CPL -1.353 -0.376 0.648 130.513 -63.866 -130.513 2.38e-02 -1.44e-02 2.67e-02 44.400 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 7.12e-07 1.03e-06 1.12e-06 2.26e-06 3.56e-06 5.12e-06 erg/cm2
90%_error_low -4.01e-08 -3.45e-08 -5.13e-08 -2.16e-07 -1.20e-07 -2.57e-07 erg/cm2
90%_error_hi 4.09e-08 3.44e-08 5.13e-08 2.31e-07 1.20e-07 2.68e-07 erg/cm2
Peak flux PL 8.06e-01 7.66e-01 5.06e-01 5.20e-01 2.29e+00 2.60e+00 ph/cm2/s
90%_error_low -1.15e-01 -6.96e-02 -5.91e-02 -1.14e-01 -2.02e-01 -2.26e-01 ph/cm2/s
90%_error_hi 1.20e-01 6.92e-02 5.86e-02 1.31e-01 2.02e-01 2.27e-01 ph/cm2/s
Fluence CPL 6.47e-07 1.08e-06 1.13e-06 1.11e-06 3.40e-06 3.97e-06 erg/cm2
90%_error_low -5.01e-08 -4.06e-08 -5.49e-08 -3.11e-07 -1.43e-07 -3.47e-07 erg/cm2
90%_error_hi 5.11e-08 4.10e-08 5.51e-08 4.57e-07 1.43e-07 4.79e-07 erg/cm2
Peak flux CPL 7.73e-01 7.84e-01 5.16e-01 3.88e-01 2.27e+00 2.46e+00 ph/cm2/s
90%_error_low -1.38e-01 -8.07e-02 -6.34e-02 -1.92e-01 -2.10e-01 -2.99e-01 ph/cm2/s
90%_error_hi 1.34e-01 8.41e-02 6.50e-02 1.70e-01 2.10e-01 3.35e-01 ph/cm2/s
======================================================================
Special notes of this burst