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 04:42:51 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger302728
======================================================================
Trigger: 00302728 Segment: 000
BAT Trigger Time: 224112624 [s; MET]
Trigger Stop: 224112688 [s; MET]
UTC: 2008-02-07T21:30:21.441560 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 207.513016835087 Dec: 7.5139985942329 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 15.83
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 15.83
Analysis Position: [ source = BAT ]
RA: 207.513016835087 Dec: 7.5139985942329 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 207.515129773953 Dec: 7.49224929255474 [deg; J2000]
{ 13h 50m 03.6s , +07d 29' 32.1" }
+/- 1.14950852327648 [arcmin] (estimated 90% radius based on SNR)
+/- 0.394970094257361 [arcmin] (formal 1-sigma fit error)
SNR: 24.9271361631863
Angular difference between the analysis and refined position is 1.310997 arcmin
Partial Coding Fraction: 1.015625 [ including projection effects ]
Duration
T90: 292.460000008345 +/- 7.98527645796442
Measured from: 30.7840000092983
to: 323.244000017643 [s; relative to TRIGTIME]
T50: 111.840000003576 +/- 19.6082656987265
Measured from: 77.0040000081062
to: 188.844000011683 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 330.33599999547
to: 331.33599999547 [s; relative to TRIGTIME]
Total Fluence
Measured from: 5.15999999642372
to: 332.891999989748 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 3.077512 4.053600 2.929785 0.617283
0.095627 0.099712 0.087707 0.074592 [error]
Peak 0.025363 0.047041 0.040416 0.022408
0.011917 0.012595 0.011467 0.008859 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 327.732 5.160 332.892
T90 292.460 30.784 323.244
T50 111.840 77.004 188.844
Peak 1.000 330.336 331.336
====== 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 -1.561 -0.058 0.058 - - - 2.08e-03 -6.40e-05 6.40e-05 63.510 57
CPL -1.246 -0.231 0.244 124.610 -32.923 180.415 2.94e-03 -6.46e-04 8.84e-04 57.990 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 -1.417 -0.481 0.486 - - - 8.99e-03 -2.53e-03 2.52e-03 42.660 57
CPL -0.989 -1.456 2.667 127.371 -127.371 -127.371 1.44e-02 -7.83e-03 2.32e-01 42.500 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 9.19e-07 1.63e-06 2.21e-06 6.17e-06 6.40e-06 1.09e-05 erg/cm2
90%_error_low -5.31e-08 -5.49e-08 -8.83e-08 -5.38e-07 -2.11e-07 -5.96e-07 erg/cm2
90%_error_hi 5.43e-08 5.48e-08 8.81e-08 5.73e-07 2.11e-07 6.24e-07 erg/cm2
Peak flux PL 3.42e-01 3.61e-01 2.71e-01 3.28e-01 1.10e+00 1.30e+00 ph/cm2/s
90%_error_low -1.62e-01 -1.19e-01 -8.91e-02 -1.77e-01 -3.26e-01 -3.66e-01 ph/cm2/s
90%_error_hi 1.90e-01 1.15e-01 8.64e-02 2.63e-01 3.29e-01 3.68e-01 ph/cm2/s
Fluence CPL 8.60e-07 1.66e-06 2.25e-06 3.96e-06 6.23e-06 8.73e-06 erg/cm2
90%_error_low -6.70e-08 -6.15e-08 -9.50e-08 -1.04e-06 -2.43e-07 -1.06e-06 erg/cm2
90%_error_hi 6.82e-08 6.20e-08 9.58e-08 1.49e-06 2.42e-07 1.50e-06 erg/cm2
Peak flux CPL 3.12e-01 3.75e-01 2.85e-01 2.17e-01 1.08e+00 1.19e+00 ph/cm2/s
90%_error_low -1.97e-01 -1.24e-01 -9.85e-02 -2.17e-01 -3.34e-01 -4.16e-01 ph/cm2/s
90%_error_hi 2.13e-01 1.39e-01 1.12e-01 1.81e-01 3.36e-01 4.57e-01 ph/cm2/s
======================================================================
Special notes of this burst