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: Sun Jan 12 23:41:50 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger536897
======================================================================
Trigger: 00536897 Segment: 000
BAT Trigger Time: 373093481.728 [s; MET]
Trigger Stop: 373093482.24 [s; MET]
UTC: 2012-10-28T05:04:31.919360 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 271.923328992952 Dec: -2.28481991403425 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 9.54
Image Trigger?: NO
Rate S/N Ratio: 11.6619037896906 [ if not an image trigger ]
Image S/N Ratio: 9.54
Analysis Position: [ source = BAT ]
RA: 271.923328992952 Dec: -2.28481991403425 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 271.899089650914 Dec: -2.29304074005934 [deg; J2000]
{ 18h 07m 35.8s , -02d 17' 34.9" }
+/- 1.47936815826803 [arcmin] (estimated 90% radius based on SNR)
+/- 0.580447581467959 [arcmin] (formal 1-sigma fit error)
SNR: 17.3841029243506
Angular difference between the analysis and refined position is 1.534629 arcmin
Partial Coding Fraction: 0.5078125 [ including projection effects ]
Duration
T90: 2.87599992752075 +/- 0.370599538376878
Measured from: -0.595999956130981
to: 2.27999997138977 [s; relative to TRIGTIME]
T50: 1.59199994802475 +/- 0.164438435196983
Measured from: 0.208000004291534
to: 1.79999995231628 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.043999969959259
to: 0.956000030040741 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.807999968528748
to: 2.47600001096725 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.139243 0.226189 0.127427 0.038971
0.016668 0.017225 0.014653 0.011950 [error]
Peak 0.062187 0.102892 0.033617 0.014228
0.009671 0.009859 0.008167 0.006489 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 3.284 -0.808 2.476
T90 2.876 -0.596 2.280
T50 1.592 0.208 1.800
Peak 1.000 -0.044 0.956
====== 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 -1.707 -0.162 0.160 - - - 1.10e-02 -1.09e-03 1.08e-03 49.780 57
CPL -1.399 -0.442 0.728 91.829 N/A N/A 1.61e-02 N/A N/A 49.110 56
=== 1-s peak spectral analysis ===
(Best model with acceptable fit: N/A)
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 -1.902 -0.232 0.221 - - - 1.38e-02 -2.08e-03 2.04e-03 75.010 57
CPL -1.096 -1.382 2.125 46.204 -39.006 28.003 4.08e-02 -4.08e-02 7.60e-01 73.930 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 5.62e-08 9.10e-08 1.11e-07 2.69e-07 3.35e-07 5.28e-07 erg/cm2
90%_error_low -8.27e-09 -8.64e-09 -1.45e-08 -6.58e-08 -3.44e-08 -8.00e-08 erg/cm2
90%_error_hi 8.55e-09 8.61e-09 1.44e-08 7.85e-08 3.46e-08 8.95e-08 erg/cm2
Peak flux PL 8.34e-01 6.63e-01 3.55e-01 2.76e-01 1.98e+00 2.13e+00 ph/cm2/s
90%_error_low -1.58e-01 -8.66e-02 -6.85e-02 -9.08e-02 -2.60e-01 -2.77e-01 ph/cm2/s
90%_error_hi 1.64e-01 8.64e-02 6.86e-02 1.14e-01 2.60e-01 2.77e-01 ph/cm2/s
Fluence CPL 5.40e-08 9.45e-08 1.13e-07 1.64e-07 3.27e-07 4.25e-07 erg/cm2
90%_error_low -9.45e-09 -1.06e-08 -1.52e-08 -1.01e-07 -3.87e-08 -1.08e-07 erg/cm2
90%_error_hi 9.58e-09 1.15e-08 1.54e-08 1.69e-07 3.83e-08 1.37e-07 erg/cm2
Peak flux CPL 7.80e-01 7.33e-01 3.48e-01 9.49e-02 1.93e+00 1.96e+00 ph/cm2/s
90%_error_low -1.91e-01 -1.96e-01 -1.11e-01 -9.49e-02 -2.80e-01 -3.03e-01 ph/cm2/s
90%_error_hi 1.87e-01 1.58e-01 7.93e-02 2.15e-01 2.73e-01 3.61e-01 ph/cm2/s
======================================================================
Special notes of this burst