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 11:22:59 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger251634
======================================================================
Trigger: 00251634 Segment: 000
BAT Trigger Time: 188019609.856 [s; MET]
Trigger Stop: 188019610.112 [s; MET]
UTC: 2006-12-17T03:40:08.217280 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 160.441664347489 Dec: -21.1182033163857 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 8.27
Image Trigger?: NO
Rate S/N Ratio: 21.6333076527839 [ if not an image trigger ]
Image S/N Ratio: 8.27
Analysis Position: [ source = BAT ]
RA: 160.441664347489 Dec: -21.1182033163857 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 160.401772484407 Dec: -21.1472640052747 [deg; J2000]
{ 10h 41m 36.4s , -21d 08' 50.2" }
+/- 2.27439398045063 [arcmin] (estimated 90% radius based on SNR)
+/- 1.07858092435411 [arcmin] (formal 1-sigma fit error)
SNR: 9.40394847777584
Angular difference between the analysis and refined position is 2.832760 arcmin
Partial Coding Fraction: 0.8515625 [ including projection effects ]
Duration
T90: 0.224000006914139 +/- 0.0432666368624544
Measured from: 0.0480000078678131
to: 0.272000014781952 [s; relative to TRIGTIME]
T50: 0.104000002145767 +/- 0.0432665955340684
Measured from: 0.111999988555908
to: 0.215999990701675 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.342000007629395
to: 0.657999992370605 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0.0279999971389771
to: 0.283999979496002 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.006580 0.015815 0.022916 0.011837
0.002696 0.003020 0.003106 0.002448 [error]
Peak 0.007362 0.032125 0.023781 0.009740
0.004981 0.005295 0.004949 0.004041 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 0.256 0.028 0.284
T90 0.224 0.048 0.272
T50 0.104 0.112 0.216
Peak 1.000 -0.342 0.658
====== 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 -0.663 -0.305 0.336 - - - 1.34e-02 -2.47e-03 2.38e-03 52.270 57
CPL -0.585 -0.385 0.905 998.440 -998.440 -998.440 1.46e-02 -3.57e-03 -1.46e-02 52.430 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 -1.089 -0.351 0.369 - - - 4.62e-03 -1.00e-03 1.00e-03 73.420 57
CPL -0.266 -0.998 1.907 109.846 N/A N/A 1.17e-02 N/A N/A 72.410 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 2.02e-09 6.23e-09 1.57e-08 1.13e-07 4.27e-08 1.37e-07 erg/cm2
90%_error_low -7.49e-10 -1.49e-09 -2.67e-09 -4.06e-08 -7.46e-09 -4.20e-08 erg/cm2
90%_error_hi 8.66e-10 1.44e-09 2.64e-09 5.72e-08 7.49e-09 5.71e-08 erg/cm2
Peak flux PL 1.28e-01 1.65e-01 1.55e-01 2.57e-01 5.35e-01 7.06e-01 ph/cm2/s
90%_error_low -4.92e-02 -4.29e-02 -3.76e-02 -1.09e-01 -1.18e-01 -1.62e-01 ph/cm2/s
90%_error_hi 5.56e-02 4.19e-02 3.71e-02 1.51e-01 1.19e-01 1.70e-01 ph/cm2/s
Fluence CPL 2.02e-09 6.22e-09 1.53e-08 1.13e-07 4.30e-08 1.35e-07 erg/cm2
90%_error_low N/A -1.63e-09 N/A -7.43e-08 N/A -7.08e-08 erg/cm2
90%_error_hi N/A 1.59e-09 N/A 2.46e-08 N/A 2.51e-08 erg/cm2
Peak flux CPL 1.10e-01 1.78e-01 1.68e-01 1.12e-01 5.21e-01 5.67e-01 ph/cm2/s
90%_error_low -5.62e-02 -4.92e-02 -4.36e-02 -1.12e-01 -1.21e-01 -1.54e-01 ph/cm2/s
90%_error_hi 6.35e-02 5.23e-02 4.60e-02 2.01e-01 1.21e-01 2.36e-01 ph/cm2/s
======================================================================
Special notes of this burst