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 13:15:10 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger231231
======================================================================
Trigger: 00231231 Segment: 000
BAT Trigger Time: 180982123.328 [s; MET]
Trigger Stop: 180982124.352 [s; MET]
UTC: 2006-09-26T16:48:41.859180 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 263.955245477458 Dec: 13.0414075589345 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 11.6
Image Trigger?: NO
Rate S/N Ratio: 17.3205080756888 [ if not an image trigger ]
Image S/N Ratio: 11.6
Analysis Position: [ source = BAT ]
RA: 263.955245477458 Dec: 13.0414075589345 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 263.928934805326 Dec: 13.0422658835586 [deg; J2000]
{ 17h 35m 42.9s , +13d 02' 32.2" }
+/- 1.42696934880024 [arcmin] (estimated 90% radius based on SNR)
+/- 0.637909972148018 [arcmin] (formal 1-sigma fit error)
SNR: 18.3031580771225
Angular difference between the analysis and refined position is 1.538782 arcmin
Partial Coding Fraction: 0.9453125 [ including projection effects ]
Duration
T90: 8.824000030756 +/- 1.14368001356697
Measured from: 0.223999977111816
to: 9.04800000786781 [s; relative to TRIGTIME]
T50: 3.69200003147125 +/- 1.23596762645632
Measured from: 1.04799997806549
to: 4.74000000953674 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.368000000715256
to: 1.36800000071526 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.0920000076293945
to: 10.1399999856949 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.262661 0.203630 0.066149 0.027128
0.018580 0.017095 0.014054 0.011855 [error]
Peak 0.061602 0.052941 0.016219 0.005646
0.006173 0.005624 0.004578 0.003812 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 10.232 -0.092 10.140
T90 8.824 0.224 9.048
T50 3.692 1.048 4.740
Peak 1.000 0.368 1.368
====== 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 -2.497 -0.229 0.213 - - - 2.27e-03 -3.63e-04 3.60e-04 38.410 57
CPL -1.934 N/A N/A 4.207 N/A N/A 5.13e-03 N/A N/A 38.630 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 -2.380 -0.268 0.247 - - - 6.03e-03 -1.16e-03 1.15e-03 51.510 57
CPL -1.272 -0.725 1.817 22.587 N/A N/A 3.15e-02 N/A N/A 49.330 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 7.64e-08 7.70e-08 5.46e-08 6.15e-08 2.32e-07 2.70e-07 erg/cm2
90%_error_low -9.63e-09 -8.27e-09 -1.16e-08 -2.20e-08 -2.68e-08 -3.93e-08 erg/cm2
90%_error_hi 9.78e-09 8.13e-09 1.24e-08 2.96e-08 2.77e-08 4.47e-08 erg/cm2
Peak flux PL 5.82e-01 3.50e-01 1.35e-01 6.91e-02 1.10e+00 1.14e+00 ph/cm2/s
90%_error_low -9.27e-02 -4.61e-02 -3.29e-02 -2.69e-02 -1.36e-01 -1.41e-01 ph/cm2/s
90%_error_hi 9.45e-02 4.56e-02 3.49e-02 3.66e-02 1.36e-01 1.41e-01 ph/cm2/s
Fluence CPL N/A N/A N/A N/A N/A N/A erg/cm2
90%_error_low -9.63e-09 -8.27e-09 -1.16e-08 -2.20e-08 -2.68e-08 -3.93e-08 erg/cm2
90%_error_hi 9.78e-09 8.13e-09 1.24e-08 2.96e-08 2.77e-08 4.47e-08 erg/cm2
Peak flux CPL 5.58e-01 3.90e-01 1.10e-01 1.21e-02 1.07e+00 1.07e+00 ph/cm2/s
90%_error_low -1.01e-01 -6.30e-02 -5.20e-02 N/A -1.39e-01 -1.40e-01 ph/cm2/s
90%_error_hi 1.00e-01 6.63e-02 4.76e-02 N/A 1.41e-01 1.47e-01 ph/cm2/s
======================================================================
Special notes of this burst