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.
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BAT GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.46
Process Start Time: Wed Jan 22 16:04:14 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger211957
======================================================================
Trigger: 00211957 Segment: 000
BAT Trigger Time: 170353711.168 [s; MET]
Trigger Stop: 170353711.68 [s; MET]
UTC: 2006-05-26T16:28:29.950920 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 232.845565859311 Dec: 0.244218930890226 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 9.05
Image Trigger?: NO
Rate S/N Ratio: 20.3469899493758 [ if not an image trigger ]
Image S/N Ratio: 9.05
Analysis Position: [ source = BAT ]
RA: 232.845565859311 Dec: 0.244218930890226 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 232.833766596179 Dec: 0.295772893378037 [deg; J2000]
{ 15h 31m 20.1s , +00d 17' 44.8" }
+/- 1.40856022592367 [arcmin] (estimated 90% radius based on SNR)
+/- 0.642721206825804 [arcmin] (formal 1-sigma fit error)
SNR: 18.6458447751036
Angular difference between the analysis and refined position is 3.173218 arcmin
Partial Coding Fraction: 0.6171875 [ including projection effects ]
Duration
T90: 298.040000021458 +/- 22.8986889494558
Measured from: 0.355999976396561
to: 298.395999997854 [s; relative to TRIGTIME]
T50: 249.256000012159 +/- 8.11129977774405
Measured from: 7.52399998903275
to: 256.780000001192 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.143999993801117
to: 1.14399999380112 [s; relative to TRIGTIME]
Total Fluence
Measured from: -1.36000001430511
to: 310.17199999094 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.004617 0.783562 0.634497 0.179950
0.085851 0.083869 0.074418 0.067353 [error]
Peak 0.042449 0.078881 0.070239 0.019653
0.006582 0.007346 0.006651 0.005146 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 311.532 -1.360 310.172
T90 298.040 0.356 298.396
T50 249.256 7.524 256.780
Peak 1.000 0.144 1.144
====== 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 -1.961 -0.227 0.216 - - - 4.52e-04 -6.17e-05 5.93e-05 66.050 57
CPL -1.968 -1.019 -0.060 9999.310 -9832.547 -9662.366 4.51e-04 -3.54e-04 -6.76e-05 66.060 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 -1.300 -0.169 0.169 - - - 1.40e-02 -1.43e-03 1.43e-03 70.110 57
CPL -0.336 -0.758 0.928 89.792 -22.198 128.222 4.12e-02 -2.32e-02 7.23e-02 65.210 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 2.77e-07 3.85e-07 3.95e-07 7.42e-07 1.29e-06 1.80e-06 erg/cm2
90%_error_low -4.28e-08 -3.89e-08 -7.53e-08 -2.54e-07 -1.64e-07 -3.36e-07 erg/cm2
90%_error_hi 4.40e-08 3.88e-08 7.69e-08 3.35e-07 1.68e-07 4.00e-07 erg/cm2
Peak flux PL 4.75e-01 5.38e-01 4.37e-01 5.92e-01 1.67e+00 2.04e+00 ph/cm2/s
90%_error_low -8.34e-02 -6.11e-02 -5.35e-02 -1.36e-01 -1.73e-01 -2.17e-01 ph/cm2/s
90%_error_hi 8.79e-02 6.05e-02 5.30e-02 1.59e-01 1.73e-01 2.19e-01 ph/cm2/s
Fluence CPL 2.67e-07 3.59e-07 3.69e-07 8.34e-07 1.22e-06 1.82e-06 erg/cm2
90%_error_low -4.62e-08 -6.27e-08 -6.30e-08 -7.82e-07 -2.11e-07 -2.98e-07 erg/cm2
90%_error_hi 9.35e-08 5.50e-08 5.85e-08 3.23e-08 1.87e-07 2.79e-07 erg/cm2
Peak flux CPL 3.90e-01 5.82e-01 4.76e-01 2.42e-01 1.61e+00 1.69e+00 ph/cm2/s
90%_error_low -1.03e-01 -7.25e-02 -6.36e-02 -1.20e-01 -1.81e-01 -2.23e-01 ph/cm2/s
90%_error_hi 1.08e-01 7.49e-02 6.52e-02 2.39e-01 1.80e-01 2.82e-01 ph/cm2/s
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