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: Mon Apr 6 14:07:38 EDT 2015
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger633237
======================================================================
Trigger: 00633237 Segment: 000
BAT Trigger Time: 446967769.92 [s; MET]
Trigger Stop: 446967775.424 [s; MET]
UTC: 2015-03-02T05:42:36.665740 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 175.508317651857 Dec: 36.8269551392691 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 6.58
Image Trigger?: NO
Rate S/N Ratio: 12.0415945787923 [ if not an image trigger ]
Image S/N Ratio: 6.58
Analysis Position: [ source = BAT ]
RA: 175.508317651857 Dec: 36.8269551392691 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 175.508 Dec: 36.827 [deg; J2000]
{ 11h 42m 01.9s , +36d 49' 37.2" }
+/- 2.58719266663 [arcmin] (estimated 90% radius based on SNR)
SNR: 7.82383728539
Angular difference between the analysis and refined position is 0.015491 arcmin
Partial Coding Fraction: 1.015625 [ including projection effects ]
Duration
T90: 23.8720000386238 +/- 8.72960939878939
Measured from: -0.312000036239624
to: 23.5600000023842 [s; relative to TRIGTIME]
T50: 8.7039999961853 +/- 5.52637311306892
Measured from: 3.20800000429153
to: 11.9120000004768 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 2.61199998855591
to: 3.61199998855591 [s; relative to TRIGTIME]
Total Fluence
Measured from: -1.14399999380112
to: 28.2319999933243 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.115092 0.206622 0.099345 0.063910
0.027687 0.029138 0.025836 0.024024 [error]
Peak 0.010252 0.022766 0.016347 0.004495
0.005252 0.005462 0.004973 0.004427 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 29.376 -1.144 28.232
T90 23.872 -0.312 23.560
T50 8.704 3.208 11.912
Peak 1.000 2.612 3.612
====== 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 -1.687 -0.336 0.316 - - - 9.45e-04 -2.01e-04 1.94e-04 60.890 57
CPL -0.934 -1.283 2.496 60.354 -42.190 -60.354 2.54e-03 -2.54e-03 7.67e-02 60.180 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 -1.333 -0.518 0.513 - - - 3.33e-03 -1.03e-03 1.02e-03 57.320 57
CPL -0.571 -1.214 2.472 95.587 -95.587 -95.587 8.00e-03 -8.00e-03 1.12e-01 56.760 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 4.22e-08 6.93e-08 8.61e-08 2.12e-07 2.57e-07 4.10e-07 erg/cm2
90%_error_low -1.09e-08 -1.24e-08 -2.42e-08 -9.97e-08 -5.63e-08 -1.28e-07 erg/cm2
90%_error_hi 1.14e-08 1.24e-08 2.46e-08 1.46e-07 5.84e-08 1.67e-07 erg/cm2
Peak flux PL 1.17e-01 1.30e-01 1.03e-01 1.35e-01 4.00e-01 4.85e-01 ph/cm2/s
90%_error_low -5.51e-02 -4.28e-02 -3.88e-02 -8.01e-02 -1.22e-01 -1.52e-01 ph/cm2/s
90%_error_hi 6.32e-02 4.18e-02 3.83e-02 1.29e-01 1.22e-01 1.59e-01 ph/cm2/s
Fluence CPL 3.95e-08 7.60e-08 8.39e-08 6.14e-08 2.35e-07 2.61e-07 erg/cm2
90%_error_low -1.27e-08 -9.04e-09 -3.50e-08 N/A -6.72e-08 -9.22e-08 erg/cm2
90%_error_hi 1.27e-08 2.05e-08 2.74e-08 N/A 7.13e-08 2.02e-07 erg/cm2
Peak flux CPL 1.02e-01 1.39e-01 1.10e-01 6.31e-02 3.90e-01 4.14e-01 ph/cm2/s
90%_error_low -6.44e-02 -4.81e-02 -4.39e-02 -6.31e-02 -1.23e-01 -1.42e-01 ph/cm2/s
90%_error_hi 7.12e-02 5.19e-02 4.64e-02 1.09e-01 1.24e-01 1.65e-01 ph/cm2/s
======================================================================
Special notes of this burst