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: Sun Jul 31 21:16:34 EDT 2016
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger704155
======================================================================
Trigger: 00704155 Segment: 000
BAT Trigger Time: 490046032.576 [s; MET]
Trigger Stop: 490046033.6 [s; MET]
UTC: 2016-07-12T19:53:36.025560 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 304.149318030523 Dec: -26.9813085140697 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.67
Image Trigger?: NO
Rate S/N Ratio: 39.560080889705 [ if not an image trigger ]
Image S/N Ratio: 7.67
Analysis Position: [ source = BAT ]
RA: 304.149318030523 Dec: -26.9813085140697 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 304.164465787245 Dec: -26.9646060650258 [deg; J2000]
{ 20h 16m 39.5s , -26d 57' 52.6" }
+/- 1.31120927829803 [arcmin] (estimated 90% radius based on SNR)
+/- 0.578223719095616 [arcmin] (formal 1-sigma fit error)
SNR: 20.654538862418
Angular difference between the analysis and refined position is 1.288564 arcmin
Partial Coding Fraction: 0.2402344 [ including projection effects ]
Duration
T90: 44.527999997139 +/- 6.37316378425992
Measured from: -3.30399996042252
to: 41.2240000367165 [s; relative to TRIGTIME]
T50: 21.1200000047684 +/- 2.48082567258281
Measured from: 3.67200005054474
to: 24.7920000553131 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.0600000023841858
to: 1.06000000238419 [s; relative to TRIGTIME]
Total Fluence
Measured from: -8.59999996423721
to: 45.4640000462532 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.819694 1.252365 1.192259 0.502909
0.084043 0.088490 0.079544 0.066521 [error]
Peak 0.043115 0.089871 0.134019 0.063842
0.012824 0.014836 0.015719 0.013224 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 54.064 -8.600 45.464
T90 44.528 -3.304 41.224
T50 21.120 3.672 24.792
Peak 1.000 0.060 1.060
====== 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 -1.172 -0.127 0.129 - - - 4.72e-03 -3.29e-04 3.28e-04 62.960 57
CPL -1.121 -0.184 0.261 971.969 -971.969 -971.969 4.98e-03 -5.63e-04 1.24e-03 63.380 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 -0.766 -0.262 0.279 - - - 2.02e-02 -3.19e-03 3.12e-03 46.730 57
CPL -0.739 -0.285 1.162 9723.560 -9723.560 -9723.560 2.05e-02 -3.36e-03 2.78e-03 46.760 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 2.40e-07 5.39e-07 9.56e-07 3.99e-06 2.61e-06 5.72e-06 erg/cm2
90%_error_low -3.42e-08 -4.63e-08 -7.56e-08 -6.92e-07 -1.93e-07 -7.34e-07 erg/cm2
90%_error_hi 3.59e-08 4.56e-08 7.51e-08 7.92e-07 1.93e-07 8.17e-07 erg/cm2
Peak flux PL 4.13e-01 6.46e-01 7.60e-01 1.73e+00 2.32e+00 3.55e+00 ph/cm2/s
90%_error_low -1.32e-01 -1.35e-01 -1.14e-01 -5.19e-01 -3.51e-01 -5.87e-01 ph/cm2/s
90%_error_hi 1.50e-01 1.32e-01 1.13e-01 6.55e-01 3.52e-01 6.38e-01 ph/cm2/s
Fluence CPL 2.39e-07 5.36e-07 9.46e-07 4.01e-06 2.62e-06 5.44e-06 erg/cm2
90%_error_low N/A -4.34e-08 -9.41e-08 -1.37e-06 -2.69e-07 -1.09e-06 erg/cm2
90%_error_hi N/A 4.85e-08 1.15e-07 3.28e-07 2.56e-07 1.08e-06 erg/cm2
Peak flux CPL 4.11e-01 6.46e-01 7.61e-01 1.70e+00 2.32e+00 3.53e+00 ph/cm2/s
90%_error_low -1.82e-01 -1.35e-01 -1.15e-01 -9.90e-01 -3.58e-01 -1.09e+00 ph/cm2/s
90%_error_hi 1.03e-01 1.34e-01 1.10e-01 3.84e-01 3.53e-01 6.04e-01 ph/cm2/s
======================================================================
Special notes of this burst