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 Mar 17 22:56:43 EDT 2019
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger882747
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Trigger: 00882747 Segment: 000
BAT Trigger Time: 568703584 [s; MET]
Trigger Stop: 568703680 [s; MET]
UTC: 2019-01-09T05:12:41.780680 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 33.2181437048103 Dec: 38.1099859036362 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 19.78
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 19.78
Analysis Position: [ source = BAT ]
RA: 33.2181437048103 Dec: 38.1099859036362 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 33.2143907597294 Dec: 38.1112460329202 [deg; J2000]
{ 02h 12m 51.5s , +38d 06' 40.5" }
+/- 1.02805090206141 [arcmin] (estimated 90% radius based on SNR)
+/- 0.373776012119829 [arcmin] (formal 1-sigma fit error)
SNR: 29.2384697514341
Angular difference between the analysis and refined position is 0.192632 arcmin
Partial Coding Fraction: 0.2851562 [ including projection effects ]
Duration
T90: 115.007999897003 +/- 33.8917526652539
Measured from: 12.2560000419617
to: 127.263999938965 [s; relative to TRIGTIME]
T50: 45.3880000114441 +/- 3.69487054579114
Measured from: 31.4839999675751
to: 76.8719999790192 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 38.8279999494553
to: 39.8279999494553 [s; relative to TRIGTIME]
Total Fluence
Measured from: 5.86800003051758
to: 206.679999947548 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 3.162105 4.612923 2.367926 0.352234
0.145105 0.151791 0.129867 0.109244 [error]
Peak 0.074511 0.072266 0.076282 0.003877
0.013786 0.015314 0.012665 0.009429 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 200.812 5.868 206.680
T90 115.008 12.256 127.264
T50 45.388 31.484 76.872
Peak 1.000 38.828 39.828
====== 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: CPL)
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 -1.864 -0.079 0.078 - - - 3.33e-03 -1.61e-04 1.60e-04 88.840 57
CPL -0.329 -0.451 0.502 49.501 -3.452 4.370 2.19e-02 -9.27e-03 1.87e-02 46.110 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 -1.668 -0.317 0.299 - - - 1.42e-02 -2.86e-03 2.80e-03 65.630 57
CPL -0.913 -1.290 1.572 72.650 -46.554 -72.650 3.44e-02 -3.44e-02 1.66e-01 64.500 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 1.20e-06 1.77e-06 1.95e-06 4.03e-06 6.16e-06 8.95e-06 erg/cm2
90%_error_low -8.33e-08 -7.88e-08 -1.25e-07 -5.08e-07 -2.96e-07 -6.30e-07 erg/cm2
90%_error_hi 8.48e-08 7.88e-08 1.26e-07 5.54e-07 2.98e-07 6.64e-07 erg/cm2
Peak flux PL 6.85e-01 6.25e-01 3.93e-01 3.78e-01 1.86e+00 2.08e+00 ph/cm2/s
90%_error_low -1.91e-01 -1.20e-01 -9.90e-02 -1.58e-01 -3.52e-01 -3.91e-01 ph/cm2/s
90%_error_hi 2.04e-01 1.19e-01 9.73e-02 2.07e-01 3.52e-01 3.93e-01 ph/cm2/s
Fluence CPL 9.64e-07 2.04e-06 1.93e-06 6.74e-07 5.45e-06 5.61e-06 erg/cm2
90%_error_low -1.02e-07 -1.08e-07 -1.57e-07 -2.46e-07 -3.31e-07 -4.05e-07 erg/cm2
90%_error_hi 1.04e-07 1.10e-07 1.53e-07 3.70e-07 3.39e-07 4.83e-07 erg/cm2
Peak flux CPL 6.04e-01 6.77e-01 4.26e-01 1.88e-01 1.83e+00 1.89e+00 ph/cm2/s
90%_error_low -2.39e-01 -1.45e-01 -1.14e-01 -1.88e-01 -3.60e-01 -3.97e-01 ph/cm2/s
90%_error_hi 2.41e-01 1.54e-01 1.21e-01 2.62e-01 3.58e-01 4.75e-01 ph/cm2/s
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