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 v2.47
Process Start Time: Mon May 18 14:53:22 EDT 2020
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger952791
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Trigger: 00952791 Segment: 000
BAT Trigger Time: 601829096 [s; MET]
Trigger Stop: 601829160 [s; MET]
UTC: 2020-01-27T14:44:31.666360 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 295.204508762955 Dec: 44.9096354629614 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 12.94
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 12.94
Analysis Position: [ source = BAT ]
RA: 295.204508762955 Dec: 44.9096354629614 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 295.20695028219 Dec: 44.9326548034124 [deg; J2000]
{ 19h 40m 49.7s , +44d 55' 57.6" }
+/- 2.42959923170196 [arcmin] (estimated 90% radius based on SNR)
+/- 1.05821666267262 [arcmin] (formal 1-sigma fit error)
SNR: 8.55765169539298
Angular difference between the analysis and refined position is 1.385050 arcmin
Partial Coding Fraction: 0.5078125 [ including projection effects ]
Duration
T90: 217.023999810219 +/- 23.5884935159922
Measured from: -138.743999958038
to: 78.2799998521805 [s; relative to TRIGTIME]
T50: 90.0479998588562 +/- 19.8181041459309
Measured from: -45.5599999427795
to: 44.4879999160767 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 41.8439999818802
to: 42.8439999818802 [s; relative to TRIGTIME]
Total Fluence
Measured from: -144.31200003624
to: 92.9359999895096 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.058027 1.382850 1.049393 0.353861
0.132552 0.137462 0.122907 0.114377 [error]
Peak 0.008246 0.037374 0.030884 -0.007082
0.009051 0.009151 0.008147 0.007443 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 237.248 -144.312 92.936
T90 217.024 -138.744 78.280
T50 90.048 -45.560 44.488
Peak 1.000 41.844 42.844
====== 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 -1.637 -0.199 0.195 - - - 1.07e-03 -1.24e-04 1.22e-04 49.520 57
CPL -1.617 -0.913 0.638 914.777 -914.777 -914.777 1.10e-03 -1.49e-04 9.08e-05 49.540 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 -1.309 -0.482 0.497 - - - 5.74e-03 -1.82e-03 1.82e-03 49.670 57
CPL 1.510 -2.378 5.100 65.232 -18.605 71.944 1.24e-01 -1.24e-01 5.06e+01 45.230 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 3.68e-07 6.22e-07 8.00e-07 2.07e-06 2.36e-06 3.86e-06 erg/cm2
90%_error_low -6.42e-08 -6.83e-08 -1.25e-07 -6.08e-07 -2.91e-07 -7.27e-07 erg/cm2
90%_error_hi 6.68e-08 6.80e-08 1.24e-07 7.60e-07 2.95e-07 8.48e-07 erg/cm2
Peak flux PL 1.96e-01 2.22e-01 1.79e-01 2.41e-01 6.85e-01 8.38e-01 ph/cm2/s
90%_error_low -9.65e-02 -7.95e-02 -6.35e-02 -1.33e-01 -2.23e-01 -2.69e-01 ph/cm2/s
90%_error_hi 1.17e-01 7.90e-02 6.34e-02 2.04e-01 2.26e-01 2.72e-01 ph/cm2/s
Fluence CPL 3.70e-07 6.17e-07 7.98e-07 2.13e-06 2.38e-06 3.79e-06 erg/cm2
90%_error_low -6.72e-08 -6.72e-08 -1.48e-07 -1.41e-06 -3.77e-07 -1.31e-06 erg/cm2
90%_error_hi 6.67e-08 9.27e-08 1.53e-07 3.13e-08 2.39e-07 8.81e-07 erg/cm2
Peak flux CPL 1.05e-01 2.61e-01 2.20e-01 3.97e-02 6.21e-01 6.25e-01 ph/cm2/s
90%_error_low -1.05e-01 -1.06e-01 -9.27e-02 -3.97e-02 -2.12e-01 -2.15e-01 ph/cm2/s
90%_error_hi 1.29e-01 1.10e-01 8.48e-02 1.38e-01 2.27e-01 2.45e-01 ph/cm2/s
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