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 v2.48
Process Start Time: Mon Nov 16 14:49:29 EST 2020
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger982201
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Trigger: 00982201 Segment: 000
BAT Trigger Time: 616333400 [s; MET]
Trigger Stop: 616333464 [s; MET]
UTC: 2020-07-13T11:42:54.723580 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 76.9619372814151 Dec: -32.8252812192549 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.86
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 7.86
Analysis Position: [ source = BAT ]
RA: 76.9619372814151 Dec: -32.8252812192549 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 76.9329050179147 Dec: -32.841228625877 [deg; J2000]
{ 05h 07m 43.9s , -32d 50' 28.4" }
+/- 2.74733342335603 [arcmin] (estimated 90% radius based on SNR)
+/- 1.59812657370425 [arcmin] (formal 1-sigma fit error)
SNR: 7.17963122286438
Angular difference between the analysis and refined position is 1.748676 arcmin
Partial Coding Fraction: 0.4648438 [ including projection effects ]
Duration
T90: 41.972000002861 +/- 7.98674435078993
Measured from: 21.1399999856949
to: 63.1119999885559 [s; relative to TRIGTIME]
T50: 20.7480000257492 +/- 9.16834908057172
Measured from: 32.2519999742508
to: 53 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 49.9359999895096
to: 50.9359999895096 [s; relative to TRIGTIME]
Total Fluence
Measured from: 18.4479999542236
to: 65.9800000190735 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.619338 0.661064 0.211871 0.019283
0.079062 0.082224 0.074164 0.074768 [error]
Peak 0.030504 0.027028 0.026173 0.018690
0.011932 0.011876 0.010932 0.011007 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 47.532 18.448 65.980
T90 41.972 21.140 63.112
T50 20.748 32.252 53.000
Peak 1.000 49.936 50.936
====== 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 -2.475 -0.340 0.299 - - - 1.71e-03 -4.13e-04 4.08e-04 42.810 57
CPL -1.251 -0.746 2.255 21.530 -18.929 11.323 1.03e-02 -1.03e-02 3.15e-01 40.950 56
=== 1-s peak spectral analysis ===
(Best model with acceptable fit: N/A)
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 -1.628 -0.939 0.813 - - - 5.98e-03 -2.76e-03 2.44e-03 44.710 57
CPL -1.659 -3.092 1.815 9999.360 N/A N/A 5.89e-03 N/A N/A 44.720 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 2.62e-07 2.67e-07 1.92e-07 2.21e-07 8.08e-07 9.43e-07 erg/cm2
90%_error_low -4.64e-08 -4.43e-08 -6.02e-08 -1.09e-07 -1.43e-07 -2.06e-07 erg/cm2
90%_error_hi 4.73e-08 4.31e-08 6.59e-08 1.65e-07 1.50e-07 2.47e-07 erg/cm2
Peak flux PL 2.78e-01 2.60e-01 1.68e-01 1.68e-01 7.75e-01 8.73e-01 ph/cm2/s
90%_error_low -1.75e-01 -1.13e-01 -1.68e-01 -1.68e-01 -3.11e-01 -3.42e-01 ph/cm2/s
90%_error_hi 2.16e-01 1.06e-01 8.95e-02 2.85e-01 3.12e-01 3.45e-01 ph/cm2/s
Fluence CPL 2.49e-07 3.00e-07 1.52e-07 2.76e-08 7.25e-07 7.29e-07 erg/cm2
90%_error_low -5.16e-08 -5.73e-08 -8.58e-08 -2.65e-08 -1.42e-07 -1.46e-07 erg/cm2
90%_error_hi 5.09e-08 6.24e-08 8.68e-08 2.21e-07 1.74e-07 2.58e-07 erg/cm2
Peak flux CPL 2.55e-01 1.91e-01 9.98e-02 8.83e-02 5.82e-01 6.34e-01 ph/cm2/s
90%_error_low -2.55e-01 -1.91e-01 -9.98e-02 -8.83e-02 -5.82e-01 -6.34e-01 ph/cm2/s
90%_error_hi 2.36e-01 1.61e-01 7.96e-02 6.28e-02 4.82e-01 5.14e-01 ph/cm2/s
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