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 15:05:44 EDT 2020
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger948361
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Trigger: 00948361 Segment: 000
BAT Trigger Time: 600227200.448 [s; MET]
Trigger Stop: 600227208.64 [s; MET]
UTC: 2020-01-09T01:46:16.218040 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 307.170901934691 Dec: 53.0032235193214 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 12.72
Image Trigger?: NO
Rate S/N Ratio: 19.5703857907809 [ if not an image trigger ]
Image S/N Ratio: 12.72
Analysis Position: [ source = BAT ]
RA: 307.170901934691 Dec: 53.0032235193214 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 307.115141759145 Dec: 52.9890950301936 [deg; J2000]
{ 20h 28m 27.6s , +52d 59' 20.7" }
+/- 1.17107677000977 [arcmin] (estimated 90% radius based on SNR)
+/- 0.461953979689776 [arcmin] (formal 1-sigma fit error)
SNR: 24.2738847378558
Angular difference between the analysis and refined position is 2.184781 arcmin
Partial Coding Fraction: 1 [ including projection effects ]
Duration
T90: 112 +/- 32
Measured from: -31.4479999542236
to: 80.5520000457764 [s; relative to TRIGTIME]
T50: 32 +/- 16
Measured from: -15.4479999542236
to: 16.5520000457764 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 8.05200004577637
to: 9.05200004577637 [s; relative to TRIGTIME]
Total Fluence
Measured from: -31.4479999542236
to: 112.552000045776 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.818485 1.150226 0.987526 0.272596
0.080014 0.082252 0.072051 0.063038 [error]
Peak 0.025130 0.032785 0.029477 -0.001019
0.006887 0.007191 0.006239 0.005549 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 144.000 -31.448 112.552
T90 112.000 -31.448 80.552
T50 32.000 -15.448 16.552
Peak 1.000 8.052 9.052
====== 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 -1.305 -0.136 0.137 - - - 1.49e-03 -1.09e-04 1.09e-04 45.470 57
CPL -1.306 -0.132 0.143 9999.360 -9999.360 -9999.360 1.50e-03 -1.07e-04 5.73e-04 45.500 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 -1.301 -0.364 0.374 - - - 5.87e-03 -1.33e-03 1.33e-03 70.310 57
CPL -0.204 -1.264 2.193 78.757 -28.228 -78.757 2.20e-02 -2.20e-02 2.62e-01 68.820 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 2.29e-07 4.74e-07 7.67e-07 2.79e-06 2.12e-06 4.25e-06 erg/cm2
90%_error_low -3.18e-08 -3.92e-08 -7.10e-08 -5.43e-07 -1.74e-07 -5.93e-07 erg/cm2
90%_error_hi 3.32e-08 3.88e-08 7.03e-08 6.33e-07 1.75e-07 6.68e-07 erg/cm2
Peak flux PL 2.00e-01 2.26e-01 1.84e-01 2.49e-01 7.00e-01 8.58e-01 ph/cm2/s
90%_error_low -7.34e-02 -5.65e-02 -4.94e-02 -1.12e-01 -1.60e-01 -1.99e-01 ph/cm2/s
90%_error_hi 8.10e-02 5.54e-02 4.90e-02 1.60e-01 1.60e-01 2.05e-01 ph/cm2/s
Fluence CPL 2.32e-07 4.70e-07 7.61e-07 2.96e-06 2.13e-06 4.08e-06 erg/cm2
90%_error_low N/A -4.76e-08 -8.62e-08 -1.23e-06 -2.36e-07 -9.31e-07 erg/cm2
90%_error_hi N/A 5.39e-08 9.61e-08 9.95e-08 2.15e-07 1.28e-06 erg/cm2
Peak flux CPL 1.69e-01 2.54e-01 1.96e-01 7.98e-02 6.75e-01 6.99e-01 ph/cm2/s
90%_error_low -8.45e-02 -6.91e-02 -5.82e-02 -7.98e-02 -1.63e-01 -1.81e-01 ph/cm2/s
90%_error_hi 9.16e-02 7.48e-02 5.86e-02 2.22e-01 1.64e-01 2.77e-01 ph/cm2/s
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