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 14:41:11 EDT 2020
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger958141
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Trigger: 00958141 Segment: 000
BAT Trigger Time: 604207513.792 [s; MET]
Trigger Stop: 604207517.888 [s; MET]
UTC: 2020-02-24T03:24:49.304000 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 248.794294261897 Dec: 41.6752702574759 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 6.8
Image Trigger?: NO
Rate S/N Ratio: 10.7238052947636 [ if not an image trigger ]
Image S/N Ratio: 6.8
Analysis Position: [ source = BAT ]
RA: 248.794294261897 Dec: 41.6752702574759 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 248.743357953247 Dec: 41.6657925200282 [deg; J2000]
{ 16h 34m 58.4s , +41d 39' 56.9" }
+/- 3.50192149647006 [arcmin] (estimated 90% radius based on SNR)
+/- 2.27280600428937 [arcmin] (formal 1-sigma fit error)
SNR: 5.07618918817333
Angular difference between the analysis and refined position is 2.352665 arcmin
Partial Coding Fraction: 1.015625 [ including projection effects ]
Duration
T90: 45 +/- 9.21954445729289
Measured from: -0.79200005531311
to: 44.2079999446869 [s; relative to TRIGTIME]
T50: 30 +/- 20.0997512422418
Measured from: 2.20799994468689
to: 32.2079999446869 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 2.20799994468689
to: 3.20799994468689 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.79200005531311
to: 49.2079999446869 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.247527 0.093391 0.172701 0.047047
0.042564 0.041388 0.035946 0.031581 [error]
Peak 0.012647 0.013906 0.016637 0.004709
0.006234 0.006129 0.005310 0.004531 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 50.000 -0.792 49.208
T90 45.000 -0.792 44.208
T50 30.000 2.208 32.208
Peak 1.000 2.208 3.208
====== 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 -1.685 -0.545 0.482 - - - 6.31e-04 -1.82e-04 1.63e-04 46.600 57
CPL -2.020 -0.813 0.936 8.405 N/A N/A 4.20e-04 N/A N/A 45.930 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 -1.092 -0.627 0.701 - - - 3.20e-03 -1.12e-03 1.11e-03 72.730 57
CPL -0.996 0.996 4.352 576.175 -576.175 -576.175 3.54e-03 -1.40e-03 2.66e-01 72.720 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 4.79e-08 7.87e-08 9.78e-08 2.41e-07 2.92e-07 4.66e-07 erg/cm2
90%_error_low -1.78e-08 -1.78e-08 -3.87e-08 -1.54e-07 -8.40e-08 -1.95e-07 erg/cm2
90%_error_hi 1.93e-08 1.77e-08 3.76e-08 2.70e-07 8.64e-08 2.90e-07 erg/cm2
Peak flux PL 8.91e-02 1.14e-01 1.07e-01 1.77e-01 3.70e-01 4.88e-01 ph/cm2/s
90%_error_low -5.57e-02 -5.14e-02 -4.17e-02 -1.12e-01 -1.33e-01 -1.74e-01 ph/cm2/s
90%_error_hi 7.13e-02 4.86e-02 4.02e-02 2.04e-01 1.34e-01 1.90e-01 ph/cm2/s
Fluence CPL 4.54e-08 2.44e-08 3.13e-08 2.39e-07 1.98e-07 4.83e-07 erg/cm2
90%_error_low -1.98e-08 N/A -3.05e-08 N/A N/A -2.26e-07 erg/cm2
90%_error_hi 1.95e-08 N/A 4.07e-08 N/A N/A 2.70e-07 erg/cm2
Peak flux CPL 8.74e-02 1.15e-01 1.08e-01 1.62e-01 3.69e-01 4.72e-01 ph/cm2/s
90%_error_low -7.06e-02 -5.20e-02 -4.27e-02 -1.62e-01 -1.40e-01 -2.37e-01 ph/cm2/s
90%_error_hi 7.22e-02 5.66e-02 5.23e-02 1.19e-01 1.35e-01 1.99e-01 ph/cm2/s
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