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.
======================================================================
BAT GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.48
Process Start Time: Fri Nov 11 21:37:30 EST 2022
Host Name: batproc1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1048372
======================================================================
Trigger: 01048372 Segment: 000
BAT Trigger Time: 642709453.824 [s; MET]
Trigger Stop: 642709454.848 [s; MET]
UTC: 2021-05-14T18:23:46.806320 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 2.94222114163308 Dec: -21.8920543361152 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 22.43
Image Trigger?: NO
Rate S/N Ratio: 128.61959415268 [ if not an image trigger ]
Image S/N Ratio: 22.43
Analysis Position: [ source = BAT ]
RA: 2.94222114163308 Dec: -21.8920543361152 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 2.94588278545436 Dec: -21.8971230227294 [deg; J2000]
{ 00h 11m 47.0s , -21d 53' 49.6" }
+/- 0.654102462409235 [arcmin] (estimated 90% radius based on SNR)
+/- 0.181302730326634 [arcmin] (formal 1-sigma fit error)
SNR: 55.7803898986487
Angular difference between the analysis and refined position is 0.366122 arcmin
Partial Coding Fraction: 0.796875 [ including projection effects ]
Duration
T90: 70.2079999446869 +/- 0.74051872877279
Measured from: -0.25600004196167
to: 69.9519999027252 [s; relative to TRIGTIME]
T50: 34.6959998607635 +/- 4.32132795543541
Measured from: 8.0440000295639
to: 42.7399998903275 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.519999980926514
to: 0.480000019073486 [s; relative to TRIGTIME]
Total Fluence
Measured from: -1.08399999141693
to: 75.1280000209808 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 3.853861 4.870782 3.243300 0.733942
0.068750 0.072753 0.063717 0.051830 [error]
Peak 0.236611 0.409192 0.384827 0.096096
0.011858 0.014471 0.014388 0.010239 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 76.212 -1.084 75.128
T90 70.208 -0.256 69.952
T50 34.696 8.044 42.740
Peak 1.000 -0.520 0.480
====== 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: 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 -1.655 -0.043 0.043 - - - 1.04e-02 -2.26e-04 2.26e-04 39.960 57
CPL -1.451 -0.171 0.178 145.039 -43.310 393.341 1.29e-02 -2.10e-03 2.62e-03 35.800 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 -1.178 -0.070 0.070 - - - 7.48e-02 -2.99e-03 2.99e-03 58.400 57
CPL -0.594 -0.297 0.318 132.808 -28.579 78.051 1.39e-01 -3.69e-02 5.42e-02 46.480 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 1.17e-06 1.96e-06 2.49e-06 6.33e-06 7.37e-06 1.19e-05 erg/cm2
90%_error_low -5.14e-08 -4.90e-08 -6.90e-08 -3.97e-07 -1.66e-07 -4.33e-07 erg/cm2
90%_error_hi 5.24e-08 4.89e-08 6.88e-08 4.16e-07 1.66e-07 4.47e-07 erg/cm2
Peak flux PL 5.99e-04 1.02e-02 1.15e-01 1.04e+01 3.22e-01 1.05e+01 ph/cm2/s
90%_error_low N/A N/A N/A N/A N/A N/A ph/cm2/s
90%_error_hi N/A N/A N/A N/A N/A N/A ph/cm2/s
Fluence CPL 1.11e-06 1.98e-06 2.52e-06 4.81e-06 7.26e-06 1.04e-05 erg/cm2
90%_error_low -6.80e-08 -5.23e-08 -7.50e-08 -9.52e-07 -1.92e-07 -9.74e-07 erg/cm2
90%_error_hi 6.93e-08 5.26e-08 7.55e-08 1.24e-06 1.92e-07 1.25e-06 erg/cm2
Peak flux CPL 1.97e+00 2.86e+00 2.59e+00 2.12e+00 8.53e+00 9.54e+00 ph/cm2/s
90%_error_low -2.16e-01 -1.43e-01 -1.40e-01 -4.90e-01 -3.74e-01 -6.30e-01 ph/cm2/s
90%_error_hi 2.22e-01 1.44e-01 1.42e-01 6.71e-01 3.73e-01 7.58e-01 ph/cm2/s
======================================================================
Special notes of this burst