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: Sun Oct 23 23:52:32 EDT 2022
Host Name: batproc1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1091527
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Trigger: 01091527 Segment: 000
BAT Trigger Time: 662706639.872 [s; MET]
Trigger Stop: 662706640.896 [s; MET]
UTC: 2022-01-01T05:10:11.514060 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 1.37998432654438 Dec: 31.7525909746098 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 11.24
Image Trigger?: NO
Rate S/N Ratio: 20.3960780543711 [ if not an image trigger ]
Image S/N Ratio: 11.24
Analysis Position: [ source = BAT ]
RA: 1.37998432654438 Dec: 31.7525909746098 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 1.36213632842002 Dec: 31.7582780258658 [deg; J2000]
{ 00h 05m 26.9s , +31d 45' 29.8" }
+/- 2.19766030123086 [arcmin] (estimated 90% radius based on SNR)
+/- 0.906989735109814 [arcmin] (formal 1-sigma fit error)
SNR: 9.87650504315148
Angular difference between the analysis and refined position is 0.972406 arcmin
Partial Coding Fraction: 0.6484375 [ including projection effects ]
Duration
T90: 161.888000011444 +/- 12.7097258213482
Measured from: 3.03999996185303
to: 164.927999973297 [s; relative to TRIGTIME]
T50: 36.9199999570847 +/- 1.02391410648819
Measured from: 77.5640000104904
to: 114.483999967575 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 89.0720000267029
to: 90.0720000267029 [s; relative to TRIGTIME]
Total Fluence
Measured from: -58.0759999752045
to: 259.103999972343 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 8.141589 12.661661 11.651156 3.393386
0.131823 0.141000 0.129137 0.110378 [error]
Peak 0.165280 0.292819 0.324142 0.101592
0.009325 0.011492 0.011857 0.008243 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 317.180 -58.076 259.104
T90 161.888 3.040 164.928
T50 36.920 77.564 114.484
Peak 1.000 89.072 90.072
====== 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 -1.265 -0.031 0.031 - - - 7.49e-03 -1.25e-04 1.24e-04 42.090 57
CPL -1.159 -0.083 0.127 483.172 -251.493 -483.172 8.28e-03 -8.10e-04 1.03e-03 39.980 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 -1.011 -0.070 0.070 - - - 5.79e-02 -2.35e-03 2.35e-03 61.570 57
CPL -0.723 -0.257 0.289 252.874 -98.172 1939.586 7.81e-02 -1.77e-02 2.64e-02 58.270 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 2.44e-06 5.17e-06 8.60e-06 3.26e-05 2.37e-05 4.88e-05 erg/cm2
90%_error_low -8.96e-08 -1.11e-07 -1.50e-07 -1.36e-06 -3.87e-07 -1.40e-06 erg/cm2
90%_error_hi 9.12e-08 1.11e-07 1.50e-07 1.40e-06 3.87e-07 1.44e-06 erg/cm2
Peak flux PL 6.99e-04 6.62e-03 9.71e-02 8.65e+00 4.52e-01 8.44e+00 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 2.36e-06 5.18e-06 8.70e-06 2.87e-05 2.36e-05 4.50e-05 erg/cm2
90%_error_low -1.25e-07 -1.13e-07 -1.85e-07 -3.89e-06 -4.12e-07 -3.87e-06 erg/cm2
90%_error_hi 1.23e-07 1.13e-07 1.86e-07 3.66e-06 4.12e-07 4.18e-06 erg/cm2
Peak flux CPL 1.39e+00 2.05e+00 2.07e+00 2.66e+00 6.60e+00 8.17e+00 ph/cm2/s
90%_error_low -1.51e-01 -1.07e-01 -1.12e-01 -6.26e-01 -2.82e-01 -6.85e-01 ph/cm2/s
90%_error_hi 1.54e-01 1.08e-01 1.14e-01 8.22e-01 2.81e-01 8.79e-01 ph/cm2/s
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