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 23:58:32 EDT 2022
Host Name: batproc1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1090853
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Trigger: 01090853 Segment: 000
BAT Trigger Time: 662130767.424 [s; MET]
Trigger Stop: 662130771.52 [s; MET]
UTC: 2021-12-25T13:12:19.104820 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 258.568373830299 Dec: 17.2625625868679 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 9.17
Image Trigger?: NO
Rate S/N Ratio: 13.7840487520902 [ if not an image trigger ]
Image S/N Ratio: 9.17
Analysis Position: [ source = BAT ]
RA: 258.568373830299 Dec: 17.2625625868679 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 258.545136051457 Dec: 17.2768509449536 [deg; J2000]
{ 17h 14m 10.8s , +17d 16' 36.7" }
+/- 0.514878835700222 [arcmin] (estimated 90% radius based on SNR)
+/- 0.128342795339958 [arcmin] (formal 1-sigma fit error)
SNR: 78.5178361229359
Angular difference between the analysis and refined position is 1.583546 arcmin
Partial Coding Fraction: 1.015625 [ including projection effects ]
Duration
T90: 121.519999980927 +/- 2.9694658728837
Measured from: 4.61199998855591
to: 126.131999969482 [s; relative to TRIGTIME]
T50: 27.8359999656677 +/- 0.81073800487038
Measured from: 48.2559999227524
to: 76.0919998884201 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 50.1879999637604
to: 51.1879999637604 [s; relative to TRIGTIME]
Total Fluence
Measured from: -24.7760000228882
to: 139.815999984741 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 7.685955 9.997282 7.152638 1.496354
0.101471 0.104583 0.091258 0.071521 [error]
Peak 0.185817 0.291992 0.256508 0.053879
0.009556 0.010872 0.010552 0.006634 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 164.592 -24.776 139.816
T90 121.520 4.612 126.132
T50 27.836 48.256 76.092
Peak 1.000 50.188 51.188
====== 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 -1.599 -0.033 0.033 - - - 1.01e-02 -1.72e-04 1.72e-04 62.800 57
CPL -1.320 -0.138 0.142 139.775 -28.259 76.988 1.34e-02 -1.68e-03 1.98e-03 50.610 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 -1.331 -0.072 0.072 - - - 5.08e-02 -2.18e-03 2.18e-03 72.330 57
CPL -0.611 -0.306 0.329 102.451 -17.129 36.791 1.13e-01 -3.15e-02 4.78e-02 54.600 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 2.33e-06 4.03e-06 5.32e-06 1.43e-05 1.56e-05 2.60e-05 erg/cm2
90%_error_low -8.48e-08 -8.48e-08 -1.06e-07 -6.59e-07 -2.66e-07 -7.00e-07 erg/cm2
90%_error_hi 8.62e-08 8.46e-08 1.06e-07 6.80e-07 2.66e-07 7.15e-07 erg/cm2
Peak flux PL 1.78e+00 1.98e+00 1.57e+00 2.07e+00 6.10e+00 7.40e+00 ph/cm2/s
90%_error_low -1.34e-01 -9.35e-02 -8.15e-02 -2.12e-01 -2.64e-01 -3.28e-01 ph/cm2/s
90%_error_hi 1.37e-01 9.31e-02 8.11e-02 2.27e-01 2.65e-01 3.29e-01 ph/cm2/s
Fluence CPL 2.15e-06 4.07e-06 5.45e-06 1.03e-05 1.53e-05 2.20e-05 erg/cm2
90%_error_low -1.16e-07 -8.82e-08 -1.23e-07 -1.46e-06 -2.98e-07 -1.49e-06 erg/cm2
90%_error_hi 1.18e-07 8.84e-08 1.24e-07 1.77e-06 2.97e-07 1.79e-06 erg/cm2
Peak flux CPL 1.52e+00 2.09e+00 1.69e+00 1.05e+00 5.92e+00 6.35e+00 ph/cm2/s
90%_error_low -1.64e-01 -1.08e-01 -9.71e-02 -2.48e-01 -2.75e-01 -3.78e-01 ph/cm2/s
90%_error_hi 1.68e-01 1.09e-01 9.83e-02 3.32e-01 2.75e-01 4.23e-01 ph/cm2/s
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