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: Wed Jun 14 12:31:15 EDT 2023
Host Name: batproc1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1120270
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Trigger: 01120270 Segment: 000
BAT Trigger Time: 682111413.248 [s; MET]
Trigger Stop: 682111417.344 [s; MET]
UTC: 2022-08-13T19:23:03.576540 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 81.5009850183749 Dec: -32.9854787271802 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 9.31
Image Trigger?: NO
Rate S/N Ratio: 14.6969384566991 [ if not an image trigger ]
Image S/N Ratio: 9.31
Analysis Position: [ source = BAT ]
RA: 81.5009850183749 Dec: -32.9854787271802 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 81.5318616030171 Dec: -33.0182804922456 [deg; J2000]
{ 05h 26m 07.6s , -33d 01' 05.8" }
+/- 1.59762721504959 [arcmin] (estimated 90% radius based on SNR)
+/- 0.748439264028011 [arcmin] (formal 1-sigma fit error)
SNR: 15.5753984542622
Angular difference between the analysis and refined position is 2.507464 arcmin
Partial Coding Fraction: 0.9609375 [ including projection effects ]
Duration
T90: 16.5920000076294 +/- 1.91230227329654
Measured from: -8.42000007629395
to: 8.17199993133545 [s; relative to TRIGTIME]
T50: 6.567999958992 +/- 3.85143511084278
Measured from: -0.860000014305115
to: 5.70799994468689 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 1.87599992752075
to: 2.87599992752075 [s; relative to TRIGTIME]
Total Fluence
Measured from: -9.62800002098083
to: 8.87199997901917 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.175953 0.293376 0.234420 0.057985
0.027611 0.029020 0.026120 0.023943 [error]
Peak 0.015077 0.032958 0.029060 0.010621
0.006348 0.006953 0.006340 0.005765 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 18.500 -9.628 8.872
T90 16.592 -8.420 8.172
T50 6.568 -0.860 5.708
Peak 1.000 1.876 2.876
====== 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 -1.417 -0.192 0.189 - - - 2.61e-03 -3.01e-04 2.99e-04 55.070 57
CPL -0.387 -0.853 1.066 77.484 -18.271 122.366 8.65e-03 -5.37e-03 2.01e-02 50.690 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 -1.220 -0.412 0.408 - - - 5.41e-03 -1.29e-03 1.28e-03 44.570 57
CPL 0.166 -1.567 3.929 84.289 -29.956 -84.289 2.40e-02 -2.40e-02 1.32e+00 43.190 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 5.70e-08 1.10e-07 1.65e-07 5.34e-07 4.65e-07 8.67e-07 erg/cm2
90%_error_low -1.02e-08 -1.26e-08 -2.48e-08 -1.52e-07 -6.00e-08 -1.75e-07 erg/cm2
90%_error_hi 1.06e-08 1.26e-08 2.47e-08 1.88e-07 6.10e-08 2.05e-07 erg/cm2
Peak flux PL 1.71e-01 2.03e-01 1.74e-01 2.54e-01 6.37e-01 8.02e-01 ph/cm2/s
90%_error_low -6.71e-02 -5.38e-02 -5.03e-02 -1.25e-01 -1.52e-01 -2.01e-01 ph/cm2/s
90%_error_hi 7.66e-02 5.27e-02 4.92e-02 1.81e-01 1.52e-01 2.12e-01 ph/cm2/s
Fluence CPL 4.79e-08 1.22e-07 1.73e-07 1.46e-07 4.28e-07 4.89e-07 erg/cm2
90%_error_low -1.28e-08 -1.60e-08 -2.82e-08 -8.86e-08 -6.45e-08 -1.09e-07 erg/cm2
90%_error_hi 1.30e-08 1.66e-08 2.85e-08 2.62e-07 6.73e-08 2.62e-07 erg/cm2
Peak flux CPL 1.22e-01 2.20e-01 1.97e-01 8.29e-02 5.99e-01 6.22e-01 ph/cm2/s
90%_error_low -1.22e-01 -6.40e-02 -6.12e-02 -8.29e-02 -1.69e-01 -1.90e-01 ph/cm2/s
90%_error_hi 1.02e-01 6.68e-02 6.51e-02 2.25e-01 1.63e-01 2.87e-01 ph/cm2/s
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