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: Sat Nov 16 17:37:19 EST 2024
Host Name: batproc1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1228797
======================================================================
Trigger: 01228797 Segment: 000
BAT Trigger Time: 737523421.76 [s; MET]
Trigger Stop: 737523422.784 [s; MET]
UTC: 2024-05-16T03:36:28.304860 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 212.770476713133 Dec: -63.5049126358497 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.02
Image Trigger?: NO
Rate S/N Ratio: 15.8113883008419 [ if not an image trigger ]
Image S/N Ratio: 7.02
Analysis Position: [ source = BAT ]
RA: 212.770476713133 Dec: -63.5049126358497 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 212.783117894027 Dec: -63.4935184508366 [deg; J2000]
{ 14h 11m 07.9s , -63d 29' 36.7" }
+/- 1.64449363365327 [arcmin] (estimated 90% radius based on SNR)
+/- 0.737380693548003 [arcmin] (formal 1-sigma fit error)
SNR: 14.9451733346865
Angular difference between the analysis and refined position is 0.762836 arcmin
Partial Coding Fraction: 0.4570312 [ including projection effects ]
Duration
T90: 85.1199998855591 +/- 31.1484784603325
Measured from: -3.66400003433228
to: 81.4559998512268 [s; relative to TRIGTIME]
T50: 28.2879999876022 +/- 9.80286968393864
Measured from: 1.39199995994568
to: 29.6799999475479 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.0360000133514404
to: 0.96399998664856 [s; relative to TRIGTIME]
Total Fluence
Measured from: -4.75199997425079
to: 112.496000051498 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.541978 0.849380 0.865236 0.482731
0.100470 0.092753 0.076767 0.063178 [error]
Peak 0.018732 0.017982 0.050627 0.036445
0.012317 0.011707 0.010138 0.008710 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 117.248 -4.752 112.496
T90 85.120 -3.664 81.456
T50 28.288 1.392 29.680
Peak 1.000 -0.036 0.964
====== 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 -1.033 -0.190 0.201 - - - 1.57e-03 -1.68e-04 1.64e-04 64.210 57
CPL -1.041 -0.178 0.218 9999.360 -9999.360 -9999.360 1.59e-03 -1.74e-04 1.42e-04 64.300 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 -0.332 -0.609 0.778 - - - 6.18e-03 -6.18e-03 2.79e-03 46.810 57
CPL 0.320 -0.243 -0.320 308.609 -215.878 -308.609 8.76e-03 -8.76e-03 9.54e-01 46.710 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 1.52e-07 3.73e-07 7.29e-07 3.52e-06 1.97e-06 4.77e-06 erg/cm2
90%_error_low -3.58e-08 -5.41e-08 -7.09e-08 -7.96e-07 -1.87e-07 -8.11e-07 erg/cm2
90%_error_hi 3.94e-08 5.28e-08 7.04e-08 9.75e-07 1.87e-07 9.62e-07 erg/cm2
Peak flux PL 8.41e-02 1.71e-01 2.72e-01 9.61e-01 7.56e-01 1.49e+00 ph/cm2/s
90%_error_low -8.41e-02 -9.86e-02 -8.59e-02 -4.63e-01 -2.53e-01 -4.44e-01 ph/cm2/s
90%_error_hi 1.15e-01 1.19e-01 7.97e-02 7.94e-01 2.78e-01 6.39e-01 ph/cm2/s
Fluence CPL 1.64e-07 3.76e-07 7.29e-07 3.49e-06 1.98e-06 4.56e-06 erg/cm2
90%_error_low -4.80e-08 -5.70e-08 -7.09e-08 -9.49e-07 -1.93e-07 -8.75e-07 erg/cm2
90%_error_hi 2.73e-08 5.00e-08 7.04e-08 9.71e-07 1.81e-07 1.17e-06 erg/cm2
Peak flux CPL 4.40e-02 1.45e-01 2.86e-01 9.60e-01 7.37e-01 1.46e+00 ph/cm2/s
90%_error_low -4.40e-02 -1.45e-01 -9.70e-02 -9.60e-01 -3.28e-01 -1.02e+00 ph/cm2/s
90%_error_hi 1.48e-01 1.42e-01 1.36e-01 4.05e-01 2.90e-01 1.44e-01 ph/cm2/s
======================================================================
Special notes of this burst