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: Sat Mar 9 13:54:13 EST 2024
Host Name: batproc1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1216804
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Trigger: 01216804 Segment: 000
BAT Trigger Time: 730284724.288 [s; MET]
Trigger Stop: 730284725.312 [s; MET]
UTC: 2024-02-22T08:51:31.328680 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 143.247834483184 Dec: -68.0289508826161 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 9.35
Image Trigger?: NO
Rate S/N Ratio: 29.2232783924049 [ if not an image trigger ]
Image S/N Ratio: 9.35
Analysis Position: [ source = BAT ]
RA: 143.247834483184 Dec: -68.0289508826161 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 143.207833587025 Dec: -68.0314074925631 [deg; J2000]
{ 09h 32m 49.9s , -68d 01' 53.1" }
+/- 1.82535659216322 [arcmin] (estimated 90% radius based on SNR)
+/- 0.80098663106405 [arcmin] (formal 1-sigma fit error)
SNR: 12.8755116540803
Angular difference between the analysis and refined position is 0.909921 arcmin
Partial Coding Fraction: 0.9453125 [ including projection effects ]
Duration
T90: 3.94399988651276 +/- 2.33488331466837
Measured from: -2.66799998283386
to: 1.27599990367889 [s; relative to TRIGTIME]
T50: 0.979999899864197 +/- 2.36447378531799
Measured from: -0.0759999752044678
to: 0.903999924659729 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.203999996185303
to: 0.796000003814697 [s; relative to TRIGTIME]
Total Fluence
Measured from: -2.7039999961853
to: 1.36800003051758 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.041681 0.107525 0.133828 0.042187
0.013519 0.014185 0.012804 0.011111 [error]
Peak 0.019692 0.060968 0.061661 0.032709
0.006878 0.007470 0.007353 0.006351 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 4.072 -2.704 1.368
T90 3.944 -2.668 1.276
T50 0.980 -0.076 0.904
Peak 1.000 -0.204 0.796
====== 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 -0.751 -0.215 0.229 - - - 5.29e-03 -7.12e-04 6.98e-04 54.210 57
CPL 0.046 -0.868 1.169 161.653 -64.644 -161.653 1.09e-02 -5.91e-03 1.79e-02 51.960 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 -0.830 -0.226 0.237 - - - 1.08e-02 -1.51e-03 1.50e-03 53.350 57
CPL 0.137 -0.956 1.251 129.992 -43.373 1795.508 2.82e-02 -1.70e-02 6.16e-02 50.360 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 1.37e-08 4.00e-08 9.51e-08 6.20e-07 2.57e-07 7.69e-07 erg/cm2
90%_error_low -3.71e-09 -6.92e-09 -1.17e-08 -1.62e-07 -3.21e-08 -1.67e-07 erg/cm2
90%_error_hi 4.16e-09 6.84e-09 1.16e-08 2.04e-07 3.22e-08 2.05e-07 erg/cm2
Peak flux PL 2.36e-01 3.54e-01 3.98e-01 8.50e-01 1.24e+00 1.84e+00 ph/cm2/s
90%_error_low -6.43e-02 -6.33e-02 -5.56e-02 -2.30e-01 -1.71e-01 -2.74e-01 ph/cm2/s
90%_error_hi 7.18e-02 6.26e-02 5.53e-02 2.83e-01 1.71e-01 2.92e-01 ph/cm2/s
Fluence CPL 1.06e-08 4.06e-08 1.04e-07 2.71e-07 2.50e-07 4.26e-07 erg/cm2
90%_error_low -4.64e-09 -7.80e-09 -1.50e-08 -1.49e-07 -3.42e-08 -1.50e-07 erg/cm2
90%_error_hi 5.32e-09 7.64e-09 1.55e-08 3.48e-07 3.38e-08 3.38e-07 erg/cm2
Peak flux CPL 1.79e-01 3.66e-01 4.43e-01 3.79e-01 1.20e+00 1.37e+00 ph/cm2/s
90%_error_low -7.67e-02 -7.15e-02 -7.08e-02 -1.99e-01 -1.77e-01 -2.73e-01 ph/cm2/s
90%_error_hi 8.64e-02 7.16e-02 7.32e-02 4.77e-01 1.77e-01 4.88e-01 ph/cm2/s
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