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: Tue Dec 26 15:30:18 EST 2023
Host Name: batproc1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1200812
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Trigger: 01200812 Segment: 000
BAT Trigger Time: 723487472 [s; MET]
Trigger Stop: 723487536 [s; MET]
UTC: 2023-12-05T16:43:59.506460 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 54.1545616599091 Dec: 27.146354688855 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 16.23
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 16.23
Analysis Position: [ source = BAT ]
RA: 54.1545616599091 Dec: 27.146354688855 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 54.1505267917781 Dec: 27.1462970484266 [deg; J2000]
{ 03h 36m 36.1s , +27d 08' 46.7" }
+/- 0.97814002710332 [arcmin] (estimated 90% radius based on SNR)
+/- 0.410163277288769 [arcmin] (formal 1-sigma fit error)
SNR: 31.3928823456744
Angular difference between the analysis and refined position is 0.215452 arcmin
Partial Coding Fraction: 0.5078125 [ including projection effects ]
Duration
T90: 64 +/- 16
Measured from: -31
to: 33 [s; relative to TRIGTIME]
T50: 16 +/- 16
Measured from: -15
to: 1 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -7.5
to: -6.5 [s; relative to TRIGTIME]
Total Fluence
Measured from: -31
to: 81 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 2.768013 4.058473 3.439446 1.021334
0.101446 0.106947 0.093032 0.074000 [error]
Peak 0.043035 0.098737 0.065070 0.024565
0.010079 0.011675 0.010116 0.008259 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 112.000 -31.000 81.000
T90 64.000 -31.000 33.000
T50 16.000 -15.000 1.000
Peak 1.000 -7.500 -6.500
====== 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 -1.392 -0.057 0.057 - - - 6.96e-03 -2.10e-04 2.10e-04 39.810 57
CPL -1.353 -0.140 0.169 931.580 -931.580 -931.580 7.25e-03 -4.75e-04 1.26e-03 39.990 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 -1.248 -0.221 0.228 - - - 1.58e-02 -2.21e-03 2.21e-03 59.370 57
CPL -0.578 -0.772 1.192 104.474 -40.998 -104.474 3.54e-02 -2.10e-02 1.12e-01 57.930 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 9.00e-07 1.77e-06 2.69e-06 8.94e-06 7.55e-06 1.43e-05 erg/cm2
90%_error_low -5.62e-08 -6.45e-08 -9.62e-08 -7.24e-07 -2.39e-07 -7.72e-07 erg/cm2
90%_error_hi 5.76e-08 6.42e-08 9.58e-08 7.68e-07 2.39e-07 8.06e-07 erg/cm2
Peak flux PL 5.11e-01 5.98e-01 5.04e-01 7.17e-01 1.87e+00 2.33e+00 ph/cm2/s
90%_error_low -1.25e-01 -9.70e-02 -8.04e-02 -2.07e-01 -2.70e-01 -3.36e-01 ph/cm2/s
90%_error_hi 1.33e-01 9.53e-02 7.96e-02 2.54e-01 2.70e-01 3.40e-01 ph/cm2/s
Fluence CPL 9.03e-07 1.77e-06 2.69e-06 9.07e-06 7.56e-06 1.44e-05 erg/cm2
90%_error_low -7.84e-08 -6.45e-08 -9.80e-08 -2.22e-06 -2.63e-07 -2.33e-06 erg/cm2
90%_error_hi 5.93e-08 3.39e-08 1.08e-07 5.65e-07 1.28e-07 3.80e-07 erg/cm2
Peak flux CPL 4.64e-01 6.49e-01 5.35e-01 3.39e-01 1.85e+00 1.99e+00 ph/cm2/s
90%_error_low -1.40e-01 -1.21e-01 -9.23e-02 -2.22e-01 -2.72e-01 -3.51e-01 ph/cm2/s
90%_error_hi 1.48e-01 1.30e-01 9.54e-02 4.65e-01 2.73e-01 5.50e-01 ph/cm2/s
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