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 Oct 19 15:03:23 EDT 2024
Host Name: batproc1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1246907
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Trigger: 01246907 Segment: 000
BAT Trigger Time: 744516176.576 [s; MET]
Trigger Stop: 744516177.6 [s; MET]
UTC: 2024-08-05T02:02:22.641800 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 190.91086426608 Dec: -53.6216831669858 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 18.95
Image Trigger?: NO
Rate S/N Ratio: 73.4642770331268 [ if not an image trigger ]
Image S/N Ratio: 18.95
Analysis Position: [ source = BAT ]
RA: 190.91086426608 Dec: -53.6216831669858 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 190.920216420598 Dec: -53.6019269889522 [deg; J2000]
{ 12h 43m 40.9s , -53d 36' 06.9" }
+/- 0.783527690103281 [arcmin] (estimated 90% radius based on SNR)
+/- 0.210640894738561 [arcmin] (formal 1-sigma fit error)
SNR: 43.099210003768
Angular difference between the analysis and refined position is 1.231227 arcmin
Partial Coding Fraction: 0.3164062 [ including projection effects ]
Duration
T90: 40.2439999580383 +/- 6.71502342177856
Measured from: -1.32400000095367
to: 38.9199999570847 [s; relative to TRIGTIME]
T50: 6.92399990558624 +/- 0.619225337973124
Measured from: 1.42400002479553
to: 8.34799993038177 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 3.28400003910065
to: 4.28400003910065 [s; relative to TRIGTIME]
Total Fluence
Measured from: -2.36000001430511
to: 254.152000069618 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 2.797235 4.162310 4.210288 1.457753
0.124784 0.131597 0.119724 0.100592 [error]
Peak 0.149837 0.333868 0.419570 0.153352
0.016803 0.020619 0.022528 0.016825 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 256.512 -2.360 254.152
T90 40.244 -1.324 38.920
T50 6.924 1.424 8.348
Peak 1.000 3.284 4.284
====== 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 -1.205 -0.062 0.062 - - - 3.32e-03 -1.11e-04 1.11e-04 57.680 57
CPL -1.211 -0.056 0.079 9999.360 -9999.360 -9999.360 3.29e-03 -7.29e-05 8.36e-04 58.130 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 -0.796 -0.103 0.106 - - - 6.92e-02 -4.46e-03 4.43e-03 54.850 57
CPL -0.269 -0.423 0.469 201.344 -66.375 489.098 1.15e-01 -3.79e-02 6.20e-02 50.230 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 8.24e-07 1.81e-06 3.15e-06 1.27e-05 8.62e-06 1.85e-05 erg/cm2
90%_error_low -5.84e-08 -7.58e-08 -1.17e-07 -1.09e-06 -2.99e-07 -1.14e-06 erg/cm2
90%_error_hi 6.01e-08 7.54e-08 1.17e-07 1.16e-06 2.99e-07 1.20e-06 erg/cm2
Peak flux PL 6.88e-04 8.57e-03 8.59e-02 8.44e+00 3.86e-01 8.52e+00 ph/cm2/s
90%_error_low -3.77e-05 -5.10e-04 5.19e-03 -5.20e-01 2.78e-02 -5.01e-01 ph/cm2/s
90%_error_hi 1.47e-04 1.54e-03 2.67e-02 9.35e-01 1.17e-01 9.79e-01 ph/cm2/s
Fluence CPL 8.24e-07 1.81e-06 3.14e-06 1.28e-05 8.62e-06 1.84e-05 erg/cm2
90%_error_low -4.06e-08 -6.90e-08 -1.17e-07 -3.44e-06 -3.17e-07 -3.11e-06 erg/cm2
90%_error_hi 5.95e-08 7.51e-08 1.31e-07 1.88e-06 2.60e-07 6.27e-07 erg/cm2
Peak flux CPL 1.25e+00 2.28e+00 2.77e+00 3.60e+00 7.86e+00 9.90e+00 ph/cm2/s
90%_error_low -2.39e-01 -1.99e-01 -2.21e-01 -1.04e+00 -5.08e-01 -1.15e+00 ph/cm2/s
90%_error_hi 2.52e-01 1.99e-01 2.24e-01 1.60e+00 5.08e-01 1.62e+00 ph/cm2/s
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