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 v2.47
Process Start Time: Mon May 18 15:10:11 EDT 2020
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger946476
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Trigger: 00946476 Segment: 000
BAT Trigger Time: 599184104 [s; MET]
Trigger Stop: 599184176 [s; MET]
UTC: 2019-12-28T00:01:19.837560 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 5.3392435854354 Dec: -8.67033493468903 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 12.82
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 12.82
Analysis Position: [ source = BAT ]
RA: 5.3392435854354 Dec: -8.67033493468903 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 5.36285866931138 Dec: -8.67732460528768 [deg; J2000]
{ 00h 21m 27.1s , -08d 40' 38.4" }
+/- 1.39565357880773 [arcmin] (estimated 90% radius based on SNR)
+/- 0.649113647308929 [arcmin] (formal 1-sigma fit error)
SNR: 18.8926634927409
Angular difference between the analysis and refined position is 1.462135 arcmin
Partial Coding Fraction: 0.90625 [ including projection effects ]
Duration
T90: 193.815999984741 +/- 29.8751412512363
Measured from: -31.9639999866486
to: 161.851999998093 [s; relative to TRIGTIME]
T50: 116.37199985981 +/- 13.0497353837348
Measured from: 1.51600003242493
to: 117.887999892235 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 54.5920000076294
to: 55.5920000076294 [s; relative to TRIGTIME]
Total Fluence
Measured from: -39.3480000495911
to: 191.284000039101 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.756200 1.743578 0.930778 0.088128
0.100414 0.103984 0.091824 0.085409 [error]
Peak 0.024668 0.032610 0.017262 0.005691
0.006902 0.007102 0.006243 0.005646 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 230.632 -39.348 191.284
T90 193.816 -31.964 161.852
T50 116.372 1.516 117.888
Peak 1.000 54.592 55.592
====== 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 -2.027 -0.146 0.141 - - - 1.08e-03 -9.79e-05 9.62e-05 52.420 57
CPL -1.784 -0.328 0.595 37.667 -32.644 -37.667 1.48e-03 -6.33e-04 1.71e-03 51.820 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 -1.930 -0.551 0.462 - - - 4.30e-03 -1.50e-03 1.40e-03 79.520 57
CPL -1.430 -0.747 2.696 49.902 N/A N/A 8.23e-03 N/A N/A 79.300 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 5.22e-07 6.96e-07 6.83e-07 1.20e-06 2.30e-06 3.10e-06 erg/cm2
90%_error_low -5.39e-08 -4.85e-08 -8.63e-08 -2.81e-07 -1.92e-07 -3.77e-07 erg/cm2
90%_error_hi 5.52e-08 4.85e-08 8.78e-08 3.36e-07 1.95e-07 4.20e-07 erg/cm2
Peak flux PL 2.68e-01 2.09e-01 1.10e-01 8.34e-02 6.25e-01 6.70e-01 ph/cm2/s
90%_error_low -9.20e-02 -5.37e-02 -4.79e-02 -5.36e-02 -1.58e-01 -1.75e-01 ph/cm2/s
90%_error_hi 9.77e-02 5.34e-02 4.94e-02 8.96e-02 1.58e-01 1.78e-01 ph/cm2/s
Fluence CPL 5.08e-07 7.15e-07 6.76e-07 7.64e-07 2.23e-06 3.12e-06 erg/cm2
90%_error_low -6.15e-08 -6.00e-08 -9.41e-08 -4.60e-07 -2.32e-07 -3.37e-07 erg/cm2
90%_error_hi 5.89e-08 6.35e-08 9.18e-08 8.94e-07 2.25e-07 9.04e-07 erg/cm2
Peak flux CPL 2.54e-01 2.22e-01 1.11e-01 4.42e-02 6.16e-01 6.32e-01 ph/cm2/s
90%_error_low -1.09e-01 N/A -5.30e-02 -4.42e-02 -1.61e-01 N/A ph/cm2/s
90%_error_hi 1.02e-01 N/A 5.36e-02 5.83e-02 1.62e-01 N/A ph/cm2/s
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