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 v2.46
Process Start Time: Thu Apr 11 00:03:29 EDT 2019
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger893808
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Trigger: 00893808 Segment: 000
BAT Trigger Time: 574737299.2 [s; MET]
Trigger Stop: 574737307.392 [s; MET]
UTC: 2019-03-20T01:14:36.601140 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 117.8105857429 Dec: -45.8897753307729 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.63
Image Trigger?: NO
Rate S/N Ratio: 11.4455231422596 [ if not an image trigger ]
Image S/N Ratio: 7.63
Analysis Position: [ source = BAT ]
RA: 117.8105857429 Dec: -45.8897753307729 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 117.826815025873 Dec: -45.8779326989759 [deg; J2000]
{ 07h 51m 18.4s , -45d 52' 40.6" }
+/- 1.90802222886645 [arcmin] (estimated 90% radius based on SNR)
+/- 0.781744084583066 [arcmin] (formal 1-sigma fit error)
SNR: 12.0860645250273
Angular difference between the analysis and refined position is 0.982023 arcmin
Partial Coding Fraction: 0.296875 [ including projection effects ]
Duration
T90: 63 +/- 12.0830459735946
Measured from: -23.2000000476837
to: 39.7999999523163 [s; relative to TRIGTIME]
T50: 24 +/- 9.8488578017961
Measured from: -12.2000000476837
to: 11.7999999523163 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.200000047683716
to: 0.799999952316284 [s; relative to TRIGTIME]
Total Fluence
Measured from: -25.2000000476837
to: 44.7999999523163 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.719862 1.104909 1.397143 0.480562
0.142692 0.145610 0.125982 0.110195 [error]
Peak 0.035209 0.038800 0.086105 0.018330
0.018517 0.018366 0.016780 0.013357 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 70.000 -25.200 44.800
T90 63.000 -23.200 39.800
T50 24.000 -12.200 11.800
Peak 1.000 -0.200 0.800
====== 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 -1.220 -0.196 0.202 - - - 3.80e-03 -4.38e-04 4.35e-04 51.800 57
CPL -0.918 -0.398 0.910 221.131 -221.131 -221.131 5.06e-03 -1.95e-03 6.27e-03 51.360 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 -1.428 -0.611 0.586 - - - 1.06e-02 -3.74e-03 3.74e-03 68.340 57
CPL 7.634 -4.108 -7.634 70.359 -10.120 8.076 1.44e+01 -1.44e+01 4.02e+02 61.810 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 2.61e-07 5.70e-07 9.79e-07 3.88e-06 2.68e-06 5.69e-06 erg/cm2
90%_error_low -6.03e-08 -8.31e-08 -1.18e-07 -9.70e-07 -3.04e-07 -1.03e-06 erg/cm2
90%_error_hi 6.58e-08 8.16e-08 1.16e-07 1.18e-06 3.04e-07 1.20e-06 erg/cm2
Peak flux PL 4.08e-01 4.29e-01 3.19e-01 3.83e-01 1.30e+00 1.54e+00 ph/cm2/s
90%_error_low -2.30e-01 -1.78e-01 -1.27e-01 -2.41e-01 -4.89e-01 -5.41e-01 ph/cm2/s
90%_error_hi 2.98e-01 1.76e-01 1.23e-01 3.67e-01 5.02e-01 5.41e-01 ph/cm2/s
Fluence CPL 2.38e-07 5.76e-07 1.02e-06 2.80e-06 2.66e-06 4.88e-06 erg/cm2
90%_error_low -8.11e-08 -8.67e-08 -1.44e-07 -1.49e-06 -3.11e-07 -1.77e-06 erg/cm2
90%_error_hi 8.25e-08 8.70e-08 1.54e-07 1.39e-06 3.10e-07 7.97e-07 erg/cm2
Peak flux CPL 5.05e-03 1.86e-01 6.21e-01 3.78e-02 8.30e-01 8.30e-01 ph/cm2/s
90%_error_low -3.23e-03 -6.98e-02 -2.20e-01 -3.78e-02 -2.30e-01 -2.29e-01 ph/cm2/s
90%_error_hi 7.77e-02 2.38e-01 1.65e-01 8.40e-02 3.23e-01 3.26e-01 ph/cm2/s
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