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: Wed Nov 27 12:20:00 EST 2019
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger927839
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Trigger: 00927839 Segment: 000
BAT Trigger Time: 591917645.376 [s; MET]
Trigger Stop: 591917645.888 [s; MET]
UTC: 2019-10-04T21:33:41.682300 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 49.1767831678255 Dec: -39.6131376723519 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 9.55
Image Trigger?: NO
Rate S/N Ratio: 18.5202591774521 [ if not an image trigger ]
Image S/N Ratio: 9.55
Analysis Position: [ source = BAT ]
RA: 49.1767831678255 Dec: -39.6131376723519 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 49.2009603120258 Dec: -39.6356908255829 [deg; J2000]
{ 03h 16m 48.2s , -39d 38' 08.5" }
+/- 0.649583727901305 [arcmin] (estimated 90% radius based on SNR)
+/- 0.161851599526638 [arcmin] (formal 1-sigma fit error)
SNR: 56.335541040885
Angular difference between the analysis and refined position is 1.754867 arcmin
Partial Coding Fraction: 0.9765625 [ including projection effects ]
Duration
T90: 300.127999901772 +/- 81.8288380767233
Measured from: 0.863999962806702
to: 300.991999864578 [s; relative to TRIGTIME]
T50: 31.9239999055862 +/- 27.7665458537064
Measured from: 3.77199995517731
to: 35.6959998607635 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 2.74799990653992
to: 3.74799990653992 [s; relative to TRIGTIME]
Total Fluence
Measured from: -1.45200002193451
to: 382.783999919891 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.077979 1.325790 1.525328 0.453425
0.112569 0.118395 0.109307 0.108803 [error]
Peak 0.133012 0.237937 0.224278 0.055685
0.008053 0.009916 0.009869 0.007217 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 384.236 -1.452 382.784
T90 300.128 0.864 300.992
T50 31.924 3.772 35.696
Peak 1.000 2.748 3.748
====== 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 -1.096 -0.147 0.149 - - - 7.49e-04 -5.92e-05 5.92e-05 54.850 57
CPL -1.007 -0.223 0.602 593.628 -593.628 -593.628 8.22e-04 -1.24e-04 6.95e-04 54.790 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 -1.128 -0.079 0.079 - - - 4.30e-02 -1.98e-03 1.98e-03 65.750 57
CPL -0.759 -0.303 0.325 184.453 -61.789 501.805 6.41e-02 -1.75e-02 2.59e-02 61.360 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 2.52e-07 5.93e-07 1.11e-06 5.01e-06 3.01e-06 6.97e-06 erg/cm2
90%_error_low -3.97e-08 -5.59e-08 -1.05e-07 -1.02e-06 -2.69e-07 -1.09e-06 erg/cm2
90%_error_hi 4.18e-08 5.51e-08 1.05e-07 1.21e-06 2.72e-07 1.26e-06 erg/cm2
Peak flux PL 1.24e+00 1.56e+00 1.43e+00 2.28e+00 5.00e+00 6.50e+00 ph/cm2/s
90%_error_low -1.07e-01 -8.33e-02 -7.68e-02 -2.50e-01 -2.33e-01 -3.29e-01 ph/cm2/s
90%_error_hi 1.10e-01 8.28e-02 7.64e-02 2.68e-01 2.33e-01 3.33e-01 ph/cm2/s
Fluence CPL 2.47e-07 5.97e-07 1.12e-06 4.41e-06 2.99e-06 6.42e-06 erg/cm2
90%_error_low -5.03e-08 -5.62e-08 -1.12e-07 -2.38e-06 -2.97e-07 -2.43e-06 erg/cm2
90%_error_hi 3.91e-08 6.13e-08 1.20e-07 9.96e-07 2.70e-07 2.31e-06 erg/cm2
Peak flux CPL 1.14e+00 1.60e+00 1.49e+00 1.55e+00 4.94e+00 5.78e+00 ph/cm2/s
90%_error_low -1.31e-01 -9.21e-02 -9.15e-02 -4.07e-01 -2.40e-01 -4.74e-01 ph/cm2/s
90%_error_hi 1.34e-01 9.32e-02 9.27e-02 5.85e-01 2.40e-01 6.14e-01 ph/cm2/s
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