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 Jun 29 14:53:54 EDT 2020
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger974827
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Trigger: 00974827 Segment: 000
BAT Trigger Time: 612354468.864 [s; MET]
Trigger Stop: 612354469.376 [s; MET]
UTC: 2020-05-28T10:27:23.846900 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 176.636774868885 Dec: 58.1471189930449 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 9.17
Image Trigger?: NO
Rate S/N Ratio: 15.3948043183407 [ if not an image trigger ]
Image S/N Ratio: 9.17
Analysis Position: [ source = BAT ]
RA: 176.636774868885 Dec: 58.1471189930449 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 176.635874179899 Dec: 58.1849494187847 [deg; J2000]
{ 11h 46m 32.6s , +58d 11' 05.8" }
+/- 0.686444883629976 [arcmin] (estimated 90% radius based on SNR)
+/- 0.229830573673835 [arcmin] (formal 1-sigma fit error)
SNR: 52.064157854471
Angular difference between the analysis and refined position is 2.270005 arcmin
Partial Coding Fraction: 0.625 [ including projection effects ]
Duration
T90: 59.9839999675751 +/- 1.92381702054219
Measured from: 4.74000000953674
to: 64.7239999771118 [s; relative to TRIGTIME]
T50: 24.6319999694824 +/- 0.417612353072037
Measured from: 28.0600000619888
to: 52.6920000314713 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 33.8159999847412
to: 34.8159999847412 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.73199999332428
to: 132.34399998188 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 12.531114 13.062307 6.699846 0.944570
0.091608 0.093892 0.077326 0.059484 [error]
Peak 0.607270 0.762010 0.512094 0.097064
0.013934 0.015551 0.013292 0.007421 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 133.076 -0.732 132.344
T90 59.984 4.740 64.724
T50 24.632 28.060 52.692
Peak 1.000 33.816 34.816
====== 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: CPL)
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 -2.100 -0.032 0.032 - - - 1.42e-02 -2.23e-04 2.23e-04 64.330 57
CPL -1.616 -0.139 0.143 43.143 -6.094 4.350 2.34e-02 -3.09e-03 3.67e-03 26.680 56
=== 1-s peak spectral analysis ===
(Best model with acceptable fit: CPL)
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 -1.678 -0.049 0.049 - - - 1.24e-01 -3.36e-03 3.36e-03 54.660 57
CPL -1.173 -0.210 0.220 87.722 -11.939 25.083 2.15e-01 -4.27e-02 5.63e-02 36.870 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 4.24e-06 5.42e-06 5.06e-06 8.29e-06 1.75e-05 2.30e-05 erg/cm2
90%_error_low -1.40e-07 -1.02e-07 -9.94e-08 -3.68e-07 -2.78e-07 -4.27e-07 erg/cm2
90%_error_hi 1.42e-07 1.02e-07 9.91e-08 3.80e-07 2.78e-07 4.32e-07 erg/cm2
Peak flux PL 6.07e+00 5.50e+00 3.44e+00 3.28e+00 1.64e+01 1.83e+01 ph/cm2/s
90%_error_low -3.05e-01 -1.67e-01 -1.14e-01 -2.24e-01 -4.83e-01 -4.92e-01 ph/cm2/s
90%_error_hi 3.12e-01 1.66e-01 1.14e-01 2.34e-01 4.85e-01 4.92e-01 ph/cm2/s
Fluence CPL 3.73e-06 5.50e-06 5.21e-06 4.91e-06 1.68e-05 1.93e-05 erg/cm2
90%_error_low -1.89e-07 -1.07e-07 -1.11e-07 -6.23e-07 -3.33e-07 -7.44e-07 erg/cm2
90%_error_hi 1.93e-07 1.07e-07 1.11e-07 7.37e-07 3.33e-07 8.44e-07 erg/cm2
Peak flux CPL 5.38e+00 5.65e+00 3.60e+00 2.06e+00 1.58e+01 1.67e+01 ph/cm2/s
90%_error_low -3.96e-01 -1.82e-01 -1.34e-01 -3.46e-01 -5.30e-01 -6.78e-01 ph/cm2/s
90%_error_hi 4.05e-01 1.82e-01 1.35e-01 4.26e-01 5.33e-01 7.19e-01 ph/cm2/s
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