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: Fri May 11 18:17:15 EDT 2018
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger823001
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Trigger: 00823001 Segment: 000
BAT Trigger Time: 544758910.528 [s; MET]
Trigger Stop: 544758914.624 [s; MET]
UTC: 2018-04-07T01:54:49.782600 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 35.2408716342746 Dec: 33.4989446062235 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 9.45
Image Trigger?: NO
Rate S/N Ratio: 7.74596669241483 [ if not an image trigger ]
Image S/N Ratio: 9.45
Analysis Position: [ source = BAT ]
RA: 35.2408716342746 Dec: 33.4989446062235 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 35.2313397464931 Dec: 33.5136117845301 [deg; J2000]
{ 02h 20m 55.5s , +33d 30' 49.0" }
+/- 1.80268125809312 [arcmin] (estimated 90% radius based on SNR)
+/- 0.673656164729439 [arcmin] (formal 1-sigma fit error)
SNR: 13.1075006892778
Angular difference between the analysis and refined position is 1.000932 arcmin
Partial Coding Fraction: 0.5234375 [ including projection effects ]
Duration
T90: 100.628000020981 +/- 33.9397290559484
Measured from: -16.1640000343323
to: 84.4639999866486 [s; relative to TRIGTIME]
T50: 31.5279998779297 +/- 8.55009706998901
Measured from: -0.123999953269958
to: 31.4039999246597 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 2.17200005054474
to: 3.17200005054474 [s; relative to TRIGTIME]
Total Fluence
Measured from: -20.5720000267029
to: 107.108000040054 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.976974 0.966010 0.614106 0.207604
0.087969 0.091005 0.080501 0.073522 [error]
Peak 0.035089 0.038146 0.034090 0.010940
0.008429 0.008590 0.007372 0.006594 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 127.680 -20.572 107.108
T90 100.628 -16.164 84.464
T50 31.528 -0.124 31.404
Peak 1.000 2.172 3.172
====== 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 -1.908 -0.202 0.193 - - - 1.23e-03 -1.56e-04 1.52e-04 67.050 57
CPL -1.900 -0.688 0.654 517.472 N/A N/A 1.24e-03 N/A N/A 67.060 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 -1.729 -0.411 0.386 - - - 6.42e-03 -1.70e-03 1.65e-03 55.890 57
CPL -1.116 -1.110 1.919 63.663 N/A N/A 1.42e-02 N/A N/A 55.280 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 2.95e-07 4.23e-07 4.51e-07 8.91e-07 1.44e-06 2.06e-06 erg/cm2
90%_error_low -4.33e-08 -4.24e-08 -7.82e-08 -2.78e-07 -1.77e-07 -3.66e-07 erg/cm2
90%_error_hi 4.44e-08 4.23e-08 7.96e-08 3.53e-07 1.81e-07 4.26e-07 erg/cm2
Peak flux PL 3.29e-01 2.90e-01 1.75e-01 1.59e-01 8.62e-01 9.53e-01 ph/cm2/s
90%_error_low -1.09e-01 -6.74e-02 -5.79e-02 -8.29e-02 -2.00e-01 -2.24e-01 ph/cm2/s
90%_error_hi 1.16e-01 6.72e-02 5.84e-02 1.23e-01 2.00e-01 2.26e-01 ph/cm2/s
Fluence CPL 2.96e-07 4.19e-07 4.51e-07 9.09e-07 1.46e-06 2.06e-06 erg/cm2
90%_error_low -5.04e-08 -4.08e-08 -9.33e-08 -6.44e-07 -2.07e-07 -6.69e-07 erg/cm2
90%_error_hi 4.80e-08 5.79e-08 5.34e-08 2.16e-08 1.64e-07 2.16e-07 erg/cm2
Peak flux CPL 3.09e-01 3.13e-01 1.78e-01 7.36e-02 8.48e-01 8.74e-01 ph/cm2/s
90%_error_low -1.21e-01 -8.22e-02 -6.94e-02 -7.36e-02 -2.01e-01 -2.19e-01 ph/cm2/s
90%_error_hi 1.24e-01 9.15e-02 6.51e-02 1.21e-01 2.02e-01 2.51e-01 ph/cm2/s
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