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.
Special note: Due to the low partial coding fraction, the refined position is found using the DETECTION mask. Therefore, the refined position and the mask shadow pattern shown here are from analyses with DETECTION mask, everything else uses the FLUX mask.
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BAT GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.46
Process Start Time: Tue Aug 15 14:34:51 EDT 2017
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger765130
======================================================================
Trigger: 00765130 Segment: 000
BAT Trigger Time: 522975818.88 [s; MET]
Trigger Stop: 522975819.136 [s; MET]
UTC: 2017-07-28T23:03:19.438780 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 238.044095700942 Dec: 70.1423694896049 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 6.73
Image Trigger?: NO
Rate S/N Ratio: 41.5571895103603 [ if not an image trigger ]
Image S/N Ratio: 6.73
Analysis Position: [ source = BAT ]
RA: 238.044095700942 Dec: 70.1423694896049 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: Dec: [deg; J2000]
{ 00h 00m 00.0s , +00d 00' 00.0" }
+/- -inf [arcmin] (estimated 90% radius based on SNR)
+/- 0 [arcmin] (formal 1-sigma fit error)
SNR:
Angular difference between the analysis and refined position is -4778.571352 arcmin
Partial Coding Fraction: 0.05126953 [ including projection effects ]
Duration
T90: 47.6800000071526 +/- 26.496695635164
Measured from: 0.0559999942779541
to: 47.7360000014305 [s; relative to TRIGTIME]
T50: 19.1999999880791 +/- 26.3931530977479
Measured from: 0.439999997615814
to: 19.6399999856949 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.0920000076293945
to: 0.907999992370605 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.0719999670982361
to: 50.5519999861717 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.469871 1.313646 0.635031 0.110905
0.203273 0.215489 0.192223 0.164690 [error]
Peak 0.127635 0.303286 0.414489 0.162809
0.041725 0.047321 0.049444 0.034627 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 50.624 -0.072 50.552
T90 47.680 0.056 47.736
T50 19.200 0.440 19.640
Peak 1.000 -0.092 0.908
====== 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 -1.871 -0.383 0.344 - - - 3.56e-03 -9.55e-04 9.35e-04 70.260 57
CPL 1.441 -1.172 7.607 48.309 -8.593 8.026 1.86e-01 -1.86e-01 1.81e+03 58.000 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 -1.169 -0.233 0.241 - - - 6.66e-02 -1.05e-02 1.05e-02 66.190 57
CPL 0.489 -1.238 1.771 91.706 -19.852 86.618 3.27e-01 -3.27e-01 1.25e+00 60.510 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 3.28e-07 4.79e-07 5.21e-07 1.06e-06 1.65e-06 2.38e-06 erg/cm2
90%_error_low -1.07e-07 -1.19e-07 -1.70e-07 -5.44e-07 -4.35e-07 -7.78e-07 erg/cm2
90%_error_hi 1.17e-07 1.19e-07 1.75e-07 7.95e-07 4.43e-07 9.63e-07 erg/cm2
Peak flux PL 2.68e-04 3.66e-03 3.63e-02 3.62e+00 1.88e-01 3.62e+00 ph/cm2/s
90%_error_low -1.42e-05 -5.21e-04 -7.48e-04 -5.36e-01 -2.73e-02 -4.96e-01 ph/cm2/s
90%_error_hi 3.77e-04 3.67e-03 3.94e-02 1.95e+00 1.38e-01 2.06e+00 ph/cm2/s
Fluence CPL 1.57e-07 7.24e-07 5.35e-07 2.47e-08 1.44e-06 1.44e-06 erg/cm2
90%_error_low -1.07e-07 -1.80e-07 -2.59e-07 N/A -3.73e-07 -3.73e-07 erg/cm2
90%_error_hi 1.37e-07 1.90e-07 2.61e-07 N/A 4.11e-07 4.20e-07 erg/cm2
Peak flux CPL 1.21e+00 2.56e+00 2.70e+00 1.30e+00 7.37e+00 7.76e+00 ph/cm2/s
90%_error_low -6.47e-01 -5.79e-01 -5.09e-01 -6.66e-01 -1.31e+00 -1.52e+00 ph/cm2/s
90%_error_hi 8.05e-01 5.66e-01 5.31e-01 1.25e+00 1.34e+00 1.76e+00 ph/cm2/s
======================================================================
Special notes of this burst