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 v2.48
Process Start Time: Fri Sep 29 23:35:55 EDT 2023
Host Name: batproc1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1181187
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Trigger: 01181187 Segment: 000
BAT Trigger Time: 712205434.944 [s; MET]
Trigger Stop: 712205435.968 [s; MET]
UTC: 2023-07-28T02:50:03.222400 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 343.538953466444 Dec: 28.1508318660294 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 9.66
Image Trigger?: NO
Rate S/N Ratio: 15.556349186104 [ if not an image trigger ]
Image S/N Ratio: 9.66
Analysis Position: [ source = BAT ]
RA: 343.538953466444 Dec: 28.1508318660294 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 343.514139413016 Dec: 28.1695139122038 [deg; J2000]
{ 22h 54m 03.4s , +28d 10' 10.3" }
+/- 1.30088819788565 [arcmin] (estimated 90% radius based on SNR)
+/- 0.525027114136543 [arcmin] (formal 1-sigma fit error)
SNR: 20.8890369280975
Angular difference between the analysis and refined position is 1.726099 arcmin
Partial Coding Fraction: 0.4960938 [ including projection effects ]
Duration
T90: 14.7599999904633 +/- 0.892307208733889
Measured from: -4.85199999809265
to: 9.90799999237061 [s; relative to TRIGTIME]
T50: 5.54799997806549 +/- 3.44707409608694
Measured from: 0.363999962806702
to: 5.91199994087219 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.407999992370605
to: 1.40799999237061 [s; relative to TRIGTIME]
Total Fluence
Measured from: -5.62000000476837
to: 10.7400000095367 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.547540 0.710483 0.508162 0.076881
0.045459 0.047884 0.041728 0.036886 [error]
Peak 0.081328 0.117314 0.094351 0.005505
0.012280 0.013879 0.011885 0.008954 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 16.360 -5.620 10.740
T90 14.760 -4.852 9.908
T50 5.548 0.364 5.912
Peak 1.000 0.408 1.408
====== 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 -1.580 -0.133 0.131 - - - 7.33e-03 -5.84e-04 5.80e-04 52.730 57
CPL -1.088 -0.503 0.570 89.325 -25.964 3148.915 1.32e-02 -5.86e-03 1.26e-02 49.940 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 -1.581 -0.207 0.200 - - - 1.92e-02 -2.62e-03 2.59e-03 56.060 57
CPL -0.295 -0.902 1.123 64.376 -12.813 40.680 8.94e-02 -8.94e-02 2.44e-01 49.730 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 1.65e-07 2.89e-07 3.87e-07 1.06e-06 1.13e-06 1.90e-06 erg/cm2
90%_error_low -2.01e-08 -2.23e-08 -4.06e-08 -2.16e-07 -9.66e-08 -2.54e-07 erg/cm2
90%_error_hi 2.07e-08 2.23e-08 4.06e-08 2.51e-07 9.76e-08 2.81e-07 erg/cm2
Peak flux PL 8.52e-01 8.17e-01 5.46e-01 5.70e-01 2.45e+00 2.79e+00 ph/cm2/s
90%_error_low -1.62e-01 -1.07e-01 -9.31e-02 -1.68e-01 -3.13e-01 -3.63e-01 ph/cm2/s
90%_error_hi 1.69e-01 1.06e-01 9.26e-02 2.03e-01 3.14e-01 3.66e-01 ph/cm2/s
Fluence CPL 1.54e-07 3.05e-07 3.95e-07 5.08e-07 1.08e-06 1.36e-06 erg/cm2
90%_error_low -2.35e-08 -2.77e-08 -4.37e-08 -2.53e-07 -1.07e-07 -2.75e-07 erg/cm2
90%_error_hi 2.37e-08 2.85e-08 4.42e-08 5.72e-07 1.08e-07 5.70e-07 erg/cm2
Peak flux CPL 8.26e-01 6.39e-01 3.46e-01 3.21e-01 1.94e+00 2.13e+00 ph/cm2/s
90%_error_low -2.18e-01 -1.54e-01 -9.11e-02 -7.87e-02 -4.43e-01 -3.56e-01 ph/cm2/s
90%_error_hi 1.88e-01 1.19e-01 8.29e-02 6.14e-02 3.40e-01 3.14e-01 ph/cm2/s
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