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: Sun Mar 17 22:32:51 EDT 2019
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger887512
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Trigger: 00887512 Segment: 000
BAT Trigger Time: 570901470.784 [s; MET]
Trigger Stop: 570901474.88 [s; MET]
UTC: 2019-02-03T15:44:08.426720 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 22.5767302168316 Dec: 55.7384085258687 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.89
Image Trigger?: NO
Rate S/N Ratio: 40 [ if not an image trigger ]
Image S/N Ratio: 7.89
Analysis Position: [ source = BAT ]
RA: 22.5767302168316 Dec: 55.7384085258687 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 22.6030183946477 Dec: 55.7365818867749 [deg; J2000]
{ 01h 30m 24.7s , +55d 44' 11.7" }
+/- 0.930678953476845 [arcmin] (estimated 90% radius based on SNR)
+/- 0.335172611697705 [arcmin] (formal 1-sigma fit error)
SNR: 33.7046608674537
Angular difference between the analysis and refined position is 0.894729 arcmin
Partial Coding Fraction: 0.2167969 [ including projection effects ]
Duration
T90: 86.5600000619888 +/- 64.5798710100376
Measured from: -48.6000000238419
to: 37.960000038147 [s; relative to TRIGTIME]
T50: 33.8559999465942 +/- 2.72380910725493
Measured from: -23.2879999876022
to: 10.567999958992 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -4.08399999141693
to: -3.08399999141693 [s; relative to TRIGTIME]
Total Fluence
Measured from: -56.472000002861
to: 229.959999918938 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 3.896826 6.600239 7.191544 3.360588
0.202493 0.219953 0.204673 0.173606 [error]
Peak 0.056728 0.193250 0.220398 0.113286
0.019105 0.023313 0.023973 0.018696 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 286.432 -56.472 229.960
T90 86.560 -48.600 37.960
T50 33.856 -23.288 10.568
Peak 1.000 -4.084 -3.084
====== 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 -1.125 -0.061 0.061 - - - 5.26e-03 -1.81e-04 1.80e-04 61.150 57
CPL -1.124 -0.057 0.069 9999.360 -9999.360 -9999.360 5.28e-03 -1.65e-04 6.55e-04 61.260 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 -0.933 -0.215 0.223 - - - 3.87e-02 -5.19e-03 5.12e-03 38.730 57
CPL -0.629 -0.488 0.947 291.553 -291.553 -291.553 5.11e-02 -1.67e-02 6.36e-02 38.320 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 1.36e-06 3.14e-06 5.75e-06 2.52e-05 1.56e-05 3.55e-05 erg/cm2
90%_error_low -1.01e-07 -1.40e-07 -1.99e-07 -2.02e-06 -5.20e-07 -2.08e-06 erg/cm2
90%_error_hi 1.04e-07 1.39e-07 1.98e-07 2.14e-06 5.20e-07 2.18e-06 erg/cm2
Peak flux PL 2.44e-04 2.99e-03 3.18e-02 3.04e+00 1.54e-01 3.10e+00 ph/cm2/s
90%_error_low -3.14e-05 -3.59e-04 -2.02e-03 -4.54e-01 -1.89e-02 -4.80e-01 ph/cm2/s
90%_error_hi 3.21e-04 3.34e-03 3.26e-02 1.64e+00 1.24e-01 1.65e+00 ph/cm2/s
Fluence CPL 1.35e-06 3.13e-06 5.68e-06 2.61e-05 1.57e-05 3.56e-05 erg/cm2
90%_error_low N/A -1.88e-07 N/A N/A -5.74e-07 -4.50e-06 erg/cm2
90%_error_hi N/A 1.93e-07 N/A N/A 4.66e-07 7.37e-07 erg/cm2
Peak flux CPL 5.13e-02 1.06e-01 4.89e-02 4.69e-02 3.28e-01 4.03e-01 ph/cm2/s
90%_error_low -5.13e-02 -1.06e-01 -4.89e-02 -4.69e-02 -3.28e-01 -4.03e-01 ph/cm2/s
90%_error_hi -3.47e-02 -9.76e-02 -4.34e-02 -3.72e-02 -3.03e-01 -3.63e-01 ph/cm2/s
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