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 Jan 19 15:11:50 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger357512
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Trigger: 00357512 Segment: 000
BAT Trigger Time: 269384599.552 [s; MET]
Trigger Stop: 269384600.576 [s; MET]
UTC: 2009-07-15T21:03:14.638140 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 251.344210801804 Dec: 44.8267357756654 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 11.48
Image Trigger?: NO
Rate S/N Ratio: 24.9599679486974 [ if not an image trigger ]
Image S/N Ratio: 11.48
Analysis Position: [ source = BAT ]
RA: 251.344210801804 Dec: 44.8267357756654 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 251.337504687415 Dec: 44.8383599885626 [deg; J2000]
{ 16h 45m 21.0s , +44d 50' 18.1" }
+/- 0.591795565878904 [arcmin] (estimated 90% radius based on SNR)
+/- 0.131778457099376 [arcmin] (formal 1-sigma fit error)
SNR: 64.3557521218125
Angular difference between the analysis and refined position is 0.753567 arcmin
Partial Coding Fraction: 1.015625 [ including projection effects ]
Duration
T90: 266.399999916553 +/- 11.596705875929
Measured from: -0.715999960899353
to: 265.683999955654 [s; relative to TRIGTIME]
T50: 63.8599998950958 +/- 1.13974033794588
Measured from: 5.78400003910065
to: 69.6439999341965 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 6.45600003004074
to: 7.45600003004074 [s; relative to TRIGTIME]
Total Fluence
Measured from: -11.6480000019073
to: 292.31200003624 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 2.984596 3.635168 2.561005 0.562827
0.090137 0.094682 0.086041 0.080399 [error]
Peak 0.118522 0.178282 0.151994 0.038735
0.006757 0.007728 0.007357 0.005618 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 303.960 -11.648 292.312
T90 266.400 -0.716 265.684
T50 63.860 5.784 69.644
Peak 1.000 6.456 7.456
====== 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 -1.583 -0.066 0.065 - - - 1.98e-03 -6.63e-05 6.62e-05 55.910 57
CPL -1.582 -0.065 0.200 9998.590 -9998.590 -9998.590 1.98e-03 -6.31e-05 4.81e-04 55.920 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 -1.302 -0.087 0.087 - - - 3.15e-02 -1.53e-03 1.53e-03 34.020 57
CPL -1.182 -0.165 0.337 355.416 -355.416 -355.416 3.60e-02 -5.83e-03 1.61e-02 33.600 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 8.32e-07 1.45e-06 1.94e-06 5.30e-06 5.65e-06 9.52e-06 erg/cm2
90%_error_low -5.18e-08 -5.16e-08 -8.76e-08 -5.25e-07 -2.04e-07 -5.82e-07 erg/cm2
90%_error_hi 5.31e-08 5.14e-08 8.75e-08 5.65e-07 2.05e-07 6.15e-07 erg/cm2
Peak flux PL 1.07e+00 1.21e+00 9.84e-01 1.33e+00 3.75e+00 4.60e+00 ph/cm2/s
90%_error_low -9.48e-02 -6.55e-02 -5.91e-02 -1.62e-01 -1.84e-01 -2.34e-01 ph/cm2/s
90%_error_hi 9.75e-02 6.51e-02 5.87e-02 1.76e-01 1.84e-01 2.36e-01 ph/cm2/s
Fluence CPL 8.32e-07 1.45e-06 1.94e-06 5.55e-06 5.67e-06 9.50e-06 erg/cm2
90%_error_low N/A -4.05e-08 -8.75e-08 -1.73e-06 -3.13e-07 -1.43e-06 erg/cm2
90%_error_hi N/A 6.93e-08 9.59e-08 -1.76e-07 1.60e-07 3.10e-07 erg/cm2
Peak flux CPL 1.05e+00 1.23e+00 9.95e-01 1.15e+00 3.73e+00 4.42e+00 ph/cm2/s
90%_error_low -1.15e-01 -7.19e-02 -6.55e-02 -3.63e-01 -1.92e-01 -4.17e-01 ph/cm2/s
90%_error_hi 1.00e-01 7.37e-02 6.66e-02 2.26e-01 1.92e-01 3.40e-01 ph/cm2/s
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