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 12 01:43:01 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger557828
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Trigger: 00557828 Segment: 000
BAT Trigger Time: 392506731.072 [s; MET]
Trigger Stop: 392506732.096 [s; MET]
UTC: 2013-06-09T21:38:40.416520 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 53.7539682175759 Dec: -40.1534346904126 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 11.03
Image Trigger?: NO
Rate S/N Ratio: 44.4747119158742 [ if not an image trigger ]
Image S/N Ratio: 11.03
Analysis Position: [ source = BAT ]
RA: 53.7539682175759 Dec: -40.1534346904126 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 53.7763308512089 Dec: -40.1700077063953 [deg; J2000]
{ 03h 35m 06.3s , -40d 10' 12.0" }
+/- 0.719130072931289 [arcmin] (estimated 90% radius based on SNR)
+/- 0.231024776243211 [arcmin] (formal 1-sigma fit error)
SNR: 48.7168461198664
Angular difference between the analysis and refined position is 1.428375 arcmin
Partial Coding Fraction: 0.4375 [ including projection effects ]
Duration
T90: 211.171999931335 +/- 17.0554920155477
Measured from: 0.191999971866608
to: 211.363999903202 [s; relative to TRIGTIME]
T50: 116.479999899864 +/- 41.0450455432533
Measured from: 7.97200000286102
to: 124.451999902725 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 16.7799999713898
to: 17.7799999713898 [s; relative to TRIGTIME]
Total Fluence
Measured from: -7.83600002527237
to: 309.8599999547 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 5.721047 8.164473 7.901362 2.648463
0.119386 0.129113 0.122205 0.108334 [error]
Peak 0.190165 0.342102 0.406581 0.156839
0.013369 0.016842 0.018138 0.014130 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 317.696 -7.836 309.860
T90 211.172 0.192 211.364
T50 116.480 7.972 124.452
Peak 1.000 16.780 17.780
====== 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 -1.222 -0.039 0.040 - - - 5.12e-03 -1.04e-04 1.04e-04 53.440 57
CPL -1.217 -0.040 0.040 9997.080 -9997.080 -9997.080 5.14e-03 -1.03e-04 5.26e-04 53.500 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 -0.921 -0.085 0.086 - - - 7.44e-02 -3.68e-03 3.67e-03 53.180 57
CPL -0.772 -0.187 0.348 484.471 -484.471 -484.471 8.66e-02 -8.95e-03 3.52e-02 52.580 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 1.60e-06 3.49e-06 5.98e-06 2.37e-05 1.64e-05 3.48e-05 erg/cm2
90%_error_low -7.28e-08 -9.13e-08 -1.33e-07 -1.27e-06 -3.37e-07 -1.32e-06 erg/cm2
90%_error_hi 7.44e-08 9.11e-08 1.32e-07 1.33e-06 3.38e-07 1.36e-06 erg/cm2
Peak flux PL 6.81e-04 8.30e-03 1.08e-01 9.32e+00 4.89e-01 9.29e+00 ph/cm2/s
90%_error_low 5.06e-05 7.72e-04 -5.14e-03 -4.02e-01 -2.35e-02 -3.04e-01 ph/cm2/s
90%_error_hi 1.76e-04 2.16e-03 9.15e-03 6.78e-01 3.84e-02 9.20e-01 ph/cm2/s
Fluence CPL 1.60e-06 3.49e-06 5.99e-06 2.35e-05 1.64e-05 3.61e-05 erg/cm2
90%_error_low N/A -9.14e-08 N/A N/A N/A N/A erg/cm2
90%_error_hi N/A 9.12e-08 N/A N/A N/A N/A erg/cm2
Peak flux CPL 1.70e+00 2.53e+00 2.70e+00 4.44e+00 8.51e+00 1.14e+01 ph/cm2/s
90%_error_low -2.27e-01 -1.63e-01 -1.65e-01 -1.26e+00 -4.34e-01 -1.32e+00 ph/cm2/s
90%_error_hi 2.00e-01 1.64e-01 1.82e-01 9.07e-01 4.34e-01 1.11e+00 ph/cm2/s
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