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.
======================================================================
BAT GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.46
Process Start Time: Sun Jan 12 05:28:33 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger548276
======================================================================
Trigger: 00548276 Segment: 000
BAT Trigger Time: 382246602.368 [s; MET]
Trigger Stop: 382246610.56 [s; MET]
UTC: 2013-02-11T03:36:32.164500 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 147.522617639919 Dec: -42.3387481449984 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.01
Image Trigger?: NO
Rate S/N Ratio: 9.38083151964686 [ if not an image trigger ]
Image S/N Ratio: 7.01
Analysis Position: [ source = BAT ]
RA: 147.522617639919 Dec: -42.3387481449984 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 147.518209461479 Dec: -42.3315182282187 [deg; J2000]
{ 09h 50m 04.4s , -42d 19' 53.5" }
+/- 2.15856975934095 [arcmin] (estimated 90% radius based on SNR)
+/- 0.849971320969526 [arcmin] (formal 1-sigma fit error)
SNR: 10.1330049214531
Angular difference between the analysis and refined position is 0.475820 arcmin
Partial Coding Fraction: 0.40625 [ including projection effects ]
Duration
T90: 30.7519999146461 +/- 6.35497978439702
Measured from: -1.42399996519089
to: 29.3279999494553 [s; relative to TRIGTIME]
T50: 9.54399996995926 +/- 6.72705727252734
Measured from: 3.06400001049042
to: 12.6079999804497 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -1.5799999833107
to: -0.579999983310699 [s; relative to TRIGTIME]
Total Fluence
Measured from: -3.40399998426437
to: 32.3120000362396 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.397292 0.447661 0.225546 0.023760
0.053078 0.052888 0.045113 0.038439 [error]
Peak 0.022329 0.035542 0.023731 0.006513
0.008798 0.008814 0.007934 0.006377 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 35.716 -3.404 32.312
T90 30.752 -1.424 29.328
T50 9.544 3.064 12.608
Peak 1.000 -1.580 -0.580
====== 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 -1.853 -0.255 0.243 - - - 1.98e-03 -3.19e-04 3.11e-04 61.910 57
CPL -1.692 -0.618 0.975 84.742 -84.720 -84.742 2.44e-03 -2.44e-03 6.15e-03 61.800 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 -1.554 -0.492 0.466 - - - 5.96e-03 -1.79e-03 1.76e-03 69.770 57
CPL -0.240 -1.662 3.688 69.266 -23.626 -69.266 2.63e-02 -2.63e-02 1.64e+00 68.520 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 1.26e-07 1.87e-07 2.07e-07 4.33e-07 6.52e-07 9.53e-07 erg/cm2
90%_error_low -2.52e-08 -2.54e-08 -4.45e-08 -1.62e-07 -1.03e-07 -2.13e-07 erg/cm2
90%_error_hi 2.61e-08 2.54e-08 4.49e-08 2.17e-07 1.05e-07 2.55e-07 erg/cm2
Peak flux PL 2.58e-01 2.52e-01 1.72e-01 1.83e-01 7.55e-01 8.65e-01 ph/cm2/s
90%_error_low -1.12e-01 -7.69e-02 -6.30e-02 -1.05e-01 -2.21e-01 -2.50e-01 ph/cm2/s
90%_error_hi 1.27e-01 7.57e-02 6.19e-02 1.60e-01 2.22e-01 2.52e-01 ph/cm2/s
Fluence CPL 1.24e-07 1.91e-07 2.07e-07 3.22e-07 6.42e-07 8.44e-07 erg/cm2
90%_error_low -2.75e-08 -2.87e-08 -4.67e-08 -2.49e-07 -1.15e-07 -2.85e-07 erg/cm2
90%_error_hi 2.77e-08 3.33e-08 4.63e-08 1.53e-07 1.12e-07 1.90e-07 erg/cm2
Peak flux CPL 1.99e-01 2.80e-01 1.94e-01 6.43e-02 7.21e-01 7.37e-01 ph/cm2/s
90%_error_low -1.34e-01 -9.12e-02 -7.53e-02 -6.43e-02 -2.31e-01 -2.45e-01 ph/cm2/s
90%_error_hi 1.54e-01 9.90e-02 7.98e-02 1.73e-01 2.30e-01 3.01e-01 ph/cm2/s
======================================================================
Special notes of this burst