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 04:11:43 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger553996
======================================================================
Trigger: 00553996 Segment: 000
BAT Trigger Time: 388155401.536 [s; MET]
Trigger Stop: 388155402.048 [s; MET]
UTC: 2013-04-20T12:56:31.073560 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 183.11962611028 Dec: 54.3864374361318 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.39
Image Trigger?: NO
Rate S/N Ratio: 12.6491106406735 [ if not an image trigger ]
Image S/N Ratio: 7.39
Analysis Position: [ source = BAT ]
RA: 183.11962611028 Dec: 54.3864374361318 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 183.102289700254 Dec: 54.3750263124822 [deg; J2000]
{ 12h 12m 24.5s , +54d 22' 30.1" }
+/- 1.10965383602943 [arcmin] (estimated 90% radius based on SNR)
+/- 0.437913986257339 [arcmin] (formal 1-sigma fit error)
SNR: 26.2159005966567
Angular difference between the analysis and refined position is 0.914201 arcmin
Partial Coding Fraction: 1.015625 [ including projection effects ]
Duration
T90: 12.6359999775887 +/- 5.22695322379476
Measured from: -2.24800002574921
to: 10.3879999518394 [s; relative to TRIGTIME]
T50: 4.06799989938736 +/- 0.795225816250442
Measured from: 1.06400001049042
to: 5.13199990987778 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.912000000476837
to: 1.91200000047684 [s; relative to TRIGTIME]
Total Fluence
Measured from: -4.61599999666214
to: 16.0479999780655 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.261012 0.455856 0.365784 0.074017
0.023999 0.025635 0.022783 0.018686 [error]
Peak 0.044047 0.068744 0.060554 0.010679
0.005799 0.006532 0.006005 0.004473 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 20.664 -4.616 16.048
T90 12.636 -2.248 10.388
T50 4.068 1.064 5.132
Peak 1.000 0.912 1.912
====== 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: CPL)
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 -1.380 -0.105 0.104 - - - 3.58e-03 -2.34e-04 2.34e-04 60.980 57
CPL -0.113 -0.494 0.557 74.301 -9.721 17.436 1.55e-02 -6.63e-03 1.35e-02 38.220 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 -1.289 -0.164 0.164 - - - 1.19e-02 -1.21e-03 1.21e-03 60.020 57
CPL -0.561 -0.671 0.802 100.261 -29.633 420.080 2.76e-02 -1.47e-02 4.04e-02 56.550 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 8.45e-08 1.67e-07 2.57e-07 8.63e-07 7.18e-07 1.37e-06 erg/cm2
90%_error_low -8.87e-09 -1.13e-08 -2.11e-08 -1.40e-07 -5.21e-08 -1.58e-07 erg/cm2
90%_error_hi 9.10e-09 1.12e-08 2.11e-08 1.56e-07 5.26e-08 1.72e-07 erg/cm2
Peak flux PL 3.99e-01 4.55e-01 3.72e-01 5.10e-01 1.41e+00 1.74e+00 ph/cm2/s
90%_error_low -6.67e-02 -4.97e-02 -4.61e-02 -1.17e-01 -1.43e-01 -1.85e-01 ph/cm2/s
90%_error_hi 6.98e-02 4.92e-02 4.57e-02 1.36e-01 1.43e-01 1.88e-01 ph/cm2/s
Fluence CPL 6.81e-08 1.89e-07 2.75e-07 1.97e-07 6.57e-07 7.29e-07 erg/cm2
90%_error_low -1.07e-08 -1.44e-08 -2.49e-08 -7.49e-08 -5.56e-08 -9.10e-08 erg/cm2
90%_error_hi 1.09e-08 1.47e-08 2.51e-08 1.24e-07 5.67e-08 1.30e-07 erg/cm2
Peak flux CPL 3.51e-01 4.90e-01 3.98e-01 2.40e-01 1.38e+00 1.48e+00 ph/cm2/s
90%_error_low -8.02e-02 -5.99e-02 -5.34e-02 -1.18e-01 -1.46e-01 -1.91e-01 ph/cm2/s
90%_error_hi 8.20e-02 6.20e-02 5.49e-02 2.43e-01 1.46e-01 2.61e-01 ph/cm2/s
======================================================================
Special notes of this burst