batgrbproduct Analysis for Trigger=586289
Analysis Summary
Notes:
- 1) No attempt has been made to eliminate the non-significant decimal places.
- 2) This batgrbproduct analysis is done of the amount of data for this trigger downloaded to date.
- 3) This batgrbproduct analysis is using the flight position for the mask-weighting calculation.
- 4) This page will be updated for up to 10 downlinks after the trigger.
======================================================================
BAT GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.46
Process Start Time (local time): Wed Feb 12 07:35:36 EST 2014
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger586289/GCN5_download_cron
======================================================================
Trigger: 00586289 Segment: 000
BAT Trigger Time: 413814195.456 [s; MET]
Trigger Stop: 413814203.648 [s; MET]
UTC: 2014-02-11T12:23:03.824220 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 124.230447244537 Dec: 20.2436200277782 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 10.26
Image Trigger?: NO
Rate S/N Ratio: 13.228756555323 [ if not an image trigger ]
Image S/N Ratio: 10.26
Flight Position: [ source = BAT ]
RA: 124.230447244537 Dec: 20.2436200277782 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 124.23307913442 Dec: 20.2375518744706 [deg; J2000]
{ 08h 16m 55.9s , +20d 14' 15.2" }
+/- 1.41259624431638 [arcmin] (estimated 90% radius based on SNR)
+/- 0.680494741685383 [arcmin] (formal 1-sigma fit error)
SNR: 18.5697853583139
Angular difference between Flight and Ground position is 0.393081 arcmin
Partial Coding Fraction: 0.8125 [ including projection effects ]
Duration
T90: 108.379999935627 +/- 19.3391326480051
Measured from: -13.6479998230934
to: 94.7320001125336 [s; relative to TRIGTIME]
T50: 47.4999999403954 +/- 6.05316741067598
Measured from: 1.14000016450882
to: 48.6400001049042 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.904000043869019
to: 1.90400004386902 [s; relative to TRIGTIME]
Total Fluence
Measured from: -16.9519999623299
to: 108.024000048637 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.424304 1.359895 0.634790 0.106729
0.078090 0.079570 0.069279 0.062153 [error]
Peak 0.043316 0.028205 0.015248 0.005588
0.007205 0.007515 0.006434 0.005678 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
=== 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 Power-law 4.46e-07 5.67e-07 5.25e-07 8.55e-07 1.83e-06 2.39e-06 erg/cm2
Error 4.52e-08 3.90e-08 6.63e-08 2.15e-07 1.48e-07 2.86e-07 erg/cm2
Peak flux Power-law 3.78e-01 2.37e-01 9.54e-02 5.20e-02 7.37e-01 7.62e-01 ph/cm2/s
Error 1.05e-01 6.06e-02 4.48e-02 4.43e-02 1.73e-01 1.83e-01 ph/cm2/s
Fluence Cutoff-PL 4.30e-07 5.91e-07 5.12e-07 4.21e-07 1.75e-06 1.95e-06 erg/cm2
Error 5.11e-08 5.19e-08 7.42e-08 4.01e-07 1.81e-07 4.79e-07 erg/cm2
Peak flux Cutoff-PL 3.62e-01 2.85e-01 7.26e-02 4.58e-03 7.24e-01 7.24e-01 ph/cm2/s
Error 1.14e-01 8.32e-02 6.12e-02 3.41e-02 1.68e-01 1.69e-01 ph/cm2/s
Fluence Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 erg/cm2
Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 erg/cm2
Peak flux Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 ph/cm2/s
Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 ph/cm2/s
=== Time-averaged spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 2.109 0.140 - - 1.57e-03 1.41e-04 44.790 57
CPL 1.719 0.512 29.8 0.0 2.64e-03 0.00e+00 43.370 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 2.311 0.461 - - 4.19e-03 1.53e-03 55.310 57
CPL 0.622 2.719 28.2 0.0 5.19e-02 0.00e+00 52.960 56
Model : spectral model: simple power-law (PL) and cutoff power-law (CPL)
Ph_index : photon index: E^-{Ph_index} (minus sign is not included in the 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 PL model and at 1 keV in CPL model
Nomr_90err : 90% error of the normalization
chi2 : Chi-Squared
dof : degree of freedom
=== T90/T50 calculation in the 50-300 keV band (BATSE band) using 64 ms lc ===
T90 in the 50-300 keV band: 73.856000 sec.
T50 in the 50-300 keV band: 43.520000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 124.976 -16.952 108.024
T90 108.380 -13.648 94.732
T50 47.500 1.140 48.640
Peak 1.000 0.904 1.904
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
124.2331 +20.2376 0.0103 24.7 20.0 3.4609 18.6 TRIG_00586289
------------------------------------------
Foreground time interval of the image:
-16.952 108.024 (delta_t = 124.976 [sec])
Background time interval of the image:
-239.456 -57.395 (delta_t = 182.060 [sec])
-56.456 -16.952 (delta_t = 39.504 [sec])
Lightcurves
Notes:
- 1) All plots contain as much data as has been downloaded to date.
- 2) The mask-weighted light curves are using the flight position.
- 3) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
- 4) For all the mask-weighted lightcurves, the y-axis units are counts/sec/det where a det is 0.4 x 0.4 = 0.16 sq cm.
- 5) The verticle lines correspond to following: green dotted lines are T50 interval, black dotted lines are T90 interval, blue solid line(s) is a spacecraft slew start time, and orange solid line(s) is a spacecraft slew end time.
- 6) Time of each bin is in the middle of the bin.
1 s binning
From T0-310 s to T0+310 s
From T100_start - 20 s to T100_end + 30 s
Full time interval
64 ms binning
Full time interval
From T100_start to T100_end
From T0-5 sec to T0+5 sec
16 ms binning
From T100_start-5 s to T100_start+5 s
8 ms binning
From T100_start-3 s to T100_start+3 s
2 ms binning
From T100_start-1 s to T100_start+1 s
SN=5 or 10 sec. binning (whichever binning is satisfied first)
SN=5 or 10 sec. binning (T < 200 sec)
Spectra
Notes:
- 1) The fitting includes the systematic errors.
- 2) For long bursts, a spectral fit of the pre-slew DRM will introduce some errors in both a spectral shape and a normalization if the PHA file contains a lot of the slew/post-slew time interval.
- 3) For fits to more complicated models (e.g. a power-law over a cutoff power-law), the BAT team has decided to require a chi-square improvement of more than 6 for each extra dof.
- 4) For short bursts (T90<1sec), the specrtum is also fit with Blackbody, OTTB, and Double Blackbody.
Time averaged spectrum fit using the pre-slew DRM
Power-law model
Time interval is from -16.952 sec. to 108.024 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.10884 ( -0.137841 0.143137 )
Norm@50keV : 1.57194E-03 ( -0.000142267 0.000139941 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 44.79 using 59 PHA bins.
# Reduced chi-squared = 0.7857 for 57 degrees of freedom
# Null hypothesis probability = 8.798185e-01
Photon flux (15-150 keV) in 125 sec: 0.248390 ( -0.017168 0.0171836 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.82721e-06 ( -1.47323e-07 1.49641e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -16.952 sec. to 108.024 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.71869 ( -0.633878 0.390782 )
Epeak [keV] : 29.8039 ( )
Norm@50keV : 2.63717E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 43.37 using 59 PHA bins.
# Reduced chi-squared = 0.7744 for 56 degrees of freedom
# Null hypothesis probability = 8.912448e-01
Photon flux (15-150 keV) in 125 sec: 0.243363 ( -0.018506 0.018507 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.74899e-06 ( -1.77787e-07 1.84862e-07 ) ergs/cm2
Band function
Time interval is from -16.952 sec. to 108.024 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.72018 ( 1.76835 0.813705 )
beta : -10.00000 ( 10 3.55271e-15 )
Epeak [keV] : 29.7733 ( -8.78855 17.9525 )
Norm@50keV : 2.63081E-03 ( -0.000179262 0.00345693 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 43.37 using 59 PHA bins.
# Reduced chi-squared = 0.7885 for 55 degrees of freedom
# Null hypothesis probability = 8.715709e-01
Photon flux (15-150 keV) in 125 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 9.52189 (-0.788673 0.863994)
R^2/D10^2 : 0.132679 (-0.0383702 0.0539586)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 84.90 using 59 PHA bins.
# Reduced chi-squared = 1.489 for 57 degrees of freedom
# Null hypothesis probability = 9.685641e-03
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.006e-07 3.725e-08
25- 50 6.962e-07 5.125e-08
50-150 3.148e-07 6.606e-08
15-150 1.312e-06 1.132e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 56.7262 (-10.9216 14.7938)
Norm : 1.31445 (-0.160937 0.176386)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 44.51 using 59 PHA bins.
# Reduced chi-squared = 0.7808 for 57 degrees of freedom
# Null hypothesis probability = 8.858978e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.090e-07 4.050e-08
25- 50 6.115e-07 4.606e-08
50-150 6.635e-07 1.256e-07
15-150 1.684e-06 1.619e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.91052 (-1.1947 1.36989)
R1^2/D10^2 : 1.21714 (-0.72464 2.747)
kT2 [keV] : 16.0567 (-3.08061 5.39481)
R2^2/D10^2 : 1.28815E-02 (-0.00907385 0.0190748)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 45.10 using 59 PHA bins.
# Reduced chi-squared = 0.8199 for 55 degrees of freedom
# Null hypothesis probability = 8.271779e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.298e-07 1.594e-07
25- 50 5.768e-07 1.816e-07
50-150 6.612e-07 2.638e-07
15-150 1.668e-06 4.933e-07
Peak spectrum fit
Power-law model
Time interval is from 0.904 sec. to 1.904 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.31086 ( -0.420085 0.502667 )
Norm@50keV : 4.19134E-03 ( -0.00152608 0.00152395 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.31 using 59 PHA bins.
# Reduced chi-squared = 0.9704 for 57 degrees of freedom
# Null hypothesis probability = 5.386582e-01
Photon flux (15-150 keV) in 1 sec: 0.736911 ( -0.172807 0.173153 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.01309e-08 ( -1.17478e-08 1.2708e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.904 sec. to 1.904 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.621940 ( -4.04119 1.39688 )
Epeak [keV] : 28.1907 ( )
Norm@50keV : 5.19025E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.96 using 59 PHA bins.
# Reduced chi-squared = 0.9457 for 56 degrees of freedom
# Null hypothesis probability = 5.906274e-01
Photon flux (15-150 keV) in 1 sec: 0.723724 ( -0.166461 0.169521 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.51001e-08 ( -1.04268e-08 1.2771e-08 ) ergs/cm2
Band function
Time interval is from 0.904 sec. to 1.904 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -6.07888 -5 )
beta : -2.94309 ( -0.890124 0.713441 )
Epeak [keV] : 23.5638 ( -4.97218 4.62865 )
Norm@50keV : 1514.10 ( -337.683 5721.54 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.08 using 59 PHA bins.
# Reduced chi-squared = 0.9288 for 55 degrees of freedom
# Null hypothesis probability = 6.250370e-01
Photon flux (15-150 keV) in 1 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 7.24679 (-1.73245 2.38504)
R^2/D10^2 : 1.26276 (-0.855228 2.56498)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.57 using 59 PHA bins.
# Reduced chi-squared = 0.9574 for 57 degrees of freedom
# Null hypothesis probability = 5.667504e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.103e-08 5.499e-09
25- 50 1.614e-08 8.505e-09
50-150 3.026e-09 2.154e-09
15-150 3.019e-08 1.371e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 37.0546 (-15.5441 33.5071)
Norm : 5.15561 (-1.78607 3.07187)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.28 using 59 PHA bins.
# Reduced chi-squared = 0.9348 for 57 degrees of freedom
# Null hypothesis probability = 6.153053e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.152e-08 3.892e-09
25- 50 1.465e-08 6.152e-09
50-150 1.040e-08 7.346e-09
15-150 3.657e-08 1.499e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.11924 (-1.90189 2.78524)
R1^2/D10^2 : 3.59673 (-1.80318 20.5859)
kT2 [keV] : 13.7389 (-6.55564 -13.7264)
R2^2/D10^2 : 5.26677E-02 (-0.0552645 1.25526)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.86 using 59 PHA bins.
# Reduced chi-squared = 0.9430 for 55 degrees of freedom
# Null hypothesis probability = 5.951701e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.171e-08 7.000e-09
25- 50 1.432e-08 8.010e-09
50-150 9.750e-09 6.625e-09
15-150 3.578e-08 2.003e-08
Plot creation:
Wed Feb 12 08:11:16 EST 2014