batgrbproduct Analysis for Trigger=566561
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): Sat Aug 17 07:18:40 EDT 2013
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger566561/GCN5_download_cron
======================================================================
Trigger: 00566561 Segment: 000
BAT Trigger Time: 398321629.504 [s; MET]
Trigger Stop: 398321630.528 [s; MET]
UTC: 2013-08-16T04:53:38.587620 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 170.092535443697 Dec: -57.5581832376266 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 10.39
Image Trigger?: NO
Rate S/N Ratio: 16.062378404209 [ if not an image trigger ]
Image S/N Ratio: 10.39
Flight Position: [ source = BAT ]
RA: 170.092535443697 Dec: -57.5581832376266 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 170.049194718543 Dec: -57.5271316237446 [deg; J2000]
{ 11h 20m 11.8s , -57d 31' 37.7" }
+/- 1.56922737593999 [arcmin] (estimated 90% radius based on SNR)
+/- 0.543544275168775 [arcmin] (formal 1-sigma fit error)
SNR: 15.9796450607505
Angular difference between Flight and Ground position is 2.327828 arcmin
Partial Coding Fraction: 0.984375 [ including projection effects ]
Duration
T90: 10 +/- 3.60555127546399
Measured from: -5.50399988889694
to: 4.49600011110306 [s; relative to TRIGTIME]
T50: 3 +/- 1
Measured from: -2.50399988889694
to: 0.496000111103058 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.495999991893768
to: 1.49599999189377 [s; relative to TRIGTIME]
Total Fluence
Measured from: -6.50400000810623
to: 6.49599999189377 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.189133 0.260077 0.116704 0.006290
0.018709 0.019208 0.016676 0.014512 [error]
Peak 0.035666 0.049197 0.027847 0.001043
0.005556 0.005684 0.004799 0.004214 [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 5.86e-08 8.88e-08 1.01e-07 2.18e-07 3.13e-07 4.66e-07 erg/cm2
Error 7.93e-09 8.40e-09 1.53e-08 6.56e-08 3.60e-08 8.19e-08 erg/cm2
Peak flux Power-law 3.34e-01 2.98e-01 1.82e-01 1.70e-01 8.86e-01 9.84e-01 ph/cm2/s
Error 6.85e-02 4.25e-02 3.74e-02 6.60e-02 1.26e-01 1.44e-01 ph/cm2/s
Fluence Cutoff-PL 5.19e-08 1.04e-07 9.41e-08 3.24e-08 2.74e-07 2.82e-07 erg/cm2
Error 9.12e-09 1.23e-08 1.98e-08 4.54e-08 3.90e-08 5.57e-08 erg/cm2
Peak flux Cutoff-PL 2.89e-01 3.70e-01 1.66e-01 1.88e-02 8.42e-01 8.44e-01 ph/cm2/s
Error 7.71e-02 6.53e-02 5.35e-02 3.72e-02 1.27e-01 1.29e-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 1.818 0.168 - - 2.62e-03 2.94e-04 44.980 57
CPL 0.451 0.930 47.3 10.8 1.59e-02 3.19e-02 35.980 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.706 0.234 - - 6.66e-03 1.07e-03 50.220 57
CPL -0.209 1.524 46.1 13.4 9.08e-02 5.57e-01 42.850 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: 5.696000 sec.
T50 in the 50-300 keV band: 3.264000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 13.000 -6.504 6.496
T90 10.000 -5.504 4.496
T50 3.000 -2.504 0.496
Peak 1.000 0.496 1.496
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
170.0492 -57.5271 0.0120 14.2 -131.4 0.5781 16.0 TRIG_00566561
------------------------------------------
Foreground time interval of the image:
-6.504 6.496 (delta_t = 13.000 [sec])
Background time interval of the image:
-191.703 -148.184 (delta_t = 43.519 [sec])
-147.504 -6.504 (delta_t = 141.000 [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 -6.504 sec. to 6.496 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.81801 ( -0.164339 0.170958 )
Norm@50keV : 2.61982E-03 ( -0.000296597 0.000292155 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 44.98 using 59 PHA bins.
# Reduced chi-squared = 0.7892 for 57 degrees of freedom
# Null hypothesis probability = 8.753812e-01
Photon flux (15-150 keV) in 13 sec: 0.363557 ( -0.0344075 0.0344128 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.13369e-07 ( -3.56065e-08 3.63278e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -6.504 sec. to 6.496 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.451269 ( -1.03411 0.82579 )
Epeak [keV] : 47.3351 ( -7.30408 14.375 )
Norm@50keV : 1.59313E-02 ( -0.0159314 0.0477963 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 35.98 using 59 PHA bins.
# Reduced chi-squared = 0.6425 for 56 degrees of freedom
# Null hypothesis probability = 9.828058e-01
Photon flux (15-150 keV) in 13 sec: 0.345949 ( -0.035495 0.035687 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.74413e-07 ( -3.73035e-08 4.0651e-08 ) ergs/cm2
Band function
Time interval is from -6.504 sec. to 6.496 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.451881 ( -0.752149 0.915979 )
beta : -10.0000 ( 10 1.77636e-15 )
Epeak [keV] : 47.3343 ( -7.26432 14.3623 )
Norm@50keV : 1.59173E-02 ( -0.0159173 0.0478859 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 35.98 using 59 PHA bins.
# Reduced chi-squared = 0.6541 for 55 degrees of freedom
# Null hypothesis probability = 9.779547e-01
Photon flux (15-150 keV) in 13 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] : 10.8440 (-1.07558 1.2139)
R^2/D10^2 : 0.130875 (-0.0429731 0.062568)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 44.49 using 59 PHA bins.
# Reduced chi-squared = 0.7805 for 57 degrees of freedom
# Null hypothesis probability = 8.862706e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.168e-08 6.565e-09
25- 50 1.157e-07 1.317e-08
50-150 7.600e-08 1.828e-08
15-150 2.334e-07 2.704e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 85.7721 (-23.2598 40.063)
Norm : 1.68811 (-0.216726 0.256748)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 38.81 using 59 PHA bins.
# Reduced chi-squared = 0.6809 for 57 degrees of freedom
# Null hypothesis probability = 9.688617e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.716e-08 7.976e-09
25- 50 9.564e-08 9.561e-09
50-150 1.413e-07 6.093e-08
15-150 2.941e-07 6.702e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.30720 (-3.18179 2.47626)
R1^2/D10^2 : 0.358375 (-0.194789 1.52703)
kT2 [keV] : 18.7600 (-14.6343 25.7126)
R2^2/D10^2 : 9.99634E-03 (-0.00962666 0.0563169)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 35.59 using 59 PHA bins.
# Reduced chi-squared = 0.6470 for 55 degrees of freedom
# Null hypothesis probability = 9.804445e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.072e-08 2.778e-08
25- 50 1.050e-07 5.355e-08
50-150 1.230e-07 6.637e-08
15-150 2.787e-07 1.237e-07
Peak spectrum fit
Power-law model
Time interval is from 0.496 sec. to 1.496 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.70641 ( -0.229796 0.237466 )
Norm@50keV : 6.65779E-03 ( -0.00107883 0.00106238 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.22 using 59 PHA bins.
# Reduced chi-squared = 0.8811 for 57 degrees of freedom
# Null hypothesis probability = 7.252451e-01
Photon flux (15-150 keV) in 1 sec: 0.886213 ( -0.126104 0.126125 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.16168e-08 ( -1.02977e-08 1.05746e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.496 sec. to 1.496 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.209217 ( -1.77008 1.27738 )
Epeak [keV] : 46.1462 ( -8.16175 18.6711 )
Norm@50keV : 9.08341E-02 ( -0.0915861 1.02312 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.85 using 59 PHA bins.
# Reduced chi-squared = 0.7651 for 56 degrees of freedom
# Null hypothesis probability = 9.017838e-01
Photon flux (15-150 keV) in 1 sec: 0.842312 ( -0.12585 0.127179 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.09262e-08 ( -9.8038e-09 1.15073e-08 ) ergs/cm2
Band function
Time interval is from 0.496 sec. to 1.496 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.86118 ( -4.35367 -4.86118 )
beta : -2.40260 ( -0.615685 0.441209 )
Epeak [keV] : 31.4838 ( -5.50171 4.22694 )
Norm@50keV : 192.670 ( -26.3292 570.297 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 39.21 using 59 PHA bins.
# Reduced chi-squared = 0.7129 for 55 degrees of freedom
# Null hypothesis probability = 9.468350e-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] : 10.8865 (-1.51062 1.81319)
R^2/D10^2 : 0.328297 (-0.144401 0.24481)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 44.89 using 59 PHA bins.
# Reduced chi-squared = 0.7876 for 57 degrees of freedom
# Null hypothesis probability = 8.774624e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.112e-09 2.224e-09
25- 50 2.263e-08 4.300e-09
50-150 1.503e-08 5.066e-09
15-150 4.578e-08 8.310e-09
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 100.535 (-38.2122 97.8636)
Norm : 3.98471 (-0.689231 0.858196)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.70 using 59 PHA bins.
# Reduced chi-squared = 0.8194 for 57 degrees of freedom
# Null hypothesis probability = 8.329527e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.041e-08 2.038e-09
25- 50 1.803e-08 3.420e-09
50-150 2.930e-08 1.587e-08
15-150 5.775e-08 1.856e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.16085 (-3.55004 3.136)
R1^2/D10^2 : 0.676721 (-0.595261 1.63249)
kT2 [keV] : 21.1363 (-11.8771 -22.1903)
R2^2/D10^2 : 1.37650E-02 (-0.0109882 0.148336)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.32 using 59 PHA bins.
# Reduced chi-squared = 0.7513 for 55 degrees of freedom
# Null hypothesis probability = 9.140717e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.427e-09 5.700e-09
25- 50 2.095e-08 1.202e-08
50-150 2.412e-08 1.374e-08
15-150 5.450e-08 2.823e-08
Plot creation:
Sat Aug 17 07:49:23 EDT 2013