batgrbproduct Analysis for Trigger=565651
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): Thu Aug 8 04:30:05 EDT 2013
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger565651/GCN5_download_cron
======================================================================
Trigger: 00565651 Segment: 000
BAT Trigger Time: 397563954.176 [s; MET]
Trigger Stop: 397563955.2 [s; MET]
UTC: 2013-08-07T10:25:43.293700 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 269.801145760052 Dec: -27.6125375193907 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 9.29
Image Trigger?: NO
Rate S/N Ratio: 12.9614813968157 [ if not an image trigger ]
Image S/N Ratio: 9.29
Flight Position: [ source = BAT ]
RA: 269.801145760052 Dec: -27.6125375193907 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 269.801498880522 Dec: -27.6157596886094 [deg; J2000]
{ 17h 59m 12.4s , -27d 36' 56.7" }
+/- 1.74421850208952 [arcmin] (estimated 90% radius based on SNR)
+/- 0.698156688322673 [arcmin] (formal 1-sigma fit error)
SNR: 13.7396051718887
Angular difference between Flight and Ground position is 0.194240 arcmin
Partial Coding Fraction: 0.9296875 [ including projection effects ]
Duration
T90: 96 +/- 97.3242004847715
Measured from: -12.175999879837
to: 83.824000120163 [s; relative to TRIGTIME]
T50: 16 +/- 176
Measured from: -12.175999879837
to: 3.82400012016296 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -4.67599999904633
to: -3.67599999904633 [s; relative to TRIGTIME]
Total Fluence
Measured from: -12.1759999990463
to: 163.824000000954 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.505234 0.746991 0.659960 0.076095
0.079824 0.071280 0.059025 0.049614 [error]
Peak 0.011222 0.019524 0.015699 0.004603
0.006050 0.005522 0.004822 0.004062 [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 1.68e-07 3.17e-07 4.62e-07 1.44e-06 1.31e-06 2.38e-06 erg/cm2
Error 2.97e-08 3.41e-08 5.66e-08 3.82e-07 1.40e-07 4.21e-07 erg/cm2
Peak flux Power-law 9.26e-02 1.23e-01 1.20e-01 2.11e-01 4.05e-01 5.47e-01 ph/cm2/s
Error 5.90e-02 4.85e-02 3.75e-02 1.48e-01 1.28e-01 1.71e-01 ph/cm2/s
Fluence Cutoff-PL 1.33e-07 3.47e-07 4.94e-07 3.91e-07 1.21e-06 1.37e-06 erg/cm2
Error 3.70e-08 4.18e-08 6.62e-08 1.54e-07 3.83e-07 0.00e+00 erg/cm2
Peak flux Cutoff-PL 7.58e-02 1.29e-01 1.30e-01 9.93e-02 3.91e-01 4.34e-01 ph/cm2/s
Error 7.64e-02 5.56e-02 4.61e-02 1.36e-01 1.32e-01 1.89e-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 8.29e-01 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 1.456 0.170 - - 7.79e-04 7.70e-05 63.400 57
CPL 0.305 0.888 75.9 35.2 2.81e-03 3.41e-03 56.960 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.032 0.544 - - 3.51e-03 1.08e-03 55.810 57
CPL 0.223 6.143 121.5 0.0 8.24e-03 1.23e-01 55.410 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: 8.192000 sec.
T50 in the 50-300 keV band: 4.672000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 176.000 -12.176 163.824
T90 96.000 -12.176 83.824
T50 16.000 -12.176 3.824
Peak 1.000 -4.676 -3.676
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
269.8015 -27.6158 0.0141 24.8 -167.9 0.9921 13.7 TRIG_00565651
------------------------------------------
Foreground time interval of the image:
-12.176 17.325 (delta_t = 29.501 [sec])
Background time interval of the image:
-60.176 -12.176 (delta_t = 48.000 [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 -12.176 sec. to 163.824 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.45559 ( -0.169766 0.169382 )
Norm@50keV : 7.78724E-04 ( -7.7027e-05 7.69483e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.40 using 59 PHA bins.
# Reduced chi-squared = 1.112 for 57 degrees of freedom
# Null hypothesis probability = 2.610700e-01
Photon flux (15-150 keV) in 176 sec: 9.61002E-02 ( -0.0098851 0.00992727 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.3102e-06 ( -1.39248e-07 1.40302e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -12.176 sec. to 163.824 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.305001 ( -0.975343 0.800185 )
Epeak [keV] : 75.8701 ( -14.7564 55.6413 )
Norm@50keV : 2.81167E-03 ( -0.00163534 0.00517566 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.96 using 59 PHA bins.
# Reduced chi-squared = 1.017 for 56 degrees of freedom
# Null hypothesis probability = 4.390848e-01
Photon flux (15-150 keV) in 176 sec: 9.03222E-02 ( -0.0106632 0.0106788 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.20907e-06 ( -1.52571e-07 1.56061e-07 ) ergs/cm2
Band function
Time interval is from -12.176 sec. to 163.824 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.304947 ( -0.398399 0.743214 )
beta : -10.00000 ( 10 1.79279e-10 )
Epeak [keV] : 75.8550 ( -12.6617 55.6184 )
Norm@50keV : 2.81207E-03 ( -0.000273152 0.0051648 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.96 using 59 PHA bins.
# Reduced chi-squared = 1.036 for 55 degrees of freedom
# Null hypothesis probability = 4.019607e-01
Photon flux (15-150 keV) in 176 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] : 16.0330 (-1.67639 1.921)
R^2/D10^2 : 8.86868E-03 (-0.00293591 0.00426186)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.40 using 59 PHA bins.
# Reduced chi-squared = 1.130 for 57 degrees of freedom
# Null hypothesis probability = 2.335331e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.292e-08 1.588e-08
25- 50 3.496e-07 4.682e-08
50-150 6.285e-07 1.196e-07
15-150 1.061e-06 1.320e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 ( )
Norm : 0.398313 (-0.0389968 0.0389938)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.35 using 59 PHA bins.
# Reduced chi-squared = 1.076 for 57 degrees of freedom
# Null hypothesis probability = 3.228458e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.746e-07 5.498e-08
25- 50 3.358e-07 1.744e-07
50-150 7.366e-07 3.939e-07
15-150 1.247e-06 4.845e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.56236 (-2.45886 4.39794)
R1^2/D10^2 : 0.137194 (-0.115377 1.58749)
kT2 [keV] : 19.1786 (-2.98031 6.7085)
R2^2/D10^2 : 4.21645E-03 (-0.00307384 0.00389902)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.07 using 59 PHA bins.
# Reduced chi-squared = 1.019 for 55 degrees of freedom
# Null hypothesis probability = 4.346836e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.418e-07 7.025e-08
25- 50 3.332e-07 1.404e-07
50-150 7.060e-07 2.885e-07
15-150 1.181e-06 4.044e-07
Peak spectrum fit
Power-law model
Time interval is from -4.676 sec. to -3.676 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.03155 ( -0.57761 0.50948 )
Norm@50keV : 3.51441E-03 ( -0.00109458 0.00106881 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.81 using 59 PHA bins.
# Reduced chi-squared = 0.9792 for 57 degrees of freedom
# Null hypothesis probability = 5.196725e-01
Photon flux (15-150 keV) in 1 sec: 0.405414 ( -0.127011 0.129492 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.7586e-08 ( -1.1566e-08 1.17248e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -4.676 sec. to -3.676 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.222590 ( -3.40776 8.87821 )
Epeak [keV] : 121.549 ( -121.547 -121.547 )
Norm@50keV : 8.24260E-03 ( -0.00824332 0.236759 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.41 using 59 PHA bins.
# Reduced chi-squared = 0.9895 for 56 degrees of freedom
# Null hypothesis probability = 4.971365e-01
Photon flux (15-150 keV) in 1 sec: 0.390836 ( -0.12945 0.134872 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.56966e-08 ( -1.29791e-08 1.27484e-08 ) ergs/cm2
Band function
Time interval is from -4.676 sec. to -3.676 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.58156 ( -4.58156 -4.58156 )
beta : -1.35794 ( -0.950013 0.736666 )
Epeak [keV] : 40.3042 ( -40.3042 43.0056 )
Norm@50keV : 10.0547 ( -2.90933 1.1488e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.63 using 59 PHA bins.
# Reduced chi-squared = 0.9932 for 55 degrees of freedom
# Null hypothesis probability = 4.888254e-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] : 20.4839 (-6.46477 12.192)
R^2/D10^2 : 1.80543E-02 (-0.0180421 0.045737)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.37 using 59 PHA bins.
# Reduced chi-squared = 0.9889 for 57 degrees of freedom
# Null hypothesis probability = 4.988489e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.446e-09 9.260e-10
25- 50 7.318e-09 4.435e-09
50-150 2.283e-08 1.465e-08
15-150 3.159e-08 1.981e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.363 (-81.3192 -199.363)
Norm : 1.72735 (-0.532185 0.532216)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.40 using 59 PHA bins.
# Reduced chi-squared = 1.024 for 57 degrees of freedom
# Null hypothesis probability = 4.238657e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.301e-09 2.641e-09
25- 50 8.274e-09 5.155e-09
50-150 1.815e-08 1.110e-08
15-150 3.072e-08 1.873e-08
Double BB
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.37 using 59 PHA bins.
#Fit statistic : Chi-Squared = 55.12 using 59 PHA bins.
#Fit statistic : Chi-Squared = 54.98 using 59 PHA bins.
#Fit statistic : Chi-Squared = 54.93 using 59 PHA bins.
# Reduced chi-squared = 1.025 for 55 degrees of freedom
# Reduced chi-squared = 1.002 for 55 degrees of freedom
# Reduced chi-squared = 0.9996 for 55 degrees of freedom
# Reduced chi-squared = 0.9987 for 55 degrees of freedom
# Null hypothesis probability = 4.236334e-01
# Null hypothesis probability = 4.702133e-01
# Null hypothesis probability = 4.755692e-01
# Null hypothesis probability = 4.772778e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 0.000e+00 0.000e+00
25- 50 0.000e+00 0.000e+00
50-150 0.000e+00 0.000e+00
15-150 0.000e+00 0.000e+00
Plot creation:
Thu Aug 8 04:39:45 EDT 2013