batgrbproduct Analysis for Trigger=576064
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): Mon Oct 28 18:45:36 EDT 2013
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger576064/GCN5_download_cron
======================================================================
Trigger: 00576064 Segment: 000
BAT Trigger Time: 404631840 [s; MET]
Trigger Stop: 404631904 [s; MET]
UTC: 2013-10-28T05:43:48.796120 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 188.909392716996 Dec: 27.8497765907533 [deg; J2000]
Catalogged Source?: YES
Point Source?: YES
GRB Indicated?: NO [ by BAT flight software ]
Image S/N Ratio: 5.83
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 5.83
Flight Position: [ source = BAT ]
RA: 188.909392716996 Dec: 27.8497765907533 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 188.914885195028 Dec: 27.8108586614874 [deg; J2000]
{ 12h 35m 39.6s , +27d 48' 39.1" }
+/- 4.61342381104446 [arcmin] (estimated 90% radius based on SNR)
+/- 3.51140238189127 [arcmin] (formal 1-sigma fit error)
SNR: 3.4238410160551
Angular difference between Flight and Ground position is 2.353192 arcmin
Partial Coding Fraction: 1.015625 [ including projection effects ]
Duration
T90: 64 +/-
Measured from: 0
to: 64 [s; relative to TRIGTIME]
T50: 64 +/-
Measured from: 0
to: 64 [s; relative to TRIGTIME]
WARNING: battblocks failed. Used TDRSS fore/background intervals
Fluence
Peak Flux (peak 64 second)
Measured from: 0
to: 64 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0
to: 64 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.126833 0.133250 0.015890 0.012063
0.038571 0.039429 0.034324 0.029658 [error]
Peak 0.126833 0.133250 0.015890 0.012063
0.038571 0.039429 0.034324 0.029658 [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 2.71e-08 4.29e-08 5.13e-08 1.19e-07 1.56e-07 2.40e-07 erg/cm2
Error 1.44e-08 1.68e-08 3.04e-08 1.65e-07 7.37e-08 1.84e-07 erg/cm2
Peak flux Power-law 1.39e-02 1.21e-02 7.23e-03 6.50e-03 3.60e-02 3.97e-02 ph/cm2/s
Error 7.53e-03 4.73e-03 4.16e-03 8.34e-03 1.41e-02 1.60e-02 ph/cm2/s
Fluence Cutoff-PL 2.42e-08 5.99e-08 2.50e-08 6.84e-10 1.10e-07 1.10e-07 erg/cm2
Error 2.06e-08 2.79e-08 3.85e-08 7.24e-08 7.21e-08 1.57e-07 erg/cm2
Peak flux Cutoff-PL 1.20e-02 1.69e-02 3.99e-03 6.08e-05 3.29e-02 3.29e-02 ph/cm2/s
Error 9.06e-03 7.85e-03 5.46e-03 5.61e-03 1.36e-02 1.12e-02 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 1.743 0.692 - - 2.67e-04 1.22e-04 71.580 57
CPL -1.375 1.065 38.0 0.0 2.61e-02 0.00e+00 70.190 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.743 0.692 - - 2.67e-04 1.22e-04 71.580 57
CPL -1.375 1.062 38.0 0.0 2.61e-02 0.00e+00 70.190 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: 0.000000 sec.
T50 in the 50-300 keV band: 0.000000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 64.000 0.000 64.000
T90 64.000 0.000 64.000
T50 64.000 0.000 64.000
Peak 64.000 0.000 64.000
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
188.9149 +27.8109 0.0558 16.2 -156.2 0.2569 3.4 TRIG_00576064
------------------------------------------
Foreground time interval of the image:
0.000 57.210 (delta_t = 57.210 [sec])
58.000 64.000 (delta_t = 6.000 [sec])
Background time interval of the image:
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
Multiple GTIs in the spectrum
tstart tstop
0.000000 57.210000
58.000000 64.000000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.74292 ( -0.657962 0.726495 )
Norm@50keV : 2.66799E-04 ( -0.000124494 0.000119672 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.58 using 59 PHA bins.
# Reduced chi-squared = 1.256 for 57 degrees of freedom
# Null hypothesis probability = 9.253837e-02
Photon flux (15-150 keV) in 63.21 sec: 3.59819E-02 ( -0.0140753 0.0140753 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.55694e-07 ( -7.05228e-08 7.69689e-08 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
0.000000 57.210000
58.000000 64.000000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.37545 ( 1.44084 3.57067 )
Epeak [keV] : 37.9602 ( )
Norm@50keV : 2.61183E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 70.19 using 59 PHA bins.
# Reduced chi-squared = 1.253 for 56 degrees of freedom
# Null hypothesis probability = 9.621207e-02
Photon flux (15-150 keV) in 63.21 sec: 3.29428E-02 ( -0.0132038 0.0140202 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.09701e-07 ( -4.58127e-08 9.83181e-08 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
0.000000 57.210000
58.000000 64.000000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.33093 ( -4.23094 -4.23094 )
beta : -2.19547 ( 4.94243 7.66601 )
Epeak [keV] : 26.2337 ( -25.8716 38.5678 )
Norm@50keV : 10.0797 ( -10.0645 7.93945 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.66 using 59 PHA bins.
# Reduced chi-squared = 1.267 for 55 degrees of freedom
# Null hypothesis probability = 8.817576e-02
Photon flux (15-150 keV) in 63.21 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] : 9.65564 (-2.92196 4.6602)
R^2/D10^2 : 2.09625E-02 (-0.0209625 0.059774)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 70.19 using 59 PHA bins.
# Reduced chi-squared = 1.231 for 57 degrees of freedom
# Null hypothesis probability = 1.126474e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.484e-08 1.607e-08
25- 50 5.872e-08 3.831e-08
50-150 2.766e-08 2.171e-08
15-150 1.112e-07 7.215e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 86.7413 (-86.7413 -86.7413)
Norm : 0.167669 (-0.0732093 0.139126)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.13 using 59 PHA bins.
# Reduced chi-squared = 1.248 for 57 degrees of freedom
# Null hypothesis probability = 9.870777e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.762e-08 1.728e-08
25- 50 4.633e-08 3.045e-08
50-150 6.894e-08 5.781e-08
15-150 1.429e-07 1.052e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.94792 (-8.9437 4.42822)
R1^2/D10^2 : 2.62342E-02 (-0.0263048 0.177115)
kT2 [keV] : 198.502 (-198.939 -198.939)
R2^2/D10^2 : 2.81121E-06 (-2.89129e-06 -2.89129e-06)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.41 using 59 PHA bins.
# Reduced chi-squared = 1.262 for 55 degrees of freedom
# Null hypothesis probability = 9.140687e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.600e-08 1.674e-08
25- 50 5.620e-08 3.644e-08
50-150 6.712e-08 2.257e-08
15-150 1.493e-07 7.133e-08
Peak spectrum fit
Power-law model
Time interval is from 58.000 sec. to 64.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.74292 ( -0.657962 0.726495 )
Norm@50keV : 2.66799E-04 ( -0.000124494 0.000119672 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.58 using 59 PHA bins.
# Reduced chi-squared = 1.256 for 57 degrees of freedom
# Null hypothesis probability = 9.253837e-02
Photon flux (15-150 keV) in 63.21 sec: 3.59819E-02 ( -0.0140753 0.0140753 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.55694e-07 ( -7.05228e-08 7.69689e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 58.000 sec. to 64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.37545 ( 1.44084 3.56517 )
Epeak [keV] : 37.9602 ( )
Norm@50keV : 2.61183E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 70.19 using 59 PHA bins.
# Reduced chi-squared = 1.253 for 56 degrees of freedom
# Null hypothesis probability = 9.621207e-02
Photon flux (15-150 keV) in 63.21 sec: 3.29428E-02 ( -0.0132038 0.0140202 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.09701e-07 ( -4.58127e-08 9.83181e-08 ) ergs/cm2
Band function
Time interval is from 58.000 sec. to 64.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.33093 ( -4.23094 -4.23094 )
beta : -2.19547 ( 4.94243 7.66601 )
Epeak [keV] : 26.2337 ( -25.8716 38.5678 )
Norm@50keV : 10.0797 ( -10.0645 7.93955 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.66 using 59 PHA bins.
# Reduced chi-squared = 1.267 for 55 degrees of freedom
# Null hypothesis probability = 8.817576e-02
Photon flux (15-150 keV) in 63.21 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] : 9.65564 (-2.92196 4.6602)
R^2/D10^2 : 2.09625E-02 (-0.0209625 0.059774)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 70.19 using 59 PHA bins.
# Reduced chi-squared = 1.231 for 57 degrees of freedom
# Null hypothesis probability = 1.126474e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.484e-08 1.555e-08
25- 50 5.872e-08 3.758e-08
50-150 2.766e-08 2.319e-08
15-150 1.112e-07 7.228e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 86.7413 (-86.7413 -86.7413)
Norm : 0.167669 (-0.0732093 0.139126)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.13 using 59 PHA bins.
# Reduced chi-squared = 1.248 for 57 degrees of freedom
# Null hypothesis probability = 9.870777e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.762e-08 1.748e-08
25- 50 4.633e-08 3.108e-08
50-150 6.894e-08 6.233e-08
15-150 1.429e-07 1.040e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.94792 (-8.9437 4.42822)
R1^2/D10^2 : 2.62342E-02 (-0.0263048 0.176651)
kT2 [keV] : 198.502 (-198.939 -198.939)
R2^2/D10^2 : 2.81121E-06 (-2.89129e-06 -2.89129e-06)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.41 using 59 PHA bins.
# Reduced chi-squared = 1.262 for 55 degrees of freedom
# Null hypothesis probability = 9.140687e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.600e-08 1.656e-08
25- 50 5.620e-08 3.919e-08
50-150 6.712e-08 2.176e-08
15-150 1.493e-07 7.563e-08
Plot creation:
Mon Oct 28 19:06:30 EDT 2013