batgrbproduct Analysis for Trigger=600914
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): Fri Jun 6 10:31:54 EDT 2014
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger600914/GCN5_download_cron
======================================================================
Trigger: 00600914 Segment: 000
BAT Trigger Time: 423702424 [s; MET]
Trigger Stop: 423702488 [s; MET]
UTC: 2014-06-05T23:06:51.897560 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 29.3933238102915 Dec: 44.9767806908176 [deg; J2000]
Catalogged Source?: YES
Point Source?: YES
GRB Indicated?: NO [ by BAT flight software ]
Image S/N Ratio: 5.99
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 5.99
Flight Position: [ source = BAT ]
RA: 29.3933238102915 Dec: 44.9767806908176 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 29.3387098060617 Dec: 44.9574821885828 [deg; J2000]
{ 01h 57m 21.3s , +44d 57' 26.9" }
+/- 3.8460497984572 [arcmin] (estimated 90% radius based on SNR)
+/- 3.40038066862673 [arcmin] (formal 1-sigma fit error)
SNR: 4.43999830215369
Angular difference between Flight and Ground position is 2.591478 arcmin
Partial Coding Fraction: 0.4101562 [ 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 0.165182 0.238559 0.005396 0.051276
0.073554 0.076396 0.067725 0.061297 [error]
Peak 0.165182 0.238559 0.005396 0.051276
0.073554 0.076396 0.067725 0.061297 [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 6.02e-08 6.90e-08 5.61e-08 7.51e-08 2.13e-07 2.68e-07 erg/cm2
Error 3.67e-08 3.83e-08 5.55e-08 1.38e-07 1.30e-07 2.03e-07 erg/cm2
Peak flux Power-law 3.17e-02 1.95e-02 7.82e-03 4.30e-03 6.09e-02 6.26e-02 ph/cm2/s
Error 1.91e-02 1.07e-02 7.75e-03 7.29e-03 3.20e-02 3.35e-02 ph/cm2/s
Fluence Cutoff-PL 3.33e-08 1.26e-07 4.90e-08 5.02e-10 2.10e-07 2.08e-07 erg/cm2
Error 4.12e-08 6.00e-08 5.68e-08 1.34e-08 1.01e-07 1.01e-07 erg/cm2
Peak flux Cutoff-PL 1.58e-02 3.46e-02 7.90e-03 4.50e-05 5.83e-02 5.87e-02 ph/cm2/s
Error 2.07e-02 1.62e-02 8.66e-03 1.02e-03 3.07e-02 3.07e-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 2.297 0.943 - - 3.49e-04 2.42e-04 76.510 57
CPL -1.876 0.792 37.9 0.0 9.00e-02 0.00e+00 72.080 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 2.297 0.943 - - 3.49e-04 2.42e-04 76.510 57
CPL -1.876 0.792 37.9 0.0 9.00e-02 0.00e+00 72.080 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
29.3387 +44.9575 0.0432 43.9 -158.7 0.6508 4.4 TRIG_00600914
------------------------------------------
Foreground time interval of the image:
0.000 64.000 (delta_t = 64.000 [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
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.29716 ( -0.788485 1.09698 )
Norm@50keV : 3.49201E-04 ( -0.000238005 0.000246499 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 76.51 using 59 PHA bins.
# Reduced chi-squared = 1.342 for 57 degrees of freedom
# Null hypothesis probability = 4.329675e-02
Photon flux (15-150 keV) in 64 sec: 6.09127E-02 ( -0.0320022 0.0320056 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.12701e-07 ( -1.21728e-07 1.38225e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.87631 ( 3.21923 4.80267 )
Epeak [keV] : 37.8863 ( )
Norm@50keV : 8.99608E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 72.08 using 59 PHA bins.
# Reduced chi-squared = 1.287 for 56 degrees of freedom
# Null hypothesis probability = 7.273064e-02
Photon flux (15-150 keV) in 64 sec: 5.83219E-02 ( -0.0298487 0.0315014 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.10268e-07 ( -9.84122e-08 1.03732e-07 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.71368 ( -6.00813 -4.71368 )
beta : -9.37167 ( 9.37167 19.3455 )
Epeak [keV] : 39.9263 ( -10.5245 11.3813 )
Norm@50keV : 3.11581 ( -1.35769 28.1357 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 72.07 using 59 PHA bins.
# Reduced chi-squared = 1.310 for 55 degrees of freedom
# Null hypothesis probability = 6.096768e-02
Photon flux (15-150 keV) in 64 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] : 9.75667 (-3.00235 3.80467)
R^2/D10^2 : 3.85817E-02 (-0.0388926 0.120151)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 72.36 using 59 PHA bins.
# Reduced chi-squared = 1.269 for 57 degrees of freedom
# Null hypothesis probability = 8.265019e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.745e-08 3.162e-08
25- 50 1.139e-07 7.562e-08
50-150 5.532e-08 4.506e-08
15-150 2.167e-07 1.423e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 39.3479 (-22.8178 93.3372)
Norm : 0.432972 (-0.251098 0.5279)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 74.82 using 59 PHA bins.
# Reduced chi-squared = 1.313 for 57 degrees of freedom
# Null hypothesis probability = 5.678373e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.328e-08 4.176e-08
25- 50 8.266e-08 5.450e-08
50-150 6.280e-08 5.162e-08
15-150 2.087e-07 1.485e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 9.71849 (-9.72551 -9.72551)
R1^2/D10^2 : 2.74360E-02 (-0.0273793 -0.0273793)
kT2 [keV] : 9.73003 (-9.72967 -9.72967)
R2^2/D10^2 : 1.16986E-02 (-0.0116403 -0.0116403)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 72.36 using 59 PHA bins.
# Reduced chi-squared = 1.316 for 55 degrees of freedom
# Null hypothesis probability = 5.829297e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.772e-08 3.163e+00
25- 50 1.139e-07 2.460e+01
50-150 5.478e-08 6.470e+02
15-150 2.164e-07 5.619e+02
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.29716 ( -0.788485 1.09698 )
Norm@50keV : 3.49201E-04 ( -0.000238005 0.000246499 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 76.51 using 59 PHA bins.
# Reduced chi-squared = 1.342 for 57 degrees of freedom
# Null hypothesis probability = 4.329675e-02
Photon flux (15-150 keV) in 64 sec: 6.09127E-02 ( -0.0320022 0.0320056 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.12701e-07 ( -1.21728e-07 1.38225e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.87631 ( 3.21923 4.80267 )
Epeak [keV] : 37.8863 ( )
Norm@50keV : 8.99608E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 72.08 using 59 PHA bins.
# Reduced chi-squared = 1.287 for 56 degrees of freedom
# Null hypothesis probability = 7.273064e-02
Photon flux (15-150 keV) in 64 sec: 5.83219E-02 ( -0.0298487 0.0315014 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.10268e-07 ( -9.84122e-08 1.03732e-07 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.71368 ( -6.00813 -4.71368 )
beta : -9.37167 ( 9.37167 19.3455 )
Epeak [keV] : 39.9263 ( -10.5245 11.3813 )
Norm@50keV : 3.11581 ( -1.35769 28.1357 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 72.07 using 59 PHA bins.
# Reduced chi-squared = 1.310 for 55 degrees of freedom
# Null hypothesis probability = 6.096768e-02
Photon flux (15-150 keV) in 64 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] : 9.75667 (-3.00235 3.80467)
R^2/D10^2 : 3.85817E-02 (-0.0388926 0.120151)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 72.36 using 59 PHA bins.
# Reduced chi-squared = 1.269 for 57 degrees of freedom
# Null hypothesis probability = 8.265019e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.745e-08 3.139e-08
25- 50 1.139e-07 7.581e-08
50-150 5.532e-08 4.285e-08
15-150 2.167e-07 1.530e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 39.3479 (-22.8178 93.3372)
Norm : 0.432972 (-0.251098 0.5279)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 74.82 using 59 PHA bins.
# Reduced chi-squared = 1.313 for 57 degrees of freedom
# Null hypothesis probability = 5.678373e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.328e-08 4.070e-08
25- 50 8.266e-08 5.875e-08
50-150 6.280e-08 5.482e-08
15-150 2.087e-07 1.462e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 9.71849 (-9.72551 -9.72551)
R1^2/D10^2 : 2.74360E-02 (-0.0273793 -0.0273793)
kT2 [keV] : 9.73003 (-9.72967 -9.72967)
R2^2/D10^2 : 1.16986E-02 (-0.0116403 -0.0116403)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 72.36 using 59 PHA bins.
# Reduced chi-squared = 1.316 for 55 degrees of freedom
# Null hypothesis probability = 5.829297e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.772e-08 3.029e+00
25- 50 1.139e-07 2.742e+01
50-150 5.478e-08 6.592e+02
15-150 2.164e-07 6.045e+02
Plot creation:
Fri Jun 6 10:36:14 EDT 2014