batgrbproduct Analysis for Trigger=690589
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): Sun Jun 12 15:32:48 EDT 2016
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger690589/GCN5_download_cron
======================================================================
Trigger: 00690589 Segment: 000
BAT Trigger Time: 487368520 [s; MET]
Trigger Stop: 487369672 [s; MET]
UTC: 2016-06-11T20:08:23.597840 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 266.583404251709 Dec: -28.9996980890775 [deg; J2000]
Catalogged Source?: YES
Point Source?: YES
GRB Indicated?: NO [ by BAT flight software ]
Image S/N Ratio: 10.71
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 10.71
Flight Position: [ source = BAT ]
RA: 266.583404251709 Dec: -28.9996980890775 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 266.575403710908 Dec: -28.9978864094011 [deg; J2000]
{ 17h 46m 18.1s , -28d 59' 52.4" }
+/- 2.56326691221095 [arcmin] (estimated 90% radius based on SNR)
+/- 1.01155444865499 [arcmin] (formal 1-sigma fit error)
SNR: 7.92733464911727
Angular difference between Flight and Ground position is 0.433694 arcmin
Partial Coding Fraction: 1.015625 [ including projection effects ]
Duration
T90: 1152 +/-
Measured from: 0
to: 1152 [s; relative to TRIGTIME]
T50: 1152 +/-
Measured from: 0
to: 1152 [s; relative to TRIGTIME]
WARNING: battblocks failed. Used TDRSS fore/background intervals
Fluence
Peak Flux (peak 1152 second)
Measured from: 0
to: 1152 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0
to: 1152 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 2.080287 2.785754 1.550387 0.193493
0.191258 0.173296 0.147851 0.136578 [error]
Peak 2.080287 2.785754 1.550387 0.193493
0.191258 0.173296 0.147851 0.136578 [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 6.33e-07 1.03e-06 1.26e-06 3.03e-06 3.78e-06 5.95e-06 erg/cm2
Error 8.04e-08 7.94e-08 1.44e-07 7.37e-07 3.33e-07 8.57e-07 erg/cm2
Peak flux Power-law 2.13e-02 1.90e-02 1.16e-02 1.08e-02 5.65e-02 6.27e-02 ph/cm2/s
Error 2.76e-03 1.49e-03 1.28e-03 2.43e-03 4.40e-03 4.81e-03 ph/cm2/s
Fluence Cutoff-PL 6.06e-07 1.06e-06 1.26e-06 1.71e-06 3.64e-06 4.63e-06 erg/cm2
Error 9.35e-08 1.03e-07 1.52e-07 1.48e-06 4.12e-07 1.72e-06 erg/cm2
Peak flux Cutoff-PL 2.03e-02 1.96e-02 1.17e-02 6.90e-03 5.54e-02 5.85e-02 ph/cm2/s
Error 3.26e-03 1.86e-03 1.35e-03 4.81e-03 4.79e-03 7.21e-03 ph/cm2/s
Fluence Band 5.69e-07 1.10e-06 1.21e-06 2.32e-06 3.63e-06 5.25e-06 erg/cm2
Error -------- -------- 1.58e-07 -------- -------- -------- erg/cm2
Peak flux Band -------- -------- -------- -------- -------- -------- ph/cm2/s
Error -------- -------- -------- -------- -------- -------- ph/cm2/s
=== Time-averaged spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.707 0.145 - - 4.24e-04 3.54e-05 44.960 57
CPL 1.372 0.584 85.4 -26.9 6.43e-04 5.40e-04 44.020 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.707 0.145 - - 4.24e-04 3.54e-05 44.960 57
CPL 1.372 0.584 85.4 -26.9 6.43e-04 5.40e-04 44.020 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 1152.000 0.000 1152.000
T90 1152.000 0.000 1152.000
T50 1152.000 0.000 1152.000
Peak 1152.000 0.000 1152.000
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
266.5754 -28.9979 0.0243 9.4 16.9 6.6126 7.9 TRIG_00690589
------------------------------------------
Foreground time interval of the image:
0.000 700.684 (delta_t = 700.684 [sec])
702.000 963.055 (delta_t = 261.055 [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 700.684200
702.000000 963.055300
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.70665 ( -0.143457 0.145717 )
Norm@50keV : 4.24491E-04 ( -3.55511e-05 3.51792e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 44.96 using 59 PHA bins.
# Reduced chi-squared = 0.7887 for 57 degrees of freedom
# Null hypothesis probability = 8.760077e-01
Photon flux (15-150 keV) in 961.7 sec: 5.65086E-02 ( -0.00439715 0.00440443 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.77781e-06 ( -3.31306e-07 3.35653e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
0.000000 700.684200
702.000000 963.055300
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.37212 ( -0.674364 0.493307 )
Epeak [keV] : 85.4219 ( -31.5748 -85.4322 )
Norm@50keV : 6.42988E-04 ( -0.000246641 0.000832427 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 44.02 using 59 PHA bins.
# Reduced chi-squared = 0.7861 for 56 degrees of freedom
# Null hypothesis probability = 8.769982e-01
Photon flux (15-150 keV) in 961.7 sec: 5.54227E-02 ( -0.0047975 0.0047756 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.63742e-06 ( -4.1205e-07 4.12771e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
0.000000 700.684200
702.000000 963.055300
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.592113 ( 0.505808 2.22858 )
beta : -1.92049 ( -2.95283 0.276801 )
Epeak [keV] : 45.8342 ( -44.8797 378.563 )
Norm@50keV : 2.02563E-03 ( -0.00236966 0.993529 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.36 using 59 PHA bins.
# Reduced chi-squared = 0.7703 for 55 degrees of freedom
# Null hypothesis probability = 8.937790e-01
Photon flux (15-150 keV) in 961.7 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 3.62954e-06 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 11.9434 (-1.09481 1.25097)
R^2/D10^2 : 1.35878E-02 (-0.0042074 0.00588545)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 73.38 using 59 PHA bins.
# Reduced chi-squared = 1.287 for 57 degrees of freedom
# Null hypothesis probability = 7.088353e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.941e-07 5.501e-08
25- 50 1.233e-06 1.101e-07
50-150 1.055e-06 2.066e-07
15-150 2.682e-06 2.404e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 131.615 (-40.8174 64.3085)
Norm : 0.232973 (-0.0216092 0.0296808)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 44.13 using 59 PHA bins.
# Reduced chi-squared = 0.7742 for 57 degrees of freedom
# Null hypothesis probability = 8.937276e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.809e-07 7.025e-08
25- 50 1.055e-06 1.524e-07
50-150 1.968e-06 8.127e-07
15-150 3.604e-06 9.809e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.33777 (-1.66606 1.59039)
R1^2/D10^2 : 3.99658E-02 (-0.0171388 0.0395878)
kT2 [keV] : 35.1167 (-13.3594 78.9741)
R2^2/D10^2 : 1.99568E-04 (-0.000181558 0.000865007)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.66 using 59 PHA bins.
# Reduced chi-squared = 0.7757 for 55 degrees of freedom
# Null hypothesis probability = 8.874743e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.308e-07 1.227e-07
25- 50 1.153e-06 3.024e-07
50-150 2.044e-06 9.667e-07
15-150 3.727e-06 1.210e-06
Peak spectrum fit
Power-law model
Time interval is from 702.000 sec. to 963.055 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.70665 ( -0.143457 0.145717 )
Norm@50keV : 4.24491E-04 ( -3.55511e-05 3.51792e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 44.96 using 59 PHA bins.
# Reduced chi-squared = 0.7887 for 57 degrees of freedom
# Null hypothesis probability = 8.760077e-01
Photon flux (15-150 keV) in 961.7 sec: 5.65086E-02 ( -0.00439715 0.00440443 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.77781e-06 ( -3.31306e-07 3.35653e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 702.000 sec. to 963.055 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.37212 ( -0.674364 0.493307 )
Epeak [keV] : 85.4219 ( -31.5748 -85.4322 )
Norm@50keV : 6.42988E-04 ( -0.000246641 0.000832427 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 44.02 using 59 PHA bins.
# Reduced chi-squared = 0.7861 for 56 degrees of freedom
# Null hypothesis probability = 8.769982e-01
Photon flux (15-150 keV) in 961.7 sec: 5.54227E-02 ( -0.0047975 0.0047756 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.63742e-06 ( -4.1205e-07 4.12771e-07 ) ergs/cm2
Band function
Time interval is from 702.000 sec. to 963.055 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.581992 ( 0.668141 3.64426 )
beta : -1.92554 ( 1.92624 0.266707 )
Epeak [keV] : 45.8398 ( -45.3231 349.704 )
Norm@50keV : 2.05127E-03 ( -0.00229499 1.18906 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.36 using 59 PHA bins.
# Reduced chi-squared = 0.7702 for 55 degrees of freedom
# Null hypothesis probability = 8.938766e-01
Photon flux (15-150 keV) in 961.7 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 3.62954e-06 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 11.9434 (-1.09481 1.25097)
R^2/D10^2 : 1.35878E-02 (-0.0042074 0.00588545)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 73.38 using 59 PHA bins.
# Reduced chi-squared = 1.287 for 57 degrees of freedom
# Null hypothesis probability = 7.088353e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.941e-07 5.381e-08
25- 50 1.233e-06 1.168e-07
50-150 1.055e-06 1.993e-07
15-150 2.682e-06 2.558e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 131.615 (-40.8174 64.3085)
Norm : 0.232973 (-0.0216092 0.0296808)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 44.13 using 59 PHA bins.
# Reduced chi-squared = 0.7742 for 57 degrees of freedom
# Null hypothesis probability = 8.937276e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.809e-07 6.544e-08
25- 50 1.055e-06 1.605e-07
50-150 1.968e-06 8.389e-07
15-150 3.604e-06 9.973e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.33777 (-1.66606 1.59039)
R1^2/D10^2 : 3.99658E-02 (-0.0171388 0.0395878)
kT2 [keV] : 35.1167 (-13.3594 78.9741)
R2^2/D10^2 : 1.99568E-04 (-0.000181558 0.000865007)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.66 using 59 PHA bins.
# Reduced chi-squared = 0.7757 for 55 degrees of freedom
# Null hypothesis probability = 8.874743e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.308e-07 1.274e-07
25- 50 1.153e-06 2.942e-07
50-150 2.044e-06 9.707e-07
15-150 3.727e-06 1.218e-06
Plot creation:
Sun Jun 12 15:37:34 EDT 2016