batgrbproduct Analysis for Trigger=690197
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 10 12:19:38 EDT 2016
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger690197/GCN5_download_cron
======================================================================
Trigger: 00690197 Segment: 000
BAT Trigger Time: 487196896 [s; MET]
Trigger Stop: 487197280 [s; MET]
UTC: 2016-06-09T20:27:59.607320 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 266.390713227645 Dec: -28.9802412212592 [deg; J2000]
Catalogged Source?: YES
Point Source?: YES
GRB Indicated?: NO [ by BAT flight software ]
Image S/N Ratio: 7.73
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 7.73
Flight Position: [ source = BAT ]
RA: 266.390713227645 Dec: -28.9802412212592 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 266.375977215593 Dec: -28.9775179550145 [deg; J2000]
{ 17h 45m 30.2s , -28d 58' 39.1" }
+/- 2.85306570163322 [arcmin] (estimated 90% radius based on SNR)
+/- 1.13749223576078 [arcmin] (formal 1-sigma fit error)
SNR: 6.80256954065526
Angular difference between Flight and Ground position is 0.790533 arcmin
Partial Coding Fraction: 0.7890625 [ including projection effects ]
Duration
T90: 384 +/-
Measured from: 0
to: 384 [s; relative to TRIGTIME]
T50: 384 +/-
Measured from: 0
to: 384 [s; relative to TRIGTIME]
WARNING: battblocks failed. Used TDRSS fore/background intervals
Fluence
Peak Flux (peak 384 second)
Measured from: 0
to: 384 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0
to: 384 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.805046 0.836072 0.635656 0.255475
0.133268 0.127589 0.109874 0.102514 [error]
Peak 0.805046 0.836072 0.635656 0.255475
0.133268 0.127589 0.109874 0.102514 [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 2.13e-07 3.61e-07 4.65e-07 1.21e-06 1.37e-06 2.24e-06 erg/cm2
Error 5.41e-08 5.71e-08 1.08e-07 5.99e-07 2.54e-07 6.92e-07 erg/cm2
Peak flux Power-law 1.79e-02 1.67e-02 1.07e-02 1.07e-02 4.98e-02 5.60e-02 ph/cm2/s
Error 4.65e-03 2.68e-03 2.41e-03 4.89e-03 7.85e-03 8.95e-03 ph/cm2/s
Fluence Cutoff-PL 2.03e-07 3.74e-07 4.70e-07 7.10e-07 1.33e-06 1.76e-06 erg/cm2
Error 6.37e-08 7.04e-08 1.14e-07 9.26e-07 2.82e-07 9.17e-07 erg/cm2
Peak flux Cutoff-PL 1.70e-02 1.72e-02 1.09e-02 7.06e-03 4.90e-02 5.22e-02 ph/cm2/s
Error 5.52e-03 3.21e-03 2.59e-03 6.00e-03 8.32e-03 1.13e-02 ph/cm2/s
Fluence Band 2.05e-07 3.93e-07 5.14e-07 8.23e-07 1.43e-06 1.95e-06 erg/cm2
Error -------- -------- -------- -------- -------- -------- erg/cm2
Peak flux Band 1.72e-02 1.82e-02 1.20e-02 7.97e-03 5.17e-02 5.55e-02 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 1.635 0.292 - - 3.83e-04 6.56e-05 69.310 57
CPL 1.304 0.985 100.2 0.0 5.71e-04 0.00e+00 69.050 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.635 0.292 - - 3.83e-04 6.56e-05 69.310 57
CPL 1.304 0.985 100.2 0.0 5.71e-04 0.00e+00 69.050 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 384.000 0.000 384.000
T90 384.000 0.000 384.000
T50 384.000 0.000 384.000
Peak 384.000 0.000 384.000
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
266.3760 -28.9775 0.0284 17.1 55.4 2.3959 6.8 TRIG_00690197
------------------------------------------
Foreground time interval of the image:
0.000 384.000 (delta_t = 384.000 [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 384.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.63472 ( -0.286854 0.297135 )
Norm@50keV : 3.83139E-04 ( -6.63475e-05 6.48187e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.31 using 59 PHA bins.
# Reduced chi-squared = 1.216 for 57 degrees of freedom
# Null hypothesis probability = 1.270725e-01
Photon flux (15-150 keV) in 384 sec: 4.97795E-02 ( -0.00784771 0.00786109 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.37049e-06 ( -2.50578e-07 2.57113e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 384.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.30351 ( -1.36114 0.60962 )
Epeak [keV] : 100.189 ( -100.167 -100.167 )
Norm@50keV : 5.71427E-04 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.05 using 59 PHA bins.
# Reduced chi-squared = 1.233 for 56 degrees of freedom
# Null hypothesis probability = 1.130573e-01
Photon flux (15-150 keV) in 384 sec: 4.89549E-02 ( -0.0083585 0.0082905 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.32976e-06 ( -2.78696e-07 2.85588e-07 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 384.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.30009 ( 1.30009 0.932021 )
beta : -9.11493 ( 8.94295 18.943 )
Epeak [keV] : 99.5182 ( -50.4109 -99.5182 )
Norm@50keV : 5.73898E-04 ( -8.93992e-05 0.000599999 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.05 using 59 PHA bins.
# Reduced chi-squared = 1.255 for 55 degrees of freedom
# Null hypothesis probability = 9.639774e-02
Photon flux (15-150 keV) in 384 sec: 5.16980E-02 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.43348e-06 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 14.0217 (-2.51546 3.13606)
R^2/D10^2 : 6.90853E-03 (-0.00353781 0.00710351)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 77.14 using 59 PHA bins.
# Reduced chi-squared = 1.353 for 57 degrees of freedom
# Null hypothesis probability = 3.905683e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.102e-07 3.464e-08
25- 50 4.103e-07 1.059e-07
50-150 5.316e-07 1.792e-07
15-150 1.052e-06 2.602e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 168.774 (-89.8518 -166.975)
Norm : 0.202837 (-0.0328878 0.0471894)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.11 using 59 PHA bins.
# Reduced chi-squared = 1.212 for 57 degrees of freedom
# Null hypothesis probability = 1.304636e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.978e-07 1.104e-07
25- 50 3.727e-07 2.049e-07
50-150 7.708e-07 4.401e-07
15-150 1.341e-06 7.427e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.49314 (-1.36899 2.54629)
R1^2/D10^2 : 0.864046 (-0.788095 15.1145)
kT2 [keV] : 17.6033 (-3.71613 6.04492)
R2^2/D10^2 : 2.78706E-03 (-0.00184898 0.00255268)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.95 using 59 PHA bins.
# Reduced chi-squared = 1.217 for 55 degrees of freedom
# Null hypothesis probability = 1.296357e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.173e-07 1.104e-07
25- 50 3.403e-07 1.460e-07
50-150 6.800e-07 3.479e-07
15-150 1.238e-06 5.364e-07
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 384.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.63472 ( -0.286854 0.297135 )
Norm@50keV : 3.83139E-04 ( -6.63475e-05 6.48187e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.31 using 59 PHA bins.
# Reduced chi-squared = 1.216 for 57 degrees of freedom
# Null hypothesis probability = 1.270725e-01
Photon flux (15-150 keV) in 384 sec: 4.97795E-02 ( -0.00784771 0.00786109 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.37049e-06 ( -2.50578e-07 2.57113e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 384.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.30351 ( -1.36114 0.60962 )
Epeak [keV] : 100.189 ( -100.167 -100.167 )
Norm@50keV : 5.71427E-04 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.05 using 59 PHA bins.
# Reduced chi-squared = 1.233 for 56 degrees of freedom
# Null hypothesis probability = 1.130573e-01
Photon flux (15-150 keV) in 384 sec: 4.89549E-02 ( -0.0083585 0.0082905 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.32976e-06 ( -2.78696e-07 2.85588e-07 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 384.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.30009 ( 1.30009 0.932021 )
beta : -9.11493 ( 8.94295 18.943 )
Epeak [keV] : 99.5182 ( -50.4109 -99.5182 )
Norm@50keV : 5.73898E-04 ( -8.93992e-05 0.000599999 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.05 using 59 PHA bins.
# Reduced chi-squared = 1.255 for 55 degrees of freedom
# Null hypothesis probability = 9.639774e-02
Photon flux (15-150 keV) in 384 sec: 5.16980E-02 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.43348e-06 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 14.0217 (-2.51546 3.13606)
R^2/D10^2 : 6.90853E-03 (-0.00353781 0.00710351)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 77.14 using 59 PHA bins.
# Reduced chi-squared = 1.353 for 57 degrees of freedom
# Null hypothesis probability = 3.905683e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.102e-07 3.708e-08
25- 50 4.103e-07 1.015e-07
50-150 5.316e-07 1.848e-07
15-150 1.052e-06 2.788e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 168.774 (-89.8518 -166.975)
Norm : 0.202837 (-0.0328878 0.0471894)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.11 using 59 PHA bins.
# Reduced chi-squared = 1.212 for 57 degrees of freedom
# Null hypothesis probability = 1.304636e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.978e-07 1.107e-07
25- 50 3.727e-07 2.047e-07
50-150 7.708e-07 4.391e-07
15-150 1.341e-06 7.444e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.49314 (-1.36899 2.54629)
R1^2/D10^2 : 0.864046 (-0.788095 15.1145)
kT2 [keV] : 17.6033 (-3.71613 6.04492)
R2^2/D10^2 : 2.78706E-03 (-0.00184898 0.00255268)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.95 using 59 PHA bins.
# Reduced chi-squared = 1.217 for 55 degrees of freedom
# Null hypothesis probability = 1.296357e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.173e-07 1.063e-07
25- 50 3.403e-07 1.505e-07
50-150 6.800e-07 3.639e-07
15-150 1.238e-06 5.805e-07
Plot creation:
Fri Jun 10 12:29:20 EDT 2016