batgrbproduct Analysis for Trigger=707517
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 Aug 7 08:44:06 EDT 2016
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger707517/GCN5_download_cron
======================================================================
Trigger: 00707517 Segment: 000
BAT Trigger Time: 492153528 [s; MET]
Trigger Stop: 492153592 [s; MET]
UTC: 2016-08-06T05:18:31.331480 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 98.2076020223504 Dec: -22.785764751044 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.15
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 7.15
Flight Position: [ source = BAT ]
RA: 98.2076020223504 Dec: -22.785764751044 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 98.2285509172841 Dec: -22.8098331498314 [deg; J2000]
{ 06h 32m 54.9s , -22d 48' 35.4" }
+/- 3.73995914656726 [arcmin] (estimated 90% radius based on SNR)
+/- 2.28864892440487 [arcmin] (formal 1-sigma fit error)
SNR: 4.62101261350672
Angular difference between Flight and Ground position is 1.851517 arcmin
Partial Coding Fraction: 0.984375 [ 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 0.279077 0.191450 0.015566 0.005468
0.050470 0.050646 0.043072 0.037035 [error]
Peak 0.279077 0.191450 0.015566 0.005468
0.050470 0.050646 0.043072 0.037035 [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 6.84e-08 7.17e-08 5.32e-08 6.38e-08 2.18e-07 2.57e-07 erg/cm2
Error 2.04e-08 2.27e-08 3.14e-08 8.08e-08 7.72e-08 1.21e-07 erg/cm2
Peak flux Power-law 3.51e-02 2.05e-02 7.61e-03 3.74e-03 6.53e-02 6.70e-02 ph/cm2/s
Error 1.07e-02 6.28e-03 4.36e-03 4.48e-03 1.75e-02 1.85e-02 ph/cm2/s
Fluence Cutoff-PL 6.83e-08 9.22e-08 1.95e-08 2.43e-10 1.80e-07 1.80e-07 erg/cm2
Error 2.31e-08 3.29e-08 3.05e-08 1.31e-08 5.69e-08 5.73e-08 erg/cm2
Peak flux Cutoff-PL 3.41e-02 2.68e-02 3.17e-03 2.16e-05 6.42e-02 6.42e-02 ph/cm2/s
Error 1.20e-02 9.14e-03 4.50e-03 9.22e-04 1.64e-02 1.64e-02 ph/cm2/s
Fluence Band -------- -------- -------- -------- -------- -------- erg/cm2
Error -------- -------- -------- -------- -------- -------- 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 2.430 0.548 - - 3.46e-04 1.54e-04 69.590 57
CPL -0.698 3.725 26.8 15.1 4.84e-02 7.94e+01 65.910 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 2.430 0.548 - - 3.46e-04 1.54e-04 69.590 57
CPL -0.698 3.725 26.8 15.1 4.84e-02 7.94e+01 65.910 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
98.2286 -22.8098 0.0416 12.9 27.6 0.5040 4.6 TRIG_00707517
------------------------------------------
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: 2.43027 ( -0.492201 0.604296 )
Norm@50keV : 3.46474E-04 ( -0.000151137 0.000156873 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.59 using 59 PHA bins.
# Reduced chi-squared = 1.221 for 57 degrees of freedom
# Null hypothesis probability = 1.222760e-01
Photon flux (15-150 keV) in 64 sec: 6.52582E-02 ( -0.0174912 0.0175674 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.17768e-07 ( -7.29395e-08 8.14771e-08 ) 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: -0.698473 ( -4.81749 2.63172 )
Epeak [keV] : 26.7962 ( -21.74 8.39329 )
Norm@50keV : 4.83679E-02 ( -0.0565456 158.717 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.91 using 59 PHA bins.
# Reduced chi-squared = 1.177 for 56 degrees of freedom
# Null hypothesis probability = 1.713851e-01
Photon flux (15-150 keV) in 64 sec: 6.41555E-02 ( -0.0163496 0.0165313 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.80214e-07 ( -5.208e-08 6.16749e-08 ) 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 : 1.25773 ( -2.40092 -1.26494 )
beta : -9.99551 ( 9.99551 19.9919 )
Epeak [keV] : 27.2179 ( -6.39891 7.91384 )
Norm@50keV : 0.117972 ( -0.117972 44.6414 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.89 using 59 PHA bins.
# Reduced chi-squared = 1.198 for 55 degrees of freedom
# Null hypothesis probability = 1.493622e-01
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] : 7.09573 (-1.62388 1.92084)
R^2/D10^2 : 0.127581 (-0.0802007 0.241442)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.97 using 59 PHA bins.
# Reduced chi-squared = 1.157 for 57 degrees of freedom
# Null hypothesis probability = 1.945463e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.697e-08 3.865e-08
25- 50 9.414e-08 5.691e-08
50-150 1.638e-08 1.342e-08
15-150 1.775e-07 9.364e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 29.2640 (-12.3709 27.8981)
Norm : 0.550549 (-0.224041 0.408813)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 67.43 using 59 PHA bins.
# Reduced chi-squared = 1.183 for 57 degrees of freedom
# Null hypothesis probability = 1.623651e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.079e-08 3.229e-08
25- 50 7.978e-08 4.175e-08
50-150 4.228e-08 3.340e-08
15-150 1.928e-07 1.013e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.17570 (-4.16521 -4.16521)
R1^2/D10^2 : 0.280493 (-0.277715 -0.277715)
kT2 [keV] : 7.91361 (-7.88139 -7.88139)
R2^2/D10^2 : 6.76389E-02 (-0.0693817 0.286717)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.80 using 59 PHA bins.
# Reduced chi-squared = 1.196 for 55 degrees of freedom
# Null hypothesis probability = 1.509975e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.865e-08 4.646e-08
25- 50 9.167e-08 7.354e-08
50-150 2.128e-08 3.363e-08
15-150 1.816e-07 1.563e-07
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: 2.43027 ( -0.492201 0.604296 )
Norm@50keV : 3.46474E-04 ( -0.000151137 0.000156873 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.59 using 59 PHA bins.
# Reduced chi-squared = 1.221 for 57 degrees of freedom
# Null hypothesis probability = 1.222760e-01
Photon flux (15-150 keV) in 64 sec: 6.52582E-02 ( -0.0174912 0.0175674 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.17768e-07 ( -7.29395e-08 8.14771e-08 ) 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: -0.698473 ( -4.81749 2.63172 )
Epeak [keV] : 26.7962 ( -21.74 8.39329 )
Norm@50keV : 4.83679E-02 ( -0.0565456 158.717 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.91 using 59 PHA bins.
# Reduced chi-squared = 1.177 for 56 degrees of freedom
# Null hypothesis probability = 1.713851e-01
Photon flux (15-150 keV) in 64 sec: 6.41555E-02 ( -0.0163496 0.0165313 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.80214e-07 ( -5.208e-08 6.16749e-08 ) 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 : 1.25773 ( -2.40092 -1.26494 )
beta : -9.99551 ( 9.99551 19.9919 )
Epeak [keV] : 27.2179 ( -6.39891 7.91384 )
Norm@50keV : 0.117972 ( -0.117972 44.6414 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.89 using 59 PHA bins.
# Reduced chi-squared = 1.198 for 55 degrees of freedom
# Null hypothesis probability = 1.493622e-01
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] : 7.09573 (-1.62388 1.92084)
R^2/D10^2 : 0.127581 (-0.0802007 0.241442)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.97 using 59 PHA bins.
# Reduced chi-squared = 1.157 for 57 degrees of freedom
# Null hypothesis probability = 1.945463e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.697e-08 3.949e-08
25- 50 9.414e-08 5.493e-08
50-150 1.638e-08 1.248e-08
15-150 1.775e-07 1.031e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 29.2640 (-12.3709 27.8981)
Norm : 0.550549 (-0.224041 0.408813)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 67.43 using 59 PHA bins.
# Reduced chi-squared = 1.183 for 57 degrees of freedom
# Null hypothesis probability = 1.623651e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.079e-08 2.848e-08
25- 50 7.978e-08 4.129e-08
50-150 4.228e-08 3.402e-08
15-150 1.928e-07 9.911e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.17570 (-4.16521 -4.16521)
R1^2/D10^2 : 0.280493 (-0.277715 -0.277715)
kT2 [keV] : 7.91361 (-7.88139 -7.88139)
R2^2/D10^2 : 6.76389E-02 (-0.0693817 0.286717)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.80 using 59 PHA bins.
# Reduced chi-squared = 1.196 for 55 degrees of freedom
# Null hypothesis probability = 1.509975e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.865e-08 5.322e-08
25- 50 9.167e-08 7.978e-08
50-150 2.128e-08 2.305e-08
15-150 1.816e-07 1.764e-07
Plot creation:
Sun Aug 7 08:50:23 EDT 2016