batgrbproduct Analysis for Trigger=690598
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 17:01:31 EDT 2016
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger690598/GCN5_download_cron
======================================================================
Trigger: 00690598 Segment: 000
BAT Trigger Time: 487374050.816 [s; MET]
Trigger Stop: 487374051.84 [s; MET]
UTC: 2016-06-11T21:40:34.413540 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 164.437689236213 Dec: -70.3948489703434 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.82
Image Trigger?: NO
Rate S/N Ratio: 11.3137084989848 [ if not an image trigger ]
Image S/N Ratio: 7.82
Flight Position: [ source = BAT ]
RA: 164.437689236213 Dec: -70.3948489703434 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 164.416747529085 Dec: -70.3960682847103 [deg; J2000]
{ 10h 57m 40.0s , -70d 23' 45.8" }
+/- 1.18656759728501 [arcmin] (estimated 90% radius based on SNR)
+/- 0.500936833868164 [arcmin] (formal 1-sigma fit error)
SNR: 23.8224409606707
Angular difference between Flight and Ground position is 0.427890 arcmin
Partial Coding Fraction: 0.453125 [ including projection effects ]
Duration
T90: 34.1199999451637 +/- 5.62995025016611
Measured from: -25.4119998812675
to: 8.70800006389618 [s; relative to TRIGTIME]
T50: 10.62399995327 +/- 1.99731914915822
Measured from: -6.65999984741211
to: 3.96400010585785 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 2.8400000333786
to: 3.8400000333786 [s; relative to TRIGTIME]
Total Fluence
Measured from: -31.3840000033379
to: 10.3680000305176 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.757836 1.006980 0.734766 0.150088
0.059094 0.060694 0.052780 0.047104 [error]
Peak 0.075424 0.070406 0.065283 0.012205
0.009744 0.010646 0.008619 0.007740 [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 2.77e-07 4.58e-07 5.75e-07 1.44e-06 1.71e-06 2.75e-06 erg/cm2
Error 3.21e-08 3.22e-08 5.34e-08 2.85e-07 1.27e-07 3.27e-07 erg/cm2
Peak flux Power-law 8.10e-01 6.73e-01 3.80e-01 3.17e-01 2.00e+00 2.18e+00 ph/cm2/s
Error 1.72e-01 9.22e-02 7.50e-02 1.23e-01 2.76e-01 2.95e-01 ph/cm2/s
Fluence Cutoff-PL 2.69e-07 4.66e-07 5.81e-07 1.11e-06 1.69e-06 2.43e-06 erg/cm2
Error 3.61e-08 3.79e-08 5.63e-08 5.53e-07 1.38e-07 5.78e-07 erg/cm2
Peak flux Cutoff-PL 7.93e-01 6.85e-01 3.84e-01 2.62e-01 1.99e+00 2.12e+00 ph/cm2/s
Error 1.92e-01 1.09e-01 8.00e-02 2.22e-01 2.81e-01 3.43e-01 ph/cm2/s
Fluence Band -------- -------- -------- -------- -------- -------- erg/cm2
Error -------- -------- -------- -------- -------- -------- erg/cm2
Peak flux Band 7.72e-01 6.95e-01 3.90e-01 2.29e-01 1.99e+00 2.09e+00 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 1.672 0.122 - - 4.42e-03 3.10e-04 60.120 57
CPL 1.507 0.370 148.5 0.0 5.36e-03 0.00e+00 59.700 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.825 0.244 - - 1.44e-02 2.19e-03 56.380 57
CPL 1.673 0.771 102.3 -0.0 1.74e-02 2.74e-02 56.290 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: 37.440000 sec.
T50 in the 50-300 keV band: 11.392000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 41.752 -31.384 10.368
T90 34.120 -25.412 8.708
T50 10.624 -6.660 3.964
Peak 1.000 2.840 3.840
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
164.4167 -70.3961 0.0080 41.9 -151.8 2.8354 23.8 TRIG_00690598
------------------------------------------
Foreground time interval of the image:
-31.384 10.368 (delta_t = 41.752 [sec])
Background time interval of the image:
-239.816 -100.246 (delta_t = 139.570 [sec])
-98.816 -31.384 (delta_t = 67.432 [sec])
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 -31.384 sec. to 10.368 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.67216 ( -0.121588 0.122894 )
Norm@50keV : 4.41659E-03 ( -0.000311009 0.000309324 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.12 using 59 PHA bins.
# Reduced chi-squared = 1.055 for 57 degrees of freedom
# Null hypothesis probability = 3.633708e-01
Photon flux (15-150 keV) in 41.75 sec: 0.580984 ( -0.0408962 0.0409885 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.71129e-06 ( -1.26532e-07 1.27223e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -31.384 sec. to 10.368 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.50745 ( -0.468835 0.271692 )
Epeak [keV] : 148.511 ( )
Norm@50keV : 5.35655E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.70 using 59 PHA bins.
# Reduced chi-squared = 1.066 for 56 degrees of freedom
# Null hypothesis probability = 3.427873e-01
Photon flux (15-150 keV) in 41.75 sec: 0.576017 ( -0.042778 0.042702 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.69118e-06 ( -1.38506e-07 1.37341e-07 ) ergs/cm2
Band function
Time interval is from -31.384 sec. to 10.368 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.50761 ( -0.220181 0.412941 )
beta : -10.00000 ( 10 20 )
Epeak [keV] : 146.613 ( -75.4662 -146.613 )
Norm@50keV : 5.36640E-03 ( -0.000360727 0.0037788 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.70 using 59 PHA bins.
# Reduced chi-squared = 1.085 for 55 degrees of freedom
# Null hypothesis probability = 3.088293e-01
Photon flux (15-150 keV) in 41.75 sec: 0.573190 ( ) 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] : 13.5433 ( )
R^2/D10^2 : 8.88078E-02 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 121.59 using 59 PHA bins.
# Reduced chi-squared = 2.1331 for 57 degrees of freedom
# Null hypothesis probability = 1.402793e-06
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.440e-07 1.860e-08
25- 50 5.180e-07 4.801e-08
50-150 6.147e-07 8.809e-08
15-150 1.277e-06 1.081e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 155.676 (-45.4116 -154.666)
Norm : 2.36301 (-0.181727 0.23424)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.43 using 59 PHA bins.
# Reduced chi-squared = 1.060 for 57 degrees of freedom
# Null hypothesis probability = 3.529878e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.526e-07 2.501e-08
25- 50 4.706e-07 7.135e-08
50-150 9.431e-07 3.975e-07
15-150 1.666e-06 4.570e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.14634 (-1.16163 1.23947)
R1^2/D10^2 : 0.648917 (-0.277193 0.57724)
kT2 [keV] : 28.2438 (-5.45842 9.01023)
R2^2/D10^2 : 4.89573E-03 (-0.00295544 0.00580879)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.11 using 59 PHA bins.
# Reduced chi-squared = 1.038 for 55 degrees of freedom
# Null hypothesis probability = 3.964830e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.534e-07 7.014e-08
25- 50 4.825e-07 9.648e-08
50-150 9.729e-07 3.860e-07
15-150 1.709e-06 4.841e-07
Peak spectrum fit
Power-law model
Time interval is from 2.840 sec. to 3.840 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.82534 ( -0.237467 0.249656 )
Norm@50keV : 1.43970E-02 ( -0.00221268 0.00215742 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.38 using 59 PHA bins.
# Reduced chi-squared = 0.9891 for 57 degrees of freedom
# Null hypothesis probability = 4.982520e-01
Photon flux (15-150 keV) in 1 sec: 2.00370 ( -0.275617 0.276033 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.32439e-07 ( -2.0287e-08 2.05233e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 2.840 sec. to 3.840 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.67270 ( -0.964297 0.5783 )
Epeak [keV] : 102.251 ( -101.855 -101.871 )
Norm@50keV : 1.73600E-02 ( -0.0173843 0.0374564 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.29 using 59 PHA bins.
# Reduced chi-squared = 1.005 for 56 degrees of freedom
# Null hypothesis probability = 4.640984e-01
Photon flux (15-150 keV) in 1 sec: 1.99292 ( -0.2821 0.28059 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.31218e-07 ( -2.1388e-08 2.1411e-08 ) ergs/cm2
Band function
Time interval is from 2.840 sec. to 3.840 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.67317 ( -4.38292 0.900803 )
beta : -10.0000 ( 10 3.55271e-15 )
Epeak [keV] : 102.387 ( -80.5143 -102.387 )
Norm@50keV : 1.73470E-02 ( -0.00501861 0.0375026 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.29 using 59 PHA bins.
# Reduced chi-squared = 1.023 for 55 degrees of freedom
# Null hypothesis probability = 4.265025e-01
Photon flux (15-150 keV) in 1 sec: 1.98632 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.31008e-07 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 12.9456 (-2.21358 2.58107)
R^2/D10^2 : 0.360285 (-0.177032 0.360432)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 74.91 using 59 PHA bins.
# Reduced chi-squared = 1.314 for 57 degrees of freedom
# Null hypothesis probability = 5.600355e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.281e-08 3.410e-09
25- 50 4.391e-08 8.850e-09
50-150 4.641e-08 1.317e-08
15-150 1.031e-07 1.921e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 99.8013 (-35.0657 97.8551)
Norm : 8.85077 (-1.63362 1.87188)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.82 using 59 PHA bins.
# Reduced chi-squared = 0.9968 for 57 degrees of freedom
# Null hypothesis probability = 4.819663e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.313e-08 4.665e-09
25- 50 3.998e-08 7.230e-09
50-150 6.472e-08 3.056e-08
15-150 1.278e-07 3.937e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.58749 (-1.36413 1.97685)
R1^2/D10^2 : 12.6110 (-9.66761 38.5156)
kT2 [keV] : 19.8202 (-4.32952 7.51064)
R2^2/D10^2 : 6.15147E-02 (-0.0431726 0.0682716)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.46 using 59 PHA bins.
# Reduced chi-squared = 0.9902 for 55 degrees of freedom
# Null hypothesis probability = 4.950686e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.613e-08 1.351e-08
25- 50 3.441e-08 1.517e-08
50-150 6.762e-08 3.934e-08
15-150 1.282e-07 5.438e-08
Plot creation:
Sun Jun 12 17:06:18 EDT 2016