batgrbproduct Analysis for Trigger=716127
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 15 downlinks after the trigger.
======================================================================
BAT GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.46
Process Start Time (local time): Sat Oct 8 19:57:27 EDT 2016
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger716127/GCN5_download_cron
======================================================================
Trigger: 00716127 Segment: 000
BAT Trigger Time: 497568360 [s; MET]
Trigger Stop: 497568424 [s; MET]
UTC: 2016-10-07T21:25:43.026220 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 103.390045627351 Dec: 23.2890509134283 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 10.47
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 10.47
Flight Position: [ source = BAT ]
RA: 103.390045627351 Dec: 23.2890509134283 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 103.407981926992 Dec: 23.2885476272225 [deg; J2000]
{ 06h 53m 37.9s , +23d 17' 18.8" }
+/- 1.55685355074424 [arcmin] (estimated 90% radius based on SNR)
+/- 0.789148186303047 [arcmin] (formal 1-sigma fit error)
SNR: 16.1613903749925
Angular difference between Flight and Ground position is 0.988956 arcmin
Partial Coding Fraction: 0.875 [ including projection effects ]
Duration
T90: 201.68799996376 +/- 40.3326409979874
Measured from: 21.6200001239777
to: 223.308000087738 [s; relative to TRIGTIME]
T50: 74.0479999184608 +/- 29.7085266996254
Measured from: 34.484000146389
to: 108.53200006485 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 33.8080000281334
to: 34.8080000281334 [s; relative to TRIGTIME]
Total Fluence
Measured from: 18.2239999771118
to: 261.184000015259 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.543407 0.897246 0.525393 0.209352
0.078509 0.080541 0.068117 0.055555 [error]
Peak 0.008067 0.017405 0.019898 0.010425
0.005175 0.005490 0.004799 0.004000 [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 1.71e-07 3.22e-07 4.70e-07 1.46e-06 1.33e-06 2.42e-06 erg/cm2
Error 3.06e-08 3.59e-08 6.58e-08 4.36e-07 1.61e-07 4.88e-07 erg/cm2
Peak flux Power-law 7.70e-02 1.13e-01 1.24e-01 2.56e-01 3.93e-01 5.70e-01 ph/cm2/s
Error 5.04e-02 4.55e-02 3.66e-02 1.75e-01 1.19e-01 1.85e-01 ph/cm2/s
Fluence Cutoff-PL 1.62e-07 3.38e-07 4.78e-07 7.68e-07 1.28e-06 1.75e-06 erg/cm2
Error 3.44e-08 4.50e-08 7.07e-08 8.12e-07 1.85e-07 8.01e-07 erg/cm2
Peak flux Cutoff-PL 6.71e-02 1.14e-01 1.31e-01 1.70e-01 3.85e-01 4.82e-01 ph/cm2/s
Error 5.33e-02 5.03e-02 4.47e-02 2.31e-01 1.23e-01 2.32e-01 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 1.456 0.183 - - 5.75e-04 6.26e-05 57.900 57
CPL 1.059 0.691 112.8 0.0 9.33e-04 0.00e+00 57.000 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 0.866 0.544 - - 3.42e-03 1.05e-03 54.560 57
CPL 0.415 1.284 212.7 0.0 5.28e-03 3.25e-02 54.400 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: 54.848000 sec.
T50 in the 50-300 keV band: 21.632000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 242.960 18.224 261.184
T90 201.688 21.620 223.308
T50 74.048 34.484 108.532
Peak 1.000 33.808 34.808
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
103.4080 +23.2885 0.0118 18.2 47.2 1.2235 16.2 TRIG_00716127
------------------------------------------
Foreground time interval of the image:
18.224 70.301 (delta_t = 52.077 [sec])
Background time interval of the image:
-239.000 18.224 (delta_t = 257.224 [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
Multiple GTIs in the spectrum
tstart tstop
18.224000 105.360000
106.000000 261.184000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.45571 ( -0.182498 0.182614 )
Norm@50keV : 5.75078E-04 ( -6.27914e-05 6.2479e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.90 using 59 PHA bins.
# Reduced chi-squared = 1.016 for 57 degrees of freedom
# Null hypothesis probability = 4.419974e-01
Photon flux (15-150 keV) in 242.3 sec: 7.09714E-02 ( -0.007662 0.00767089 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.33201e-06 ( -1.59804e-07 1.61636e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
18.224000 105.360000
106.000000 261.184000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.05885 ( -0.844265 0.538706 )
Epeak [keV] : 112.843 ( )
Norm@50keV : 9.33249E-04 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.00 using 59 PHA bins.
# Reduced chi-squared = 1.018 for 56 degrees of freedom
# Null hypothesis probability = 4.374831e-01
Photon flux (15-150 keV) in 242.3 sec: 6.98884E-02 ( -0.0079263 0.0079102 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.28351e-06 ( -1.85902e-07 1.83596e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
18.224000 105.360000
106.000000 261.184000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.63139 ( -3.5352 -4.63139 )
beta : -1.73256 ( -0.288221 0.256588 )
Epeak [keV] : 31.0807 ( -5.51684 4.95176 )
Norm@50keV : 9.50782 ( -0.998953 92.2928 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.49 using 59 PHA bins.
# Reduced chi-squared = 0.9726 for 55 degrees of freedom
# Null hypothesis probability = 5.324220e-01
Photon flux (15-150 keV) in 242.3 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] : 13.7425 (-1.80222 2.19154)
R^2/D10^2 : 1.10266E-02 (-0.0045102 0.00720957)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 73.58 using 59 PHA bins.
# Reduced chi-squared = 1.291 for 57 degrees of freedom
# Null hypothesis probability = 6.882908e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.068e-07 2.273e-08
25- 50 3.897e-07 6.263e-08
50-150 4.799e-07 1.071e-07
15-150 9.764e-07 1.558e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-64.6895 -200)
Norm : 0.292020 (-0.0309446 0.0309446)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.59 using 59 PHA bins.
# Reduced chi-squared = 1.010 for 57 degrees of freedom
# Null hypothesis probability = 4.530658e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.762e-07 9.823e-08
25- 50 3.390e-07 1.861e-07
50-150 7.434e-07 3.963e-07
15-150 1.259e-06 6.868e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 9.09766 (-2.08039 2.26635)
R1^2/D10^2 : 3.64660E-02 (-0.0176341 0.0327522)
kT2 [keV] : 43.6316 (-19.6837 -44.0609)
R2^2/D10^2 : 1.64453E-04 (-0.000137113 0.000923269)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.74 using 59 PHA bins.
# Reduced chi-squared = 0.9589 for 55 degrees of freedom
# Null hypothesis probability = 5.614887e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.524e-07 4.971e-08
25- 50 3.737e-07 1.433e-07
50-150 8.019e-07 4.119e-07
15-150 1.328e-06 5.768e-07
Peak spectrum fit
Power-law model
Time interval is from 33.808 sec. to 34.808 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.866088 ( -0.582245 0.504901 )
Norm@50keV : 3.42110E-03 ( -0.00107522 0.00102935 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.56 using 59 PHA bins.
# Reduced chi-squared = 0.9571 for 57 degrees of freedom
# Null hypothesis probability = 5.673367e-01
Photon flux (15-150 keV) in 1 sec: 0.392652 ( -0.118044 0.119762 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.89107e-08 ( -1.16331e-08 1.17642e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 33.808 sec. to 34.808 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.414537 ( -2.98245 -0.414539 )
Epeak [keV] : 212.735 ( -212.735 -212.735 )
Norm@50keV : 5.28313E-03 ( -0.00281532 0.0621777 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.40 using 59 PHA bins.
# Reduced chi-squared = 0.9714 for 56 degrees of freedom
# Null hypothesis probability = 5.357442e-01
Photon flux (15-150 keV) in 1 sec: 0.384792 ( -0.122381 0.123269 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.82189e-08 ( -1.21936e-08 1.21423e-08 ) ergs/cm2
Band function
Time interval is from 33.808 sec. to 34.808 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.825006 ( 0.825178 0.825178 )
beta : -0.864334 ( -0.504671 0.582202 )
Epeak [keV] : 13.9432 ( -13.9358 -13.9358 )
Norm@50keV : 5.17391E-03 ( -0.00279392 0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.56 using 59 PHA bins.
# Reduced chi-squared = 0.9919 for 55 degrees of freedom
# Null hypothesis probability = 4.915588e-01
Photon flux (15-150 keV) in 1 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] : 25.3319 (-8.46472 17.2493)
R^2/D10^2 : 9.35945E-03 (-0.00934667 0.0241174)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.67 using 59 PHA bins.
# Reduced chi-squared = 0.9767 for 57 degrees of freedom
# Null hypothesis probability = 5.249328e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.036e-09 6.665e-10
25- 50 5.917e-09 3.706e-09
50-150 2.810e-08 1.754e-08
15-150 3.505e-08 2.029e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-85.1767 -200)
Norm : 1.61764 (-0.497918 0.497918)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.42 using 59 PHA bins.
# Reduced chi-squared = 1.042 for 57 degrees of freedom
# Null hypothesis probability = 3.874916e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.028e-09 2.567e-09
25- 50 7.748e-09 4.918e-09
50-150 1.699e-08 1.039e-08
15-150 2.877e-08 1.800e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 9.23833 (-9.98975 -9.98975)
R1^2/D10^2 : 8.75325E-02 (-0.0780295 -0.0780295)
kT2 [keV] : 34.8467 (-40.0626 -40.0626)
R2^2/D10^2 : 2.98808E-03 (-0.00205956 0.0203421)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.33 using 59 PHA bins.
# Reduced chi-squared = 0.9878 for 55 degrees of freedom
# Null hypothesis probability = 5.001630e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.989e-09 1.682e-09
25- 50 6.625e-09 4.418e-09
50-150 2.815e-08 1.677e-08
15-150 3.677e-08 2.065e-08
Plot creation:
Sat Oct 8 20:03:05 EDT 2016