batgrbproduct Analysis for Trigger=719854
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): Mon Oct 31 03:03:25 EDT 2016
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger719854/GCN5_download_cron
======================================================================
Trigger: 00719854 Segment: 000
BAT Trigger Time: 499513456 [s; MET]
Trigger Stop: 499513800 [s; MET]
UTC: 2016-10-30T09:43:58.915960 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 288.803232375459 Dec: 10.9413134909882 [deg; J2000]
Catalogged Source?: YES
Point Source?: YES
GRB Indicated?: NO [ by BAT flight software ]
Image S/N Ratio: 13.03
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 13.03
Flight Position: [ source = BAT ]
RA: 288.803232375459 Dec: 10.9413134909882 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 288.810395480521 Dec: 10.9321314841533 [deg; J2000]
{ 19h 15m 14.5s , +10d 55' 55.7" }
+/- 2.3222295425337 [arcmin] (estimated 90% radius based on SNR)
+/- 1.02703947705962 [arcmin] (formal 1-sigma fit error)
SNR: 9.12844374012088
Angular difference between Flight and Ground position is 0.693960 arcmin
Partial Coding Fraction: 0.515625 [ including projection effects ]
Duration
T90: 376.707999944687 +/- 27.0173165525343
Measured from: -49.7559998631477
to: 326.952000081539 [s; relative to TRIGTIME]
T50: 217.771999895573 +/- 45.8100373474727
Measured from: 68.7200001478195
to: 286.492000043392 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -58.9120000004768
to: -57.9120000004768 [s; relative to TRIGTIME]
Total Fluence
Measured from: -58.811999976635
to: 335.536000013351 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 2.822275 0.933466 0.582148 0.176378
0.172037 0.173749 0.146697 0.120355 [error]
Peak 0.087545 0.040237 0.027104 -0.009161
0.017945 0.014455 0.013355 0.011596 [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 9.66e-07 5.29e-07 1.82e-07 8.14e-08 1.72e-06 1.76e-06 erg/cm2
Error 1.35e-07 1.18e-07 9.54e-08 7.91e-08 2.55e-07 2.86e-07 erg/cm2
Peak flux Power-law 9.37e-01 2.09e-01 2.38e-02 3.00e-03 1.17e+00 1.18e+00 ph/cm2/s
Error 4.10e-01 2.19e-01 8.54e-02 5.19e-02 4.34e-01 4.36e-01 ph/cm2/s
Fluence Cutoff-PL 9.69e-07 5.25e-07 1.78e-07 7.78e-08 1.72e-06 1.75e-06 erg/cm2
Error 1.32e-07 1.16e-07 8.20e-08 9.35e-08 1.90e-07 2.68e-07 erg/cm2
Peak flux Cutoff-PL 9.51e-01 1.89e-01 1.85e-02 1.97e-03 1.16e+00 1.16e+00 ph/cm2/s
Error -------- -------- -------- -------- -------- 4.37e-01 ph/cm2/s
Fluence Band -------- -------- -------- -------- -------- -------- erg/cm2
Error -------- -------- -------- -------- -------- -------- erg/cm2
Peak flux Band 6.30e-01 9.60e-03 3.23e-05 1.09e-07 6.39e-01 6.39e-01 ph/cm2/s
Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 ph/cm2/s
=== Time-averaged spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 3.541 0.467 - - 2.70e-04 1.06e-04 64.860 57
CPL 1.000 0.000 50.0 0.0 1.78e-03 0.00e+00 129.070 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 4.043 2.892 - - 1.84e-03 3.69e-03 71.830 57
CPL 1.914 0.000 4.9 0.0 1.35e-02 0.00e+00 74.740 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 394.348 -58.812 335.536
T90 376.708 -49.756 326.952
T50 217.772 68.720 286.492
Peak 1.000 -58.912 -57.912
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
288.8104 +10.9321 0.0210 35.8 -141.7 4.1666 9.1 TRIG_00719854
------------------------------------------
Foreground time interval of the image:
-15.799 335.536 (delta_t = 351.335 [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 -58.812 sec. to 335.536 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 3.54139 ( -0.434799 0.498271 )
Norm@50keV : 2.70495E-04 ( -9.79595e-05 0.000114131 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.86 using 59 PHA bins.
# Reduced chi-squared = 1.138 for 57 degrees of freedom
# Null hypothesis probability = 2.216358e-01
Photon flux (15-150 keV) in 394.3 sec: 0.113148 ( -0.0132944 0.0132944 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.72171e-06 ( -2.46803e-07 2.64027e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -58.812 sec. to 335.536 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 1.78261E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 129.07 using 59 PHA bins.
# Reduced chi-squared = 2.3049 for 56 degrees of freedom
# Null hypothesis probability = 1.065327e-07
Photon flux (15-150 keV) in 394.3 sec: 0.113080 ( -0.0132866 0.013287 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.71547e-06 ( -2.41402e-07 1.38955e-07 ) ergs/cm2
Band function
Time interval is from -58.812 sec. to 335.536 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -2.88328 ( 2.88328 2.88328 )
beta : -3.54241 ( -0.497307 0.434877 )
Epeak [keV] : 25.1559 ( -25.1559 -25.1559 )
Norm@50keV : 3.67331E-02 ( -0.0114802 0.0155449 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.86 using 59 PHA bins.
# Reduced chi-squared = 1.179 for 55 degrees of freedom
# Null hypothesis probability = 1.705592e-01
Photon flux (15-150 keV) in 394.3 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] : 3.77256 (-0.485505 0.588097)
R^2/D10^2 : 3.79995 (-2.08309 4.67166)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 77.54 using 59 PHA bins.
# Reduced chi-squared = 1.360 for 57 degrees of freedom
# Null hypothesis probability = 3.655817e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.019e-06 2.904e-07
25- 50 3.102e-07 1.017e-07
50-150 2.620e-09 1.972e-09
15-150 1.332e-06 3.190e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 10.2794 (-2.54226 4.19105)
Norm : 3.54444 (-1.55659 3.13723)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 72.63 using 59 PHA bins.
# Reduced chi-squared = 1.274 for 57 degrees of freedom
# Null hypothesis probability = 7.937597e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.858e-07 1.920e-07
25- 50 4.402e-07 1.259e-07
50-150 3.252e-08 2.252e-08
15-150 1.459e-06 3.369e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.26694 (-0.48317 0.541149)
R1^2/D10^2 : 7.91322 (-4.6152 12.9426)
kT2 [keV] : 18.6243 (-6.40923 12.3993)
R2^2/D10^2 : 1.82001E-03 (-0.00151316 0.00722839)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.48 using 59 PHA bins.
# Reduced chi-squared = 1.045 for 55 degrees of freedom
# Null hypothesis probability = 3.833694e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.021e-06 4.104e-07
25- 50 4.226e-07 1.659e-07
50-150 5.937e-07 3.705e-07
15-150 2.037e-06 8.091e-07
Peak spectrum fit
Power-law model
Time interval is from -58.912 sec. to -57.912 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 4.04274 ( -1.93105 3.85258 )
Norm@50keV : 1.83668E-03 ( -0.00174128 0.00564763 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.83 using 59 PHA bins.
# Reduced chi-squared = 1.260 for 57 degrees of freedom
# Null hypothesis probability = 8.932375e-02
Photon flux (15-150 keV) in 1 sec: 1.17263 ( -0.457451 0.411028 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.1119e-08 ( -2.05896e-08 3.03587e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -58.912 sec. to -57.912 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.91438 ( )
Epeak [keV] : 4.91298 ( )
Norm@50keV : 1.34995E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 74.74 using 59 PHA bins.
# Reduced chi-squared = 1.335 for 56 degrees of freedom
# Null hypothesis probability = 4.786283e-02
Photon flux (15-150 keV) in 1 sec: 1.16175 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 4.17393e-08 ( 0 0 ) ergs/cm2
Band function
Time interval is from -58.912 sec. to -57.912 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -9.99981 ( 9.99981 9.99981 )
beta : -4.09629 ( -3.76952 2.00746 )
Epeak [keV] : 8.28874 ( -8.28874 -8.28874 )
Norm@50keV : 0.237807 ( -0.221248 0.782575 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.82 using 59 PHA bins.
# Reduced chi-squared = 1.306 for 55 degrees of freedom
# Null hypothesis probability = 6.342504e-02
Photon flux (15-150 keV) in 1 sec: 0.639347 ( 6.36065 -0.639347 ) 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] : 2.93567 (-1.79147 2.70661)
R^2/D10^2 : 170.499 (-188.575 926116)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 75.26 using 59 PHA bins.
# Reduced chi-squared = 1.320 for 57 degrees of freedom
# Null hypothesis probability = 5.300664e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.782e-08 1.588e-08
25- 50 3.757e-09 2.646e-09
50-150 5.066e-12 6.760e-12
15-150 3.159e-08 1.946e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 6.70975 (-6.66711 45.6568)
Norm : 98.4839 (-101.491 26158.3)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 73.84 using 59 PHA bins.
# Reduced chi-squared = 1.295 for 57 degrees of freedom
# Null hypothesis probability = 6.617363e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.788e-08 1.679e-08
25- 50 6.414e-09 4.674e-09
50-150 1.212e-10 1.449e-10
15-150 3.441e-08 2.081e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 1.64278 (-1.15079 1.63148)
R1^2/D10^2 : 1.41346E+04 (-15065.3 -15102.4)
kT2 [keV] : 19.0460 (-14.7316 76.0905)
R2^2/D10^2 : 3.11264E-02 (-0.0331888 0.241973)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 67.81 using 59 PHA bins.
# Reduced chi-squared = 1.233 for 55 degrees of freedom
# Null hypothesis probability = 1.150194e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.193e-08 1.189e-08
25- 50 1.087e-08 7.395e-09
50-150 2.850e-08 2.257e-08
15-150 6.129e-08 3.215e-08
Plot creation:
Mon Oct 31 03:11:02 EDT 2016