batgrbproduct Analysis for Trigger=723365
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): Wed Nov 23 05:32:20 EST 2016
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger723365/GCN5_download_cron
======================================================================
Trigger: 00723365 Segment: 000
BAT Trigger Time: 501485720 [s; MET]
Trigger Stop: 501486040 [s; MET]
UTC: 2016-11-22T05:35:02.804000 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 299.402491818087 Dec: 35.0625602279071 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: NO [ by BAT flight software ]
Image S/N Ratio: 7.67
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 7.67
Flight Position: [ source = BAT ]
RA: 299.402491818087 Dec: 35.0625602279071 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 299.527509670701 Dec: 35.1535825127146 [deg; J2000]
{ 19h 58m 06.6s , +35d 09' 12.9" }
+/- 1.13821671962918 [arcmin] (estimated 90% radius based on SNR)
+/- 0.465875707815301 [arcmin] (formal 1-sigma fit error)
SNR: 25.2811605925267
Angular difference between Flight and Ground position is 8.214711 arcmin
Partial Coding Fraction: 0.6015625 [ including projection effects ]
Duration
T90: 320 +/-
Measured from: 0
to: 320 [s; relative to TRIGTIME]
T50: 320 +/-
Measured from: 0
to: 320 [s; relative to TRIGTIME]
WARNING: battblocks failed. Used TDRSS fore/background intervals
Fluence
Peak Flux (peak 320 second)
Measured from: 0
to: 320 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0
to: 320 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.829481 2.447580 1.512576 0.117460
0.143553 0.146259 0.129164 0.123610 [error]
Peak 1.829481 2.447580 1.512576 0.117460
0.143553 0.146259 0.129164 0.123610 [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 6.18e-07 9.81e-07 1.17e-06 2.74e-06 3.56e-06 5.51e-06 erg/cm2
Error 6.92e-08 7.03e-08 1.27e-07 6.10e-07 2.97e-07 7.27e-07 erg/cm2
Peak flux Power-law 6.29e-02 5.49e-02 3.29e-02 2.96e-02 1.63e-01 1.80e-01 ph/cm2/s
Error 7.18e-03 3.98e-03 3.43e-03 6.12e-03 1.18e-02 1.30e-02 ph/cm2/s
Fluence Cutoff-PL 5.52e-07 1.07e-06 1.17e-06 7.95e-07 3.28e-06 3.59e-06 erg/cm2
Error 8.16e-08 9.35e-08 1.44e-07 6.50e-07 3.37e-07 7.32e-07 erg/cm2
Peak flux Cutoff-PL 5.56e-02 5.97e-02 3.34e-02 1.11e-02 1.57e-01 1.60e-01 ph/cm2/s
Error 8.55e-03 5.11e-03 3.86e-03 7.30e-03 1.25e-02 1.46e-02 ph/cm2/s
Fluence Band 5.47e-07 1.07e-06 1.17e-06 8.14e-07 3.28e-06 3.61e-06 erg/cm2
Error -------- -------- -------- -------- -------- -------- erg/cm2
Peak flux Band 5.58e-02 5.94e-02 3.36e-02 1.18e-02 1.57e-01 1.61e-01 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 1.741 0.130 - - 1.21e-03 9.64e-05 59.160 57
CPL 0.874 0.612 58.8 19.5 3.56e-03 3.09e-03 51.940 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.741 0.130 - - 1.21e-03 9.64e-05 59.160 57
CPL 0.874 0.612 58.8 19.5 3.56e-03 3.09e-03 51.940 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 320.000 0.000 320.000
T90 320.000 0.000 320.000
T50 320.000 0.000 320.000
Peak 320.000 0.000 320.000
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
299.5275 +35.1536 0.0076 26.1 59.7 9.3869 25.3 TRIG_00723365
------------------------------------------
Foreground time interval of the image:
0.000 79.410 (delta_t = 79.410 [sec])
81.000 320.000 (delta_t = 239.000 [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
Multiple GTIs in the spectrum
tstart tstop
0.000000 79.410000
81.000000 320.000000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.74070 ( -0.128178 0.130918 )
Norm@50keV : 1.21270E-03 ( -9.68813e-05 9.59026e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.16 using 59 PHA bins.
# Reduced chi-squared = 1.038 for 57 degrees of freedom
# Null hypothesis probability = 3.966457e-01
Photon flux (15-150 keV) in 318.4 sec: 0.163418 ( -0.0117896 0.0117997 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.56487e-06 ( -2.94965e-07 2.98556e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
0.000000 79.410000
81.000000 320.000000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.873747 ( -0.654763 0.568668 )
Epeak [keV] : 58.8444 ( -9.96431 29.0043 )
Norm@50keV : 3.56445E-03 ( -0.00178078 0.00440844 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.94 using 59 PHA bins.
# Reduced chi-squared = 0.9275 for 56 degrees of freedom
# Null hypothesis probability = 6.291748e-01
Photon flux (15-150 keV) in 318.4 sec: 0.156546 ( -0.012545 0.012551 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.28073e-06 ( -3.30881e-07 3.43299e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
0.000000 79.410000
81.000000 320.000000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.873830 ( -0.519448 0.513203 )
beta : -10.0000 ( 10 1.77636e-15 )
Epeak [keV] : 58.8324 ( -9.49391 28.9087 )
Norm@50keV : 3.56408E-03 ( -0.00178062 0.00442072 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.94 using 59 PHA bins.
# Reduced chi-squared = 0.9444 for 55 degrees of freedom
# Null hypothesis probability = 5.922043e-01
Photon flux (15-150 keV) in 318.4 sec: 0.157042 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 3.2785e-06 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 12.2847 (-0.996158 1.09836)
R^2/D10^2 : 3.62934E-02 (-0.00985439 0.013334)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 77.20 using 59 PHA bins.
# Reduced chi-squared = 1.354 for 57 degrees of freedom
# Null hypothesis probability = 3.868476e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.694e-07 5.077e-08
25- 50 1.195e-06 1.016e-07
50-150 1.101e-06 1.882e-07
15-150 2.665e-06 2.304e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 108.235 (-25.9325 44.6862)
Norm : 0.711732 (-0.0673078 0.0749386)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.35 using 59 PHA bins.
# Reduced chi-squared = 0.9359 for 57 degrees of freedom
# Null hypothesis probability = 6.128391e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.920e-07 6.750e-08
25- 50 1.040e-06 9.695e-08
50-150 1.760e-06 6.088e-07
15-150 3.391e-06 6.592e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.62167 (-1.81336 2.28476)
R1^2/D10^2 : 0.330580 (-0.215567 1.18375)
kT2 [keV] : 17.4678 (-3.02898 6.17169)
R2^2/D10^2 : 7.94897E-03 (-0.00576208 0.00975149)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.40 using 59 PHA bins.
# Reduced chi-squared = 0.9528 for 55 degrees of freedom
# Null hypothesis probability = 5.744835e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.561e-07 2.588e-07
25- 50 1.050e-06 3.861e-07
50-150 1.574e-06 6.618e-07
15-150 3.180e-06 1.052e-06
Peak spectrum fit
Power-law model
Time interval is from 81.000 sec. to 320.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.74070 ( -0.128178 0.130918 )
Norm@50keV : 1.21270E-03 ( -9.68813e-05 9.59026e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.16 using 59 PHA bins.
# Reduced chi-squared = 1.038 for 57 degrees of freedom
# Null hypothesis probability = 3.966457e-01
Photon flux (15-150 keV) in 318.4 sec: 0.163418 ( -0.0117896 0.0117997 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.56487e-06 ( -2.94965e-07 2.98556e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 81.000 sec. to 320.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.873747 ( -0.654763 0.568668 )
Epeak [keV] : 58.8444 ( -9.96431 29.0043 )
Norm@50keV : 3.56445E-03 ( -0.00178078 0.00440844 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.94 using 59 PHA bins.
# Reduced chi-squared = 0.9275 for 56 degrees of freedom
# Null hypothesis probability = 6.291748e-01
Photon flux (15-150 keV) in 318.4 sec: 0.156546 ( -0.012545 0.012551 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.28073e-06 ( -3.30881e-07 3.43299e-07 ) ergs/cm2
Band function
Time interval is from 81.000 sec. to 320.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.873830 ( -0.519448 0.513203 )
beta : -10.0000 ( 10 5.32907e-15 )
Epeak [keV] : 58.8324 ( -9.49391 28.9087 )
Norm@50keV : 3.56408E-03 ( -0.00178062 0.00442072 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.94 using 59 PHA bins.
# Reduced chi-squared = 0.9444 for 55 degrees of freedom
# Null hypothesis probability = 5.922043e-01
Photon flux (15-150 keV) in 318.4 sec: 0.157042 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 3.2785e-06 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 12.2847 (-0.996158 1.09836)
R^2/D10^2 : 3.62934E-02 (-0.00985439 0.013334)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 77.20 using 59 PHA bins.
# Reduced chi-squared = 1.354 for 57 degrees of freedom
# Null hypothesis probability = 3.868476e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.694e-07 4.873e-08
25- 50 1.195e-06 1.083e-07
50-150 1.101e-06 1.918e-07
15-150 2.665e-06 2.122e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 108.235 (-25.9325 44.6862)
Norm : 0.711732 (-0.0673078 0.0749386)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.35 using 59 PHA bins.
# Reduced chi-squared = 0.9359 for 57 degrees of freedom
# Null hypothesis probability = 6.128391e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.920e-07 6.814e-08
25- 50 1.040e-06 9.345e-08
50-150 1.760e-06 6.229e-07
15-150 3.391e-06 6.745e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.62167 (-1.81336 2.28476)
R1^2/D10^2 : 0.330580 (-0.215567 1.18375)
kT2 [keV] : 17.4678 (-3.02898 6.17169)
R2^2/D10^2 : 7.94897E-03 (-0.00576208 0.00975149)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.40 using 59 PHA bins.
# Reduced chi-squared = 0.9528 for 55 degrees of freedom
# Null hypothesis probability = 5.744835e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.561e-07 2.697e-07
25- 50 1.050e-06 3.593e-07
50-150 1.574e-06 6.508e-07
15-150 3.180e-06 1.043e-06
Plot creation:
Wed Nov 23 05:38:28 EST 2016