batgrbproduct Analysis for Trigger=733103
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 Jan 16 09:15:56 EST 2017
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger733103/GCN5_download_cron
======================================================================
Trigger: 00733103 Segment: 000
BAT Trigger Time: 506206226.56 [s; MET]
Trigger Stop: 506206234.752 [s; MET]
UTC: 2017-01-15T20:50:08.094080 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 332.15417811853 Dec: 13.7808240200914 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.53
Image Trigger?: NO
Rate S/N Ratio: 8.60232526704263 [ if not an image trigger ]
Image S/N Ratio: 7.53
Flight Position: [ source = BAT ]
RA: 332.15417811853 Dec: 13.7808240200914 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 332.145588369114 Dec: 13.7507461302795 [deg; J2000]
{ 22h 08m 34.9s , +13d 45' 02.7" }
+/- 1.90193040339949 [arcmin] (estimated 90% radius based on SNR)
+/- 0.929479365465139 [arcmin] (formal 1-sigma fit error)
SNR: 12.1414043134364
Angular difference between Flight and Ground position is 1.872813 arcmin
Partial Coding Fraction: 1.015625 [ including projection effects ]
Duration
T90: 289.251999974251 +/- 38.0143646718568
Measured from: 5.48800009489059
to: 294.740000069141 [s; relative to TRIGTIME]
T50: 141.287999987602 +/- 40.4539543477995
Measured from: 24.3960000872612
to: 165.684000074863 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 4.97200000286102
to: 5.97200000286102 [s; relative to TRIGTIME]
Total Fluence
Measured from: 1.94800001382828
to: 307.744000017643 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.177183 0.082480 0.137472 0.103682
0.097847 0.106158 0.096104 0.097765 [error]
Peak 0.011095 0.013585 0.013039 0.012578
0.005358 0.005618 0.004895 0.004392 [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 5.14e-08 7.08e-08 7.19e-08 1.33e-07 2.37e-07 3.27e-07 erg/cm2
Error 3.97e-08 5.77e-08 8.50e-08 4.79e-07 2.02e-07 5.93e-07 erg/cm2
Peak flux Power-law 9.16e-02 9.93e-02 7.65e-02 9.67e-02 3.04e-01 3.64e-01 ph/cm2/s
Error 6.26e-02 4.30e-02 5.78e-02 1.22e-01 1.23e-01 1.56e-01 ph/cm2/s
Fluence Cutoff-PL 5.16e-08 7.07e-08 7.13e-08 1.30e-07 2.36e-07 3.23e-07 erg/cm2
Error 3.97e-08 5.48e-08 8.49e-08 4.74e-07 2.32e-07 5.89e-07 erg/cm2
Peak flux Cutoff-PL 8.16e-02 1.04e-01 8.05e-02 5.23e-02 2.96e-01 3.19e-01 ph/cm2/s
Error 7.93e-02 5.21e-02 4.64e-02 9.16e-02 1.33e-01 1.78e-01 ph/cm2/s
Fluence Band -------- -------- -------- -------- -------- -------- erg/cm2
Error -------- -------- -------- -------- -------- -------- erg/cm2
Peak flux Band 8.72e-02 1.02e-01 7.85e-02 7.12e-02 3.01e-01 3.39e-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 1.977 1.783 - - 8.42e-05 7.81e-05 50.880 57
CPL 1.960 3.491 346.6 0.0 8.54e-05 0.00e+00 50.880 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.375 0.774 - - 2.51e-03 1.05e-03 49.430 57
CPL 0.790 5.557 106.2 0.0 4.87e-03 1.61e+01 49.340 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: 291.584000 sec.
T50 in the 50-300 keV band: 211.264000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 305.796 1.948 307.744
T90 289.252 5.488 294.740
T50 141.288 24.396 165.684
Peak 1.000 4.972 5.972
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
332.1456 +13.7507 0.0158 6.1 -19.4 0.8976 12.1 TRIG_00733103
------------------------------------------
Foreground time interval of the image:
1.948 50.641 (delta_t = 48.693 [sec])
Background time interval of the image:
-239.560 -23.110 (delta_t = 216.450 [sec])
-21.560 1.948 (delta_t = 23.508 [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
1.948000 268.810000
269.440000 307.744000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.97655 ( -1.34162 2.2251 )
Norm@50keV : 8.42021E-05 ( -8.42006e-05 7.19216e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.88 using 59 PHA bins.
# Reduced chi-squared = 0.8926 for 57 degrees of freedom
# Null hypothesis probability = 7.026874e-01
Photon flux (15-150 keV) in 305.2 sec: 1.24960E-02 ( -0.012496 0.00758559 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.36719e-07 ( -1.75065e-07 2.28302e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
1.948000 268.810000
269.440000 307.744000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.95999 ( -5.32971 1.65275 )
Epeak [keV] : 346.614 ( )
Norm@50keV : 8.53735E-05 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.88 using 59 PHA bins.
# Reduced chi-squared = 0.9086 for 56 degrees of freedom
# Null hypothesis probability = 6.685556e-01
Photon flux (15-150 keV) in 305.2 sec: 1.24498E-02 ( -0.00750631 0.0075156 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.35556e-07 ( -2.35556e-07 2.29104e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
1.948000 268.810000
269.440000 307.744000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.40892 ( 1.41661 1.41661 )
beta : -2.00025 ( 2.01483 1.37811 )
Epeak [keV] : 25.6503 ( -24.7249 -24.7249 )
Norm@50keV : 2.27212E-04 ( -0.000231044 38876.8 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.87 using 59 PHA bins.
# Reduced chi-squared = 0.9250 for 55 degrees of freedom
# Null hypothesis probability = 6.329277e-01
Photon flux (15-150 keV) in 305.2 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] : 6.31185 (-3.60849 19.9942)
R^2/D10^2 : 3.26760E-02 (-0.0323874 1.57995)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.95 using 59 PHA bins.
# Reduced chi-squared = 0.9114 for 57 degrees of freedom
# Null hypothesis probability = 6.644805e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.658e-08 3.826e-08
25- 50 6.287e-08 5.060e-08
50-150 7.056e-09 7.712e-09
15-150 1.265e-07 8.802e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 65.5554 (-65.9117 -65.9117)
Norm : 6.25193E-02 (-0.0413523 0.492515)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.11 using 59 PHA bins.
# Reduced chi-squared = 0.8967 for 57 degrees of freedom
# Null hypothesis probability = 6.945245e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.858e-08 3.232e-08
25- 50 7.589e-08 5.358e-08
50-150 9.274e-08 8.996e-08
15-150 2.172e-07 1.779e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.03503 (-5.10876 10.5077)
R1^2/D10^2 : 7.16047E-02 (-0.0682439 -0.0682439)
kT2 [keV] : 33.8124 (-43.9241 -43.9241)
R2^2/D10^2 : 5.65391E-05 (-2.93043e-05 -2.93043e-05)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.54 using 59 PHA bins.
# Reduced chi-squared = 0.9189 for 55 degrees of freedom
# Null hypothesis probability = 6.456356e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.751e-08 4.120e-08
25- 50 5.477e-08 3.433e-08
50-150 1.425e-07 1.030e-07
15-150 2.548e-07 1.642e-07
Peak spectrum fit
Power-law model
Time interval is from 4.972 sec. to 5.972 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.37504 ( -0.754509 0.793301 )
Norm@50keV : 2.50810E-03 ( -0.00107024 0.00102665 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.43 using 59 PHA bins.
# Reduced chi-squared = 0.8673 for 57 degrees of freedom
# Null hypothesis probability = 7.515541e-01
Photon flux (15-150 keV) in 1 sec: 0.303755 ( -0.122366 0.122681 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.43617e-08 ( -1.11256e-08 1.17172e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 4.972 sec. to 5.972 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.790460 ( -5.02384 6.08933 )
Epeak [keV] : 106.215 ( -106.103 -106.103 )
Norm@50keV : 4.87461E-03 ( -0.00488254 32.1819 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.34 using 59 PHA bins.
# Reduced chi-squared = 0.8810 for 56 degrees of freedom
# Null hypothesis probability = 7.232691e-01
Photon flux (15-150 keV) in 1 sec: 0.295932 ( -0.138875 0.127998 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.33723e-08 ( -1.15577e-08 1.2456e-08 ) ergs/cm2
Band function
Time interval is from 4.972 sec. to 5.972 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.955101 ( -1.04392 5.01321 )
beta : -9.36931 ( 9.37134 9.37134 )
Epeak [keV] : 135.232 ( -98.5369 -135.008 )
Norm@50keV : 3.96114E-03 ( -0.00210517 0.00676956 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.35 using 59 PHA bins.
# Reduced chi-squared = 0.8973 for 55 degrees of freedom
# Null hypothesis probability = 6.894202e-01
Photon flux (15-150 keV) in 1 sec: 0.300753 0.299231 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 2.35808e-08 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 16.2640 (-6.03435 12.0194)
R^2/D10^2 : 2.73361E-02 (-0.0273361 0.104715)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.94 using 59 PHA bins.
# Reduced chi-squared = 0.8761 for 57 degrees of freedom
# Null hypothesis probability = 7.348896e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.490e-09 9.845e-10
25- 50 6.355e-09 3.932e-09
50-150 1.182e-08 8.250e-09
15-150 1.967e-08 1.296e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.362 (-199.363 -199.363)
Norm : 1.24487 (-0.499483 0.499921)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.55 using 59 PHA bins.
# Reduced chi-squared = 0.8693 for 57 degrees of freedom
# Null hypothesis probability = 7.477684e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.100e-09 2.013e-09
25- 50 5.963e-09 3.862e-09
50-150 1.308e-08 8.495e-09
15-150 2.214e-08 1.465e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 0.167242 (0.822496 -0.167242)
R1^2/D10^2 : 4.89655E+12 (-4.89655e+12 -4.89655e+12)
kT2 [keV] : 16.2634 (-6.03379 12.02)
R2^2/D10^2 : 2.73392E-02 (-0.0273392 0.104712)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.94 using 59 PHA bins.
# Reduced chi-squared = 0.9080 for 55 degrees of freedom
# Null hypothesis probability = 6.678975e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 0.000e+00 0.000e+00
25- 50 0.000e+00 0.000e+00
50-150 0.000e+00 0.000e+00
15-150 0.000e+00 0.000e+00
Plot creation:
Mon Jan 16 09:21:59 EST 2017