batgrbproduct analysis for trigger=1030629
batgrbproduct Analysis for Trigger=1030629
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 v2.48
Process Start Time (local time): Fri Feb 5 11:59:36 EST 2021
Host Name: batproc1
Current Working Dir: /local/data/bat1/prebascript/trigger1030629/GCN5_download_cron
======================================================================
Trigger: 01030629 Segment: 000
BAT Trigger Time: 634216304.064 [s; MET]
Trigger Stop: 634216312.256 [s; MET]
UTC: 2021-02-05T11:11:17.610200 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 347.256750879694 Dec: 56.3124388241946 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 8.16
Image Trigger?: NO
Rate S/N Ratio: 8.94427190999916 [ if not an image trigger ]
Image S/N Ratio: 8.16
Flight Position: [ source = BAT ]
RA: 347.256750879694 Dec: 56.3124388241946 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 347.263627418555 Dec: 56.3114467620657 [deg; J2000]
{ 23h 09m 03.3s , +56d 18' 41.2" }
+/- 2.12073320448087 [arcmin] (estimated 90% radius based on SNR)
+/- 0.862987841715316 [arcmin] (formal 1-sigma fit error)
SNR: 10.3922540936333
Angular difference between Flight and Ground position is 0.236467 arcmin
Partial Coding Fraction: 0.1894531 [ including projection effects ]
Duration
T90: 22.7039999961853 +/- 4.18368643514569
Measured from: -3.46399986743927
to: 19.240000128746 [s; relative to TRIGTIME]
T50: 13.5039999485016 +/- 7.75573075446973
Measured from: 2.55200016498566
to: 16.0560001134872 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 5.98000001907349
to: 6.98000001907349 [s; relative to TRIGTIME]
Total Fluence
Measured from: -7.35199999809265
to: 20.0720000267029 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.658997 0.574135 0.258046 0.029212
0.081913 0.083869 0.072002 0.060097 [error]
Peak 0.088518 0.041580 0.028397 0.013411
0.016856 0.015907 0.014672 0.010849 [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 2.42e-07 2.79e-07 2.32e-07 3.23e-07 8.69e-07 1.08e-06 erg/cm2
Error 5.06e-08 4.51e-08 6.78e-08 1.82e-07 1.60e-07 2.69e-07 erg/cm2
Peak flux Power-law 9.63e-01 4.83e-01 1.49e-01 5.87e-02 1.63e+00 1.65e+00 ph/cm2/s
Error 3.83e-01 1.78e-01 1.17e-01 9.85e-02 4.77e-01 4.85e-01 ph/cm2/s
Fluence Cutoff-PL 2.32e-07 3.03e-07 2.17e-07 9.95e-08 8.18e-07 8.52e-07 erg/cm2
Error 5.49e-08 6.33e-08 8.89e-08 2.40e-07 1.81e-07 3.31e-07 erg/cm2
Peak flux Cutoff-PL 1.01e+00 4.58e-01 1.24e-01 4.08e-02 1.62e+00 1.65e+00 ph/cm2/s
Error 3.87e-01 1.82e-01 1.33e-01 1.00e-01 4.77e-01 4.94e-01 ph/cm2/s
Fluence Band 2.86e-07 3.26e-07 2.31e-07 2.59e-07 9.49e-07 1.11e-06 erg/cm2
Error -------- 5.44e-08 -------- -------- -------- -------- 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 2.270 0.306 - - 3.33e-03 7.19e-04 57.210 57
CPL 1.591 1.118 23.5 22.8 8.58e-03 6.48e-02 56.350 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 2.695 0.888 - - 7.32e-03 5.80e-03 48.280 57
CPL 1.973 0.000 1.7 0.0 1.81e-02 0.00e+00 49.610 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 27.424 -7.352 20.072
T90 22.704 -3.464 19.240
T50 13.504 2.552 16.056
Peak 1.000 5.980 6.980
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
347.2636 +56.3114 0.0185 50.6 11.9 1.7304 10.4 TRIG_01030629
------------------------------------------
Foreground time interval of the image:
-7.352 20.072 (delta_t = 27.424 [sec])
Background time interval of the image:
-239.064 -7.352 (delta_t = 231.712 [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 -7.352 sec. to 20.072 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.26968 ( -0.290062 0.322105 )
Norm@50keV : 3.33454E-03 ( -0.00073116 0.000706988 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 57.21 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 4.67e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 27.42 sec: 0.573073 ( -0.0901233 0.0901725 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.69052e-07 ( -1.57538e-07 1.61689e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -7.352 sec. to 20.072 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.59111 ( -1.85654 0.37964 )
Epeak [keV] : 23.4572 ( -22.6551 22.987 )
Norm@50keV : 8.58368E-03 ( -0.00860716 0.120929 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 56.35 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 4.62e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 27.42 sec: 0.562043 ( -0.091241 0.092399 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.1767e-07 ( -1.7633e-07 1.86601e-07 ) ergs/cm2
Band function
Time interval is from -7.352 sec. to 20.072 sec.
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.99408 ( -4.99408 -4.99408 )
beta : -2.46381 ( -0.499472 0.363455 )
Epeak [keV] : 21.3618 ( -21.3618 4.36226 )
Norm@50keV : 1995.17 ( -308.516 6.51561e+06 )
------------------------------------------------------------
Photon flux (15-150 keV) in 27.42 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 9.49387e-07 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 8.23361 (-1.40035 1.66493)
R^2/D10^2 : 0.559445 (-0.293669 0.635381)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 62.34 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 2.92e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.920e-07 5.646e-08
25- 50 3.530e-07 9.380e-08
50-150 1.018e-07 4.837e-08
15-150 6.467e-07 1.700e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 43.5634 (-14.5347 25.8916)
Norm : 3.51989 (-0.918256 1.36652)
------------------------------------------------------------
#Fit statistic : Chi-Squared 56.41 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 4.97e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.277e-07 5.433e-08
25- 50 3.104e-07 6.320e-08
50-150 2.629e-07 1.200e-07
15-150 8.010e-07 1.621e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.25456 (-3.13256 2.14701)
R1^2/D10^2 : 1.40804 (-0.922062 16.7533)
kT2 [keV] : 22.2123 (-19.2264 -22.3568)
R2^2/D10^2 : 5.69004E-03 (-0.00552225 0.237185)
------------------------------------------------------------
#Fit statistic : Chi-Squared 55.97 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 4.38e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.267e-07 1.306e-07
25- 50 3.071e-07 1.638e-07
50-150 3.032e-07 1.978e-07
15-150 8.370e-07 4.146e-07
Peak spectrum fit
Power-law model
Time interval is from 5.980 sec. to 6.980 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.69464 ( -0.736602 1.03898 )
Norm@50keV : 7.32124E-03 ( -0.00731984 0.00428933 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 48.28 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 7.88e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 1.62820 ( -0.476559 0.476559 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.77314e-08 ( -2.86065e-08 3.14452e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 5.980 sec. to 6.980 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.97318 ( )
Epeak [keV] : 1.68054 ( )
Norm@50keV : 1.80818E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared 49.61 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 7.14e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 1.62448 1.62741 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 7.83949e-08 ( -2.92576e-08 3.05381e-08 ) ergs/cm2
Band function
Time interval is from 5.980 sec. to 6.980 sec.
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.63701 ( 1.64649 1.64649 )
beta : -2.70688 ( 2.68319 0.724591 )
Epeak [keV] : 6.21556 ( -6.26834 -6.26834 )
Norm@50keV : 6.21423E-02 ( -0.0626488 1.15587e+07 )
------------------------------------------------------------
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] : 4.53129 (-1.20625 2.14085)
R^2/D10^2 : 20.6740 (-20.6758 84.7339)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 51.19 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 6.92e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.334e-08 1.945e-08
25- 50 1.694e-08 1.113e-08
50-150 4.179e-10 4.204e-10
15-150 5.070e-08 3.109e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 18.2021 (-10.2626 58.7468)
Norm : 21.0958 (-14.3362 58.5982)
------------------------------------------------------------
#Fit statistic : Chi-Squared 50.31 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 7.22e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.007e-08 1.852e-08
25- 50 2.442e-08 1.531e-08
50-150 6.213e-09 5.720e-09
15-150 6.070e-08 3.757e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.48113 (-1.24435 1.87594)
R1^2/D10^2 : 21.3809 (-17.5169 65.0612)
kT2 [keV] : 197.941 (-198.188 -198.188)
R2^2/D10^2 : 1.26394E-04 (-8.53589e-05 0.000993886)
------------------------------------------------------------
#Fit statistic : Chi-Squared 45.42 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 8.18e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.352e-08 1.947e-08
25- 50 1.696e-08 9.840e-09
50-150 3.617e-08 2.453e-08
15-150 8.665e-08 4.359e-08
Plot creation:
Fri Feb 5 12:06:23 EST 2021