batgrbproduct analysis for trigger=1003313
batgrbproduct Analysis for Trigger=1003313
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): Sat Oct 31 22:01:55 EDT 2020
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger1003313/batgroup_hand_proc
======================================================================
Trigger: 01003313 Segment: 000
BAT Trigger Time: 625846821.12 [s; MET]
Trigger Stop: 625846824.192 [s; MET]
UTC: 2020-10-31T14:19:55.218940 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 254.276630580952 Dec: -9.1401823646386 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 6.58
Image Trigger?: NO
Rate S/N Ratio: 13.9283882771841 [ if not an image trigger ]
Image S/N Ratio: 6.58
Flight Position: [ source = BAT ]
RA: 254.276630580952 Dec: -9.1401823646386 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 254.190325646069 Dec: -9.14727448343323 [deg; J2000]
{ 16h 56m 45.7s , -09d 08' 50.2" }
+/- 6.65365846762691 [arcmin] (estimated 90% radius based on SNR)
+/- 3.37813468395785 [arcmin] (formal 1-sigma fit error)
SNR: 2.02916638348924
Angular difference between Flight and Ground position is 5.130173 arcmin
Partial Coding Fraction: 0.7734375 [ including projection effects ]
Duration
T90: 3.07200002670288 +/-
Measured from: 0
to: 3.07200002670288 [s; relative to TRIGTIME]
T50: 3.07200002670288 +/-
Measured from: 0
to: 3.07200002670288 [s; relative to TRIGTIME]
WARNING: battblocks failed. Used TDRSS fore/background intervals
Fluence
Peak Flux (peak 3.07200002670288 second)
Measured from: 0
to: 3.07200002670288 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0
to: 3.07200002670288 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total -0.000661 -0.023823 0.042462 0.029811
0.013240 0.012032 0.010031 0.008493 [error]
Peak -0.000661 -0.023823 0.042462 0.029811
0.013240 0.012032 0.010031 0.008493 [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 7.00e-10 4.09e-09 2.08e-08 4.63e-07 6.68e-08 4.92e-07 erg/cm2
Error 1.18e-09 4.36e-09 1.51e-08 5.36e-07 2.50e-08 5.30e-07 erg/cm2
Peak flux Power-law 7.05e-03 2.19e-02 5.56e-02 4.04e-01 1.51e-01 4.88e-01 ph/cm2/s
Error 1.21e-02 2.40e-02 4.10e-02 4.02e-01 9.14e-02 3.75e-01 ph/cm2/s
Fluence Cutoff-PL 3.23e-11 4.01e-09 3.69e-08 1.06e-08 5.11e-08 5.16e-08 erg/cm2
Error 6.21e-10 4.26e-09 1.30e-08 3.32e-07 2.72e-08 3.10e-07 erg/cm2
Peak flux Cutoff-PL 3.07e-04 2.01e-02 1.03e-01 1.72e-02 1.40e-01 1.41e-01 ph/cm2/s
Error 3.81e-03 2.15e-02 4.72e-02 2.63e-01 5.70e-02 2.69e-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 -0.350 1.301 - - 9.69e-04 8.33e-04 94.290 0
CPL -9.957 -0.204 80.5 73.3 2.96e+00 7.30e+00 91.970 0
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL -0.350 1.301 - - 9.69e-04 8.33e-04 94.290 0
CPL -9.957 -0.204 80.5 70.1 2.96e+00 7.30e+00 0.002 0
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 3.072 0.000 3.072
T90 3.072 0.000 3.072
T50 3.072 0.000 3.072
Peak 3.072 0.000 3.072
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
254.1903 -9.1473 0.0953 20.9 -57.2 0.0461 2.0 TRIG_01003313
------------------------------------------
Foreground time interval of the image:
0.000 3.072 (delta_t = 3.072 [sec])
Background time interval of the image:
-179.120 -134.898 (delta_t = 44.222 [sec])
-119.120 -13.120 (delta_t = 106.000 [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 0.000 sec. to 3.072 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.349722 ( -1.8039 0.797621 )
Norm@50keV : 9.68737E-04 ( -0.00089214 0.000773553 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 94.29 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.38e-03 with 57 degrees of freedom
Photon flux (15-150 keV) in 3.072 sec: 0.151137 ( -0.119652 0.0707803 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.67536e-08 ( -2.49869e-08 2.49945e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 3.072 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -9.95662 ( 9.98116 9.57374 )
Epeak [keV] : 80.4761 ( -13.0759 133.61 )
Norm@50keV : 2.96137 ( -3.01635 11.5913 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 91.97 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.74e-03 with 56 degrees of freedom
Photon flux (15-150 keV) in 3.072 sec: 0.140245 0.139124 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 2.72376e-16 ( 0 0 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 3.072 sec.
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.123731 ( 0.141264 0.141264 )
beta : 0.352750 ( -0.801774 1.80283 )
Epeak [keV] : 21.3456 ( -21.4078 -21.4078 )
Norm@50keV : 1.48868E-03 ( -0.00149132 2090.67 )
------------------------------------------------------------
Photon flux (15-150 keV) in 3.072 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] : 58.1291 (-58.1703 -58.1703)
R^2/D10^2 : 6.04410E-04 (-0.00060333 0.00297972)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 93.86 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.52e-03 with 57 degrees of freedom
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
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-111.14 -200)
Norm : 0.473308 (-0.368588 0.368588)
------------------------------------------------------------
#Fit statistic : Chi-Squared 109.44 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.67e-05 with 57 degrees of freedom
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
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.00000 (-4 -4)
R1^2/D10^2 : 0.0 (0 4368.94)
kT2 [keV] : 58.7357 (-30.3079 -58.7357)
R2^2/D10^2 : 5.91259E-04 (-0.000538914 0.00299216)
------------------------------------------------------------
#Fit statistic : Chi-Squared 93.86 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 8.54e-04 with 55 degrees of freedom
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
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 3.072 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.349722 ( -1.8039 0.797621 )
Norm@50keV : 9.68737E-04 ( -0.00089214 0.000773553 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 94.29 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.38e-03 with 57 degrees of freedom
Photon flux (15-150 keV) in 3.072 sec: 0.151137 ( -0.111931 0.0707719 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.67536e-08 ( -2.49869e-08 2.49945e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 3.072 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -9.95662 ( 9.98116 9.57374 )
Epeak [keV] : 80.4761 ( -13.0759 127.038 )
Norm@50keV : 2.96137 ( -3.01635 11.5913 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 91.97 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.74e-03 with 56 degrees of freedom
Photon flux (15-150 keV) in 3.072 sec: 0.140245 0.139124 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 2.72376e-16 ( 0 0 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 3.072 sec.
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.123731 ( 0.141264 0.141264 )
beta : 0.352750 ( -0.801774 1.80274 )
Epeak [keV] : 21.3456 ( -21.4078 -21.4078 )
Norm@50keV : 1.48868E-03 ( -0.00149132 2090.66 )
------------------------------------------------------------
Photon flux (15-150 keV) in 3.072 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] : 58.1291 (-58.1703 -58.1703)
R^2/D10^2 : 6.04410E-04 (-0.00060333 0.00297972)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 93.86 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.52e-03 with 57 degrees of freedom
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
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-111.14 -200)
Norm : 0.473308 (-0.368588 0.368588)
------------------------------------------------------------
#Fit statistic : Chi-Squared 109.44 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.67e-05 with 57 degrees of freedom
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
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.00000 (-4 -4)
R1^2/D10^2 : 0.0 (0 9276.51)
kT2 [keV] : 58.7357 (-30.3079 -58.7357)
R2^2/D10^2 : 5.91259E-04 (-0.000538914 0.00299216)
------------------------------------------------------------
#Fit statistic : Chi-Squared 93.86 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 8.54e-04 with 55 degrees of freedom
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:
Sat Oct 31 22:24:49 EDT 2020