batgrbproduct analysis for trigger=1114034
batgrbproduct Analysis for Trigger=1114034
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 Jul 2 04:04:00 EDT 2022
Host Name: batproc1
Current Working Dir: /local/data/bat1/prebascript/trigger1114034/GCN5_download_cron
======================================================================
Trigger: 01114034 Segment: 000
BAT Trigger Time: 678344007.488 [s; MET]
Trigger Stop: 678344023.872 [s; MET]
UTC: 2022-07-01T04:52:58.072320 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 242.477608992064 Dec: 55.4205425555552 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.65
Image Trigger?: NO
Rate S/N Ratio: 9.16515138991168 [ if not an image trigger ]
Image S/N Ratio: 7.65
Flight Position: [ source = BAT ]
RA: 242.477608992064 Dec: 55.4205425555552 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 242.473826194437 Dec: 55.4357981282054 [deg; J2000]
{ 16h 09m 53.7s , +55d 26' 08.9" }
+/- 2.54809900981874 [arcmin] (estimated 90% radius based on SNR)
+/- 1.83097652518061 [arcmin] (formal 1-sigma fit error)
SNR: 7.99483272145322
Angular difference between Flight and Ground position is 0.924351 arcmin
Partial Coding Fraction: 0.5625 [ including projection effects ]
Duration
T90: 5.76800000667572 +/- 1.13296065563698
Measured from: -1.07999992370605
to: 4.68800008296967 [s; relative to TRIGTIME]
T50: 3.18799996376038 +/- 1.35718682480598
Measured from: 0.608000040054321
to: 3.7960000038147 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 3.64800000190735
to: 4.64800000190735 [s; relative to TRIGTIME]
Total Fluence
Measured from: -1.39600002765656
to: 4.82799994945526 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.063930 0.092012 0.105891 0.030188
0.019754 0.020507 0.018154 0.015181 [error]
Peak 0.024042 0.040848 0.014216 -0.001645
0.008066 0.008387 0.007417 0.005698 [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 2.12e-08 4.23e-08 6.56e-08 2.24e-07 1.83e-07 3.53e-07 erg/cm2
Error 7.79e-09 9.89e-09 1.65e-08 1.19e-07 4.17e-08 1.31e-07 erg/cm2
Peak flux Power-law 3.79e-01 2.35e-01 9.41e-02 5.07e-02 7.35e-01 7.59e-01 ph/cm2/s
Error 1.33e-01 7.25e-02 5.27e-02 5.97e-02 2.10e-01 2.20e-01 ph/cm2/s
Fluence Cutoff-PL 1.52e-08 4.80e-08 7.45e-08 4.83e-08 1.70e-07 1.86e-07 erg/cm2
Error 9.38e-09 1.25e-08 2.06e-08 1.08e-07 4.34e-08 1.09e-07 erg/cm2
Peak flux Cutoff-PL 3.43e-01 2.88e-01 7.83e-02 5.21e-03 7.14e-01 7.14e-01 ph/cm2/s
Error 1.53e-01 1.10e-01 6.56e-02 4.82e-02 2.10e-01 2.11e-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 1.367 0.341 - - 3.02e-03 6.43e-04 50.790 57
CPL -0.227 1.978 74.4 220.4 1.72e-02 9.77e-02 47.740 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 2.324 0.585 - - 4.15e-03 1.80e-03 51.990 57
CPL 0.535 3.825 30.2 0.0 5.37e-02 0.00e+00 50.710 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 6.224 -1.396 4.828
T90 5.768 -1.080 4.688
T50 3.188 0.608 3.796
Peak 1.000 3.648 4.648
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
242.4738 +55.4358 0.0242 38.5 1.7 0.2953 8.0 TRIG_01114034
------------------------------------------
Foreground time interval of the image:
-1.396 4.828 (delta_t = 6.224 [sec])
Background time interval of the image:
-239.488 -218.228 (delta_t = 21.260 [sec])
-211.488 -177.008 (delta_t = 34.480 [sec])
-175.488 -122.436 (delta_t = 53.052 [sec])
-121.488 -120.668 (delta_t = 0.820 [sec])
-119.488 -112.478 (delta_t = 7.010 [sec])
-111.488 -51.058 (delta_t = 60.430 [sec])
-49.488 -47.058 (delta_t = 2.430 [sec])
-45.488 -1.396 (delta_t = 44.092 [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 -1.396 sec. to 4.828 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.36681 ( -0.342914 0.339353 )
Norm@50keV : 3.02395E-03 ( -0.000643506 0.000642526 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.79 using 59 PHA bins.
# Reduced chi-squared = 0.8910 for 57 degrees of freedom
# Null hypothesis probability = 7.058847e-01
Photon flux (15-150 keV) in 6.224 sec: 0.365586 ( -0.0804384 0.0809421 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.83137e-07 ( -4.14658e-08 4.19478e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -1.396 sec. to 4.828 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.227365 ( -2.39807 1.55818 )
Epeak [keV] : 74.4378 ( -19.6697 421.098 )
Norm@50keV : 1.72169E-02 ( -0.0172168 0.178211 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.74 using 59 PHA bins.
# Reduced chi-squared = 0.8525 for 56 degrees of freedom
# Null hypothesis probability = 7.760441e-01
Photon flux (15-150 keV) in 6.224 sec: 0.343843 ( -0.083706 0.084076 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.70081e-07 ( -4.25305e-08 4.4191e-08 ) ergs/cm2
Band function
Time interval is from -1.396 sec. to 4.828 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.226555 ( -1.52775 2.27404 )
beta : -10.0000 ( 10 2.13163e-14 )
Epeak [keV] : 74.4417 ( -18.676 232.248 )
Norm@50keV : 1.72030E-02 ( -0.017203 0.177965 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.74 using 59 PHA bins.
# Reduced chi-squared = 0.8680 for 55 degrees of freedom
# Null hypothesis probability = 7.457272e-01
Photon flux (15-150 keV) in 6.224 sec: 0.348391 ( ) 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] : 17.0764 (-3.40048 4.48206)
R^2/D10^2 : 2.90540E-02 (-0.0162847 0.033923)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.61 using 59 PHA bins.
# Reduced chi-squared = 0.8529 for 57 degrees of freedom
# Null hypothesis probability = 7.776431e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.073e-08 4.933e-09
25- 50 4.763e-08 1.797e-08
50-150 9.930e-08 4.028e-08
15-150 1.577e-07 5.490e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.363 (-92.1143 -199.363)
Norm : 1.53854 (-0.326084 0.326084)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.384e-08 1.403e-08
25- 50 4.587e-08 2.693e-08
50-150 1.006e-07 5.931e-08
15-150 1.703e-07 1.015e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.00931 (-5.98812 -5.98812)
R1^2/D10^2 : 0.286900 (-0.290664 1.87581)
kT2 [keV] : 19.4532 (-5.07416 -19.4479)
R2^2/D10^2 : 1.67969E-02 (-0.0168218 0.0361908)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.630e-08 1.099e-08
25- 50 4.628e-08 2.500e-08
50-150 1.061e-07 6.398e-08
15-150 1.687e-07 9.090e-08
Peak spectrum fit
Power-law model
Time interval is from 3.648 sec. to 4.648 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.32391 ( -0.511578 0.657783 )
Norm@50keV : 4.14711E-03 ( -0.00183369 0.00177465 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.99 using 59 PHA bins.
# Reduced chi-squared = 0.9122 for 57 degrees of freedom
# Null hypothesis probability = 6.629134e-01
Photon flux (15-150 keV) in 1 sec: 0.734507 ( -0.209464 0.20957 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.98083e-08 ( -1.38399e-08 1.48946e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 3.648 sec. to 4.648 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.535365 ( -6.04878 1.60033 )
Epeak [keV] : 30.2438 ( )
Norm@50keV : 5.37087E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.71 using 59 PHA bins.
# Reduced chi-squared = 0.9056 for 56 degrees of freedom
# Null hypothesis probability = 6.746444e-01
Photon flux (15-150 keV) in 1 sec: 0.714038 ( -0.208971 0.210232 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.54752e-08 ( -1.20959e-08 1.56887e-08 ) ergs/cm2
Band function
Time interval is from 3.648 sec. to 4.648 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.573253 ( -2.41998 0.545718 )
beta : -9.37167 ( 9.37167 19.3716 )
Epeak [keV] : 30.2374 ( -13.9545 30.2322 )
Norm@50keV : 5.06268E-02 ( -0.0543418 2.92618e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.71 using 59 PHA bins.
# Reduced chi-squared = 0.9221 for 55 degrees of freedom
# Null hypothesis probability = 6.389601e-01
Photon flux (15-150 keV) in 1 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 3.57197e-08 ( 0 0 ) ergs/cm2
Single BB
XSPEC: quit
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 8.21961 (-2.12005 2.8101)
R^2/D10^2 : 0.764240 (-0.76414 1.74043)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.519e-09 5.323e-09
25- 50 1.745e-08 1.106e-08
50-150 5.006e-09 3.774e-09
15-150 3.198e-08 2.039e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 39.4254 (-19.0621 49.65)
Norm : 4.90791 (-1.99164 3.79851)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.121e-08 5.326e-09
25- 50 1.466e-08 8.592e-09
50-150 1.116e-08 8.700e-09
15-150 3.704e-08 2.172e-08
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 0.927414 (-1.55757 10.6881)
R1^2/D10^2 : 1.38118E+06 (-1.42918e+06 -1.42918e+06)
kT2 [keV] : 8.83142 (-2.36773 2.95494)
R2^2/D10^2 : 0.548226 (-0.548827 1.0694)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.960e-09 5.065e-09
25- 50 1.670e-08 1.036e-08
50-150 6.445e-09 4.802e-09
15-150 3.310e-08 1.909e-08
Plot creation:
Sat Jul 2 04:08:36 EDT 2022