Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minute to calcaulte
Image
Pre-slew 15.0-350.0 keV image (Event data)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
192.8909 17.1018 0.0342 11.4447 147.5529 0.5221035 5.647 TRIG_01061554
Foreground time interval of the image:
0.096 43.845 (delta_t = 43.749 [sec])
Background time interval of the image:
-239.456 0.096 (delta_t = 239.552 [sec])
Lightcurves
Notes:
- 1) The mask-weighted light curves are using the flight position.
- 2) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
- 3) 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.
- 4) 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.
- 5) 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)
Quad-rate summed light curves (from T0-300s to T0+1000s)
Spectral Evolution
Spectra
Notes:
- 1) The fitting includes the systematic errors.
- 2) When the burst includes telescope slew time periods, the fitting uses an average response file made from multiple 5-s response files through out the slew time plus single time preiod for the non-slew times, and weighted by the total counts in the corresponding time period using addrmf. An average response file is needed becuase a spectral fit using 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.
Time averaged spectrum fit using the average DRM
Power-law model
Time interval is from 0.096 sec. to 432.400 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.40945 ( -0.494452 0.5105 )
Norm@50keV : 2.06194E-04 ( -6.39373e-05 6.29256e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 39.75 using 59 bins.
Reduced chi-squared = 0.697368
# Null hypothesis probability of 9.60e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 432.3 sec: 2.51652E-02 ( -0.0074806 0.0074901 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.59814e-07 ( -2.89657e-07 3.01675e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.096 sec. to 432.400 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.108394 ( -3.35037 1.67681 )
Epeak [keV] : 72.1678 ( -28.395 -72.0194 )
Norm@50keV : 9.37186E-04 ( -0.000946202 0.0341804 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 38.53 using 59 bins.
Reduced chi-squared = 0.688036
# Null hypothesis probability of 9.64e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 432.3 sec: 2.39578E-02 ( -0.0077259 0.0077241 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.85174e-07 ( -2.84188e-07 3.20496e-07 ) ergs/cm2
Band function
Time interval is from 0.096 sec. to 432.400 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : ( )
beta : ( )
Epeak [keV] : ( )
Norm@50keV : ( )
------------------------------------------------------------
Photon flux (15-150 keV) in 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] : 15.7996 (-4.5519 6.70327)
R^2/D10^2 : 2.54150E-03 (-0.00254102 0.00560106)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 39.33 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.64e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.686e-08 3.614e-08
25- 50 2.367e-07 1.445e-07
50-150 4.110e-07 2.624e-07
15-150 7.045e-07 4.120e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.363 (-199.363 -199.363)
Norm : 0.103693 (-0.0305459 0.030546)
------------------------------------------------------------
#Fit statistic : Chi-Squared 39.46 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.63e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.116e-07 7.042e-08
25- 50 2.147e-07 1.284e-07
50-150 4.709e-07 2.821e-07
15-150 7.972e-07 4.816e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.25950 (-5.25996 -5.25996)
R1^2/D10^2 : 4.26361E-02 (-0.042594 -0.042594)
kT2 [keV] : 18.9641 (-18.9556 -18.9556)
R2^2/D10^2 : 1.20886E-03 (-0.00121093 0.00484608)
------------------------------------------------------------
#Fit statistic : Chi-Squared 38.16 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.59e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.162e-08 5.851e-08
25- 50 2.179e-07 1.220e-07
50-150 4.712e-07 2.784e-07
15-150 7.808e-07 4.381e-07
Peak spectrum fit
Power-law model
Time interval is from 0.972 sec. to 1.972 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.15198 ( -0.552363 0.508623 )
Norm@50keV : 4.87006E-03 ( -0.00137411 0.00137411 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 70.80 using 59 bins.
Reduced chi-squared = 1.24211
# Null hypothesis probability of 1.03e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 0.568083 ( -0.162269 0.162631 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.01095e-08 ( -1.60452e-08 1.65666e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.972 sec. to 1.972 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.15271 ( -0.559875 0.507101 )
Epeak [keV] : 9999.36 ( -9999.36 -9999.36 )
Norm@50keV : 4.89331E-03 ( -0.00138378 0.0539122 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 70.81 using 59 bins.
Reduced chi-squared = 1.26446
# Null hypothesis probability of 8.79e-02 with 56 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 0.570808 ( -0.17269 0.165905 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.05068e-08 ( -1.93086e-08 1.15615e-08 ) ergs/cm2
Band function
Time interval is from 0.972 sec. to 1.972 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : ( )
beta : ( )
Epeak [keV] : ( )
Norm@50keV : ( )
------------------------------------------------------------
Photon flux (15-150 keV) in 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] : 15.1959 (-5.0902 10.7036)
R^2/D10^2 : 6.30800E-02 (-0.0627591 0.189477)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 74.48 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 5.99e-02 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.043e-09 1.922e-09
25- 50 1.224e-08 7.375e-09
50-150 1.934e-08 1.236e-08
15-150 3.462e-08 2.241e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.358 (-108.973 -199.362)
Norm : 2.30067 (-0.664709 0.666037)
------------------------------------------------------------
#Fit statistic : Chi-Squared 72.47 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 8.13e-02 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.729e-09 3.585e-09
25- 50 1.102e-08 6.820e-09
50-150 2.417e-08 1.461e-08
15-150 4.092e-08 2.573e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 9.87121 (-3.33517 4.27069)
R1^2/D10^2 : 0.221183 (-0.173669 0.740957)
kT2 [keV] : 199.363 (-199.363 -199.363)
R2^2/D10^2 : 1.15380E-04 (-6.28158e-05 0.00508775)
------------------------------------------------------------
#Fit statistic : Chi-Squared 68.18 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.09e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.517e-09 2.858e-09
25- 50 1.192e-08 7.100e-09
50-150 3.591e-08 8.800e-09
15-150 5.235e-08 1.780e-08
Pre-slew spectrum (Pre-slew PHA with pre-slew DRM)
Power-law model
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.42695 ( -0.446748 0.454203 )
Norm@50keV : 7.69790E-04 ( -0.000206286 0.000201739 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 54.27 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 5.78e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 43.75 sec: 9.43357E-02 ( -0.0237874 0.0238022 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.23683e-07 ( -9.50622e-08 9.90329e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.12922 ( -1.96049 1.39035 )
Epeak [keV] : 137.595 ( -137.569 -137.569 )
Norm@50keV : 1.11119E-03 ( -0.000542357 0.0116157 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 54.16 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 5.45e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 43.75 sec: 9.32179E-02 ( -0.0244014 0.0243781 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.13882e-07 ( -1.06509e-07 1.06424e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : ( )
beta : ( )
Epeak [keV] : ( )
Norm@50keV : ( )
------------------------------------------------------------
Photon flux (15-150 keV) in sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 2.03e-07
S(50-100 keV) = 3.06e-07
T90 vs. Hardness ratio plot
T90 = 417.907999873161 sec.
Hardness ratio (energy fluence ratio) = 1.50739
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.87362
Count Ratio (50-100 keV) / (15-25 keV) = 1.73756
Mask shadow pattern
IMX = -1.708432704522193E-01, IMY = -1.086174351391151E-01
TIME vs. PHA plot around the trigger time
TIME vs. DetID plot around the trigger time
100 us light curve (15-350 keV)
Spacecraft aspect plot
Bright source in the pre-burst/pre-slew/post-slew images
Pre-burst image of 15-350 keV band
Time interval of the image:
-239.456000 0.096000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
196.5383 12.0661 3.1 17.4 141.3 1.0914 3.7 ------ UNKNOWN
219.7894 79.2356 3.0 53.0 -6.1 2.4517 3.8 ------ UNKNOWN
160.6724 -22.2244 2.8 57.1 -161.5 5.1144 4.1 ------ UNKNOWN
160.1492 -15.9393 3.2 52.0 -157.0 2.7559 3.7 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.096000 43.844590
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
163.1471 -11.1695 2.4 46.4 -156.9 0.8467 4.8 ------ UNKNOWN
132.3664 75.1915 2.2 54.7 -28.1 2.2181 5.2 ------ UNKNOWN
140.4065 38.0238 2.6 41.4 -76.1 1.5535 4.5 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
74.844590 437.844600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
229.6090 41.8736 4.5 39.9 30.3 1.6461 2.6 ------ UNKNOWN
229.9444 46.2706 2.4 42.2 24.6 3.4019 4.9 ------ UNKNOWN
Plot creation:
Sat Jul 30 06:53:34 EDT 2022