Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minutes to calcaulte
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
245.3697 -15.7203 0.0558 26.2 -109.6 -1.4625 -3.5 TRIG_01205103
------------------------------------------
Foreground time interval of the image:
145.500 312.692 (delta_t = 167.192 [sec])
Background time interval of the image:
-239.000 -217.510 (delta_t = 21.490 [sec])
-216.000 -214.640 (delta_t = 1.360 [sec])
-214.000 -151.170 (delta_t = 62.830 [sec])
-150.000 -148.590 (delta_t = 1.410 [sec])
-119.000 63.890 (delta_t = 182.890 [sec])
65.000 145.500 (delta_t = 80.500 [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
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
8 ms binning
From T100_start-3 s to T100_start+3 s
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
2 ms binning
From T100_start-1 s to T100_start+1 s
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
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 145.500 sec. to 312.692 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 5.77206 ( -0.472535 0.49799 )
Norm@50keV : 9.21000E-05 ( -3.62053e-05 5.20588e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.37 using 59 PHA bins.
# Reduced chi-squared = 0.9890 for 57 degrees of freedom
# Null hypothesis probability = 4.986061e-01
Photon flux (15-150 keV) in 167.2 sec: 0.301807 ( -0.0311182 0.0311595 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.53382e-06 ( -1.55487e-07 1.55572e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 145.500 sec. to 312.692 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 1.97124E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 263.99 using 59 PHA bins.
# Reduced chi-squared = 4.7141 for 56 degrees of freedom
# Null hypothesis probability = 9.814067e-29
Photon flux (15-150 keV) in 167.2 sec: 0.295703 ( -0.033241 0.032691 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.46807e-06 ( -1.56765e-07 1.53968e-07 ) ergs/cm2
Band function
Time interval is from 145.500 sec. to 312.692 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -8.15559 ( 2.64529 8.15559 )
beta : -5.83524 ( -0.451156 0.52689 )
Epeak [keV] : 379.303 ( -379.303 -379.303 )
Norm@50keV : 1.17466E-02 ( -0.00442995 0.00762681 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.42 using 59 PHA bins.
# Reduced chi-squared = 1.026 for 55 degrees of freedom
# Null hypothesis probability = 4.216292e-01
Photon flux (15-150 keV) in 167.2 sec: 0.435693 ( 6.56431 -0.051518 ) 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] : 2.63623 (-0.226992 0.25638)
R^2/D10^2 : 100.635 (-50.0635 101.267)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.14 using 59 PHA bins.
# Reduced chi-squared = 0.8796 for 57 degrees of freedom
# Null hypothesis probability = 7.281315e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.345e-06 3.561e-07
25- 50 1.220e-07 3.743e-08
50-150 6.393e-11 5.118e-11
15-150 1.468e-06 3.346e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 4.74880 (-0.609139 0.74079)
Norm : 83.6719 (-36.0642 66.4364)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.342e-06 3.148e-07
25- 50 1.505e-07 4.808e-08
50-150 5.978e-10 4.946e-10
15-150 1.493e-06 3.444e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.63409 (-0.240835 0.250193)
R1^2/D10^2 : 101.191 (-48.0451 103.911)
kT2 [keV] : 200.000 (-200 -200)
R2^2/D10^2 : 1.09790E-06 (-1.0979e-06 -1.0979e-06)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.347e-06 3.241e-07
25- 50 1.248e-07 3.987e-08
50-150 6.944e-11 5.959e-11
15-150 1.472e-06 3.464e-07
Peak spectrum fit
Power-law model
Time interval is from 309.936 sec. to 310.936 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.76051 ( -0.757198 1.09049 )
Norm@50keV : 3.25926E-03 ( -0.00209463 0.00229299 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.91 using 59 PHA bins.
# Reduced chi-squared = 1.016 for 57 degrees of freedom
# Null hypothesis probability = 4.416095e-01
Photon flux (15-150 keV) in 1 sec: 0.757493 ( -0.22708 0.227614 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.54381e-08 ( -1.40305e-08 1.66792e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 309.936 sec. to 310.936 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.97542 ( )
Epeak [keV] : 1.06773 ( )
Norm@50keV : 1.04497E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.53 using 59 PHA bins.
# Reduced chi-squared = 1.045 for 56 degrees of freedom
# Null hypothesis probability = 3.826991e-01
Photon flux (15-150 keV) in 1 sec: 0.753354 ( -0.223811 0.231868 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.5083e-08 ( -1.40924e-08 1.66832e-08 ) ergs/cm2
Band function
Time interval is from 309.936 sec. to 310.936 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -9.95192 ( 9.95192 9.95192 )
beta : -2.76052 ( -1.09083 0.75684 )
Epeak [keV] : 4.74507 ( -4.74507 -4.74507 )
Norm@50keV : 0.442974 ( -0.284675 0.311665 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.91 using 59 PHA bins.
# Reduced chi-squared = 1.053 for 55 degrees of freedom
# Null hypothesis probability = 3.685269e-01
Photon flux (15-150 keV) in 1 sec: 0.435693 ( 6.56431 -0.051518 ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Single BB
XSPEC: quit
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 5.25169 (-1.67967 2.56176)
R^2/D10^2 : 4.75259 (-4.74964 25.897)
(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 1.401e-08 8.420e-09
25- 50 1.031e-08 6.600e-09
50-150 5.288e-10 5.055e-10
15-150 2.485e-08 1.581e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 21.1932 (-12.0533 43.0975)
Norm : 8.33624 (-4.91303 19.0499)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.356e-08 8.234e-09
25- 50 1.240e-08 7.519e-09
50-150 4.088e-09 3.684e-09
15-150 3.005e-08 1.871e-08
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.04108 (-4.04305 2.86006)
R1^2/D10^2 : 13.8393 (-13.7959 -13.7959)
kT2 [keV] : 18.3497 (-18.3747 -18.3747)
R2^2/D10^2 : 1.72010E-02 (-0.0171085 5.49899)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.437e-08 8.365e-09
25- 50 1.032e-08 5.320e-09
50-150 1.334e-08 9.480e-09
15-150 3.803e-08 1.967e-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: 5.77206 ( -0.472535 0.49799 )
Norm@50keV : 9.21000E-05 ( -3.62053e-05 5.20588e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.37 using 59 PHA bins.
# Reduced chi-squared = 0.9890 for 57 degrees of freedom
# Null hypothesis probability = 4.986061e-01
Photon flux (15-150 keV) in 167.2 sec: 0.301807 ( -0.0311182 0.0311595 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.53382e-06 ( -1.55487e-07 1.55572e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 1.97124E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 263.99 using 59 PHA bins.
# Reduced chi-squared = 4.7141 for 56 degrees of freedom
# Null hypothesis probability = 9.814067e-29
Photon flux (15-150 keV) in 167.2 sec: 0.295703 ( -0.033241 0.032691 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.46807e-06 ( -1.56765e-07 1.53968e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -8.15559 ( 2.64529 8.15559 )
beta : -5.83524 ( -0.451156 0.52689 )
Epeak [keV] : 379.303 ( -379.303 -379.303 )
Norm@50keV : 1.17466E-02 ( -0.00442995 0.00762681 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.42 using 59 PHA bins.
# Reduced chi-squared = 1.026 for 55 degrees of freedom
# Null hypothesis probability = 4.216292e-01
Photon flux (15-150 keV) in 167.2 sec: 0.435693 ( 6.56431 -0.051518 ) 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) = 2.07e-07
S(50-100 keV) = 1.52e-08
T90 vs. Hardness ratio plot
T90 = 139.011999964714 sec.
Hardness ratio (energy fluence ratio) = 0.07343
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.0836061
Count Ratio (50-100 keV) / (15-25 keV) = -0.024058
Mask shadow pattern
IMX = -1.653418356611901E-01, IMY = 4.637899303707163E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
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:
-239.000000 -217.510000
-216.000000 -214.640000
-214.000000 -151.170000
-150.000000 -148.590000
-119.000000 63.890000
65.000000 145.500000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.2218 -60.7428 3.8 52.7 12.5 8.5261 3.1 7.7 Cen X-3
186.4298 -62.7423 6.5 47.9 4.3 3.4050 1.8 6.5 GX 301-2
244.9093 -15.5780 5.0 25.8 -110.2 2.9402 2.3 5.5 Sco X-1
256.0325 -37.7256 13.9 37.2 -68.0 1.6570 0.8 7.4 4U 1700-377
256.4641 -36.5443 15.4 37.2 -70.0 1.5170 0.7 7.4 GX 349+2
262.9002 -33.7328 8.6 41.8 -76.0 5.6754 1.3 7.6 GX 354-0
186.2573 -12.2318 3.6 31.6 84.7 6.0124 3.3 ------ UNKNOWN
177.8889 -53.5182 3.5 45.5 18.0 5.4152 3.3 ------ UNKNOWN
194.3907 -36.0919 3.0 26.3 32.7 4.4244 3.8 ------ UNKNOWN
226.5819 31.6180 2.8 52.3 174.4 14.7520 4.1 ------ UNKNOWN
247.7474 -25.1477 3.1 27.7 -88.4 4.9542 3.7 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
145.500000 312.692000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.1585 -60.6803 5.4 52.7 12.6 -2.4990 -2.1 5.8 Cen X-3
186.4518 -62.8049 6.0 48.0 4.2 -1.3695 -1.9 6.0 GX 301-2
244.9765 -15.5988 9.2 25.9 -110.1 -0.5270 -1.2 2.5 Sco X-1
256.1457 -37.7779 5.1 37.3 -67.9 -1.5719 -2.2 8.5 4U 1700-377
256.2995 -36.5647 13.3 37.1 -69.9 -0.6268 -0.9 10.7 GX 349+2
263.0158 -33.9468 7.1 41.9 -75.7 -2.2753 -1.6 6.9 GX 354-0
186.1525 -29.4815 2.8 30.5 50.9 1.8868 4.2 ------ UNKNOWN
241.0281 2.2612 3.2 31.6 -146.8 1.4992 3.6 ------ UNKNOWN
245.7408 -15.6727 1.9 26.6 -109.5 2.6044 6.0 ------ UNKNOWN
259.6975 14.7693 2.5 53.6 -141.9 8.1821 4.7 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
-60.000000 63.890000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.1787 -60.7505 4.1 52.7 12.5 5.2186 2.8 8.6 Cen X-3
186.4384 -62.7368 6.3 47.9 4.3 2.3293 1.8 6.3 GX 301-2
244.8663 -15.5863 9.0 25.8 -110.2 1.0552 1.3 7.3 Sco X-1
256.0246 -37.7160 16.0 37.2 -68.0 0.9385 0.7 7.9 4U 1700-377
256.3963 -36.5528 14.0 37.2 -70.0 1.1060 0.8 8.0 GX 349+2
262.9595 -33.7231 6.6 41.9 -76.0 4.9147 1.8 6.9 GX 354-0
186.2572 -12.2384 3.4 31.6 84.7 4.1341 3.4 ------ UNKNOWN
260.4665 12.2273 2.4 52.6 -138.8 14.6642 4.7 ------ UNKNOWN
Plot creation:
Fri Dec 29 10:20:35 EST 2023