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
300.5114 +35.0189 0.0072 11.5 164.5 4.8797 26.8 TRIG_01216748
------------------------------------------
Foreground time interval of the image:
-27.099 71.401 (delta_t = 98.500 [sec])
Background time interval of the image:
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
Multiple GTIs in the spectrum
tstart tstop
-86.472000 424.640000
430.000000 483.050000
601.000000 663.134800
781.000000 784.000000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.88762 ( -0.044475 0.0446577 )
Norm@50keV : 2.67034E-03 ( -6.14259e-05 6.13548e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 76.62 using 59 PHA bins.
# Reduced chi-squared = 1.344 for 57 degrees of freedom
# Null hypothesis probability = 4.256662e-02
Photon flux (15-150 keV) in 629.3 sec: 0.381224 ( -0.00988983 0.00993623 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.54484e-05 ( -3.54483e-07 3.54808e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-86.472000 424.640000
430.000000 483.050000
601.000000 663.134800
781.000000 784.000000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.32007 ( -0.203707 0.194935 )
Epeak [keV] : 60.5204 ( -5.08617 7.61433 )
Norm@50keV : 5.03338E-03 ( -0.000964842 0.00126078 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.94 using 59 PHA bins.
# Reduced chi-squared = 0.8918 for 56 degrees of freedom
# Null hypothesis probability = 7.021916e-01
Photon flux (15-150 keV) in 629.3 sec: 0.362198 ( -0.011438 0.011524 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.47062e-05 ( -4.28994e-07 4.29308e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
-86.472000 424.640000
430.000000 483.050000
601.000000 663.134800
781.000000 784.000000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.32512 ( -0.183299 0.184106 )
beta : -9.37048 ( 9.37139 19.3714 )
Epeak [keV] : 60.7220 ( -5.1424 7.32523 )
Norm@50keV : 4.99918E-03 ( -0.000921061 0.00049656 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.95 using 59 PHA bins.
# Reduced chi-squared = 0.9081 for 55 degrees of freedom
# Null hypothesis probability = 6.675978e-01
Photon flux (15-150 keV) in 629.3 sec: 0.362639 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.4758e-05 ( -1.47536e-05 -4.17037e-07 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 13.1638 ( )
R^2/D10^2 : 5.95356E-02 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 365.12 using 59 PHA bins.
# Reduced chi-squared = 6.4057 for 57 degrees of freedom
# Null hypothesis probability = 1.639663e-46
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.377e-06 6.167e-08
25- 50 4.805e-06 1.347e-07
50-150 5.303e-06 2.432e-07
15-150 1.148e-05 2.675e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 95.1040 (-7.63878 8.77964)
Norm : 1.65161 (-0.0321767 0.0661101)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.715e-06 1.378e-07
25- 50 4.647e-06 1.366e-07
50-150 7.316e-06 1.561e-06
15-150 1.468e-05 1.592e-06
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.99463 (-0.587358 0.607834)
R1^2/D10^2 : 0.421195 (-0.105061 0.155335)
kT2 [keV] : 22.0295 (-1.76396 2.20601)
R2^2/D10^2 : 6.26519E-03 (-0.00203616 0.0026321)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.436e-06 1.863e-07
25- 50 4.719e-06 2.052e-07
50-150 7.261e-06 5.192e-07
15-150 1.442e-05 7.898e-07
Peak spectrum fit
Power-law model
Time interval is from 340.132 sec. to 341.132 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.68554 ( -0.381308 0.400393 )
Norm@50keV : 5.62134E-03 ( -0.00132227 0.00125492 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.83 using 59 PHA bins.
# Reduced chi-squared = 0.9970 for 57 degrees of freedom
# Null hypothesis probability = 4.814414e-01
Photon flux (15-150 keV) in 1 sec: 0.742844 ( -0.145844 0.145887 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.21088e-08 ( -1.25452e-08 1.30188e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 340.132 sec. to 341.132 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.21840 ( -1.02172 0.670572 )
Epeak [keV] : 81.6756 ( )
Norm@50keV : 2.92175E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.87 using 59 PHA bins.
# Reduced chi-squared = 0.9976 for 56 degrees of freedom
# Null hypothesis probability = 4.798524e-01
Photon flux (15-150 keV) in 1 sec: 0.743087 ( -0.14573 0.145514 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.22199e-08 ( -1.26864e-08 1.27708e-08 ) ergs/cm2
Band function
Time interval is from 340.132 sec. to 341.132 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.92156 ( -4.92156 -4.92156 )
beta : -1.80562 ( -0.639675 0.447161 )
Epeak [keV] : 22.8496 ( -22.8496 7.20369 )
Norm@50keV : 1105.82 ( -216.243 5.78361e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.63 using 59 PHA bins.
# Reduced chi-squared = 1.030 for 55 degrees of freedom
# Null hypothesis probability = 4.137844e-01
Photon flux (15-150 keV) in 1 sec: 0.387342 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 2.44959e-08 ( 0 0 ) ergs/cm2
Single BB
XSPEC: quit
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 9.09755 (-2.18646 3.65883)
R^2/D10^2 : 0.473598 (-0.337371 0.88822)
(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 7.674e-09 2.862e-09
25- 50 1.659e-08 6.799e-09
50-150 6.539e-09 3.792e-09
15-150 3.080e-08 1.173e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 146.030 (-89.7558 -147.181)
Norm : 3.05320 (-0.653842 1.03214)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.859e-09 4.511e-09
25- 50 1.451e-08 8.240e-09
50-150 2.832e-08 1.766e-08
15-150 5.069e-08 3.009e-08
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.80734 (-1.80022 1.33237)
R1^2/D10^2 : 1.25461 (-0.838921 1.31996)
kT2 [keV] : 74.7141 (-48.0392 -74.7141)
R2^2/D10^2 : 6.06306E-04 (-0.000528806 0.00750516)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.331e-09 5.235e-09
25- 50 1.382e-08 7.908e-09
50-150 3.648e-08 2.203e-08
15-150 5.963e-08 3.086e-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: 1.84272 ( -0.0771503 0.0780968 )
Norm@50keV : 2.89025E-03 ( -0.000130727 0.00013002 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 83.22 using 59 PHA bins.
# Reduced chi-squared = 1.460 for 57 degrees of freedom
# Null hypothesis probability = 1.331528e-02
Photon flux (15-150 keV) in 98.5 sec: 0.405060 ( -0.0173913 0.0174246 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.61795e-06 ( -1.19187e-07 1.19822e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.12329 ( -0.359873 0.332669 )
Epeak [keV] : 56.7580 ( -6.71823 12.0009 )
Norm@50keV : 6.89884E-03 ( -0.00224512 0.0037038 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.36 using 59 PHA bins.
# Reduced chi-squared = 1.221 for 56 degrees of freedom
# Null hypothesis probability = 1.244161e-01
Photon flux (15-150 keV) in 98.5 sec: 0.387456 ( -0.018913 0.01896 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.45176e-06 ( -1.37644e-07 1.39259e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.12324 ( -0.256009 0.443054 )
beta : -10.0000 ( 10 0 )
Epeak [keV] : 56.7468 ( -6.72547 12.0005 )
Norm@50keV : 6.89860E-03 ( -0.00224694 0.00370692 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.36 using 59 PHA bins.
# Reduced chi-squared = 1.243 for 55 degrees of freedom
# Null hypothesis probability = 1.065166e-01
Photon flux (15-150 keV) in 98.5 sec: 0.389369 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 2.45596e-06 ( 0 0 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 4.49e-06
S(50-100 keV) = 4.85e-06
T90 vs. Hardness ratio plot
T90 = 528.051999926567 sec.
Hardness ratio (energy fluence ratio) = 1.08018
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.20696
Count Ratio (50-100 keV) / (15-25 keV) = 0.676639
Mask shadow pattern
IMX = -1.959102390727347E-01, IMY = -5.438980963017170E-02
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:
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-27.099400 71.400590
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.6598 35.3646 7.3 35.3 73.5 0.7258 1.6 10.0 Her X-1
262.9867 -24.6564 6.6 58.0 -9.5 -1.7856 -1.7 5.5 GX 1+4
268.3749 -1.5421 4.1 36.4 3.9 0.6964 2.8 5.4 SW J1753.5-0127
270.4590 -25.0761 3.3 55.0 -16.8 2.0877 3.5 9.5 GX 5-1
270.2702 -25.7969 6.2 55.7 -17.0 -1.1691 -1.8 3.7 GRS 1758-258
273.8857 -13.9938 5.3 43.6 -14.1 -0.6487 -2.2 7.4 GX 17+2
275.8255 -30.3061 3.8 58.0 -24.5 -3.0931 -3.0 6.3 H1820-303
285.1295 -24.9509 13.9 50.7 -32.6 -0.4765 -0.8 5.4 HT1900.1-2455
288.8887 11.0661 6.8 14.7 -22.8 0.3117 1.7 9.0 GRS 1915+105
299.5581 35.3806 50.6 11.4 160.2 0.0418 0.2 10.9 Cyg X-1
307.8352 40.9678 0.0 19.7 169.2 0.1882 1.0 12.5 Cyg X-3
325.9516 38.3691 5.2 30.1 -167.3 -0.4531 -2.2 10.7 Cyg X-2
246.3334 6.5557 2.4 49.1 33.3 2.7652 4.8 ------ UNKNOWN
259.6787 -10.5371 2.6 48.8 4.5 1.5211 4.5 ------ UNKNOWN
300.5115 35.0188 0.4 11.5 164.5 4.8845 27.1 ------ UNKNOWN
288.0251 -7.5596 2.2 33.1 -32.1 1.2401 5.3 ------ UNKNOWN
355.2483 31.3377 2.5 53.7 -154.8 3.0961 4.7 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
114.600590 424.640000
430.000000 483.050000
601.000000 663.134800
781.000000 843.050000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.6330 35.3310 8.0 37.2 56.3 2.5886 1.5 8.6 Her X-1
268.3182 -1.5487 18.4 47.4 -1.5 0.8361 0.6 6.5 SW J1753.5-0127
274.1391 -14.0549 7.9 55.1 -16.2 3.2764 1.5 7.8 GX 17+2
288.8403 10.8983 7.3 26.4 -21.3 1.2577 1.6 3.8 GRS 1915+105
299.4625 35.0938 10.4 0.9 46.9 -0.8311 -1.1 9.0 Cyg X-1
308.3875 40.9257 0.0 8.6 176.2 0.6274 0.9 12.7 Cyg X-3
326.4154 38.2628 0.0 21.0 -154.4 1.0418 1.4 12.0 Cyg X-2
263.1143 33.9315 2.6 30.7 51.0 4.8655 4.5 ------ UNKNOWN
300.4778 35.0647 0.4 0.1 88.3 21.3678 28.6 ------ UNKNOWN
16.2272 43.2744 2.2 57.3 -170.9 16.8834 5.2 ------ UNKNOWN
10.5502 42.0303 2.0 53.7 -167.8 13.3157 5.7 ------ UNKNOWN
358.0211 24.4329 2.7 50.4 -142.2 10.7870 4.3 ------ UNKNOWN
Plot creation:
Thu Feb 22 19:21:33 EST 2024