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
245.0439 -15.5057 0.0117 17.4 99.1 3.2721 16.5 TRIG_01107209
------------------------------------------
Foreground time interval of the image:
-17.699 55.901 (delta_t = 73.600 [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
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 -116.984 sec. to 221.740 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 6.07915 ( -0.304726 0.308187 )
Norm@50keV : 9.69473E-05 ( -2.36513e-05 2.94006e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.64 using 59 PHA bins.
# Reduced chi-squared = 1.204 for 57 degrees of freedom
# Null hypothesis probability = 1.389433e-01
Photon flux (15-150 keV) in 338.7 sec: 0.432021 ( -0.0353586 0.0356764 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.37783e-06 ( -3.27975e-07 3.3019e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -116.984 sec. to 221.740 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 1.64367E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 517.13 using 59 PHA bins.
# Reduced chi-squared = 9.2344 for 56 degrees of freedom
# Null hypothesis probability = 7.200417e-76
Photon flux (15-150 keV) in 338.7 sec: 0.405954 ( -0.042139 0.041042 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.096e-06 ( -3.87236e-07 3.77312e-07 ) ergs/cm2
Band function
Time interval is from -116.984 sec. to 221.740 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -8.46404 ( 5.9685 8.46404 )
beta : -6.10824 ( -0.287528 0.327524 )
Epeak [keV] : 371.996 ( -371.996 -371.996 )
Norm@50keV : 1.28260E-02 ( -0.00302653 0.00419695 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.66 using 59 PHA bins.
# Reduced chi-squared = 1.248 for 55 degrees of freedom
# Null hypothesis probability = 1.019143e-01
Photon flux (15-150 keV) in 338.7 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] : 2.68877 (-0.148722 0.163159)
R^2/D10^2 : 118.733 (-44.7889 71.0646)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.42 using 59 PHA bins.
# Reduced chi-squared = 0.9547 for 57 degrees of freedom
# Null hypothesis probability = 5.725608e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.684e-06 5.011e-07
25- 50 3.602e-07 5.876e-08
50-150 2.263e-10 1.227e-10
15-150 4.044e-06 5.394e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 4.67053 (-0.373348 0.428646)
Norm : 124.158 (-40.0607 59.0832)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.791e-06 4.747e-07
25- 50 4.090e-07 6.483e-08
50-150 1.486e-09 8.176e-10
15-150 4.202e-06 5.651e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 0.870230 (-0.150671 0.16227)
R1^2/D10^2 : 1.77386E+06 (-1.6176e+06 -1.61768e+06)
kT2 [keV] : 2.74945 (-0.184931 18.8182)
R2^2/D10^2 : 97.7732 (-97.4905 77.3203)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.683e-06 6.063e-07
25- 50 3.619e-07 5.866e-08
50-150 5.125e-08 1.229e-10
15-150 4.096e-06 4.854e-07
Peak spectrum fit
Power-law model
Time interval is from -18.036 sec. to -17.036 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 3.44528 ( -0.829643 1.2413 )
Norm@50keV : 1.86264E-03 ( -0.00133914 0.0018443 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 70.00 using 59 PHA bins.
# Reduced chi-squared = 1.228 for 57 degrees of freedom
# Null hypothesis probability = 1.157058e-01
Photon flux (15-150 keV) in 1 sec: 0.720766 ( -0.198962 0.199297 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.83545e-08 ( -1.00599e-08 1.18255e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -18.036 sec. to -17.036 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.85753 ( )
Epeak [keV] : 2.49138 ( )
Norm@50keV : 2.58262E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.07 using 59 PHA bins.
# Reduced chi-squared = 1.269 for 56 degrees of freedom
# Null hypothesis probability = 8.455187e-02
Photon flux (15-150 keV) in 1 sec: 0.716605 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 2.79371e-08 ( -9.7385e-09 1.22527e-08 ) ergs/cm2
Band function
Time interval is from -18.036 sec. to -17.036 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -2.07192 ( 2.07194 2.07194 )
beta : -3.44491 ( -1.24216 0.828768 )
Epeak [keV] : 0.367637 ( -0.367637 -0.367637 )
Norm@50keV : 1.02378 ( 13.1599 -1.02385 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 70.00 using 59 PHA bins.
# Reduced chi-squared = 1.273 for 55 degrees of freedom
# Null hypothesis probability = 8.385560e-02
Photon flux (15-150 keV) in 1 sec: ( ) 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] : 3.81839 (-1.25243 2.15515)
R^2/D10^2 : 22.3135 (-22.5313 208.888)
(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 1.613e-08 9.505e-09
25- 50 5.090e-09 3.259e-09
50-150 4.642e-11 5.100e-11
15-150 2.127e-08 1.272e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 12.7644 (-6.78709 15.18)
Norm : 15.5992 (-9.7708 60.7444)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.533e-08 8.720e-09
25- 50 8.888e-09 5.534e-09
50-150 1.118e-09 1.034e-09
15-150 2.533e-08 1.540e-08
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.45314 (-1.29939 1.5697)
R1^2/D10^2 : 230.228 (-247.227 257040)
kT2 [keV] : 9.60592 (-4.24435 12.6181)
R2^2/D10^2 : 0.208604 (-0.215326 1.3113)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.486e-08 7.715e-09
25- 50 9.809e-09 6.215e-09
50-150 4.205e-09 3.044e-09
15-150 2.887e-08 1.461e-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: 5.81144 ( -0.445784 0.466176 )
Norm@50keV : 1.31026E-04 ( -4.8277e-05 6.77642e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.43 using 59 PHA bins.
# Reduced chi-squared = 0.8496 for 57 degrees of freedom
# Null hypothesis probability = 7.834702e-01
Photon flux (15-150 keV) in 73.6 sec: 0.446531 ( -0.0446889 0.0447755 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.96794e-07 ( -9.61981e-08 9.62026e-08 ) 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 : 2.63426E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 273.74 using 59 PHA bins.
# Reduced chi-squared = 4.8882 for 56 degrees of freedom
# Null hypothesis probability = 1.977116e-30
Photon flux (15-150 keV) in 73.6 sec: 0.438665 ( -0.047984 0.047234 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.58235e-07 ( -9.95882e-08 9.84253e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -7.67355 ( 4.25918 7.67355 )
beta : -5.86692 ( -0.424479 0.493569 )
Epeak [keV] : 325.266 ( -325.266 -325.266 )
Norm@50keV : 1.68541E-02 ( -0.00597067 0.00986854 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.47 using 59 PHA bins.
# Reduced chi-squared = 0.8812 for 55 degrees of freedom
# Null hypothesis probability = 7.207441e-01
Photon flux (15-150 keV) in 73.6 sec: 0.350318 ( ) 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) = 5.13e-07
S(50-100 keV) = 3.03e-08
T90 vs. Hardness ratio plot
T90 = 287.131999969482 sec.
Hardness ratio (energy fluence ratio) = 0.0590643
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.0867909
Count Ratio (50-100 keV) / (15-25 keV) = 0.00494477
Mask shadow pattern
IMX = -4.950310595518082E-02, IMY = -3.088551059037119E-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:
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-17.699400 55.900600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
186.6553 -62.7723 132.3 53.8 -13.9 0.0388 0.1 0.1 GX 301-2
245.0439 -15.5057 0.7 17.4 99.1 3.2728 16.6 8.9 Sco X-1
255.9919 -38.0254 2.6 7.9 -49.7 0.6652 4.4 10.9 4U 1700-377
256.5249 -36.2839 6.3 6.3 -54.8 0.2751 1.8 9.4 GX 349+2
263.1996 -24.7003 5.0 8.8 -171.5 0.3593 2.3 10.7 GX 1+4
264.9442 -44.3807 8.1 16.2 -71.2 0.2517 1.4 9.6 4U 1735-44
268.3613 -1.4559 56.2 31.2 160.0 0.0482 0.2 0.4 SW J1753.5-0127
270.1458 -25.0017 115.0 14.1 -153.4 0.0154 0.1 8.8 GX 5-1
270.3233 -25.7541 5.3 13.9 -150.3 0.3343 2.2 1.3 GRS 1758-258
274.0870 -13.9072 6.5 23.7 -174.8 0.3022 1.8 9.1 GX 17+2
275.9714 -30.2933 5.6 17.8 -129.9 0.3538 2.1 5.0 H1820-303
284.9820 -24.9067 4.4 26.7 -139.7 -0.4827 -2.6 3.1 HT1900.1-2455
288.7363 11.0159 46.0 52.2 177.4 0.1291 0.3 5.6 GRS 1915+105
263.0981 -33.9587 16.2 7.6 -103.4 -0.1149 -0.7 9.2 GX 354-0
294.3856 7.2876 3.0 52.9 -174.2 1.7917 3.9 ------ UNKNOWN
298.1574 -12.3353 2.9 43.4 -150.5 1.1644 4.0 ------ UNKNOWN
302.4523 -11.7752 3.0 47.3 -148.2 1.4827 3.9 ------ UNKNOWN
309.4404 -24.1176 3.3 48.1 -129.2 2.3761 3.5 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
202.300590 924.900590
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9633 -15.6322 0.4 0.1 92.1 34.4148 29.4 1.1 Sco X-1
254.6435 35.3531 7.5 51.7 -139.8 8.3490 1.5 9.1 Her X-1
255.9085 -37.8266 5.8 24.2 8.9 -2.5601 -2.0 3.8 4U 1700-377
256.2537 -36.4563 5.4 23.1 6.7 2.7080 2.2 9.0 GX 349+2
262.9852 -24.7446 8.8 19.1 -28.4 1.6759 1.3 1.3 GX 1+4
264.8114 -44.4817 20.0 33.4 4.2 -0.8996 -0.6 3.5 4U 1735-44
268.3174 -1.6475 0.0 26.8 -88.8 -0.8880 -0.5 12.1 SW J1753.5-0127
270.2229 -25.2401 3.0 25.4 -33.5 5.0949 3.8 10.2 GX 5-1
270.5032 -25.7527 6.6 25.8 -32.5 2.4332 1.8 10.9 GRS 1758-258
274.0105 -13.9488 5.5 28.0 -59.3 3.1278 2.1 5.3 GX 17+2
275.8894 -30.1888 7.8 31.8 -27.1 2.0950 1.5 10.9 H1820-303
284.9942 -24.7841 3.3 38.5 -39.4 -6.0914 -3.5 8.5 HT1900.1-2455
263.0025 -33.8724 4.5 24.4 -8.1 3.3835 2.6 2.4 GX 354-0
241.2207 -8.8497 2.5 7.7 -179.3 5.2197 4.5 ------ UNKNOWN
268.2431 -26.3759 3.8 24.1 -29.5 3.7363 3.1 ------ UNKNOWN
242.4387 14.0655 2.7 29.8 -154.9 6.5295 4.2 ------ UNKNOWN
231.4630 42.4853 2.9 59.4 -161.4 44.5323 4.0 ------ UNKNOWN
249.1921 34.9674 2.8 50.7 -145.4 13.9884 4.1 ------ UNKNOWN
Plot creation:
Thu May 19 22:20:06 EDT 2022