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
245.9527 -12.7257 0.0101 23.0 114.0 5.5269 18.9 TRIG_01180055
------------------------------------------
Foreground time interval of the image:
-19.499 73.701 (delta_t = 93.200 [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
-44.536000 178.740000
180.000000 228.960000
230.000000 306.760000
308.000000 330.480000
332.000000 393.650000
395.000000 538.728000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 6.72940 ( -0.260534 0.259947 )
Norm@50keV : 6.86737E-05 ( -1.41368e-05 1.70565e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 84.23 using 59 PHA bins.
# Reduced chi-squared = 1.478 for 57 degrees of freedom
# Null hypothesis probability = 1.100608e-02
Photon flux (15-150 keV) in 576.9 sec: 0.593556 ( -0.0458944 0.0463797 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.9682e-06 ( -7.14594e-07 7.20681e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-44.536000 178.740000
180.000000 228.960000
230.000000 306.760000
308.000000 330.480000
332.000000 393.650000
395.000000 538.728000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 1.26197E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 726.66 using 59 PHA bins.
# Reduced chi-squared = 12.976 for 56 degrees of freedom
# Null hypothesis probability = 2.151332e-117
Photon flux (15-150 keV) in 576.9 sec: 0.537139 ( -0.05952 0.057559 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.0991e-06 ( -9.15079e-07 8.85311e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
-44.536000 178.740000
180.000000 228.960000
230.000000 306.760000
308.000000 330.480000
332.000000 393.650000
395.000000 538.728000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.60485 ( -6.31526 -4.60485 )
beta : -9.99061 ( 9.99061 19.8936 )
Epeak [keV] : 12.6669 ( -0.53003 0.452576 )
Norm@50keV : 8.87552E+04 ( -5200.8 214526 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.57 using 59 PHA bins.
# Reduced chi-squared = 0.9558 for 55 degrees of freedom
# Null hypothesis probability = 5.680950e-01
Photon flux (15-150 keV) in 576.9 sec: 0.657527 ( 6.34247 -0.063195 ) 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] : 2.48046 (-0.105451 0.114526)
R^2/D10^2 : 290.480 (-96.1767 140.21)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.41 using 59 PHA bins.
# Reduced chi-squared = 0.9195 for 57 degrees of freedom
# Null hypothesis probability = 6.476233e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.681e-06 1.038e-06
25- 50 6.182e-07 7.852e-08
50-150 1.808e-10 8.887e-11
15-150 9.300e-06 1.064e-06
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 4.07332 (-0.244146 0.274006)
Norm : 298.682 (-86.5039 119.257)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.975e-06 9.288e-07
25- 50 6.863e-07 8.054e-08
50-150 1.133e-09 5.620e-10
15-150 9.662e-06 9.980e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 0.409147 (-2.49366 -2.49366)
R1^2/D10^2 : 1.38445E+13 (-1.55895e+13 1.48597e+18)
kT2 [keV] : 2.49532 (-0.114604 0.124594)
R2^2/D10^2 : 274.463 (-97.4128 146.902)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.677e-06 9.340e+02
25- 50 6.191e-07 8.310e+03
50-150 1.827e-10 2.230e+05
15-150 9.296e-06 1.952e+05
Peak spectrum fit
Power-law model
Time interval is from -23.672 sec. to -22.672 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 3.98742 ( -0.960477 1.3971 )
Norm@50keV : 1.55678E-03 ( -0.00119255 0.00205314 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.15 using 59 PHA bins.
# Reduced chi-squared = 1.108 for 57 degrees of freedom
# Null hypothesis probability = 2.680053e-01
Photon flux (15-150 keV) in 1 sec: 0.949520 ( -0.231459 0.231232 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.39767e-08 ( -1.05243e-08 1.23898e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -23.672 sec. to -22.672 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.89776 ( )
Epeak [keV] : 1.16083 ( )
Norm@50keV : 6.41816E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.24 using 59 PHA bins.
# Reduced chi-squared = 1.165 for 56 degrees of freedom
# Null hypothesis probability = 1.863006e-01
Photon flux (15-150 keV) in 1 sec: 0.948003 ( -0.230601 0.232027 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.30907e-08 ( -9.6208e-09 1.33374e-08 ) ergs/cm2
Band function
Time interval is from -23.672 sec. to -22.672 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -9.81589 ( 9.81589 9.81589 )
beta : -3.98774 ( -1.39759 0.959314 )
Epeak [keV] : 1.89599 ( -1.89599 -1.89599 )
Norm@50keV : 0.211525 ( -0.162094 0.279025 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.15 using 59 PHA bins.
# Reduced chi-squared = 1.148 for 55 degrees of freedom
# Null hypothesis probability = 2.104163e-01
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] : 2.98089 (-0.82651 1.4373)
R^2/D10^2 : 126.213 (-126.929 1050.96)
(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 2.267e-08 1.301e-08
25- 50 3.232e-09 2.101e-09
50-150 4.942e-12 5.345e-12
15-150 2.591e-08 1.506e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 8.21926 (-3.98548 9.97805)
Norm : 48.3785 (-47.5866 288.049)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.221e-08 1.257e-08
25- 50 7.197e-09 4.344e-09
50-150 2.767e-10 2.961e-10
15-150 2.968e-08 1.745e-08
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.25287 (-0.838529 1.05514)
R1^2/D10^2 : 615.032 (-1091.21 84117.5)
kT2 [keV] : 9.39034 (-3.77314 8.26784)
R2^2/D10^2 : 0.260186 (-0.305569 2.38057)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.986e-08 1.138e-08
25- 50 1.107e-08 7.070e-09
50-150 4.486e-09 3.972e-09
15-150 3.541e-08 1.884e-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: 6.02827 ( -0.378738 0.38726 )
Norm@50keV : 1.52890E-04 ( -4.7015e-05 6.23894e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.35 using 59 PHA bins.
# Reduced chi-squared = 0.9535 for 57 degrees of freedom
# Null hypothesis probability = 5.750422e-01
Photon flux (15-150 keV) in 93.2 sec: 0.647314 ( -0.0587243 0.0590187 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.80942e-06 ( -1.52615e-07 1.53078e-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 : 3.07596E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 368.11 using 59 PHA bins.
# Reduced chi-squared = 6.5734 for 56 degrees of freedom
# Null hypothesis probability = 1.782209e-47
Photon flux (15-150 keV) in 93.2 sec: 0.624945 ( -0.067192 0.065292 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.72333e-06 ( -1.70817e-07 1.66977e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.966870 ( -0.0396735 0.447483 )
beta : -9.13722 ( 8.01468 1.60807 )
Epeak [keV] : 8.85241 ( -0.322424 0.148652 )
Norm@50keV : 86.0486 ( -83.516 59296.5 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 45.81 using 59 PHA bins.
# Reduced chi-squared = 0.8329 for 55 degrees of freedom
# Null hypothesis probability = 8.067250e-01
Photon flux (15-150 keV) in 93.2 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.57648e-06 ( 0 0 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 8.56e-07
S(50-100 keV) = 3.23e-08
T90 vs. Hardness ratio plot
T90 = 486.767999887466 sec.
Hardness ratio (energy fluence ratio) = 0.0377336
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.0681701
Count Ratio (50-100 keV) / (15-25 keV) = -0.00665949
Mask shadow pattern
IMX = -1.724983452830623E-01, IMY = -3.871876579202563E-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:
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-19.499400 73.700600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
245.0430 -15.6730 5.3 24.8 120.2 -0.6670 -2.2 4.2 Sco X-1
254.5821 35.4538 19.2 37.5 6.2 -0.1971 -0.6 9.0 Her X-1
268.4283 -1.5474 149.0 37.9 72.8 0.0530 0.1 6.7 SW J1753.5-0127
245.9527 -12.7257 0.6 23.0 114.0 5.5237 19.0 ------ UNKNOWN
198.3828 -38.7165 2.5 53.0 -174.2 3.1670 4.7 ------ UNKNOWN
211.3804 -17.2239 2.5 29.4 -165.1 1.1548 4.6 ------ UNKNOWN
190.4074 14.7760 3.0 41.2 -99.1 3.6626 3.9 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
137.500590 178.740000
180.000000 228.960000
230.000000 306.760000
308.000000 330.480000
332.000000 393.650000
395.000000 881.930000
885.000000 885.030000
894.000000 963.170000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
245.1219 -15.7047 7.1 3.1 179.5 6.9748 1.6 9.1 Sco X-1
254.4272 35.4804 5.5 48.9 -7.1 -17.0893 -2.1 8.4 Her X-1
255.7902 -37.9668 16.0 26.7 146.4 -3.7438 -0.7 11.9 4U 1700-377
256.5843 -36.5212 6.4 25.6 143.8 -9.1138 -1.8 9.3 GX 349+2
263.0319 -24.7846 249.0 20.1 113.0 -0.2633 -0.0 2.7 GX 1+4
264.5953 -44.3082 0.0 35.4 140.5 -6.8198 -0.8 10.6 4U 1735-44
268.4968 -1.4985 13.3 25.0 48.8 4.8481 0.9 8.2 SW J1753.5-0127
270.1680 -24.9301 7.2 25.9 105.4 10.7365 1.6 11.0 GX 5-1
270.1124 -25.8611 0.0 26.2 107.4 10.2868 1.6 12.5 GRS 1758-258
274.0094 -14.0385 45.1 27.3 79.8 -1.6988 -0.3 0.2 GX 17+2
275.8406 -30.2357 7.5 32.7 110.9 12.0054 1.5 9.0 H1820-303
285.1326 -24.8087 4.8 38.8 97.7 -38.2417 -2.4 8.5 HT1900.1-2455
263.1468 -33.9087 9.9 26.3 130.2 6.7734 1.2 9.0 GX 354-0
278.4862 -16.4560 3.1 31.6 84.5 29.2587 3.8 ------ UNKNOWN
245.7776 -12.7498 1.4 0.2 -109.5 36.6106 8.1 ------ UNKNOWN
229.2508 -27.8347 2.9 21.7 -152.8 17.5120 4.1 ------ UNKNOWN
219.7464 -38.9525 2.8 35.0 -159.4 23.9385 4.2 ------ UNKNOWN
221.5670 32.7173 2.7 51.1 -42.8 113.7160 4.4 ------ UNKNOWN
Plot creation:
Fri Jul 21 12:08:29 EDT 2023