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
244.9450 -15.6744 0.0157 17.7 101.9 -29.8147 -12.2 TRIG_01108208
------------------------------------------
Foreground time interval of the image:
-225.136 -80.896 (delta_t = 144.240 [sec])
-80.136 -45.556 (delta_t = 34.580 [sec])
-33.136 -13.836 (delta_t = 19.300 [sec])
-10.136 353.865 (delta_t = 364.001 [sec])
Background time interval of the image:
-239.136 -225.136 (delta_t = 14.000 [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 26.880000
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 26.880000
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 26.880000
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
-225.136000 -80.896000
-80.136000 -45.556000
-33.136000 -13.836000
-10.136000 651.864000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 6.64113 ( -0.194528 0.192043 )
Norm@50keV : 1.17799E-04 ( -1.6702e-05 1.89818e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 81.04 using 59 PHA bins.
# Reduced chi-squared = 1.422 for 57 degrees of freedom
# Null hypothesis probability = 1.988296e-02
Photon flux (15-150 keV) in 860.1 sec: 0.929844 ( -0.0642494 0.0653081 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.33583e-05 ( -1.48719e-06 1.5094e-06 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-225.136000 -80.896000
-80.136000 -45.556000
-33.136000 -13.836000
-10.136000 651.864000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 1.69232E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 1161.23 using 59 PHA bins.
# Reduced chi-squared = 20.7363 for 56 degrees of freedom
# Null hypothesis probability = 2.823155e-206
Photon flux (15-150 keV) in 860.1 sec: 0.832983 ( -0.080346 0.079161 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.11533e-05 ( -1.85575e-06 1.82565e-06 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
-225.136000 -80.896000
-80.136000 -45.556000
-33.136000 -13.836000
-10.136000 651.864000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.61058 ( )
beta : -8.77649 ( )
Epeak [keV] : 14.1069 ( )
Norm@50keV : 2.38529E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 926.92 using 59 PHA bins.
# Reduced chi-squared = 16.853 for 55 degrees of freedom
# Null hypothesis probability = 1.197649e-158
Photon flux (15-150 keV) in 860.1 sec: 1.36375 ( 5.63625 -0.13657 ) 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] : 2.68191 (-0.0959425 0.103342)
R^2/D10^2 : 231.798 (-66.5379 91.5395)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.18 using 59 PHA bins.
# Reduced chi-squared = 1.003 for 57 degrees of freedom
# Null hypothesis probability = 4.685488e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.795e-05 1.703e-06
25- 50 1.738e-06 1.355e-07
50-150 1.067e-09 3.590e-10
15-150 1.968e-05 1.755e-06
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 4.43165 (-0.216723 0.239394)
Norm : 307.304 (-74.3531 96.3899)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.947e-05 1.634e-06
25- 50 1.849e-06 1.415e-07
50-150 5.025e-09 1.643e-09
15-150 2.133e-05 1.802e-06
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 1.97031 (-0.0959345 0.10335)
R1^2/D10^2 : 1369.15 (-66.5443 91.5335)
kT2 [keV] : 3.08594 (-2.32094 45.1688)
R2^2/D10^2 : 52.0213 (-51.8141 171.315)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 0.000e+00 0.000e+00
25- 50 0.000e+00 0.000e+00
50-150 0.000e+00 0.000e+00
15-150 0.000e+00 0.000e+00
Peak spectrum fit
Power-law model
Time interval is from 16.864 sec. to 17.864 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 5.91943 ( -0.789505 0.873729 )
Norm@50keV : 4.50804E-04 ( -0.000275522 0.000539919 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.75 using 59 PHA bins.
# Reduced chi-squared = 0.9956 for 57 degrees of freedom
# Null hypothesis probability = 4.843430e-01
Photon flux (15-150 keV) in 1 sec: 1.71120 ( -0.265754 0.265719 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.16058e-08 ( -8.51765e-09 8.61662e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from 16.864 sec. to 17.864 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 1.44595E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 137.91 using 59 PHA bins.
# Reduced chi-squared = 2.4626 for 56 degrees of freedom
# Null hypothesis probability = 7.369261e-09
Photon flux (15-150 keV) in 1 sec: 1.70860 1.73815 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 5.03483e-08 ( -7.8066e-09 7.8223e-09 ) ergs/cm2
Band function
Time interval is from 16.864 sec. to 17.864 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.88454 ( )
beta : -3.63330 ( )
Epeak [keV] : 6.98101 ( )
Norm@50keV : 1.18225E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 117.65 using 59 PHA bins.
# Reduced chi-squared = 2.1391 for 55 degrees of freedom
# Null hypothesis probability = 1.891465e-06
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] : 2.37135 (-0.307084 0.358462)
R^2/D10^2 : 1285.18 (-1285.17 2608.76)
(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 4.760e-08 2.562e-08
25- 50 2.813e-09 1.653e-09
50-150 5.220e-13 5.835e-13
15-150 5.042e-08 2.707e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 4.16907 (-0.7904 1.05913)
Norm : 812.417 (-481.552 1308.25)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.669e-08 2.074e-08
25- 50 3.795e-09 2.100e-09
50-150 7.215e-12 8.002e-12
15-150 5.049e-08 2.607e-08
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.30092 (-0.32695 0.360696)
R1^2/D10^2 : 1583.51 (-792.127 3826.02)
kT2 [keV] : 20.2294 (-10.3839 -20.1998)
R2^2/D10^2 : 8.73113E-03 (-0.00876074 0.438697)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.719e-08 2.553e-08
25- 50 5.855e-09 3.467e-09
50-150 1.045e-08 7.920e-09
15-150 6.350e-08 3.202e-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: 6.50375 ( -0.200456 0.198017 )
Norm@50keV : 1.53462E-04 ( -2.24722e-05 2.56293e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 80.31 using 59 PHA bins.
# Reduced chi-squared = 1.409 for 57 degrees of freedom
# Null hypothesis probability = 2.266529e-02
Photon flux (15-150 keV) in 562.1 sec: 1.05230 ( -0.0737079 0.0749021 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.73689e-05 ( -1.11531e-06 1.13191e-06 ) 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 : 2.15405E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 1082.56 using 59 PHA bins.
# Reduced chi-squared = 19.3315 for 56 degrees of freedom
# Null hypothesis probability = 5.155307e-190
Photon flux (15-150 keV) in 562.1 sec: 0.958833 ( -0.090266 0.088967 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.59534e-05 ( -1.36551e-06 1.34392e-06 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.15850 ( -1.21782 1.217 )
beta : -8.26989 ( 8.29723 1.20362 )
Epeak [keV] : 3.59553 ( -0.576898 6.24535 )
Norm@50keV : 2.37190 ( -2.37622 106564 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.17 using 59 PHA bins.
# Reduced chi-squared = 1.040 for 55 degrees of freedom
# Null hypothesis probability = 3.943730e-01
Photon flux (15-150 keV) in 562.1 sec: 1.36375 ( 5.63625 -0.13657 ) 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) = 2.09e-06
S(50-100 keV) = 8.39e-08
T90 vs. Hardness ratio plot
T90 = 719 sec.
Hardness ratio (energy fluence ratio) = 0.0401435
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.0833372
Count Ratio (50-100 keV) / (15-25 keV) = 0.00464049
Mask shadow pattern
IMX = -6.577689293230660E-02, IMY = -3.119854518484782E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 26.880000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 26.880000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 26.880000
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:
-239.136000 -225.136000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9724 -15.6538 0.4 17.7 101.8 2.0305 29.1 0.9 Sco X-1
254.3105 35.2355 0.0 50.7 16.1 0.1395 0.7 9.6 Her X-1
255.9860 -37.7102 6.1 38.1 131.5 0.2798 1.9 8.0 4U 1700-377
256.3822 -36.4220 3.9 37.5 129.6 0.4424 3.0 2.6 GX 349+2
263.1250 -24.6167 9.4 36.8 107.7 0.2043 1.2 10.0 GX 1+4
262.9648 -33.8039 4.5 40.4 121.3 -0.6147 -2.6 2.2 GX 354-0
221.3833 -2.1228 2.3 9.7 -56.1 0.2658 4.9 ------ UNKNOWN
219.1763 32.5389 2.3 42.5 -22.9 0.4794 5.1 ------ UNKNOWN
185.2957 -10.8544 2.5 42.2 -107.9 0.9619 4.6 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-225.136000 -80.896000
-80.136000 -45.556000
-33.136000 -13.836000
-10.136000 353.864630
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9450 -15.6744 0.9 17.7 101.9 -29.8146 -12.2 2.9 Sco X-1
254.3105 35.2355 0.0 50.7 16.1 -4.4047 -0.6 9.6 Her X-1
255.8828 -37.7198 241.3 38.0 131.6 -0.2278 -0.0 8.9 4U 1700-377
256.3749 -36.4374 5.0 37.5 129.6 -10.7639 -2.3 3.0 GX 349+2
263.1306 -24.6165 5.0 36.8 107.7 -12.8722 -2.3 10.2 GX 1+4
262.9962 -33.8105 4.8 40.5 121.3 18.0076 2.4 1.5 GX 354-0
258.9883 9.3345 2.4 35.8 48.2 18.7643 4.8 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
488.164610 824.964600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9654 -15.6416 0.4 0.1 -126.5 19.1856 32.2 0.8 Sco X-1
256.0599 -37.7528 6.5 24.1 66.4 1.5019 1.8 6.5 4U 1700-377
256.3225 -36.5796 11.6 23.2 64.6 0.7626 1.0 10.9 GX 349+2
262.8552 -24.9045 0.0 19.1 29.9 0.6898 1.0 12.7 GX 1+4
264.5573 -44.4360 5.1 33.2 62.3 -3.0155 -2.3 8.0 4U 1735-44
268.4742 -1.5190 5.3 27.1 -31.0 1.5179 2.2 7.5 SW J1753.5-0127
270.3269 -25.2125 8.0 25.5 24.2 1.0601 1.5 8.3 GX 5-1
270.3890 -25.5898 9.9 25.7 25.0 0.8632 1.2 10.3 GRS 1758-258
273.9797 -14.0788 4.4 28.0 -1.2 1.7488 2.6 3.0 GX 17+2
275.9579 -30.4979 5.4 31.9 31.3 2.0226 2.1 8.0 H1820-303
284.9275 -24.9717 42.1 38.4 18.8 0.2933 0.3 6.7 HT1900.1-2455
288.6477 10.9893 3.7 50.8 -30.8 -5.4934 -3.1 9.3 GRS 1915+105
262.9817 -33.8556 2700.0 24.3 49.8 -0.0010 -0.0 1.3 GX 354-0
226.9901 -9.6003 2.3 18.6 -164.8 2.9595 5.0 ------ UNKNOWN
200.9877 1.3852 2.5 46.7 -164.4 6.1325 4.6 ------ UNKNOWN
299.6293 6.7154 2.0 58.5 -20.1 14.2619 5.8 ------ UNKNOWN
215.6482 22.8562 3.3 48.1 -129.2 9.4413 3.5 ------ UNKNOWN
247.6899 25.2478 2.4 41.0 -88.1 12.9029 4.7 ------ UNKNOWN
Plot creation:
Sat May 28 20:57:48 EDT 2022