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
299.9667 +34.9934 0.0161 0.1 164.0 -8.5262 -11.9 TRIG_01105561
------------------------------------------
Foreground time interval of the image:
-2.796 52.720 (delta_t = 55.516 [sec])
54.000 512.080 (delta_t = 458.080 [sec])
513.000 564.410 (delta_t = 51.410 [sec])
566.000 665.720 (delta_t = 99.720 [sec])
667.000 715.808 (delta_t = 48.808 [sec])
717.000 730.560 (delta_t = 13.560 [sec])
732.000 784.228 (delta_t = 52.228 [sec])
Background time interval of the image:
-239.000 -2.796 (delta_t = 236.204 [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
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
Multiple GTIs in the spectrum
tstart tstop
-2.796000 52.720000
54.000000 512.080000
513.000000 564.410000
566.000000 665.720000
667.000000 715.807500
717.000000 730.560000
732.000000 784.228000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.76545 ( -0.0451399 0.0453088 )
Norm@50keV : 2.41110E-03 ( -5.62371e-05 5.61903e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.45 using 59 PHA bins.
# Reduced chi-squared = 1.218 for 57 degrees of freedom
# Null hypothesis probability = 1.247378e-01
Photon flux (15-150 keV) in 779.3 sec: 0.327899 ( -0.00853368 0.0085678 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.73236e-05 ( -4.12952e-07 4.13491e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-2.796000 52.720000
54.000000 512.080000
513.000000 564.410000
566.000000 665.720000
667.000000 715.807500
717.000000 730.560000
732.000000 784.228000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.31608 ( -0.204717 0.195848 )
Epeak [keV] : 78.4452 ( -10.0566 21.6788 )
Norm@50keV : 3.95489E-03 ( -0.000751482 0.000978985 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.35 using 59 PHA bins.
# Reduced chi-squared = 0.9528 for 56 degrees of freedom
# Null hypothesis probability = 5.756370e-01
Photon flux (15-150 keV) in 779.3 sec: 0.315263 ( -0.009878 0.009942 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.66739e-05 ( -4.97193e-07 4.9618e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
-2.796000 52.720000
54.000000 512.080000
513.000000 564.410000
566.000000 665.720000
667.000000 715.807500
717.000000 730.560000
732.000000 784.228000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.14515 ( -0.313159 0.574469 )
beta : -2.04257 ( 2.04236 0.166389 )
Epeak [keV] : 65.6639 ( -18.1076 26.01 )
Norm@50keV : 4.94208E-03 ( -0.00154834 0.00614566 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.05 using 59 PHA bins.
# Reduced chi-squared = 0.9464 for 55 degrees of freedom
# Null hypothesis probability = 5.879441e-01
Photon flux (15-150 keV) in 779.3 sec: 0.313253 ( 6.68675 -0.010365 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.66698e-05 ( -1.66643e-05 -4.86595e-07 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 13.9849 ( )
R^2/D10^2 : 4.25904E-02 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 359.83 using 59 PHA bins.
# Reduced chi-squared = 6.3129 for 57 degrees of freedom
# Null hypothesis probability = 1.550533e-45
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.371e-06 6.195e-08
25- 50 5.095e-06 1.481e-07
50-150 6.558e-06 3.109e-07
15-150 1.302e-05 3.156e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 120.783 (-10.8448 15.0828)
Norm : 1.36689 (-0.0495931 0.0466508)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.705e-06 1.414e-07
25- 50 4.889e-06 2.089e-07
50-150 8.979e-06 1.935e-06
15-150 1.657e-05 2.053e-06
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.38766 (-0.7594 0.782679)
R1^2/D10^2 : 0.285433 (-0.0791758 0.127759)
kT2 [keV] : 23.8409 (-2.33141 3.13098)
R2^2/D10^2 : 4.43620E-03 (-0.00171014 0.00231237)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.405e-06 2.011e-07
25- 50 5.054e-06 3.082e-07
50-150 8.828e-06 7.037e-07
15-150 1.629e-05 8.144e-07
Peak spectrum fit
Power-law model
Time interval is from 602.228 sec. to 603.228 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.75978 ( -0.324404 0.349479 )
Norm@50keV : 5.87569E-03 ( -0.00137711 0.00133434 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 74.54 using 59 PHA bins.
# Reduced chi-squared = 1.308 for 57 degrees of freedom
# Null hypothesis probability = 5.934122e-02
Photon flux (15-150 keV) in 1 sec: 0.797375 ( -0.156021 0.156022 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.41885e-08 ( -1.27246e-08 1.31994e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 602.228 sec. to 603.228 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.624751 ( -2.24464 1.47324 )
Epeak [keV] : 50.5198 ( -11.2515 -50.5187 )
Norm@50keV : 2.67991E-02 ( -0.0268028 0.553446 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 72.92 using 59 PHA bins.
# Reduced chi-squared = 1.302 for 56 degrees of freedom
# Null hypothesis probability = 6.393998e-02
Photon flux (15-150 keV) in 1 sec: 0.772945 ( -0.157208 0.15833 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.84458e-08 ( -1.31025e-08 1.5104e-08 ) ergs/cm2
Band function
Time interval is from 602.228 sec. to 603.228 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -9.06532E-02 ( -0.818932 -0.818932 )
beta : -2.50145 ( 2.2468 0.679934 )
Epeak [keV] : 43.8303 ( -36.72 24.2079 )
Norm@50keV : 5.98334E-02 ( -0.0585456 192.04 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 72.74 using 59 PHA bins.
# Reduced chi-squared = 1.323 for 55 degrees of freedom
# Null hypothesis probability = 5.483184e-02
Photon flux (15-150 keV) in 1 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 4.98692e-08 ( 0 0 ) ergs/cm2
Single BB
XSPEC: quit
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 10.9547 (-2.15368 2.75685)
R^2/D10^2 : 0.281095 (-0.159158 0.347328)
(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 7.042e-09 2.859e-09
25- 50 1.981e-08 6.514e-09
50-150 1.338e-08 6.666e-09
15-150 4.024e-08 1.254e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 96.4961 (-45.9858 -96.4961)
Norm : 3.60299 (-0.7831 1.15483)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.415e-09 2.725e-09
25- 50 1.616e-08 6.976e-09
50-150 2.566e-08 1.855e-08
15-150 5.124e-08 2.708e-08
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.26359 (-7.35114 4.6803)
R1^2/D10^2 : 0.819827 (-0.788496 -0.788496)
kT2 [keV] : 19.7808 (-20.5754 71.4586)
R2^2/D10^2 : 1.86577E-02 (-0.0157461 0.29996)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.622e-09 5.095e-09
25- 50 1.758e-08 1.022e-08
50-150 2.224e-08 1.343e-08
15-150 4.845e-08 2.527e-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: 1.76545 ( -0.0451399 0.0453088 )
Norm@50keV : 2.41110E-03 ( -5.62371e-05 5.61903e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.45 using 59 PHA bins.
# Reduced chi-squared = 1.218 for 57 degrees of freedom
# Null hypothesis probability = 1.247378e-01
Photon flux (15-150 keV) in 779.3 sec: 0.327899 ( -0.00853368 0.0085678 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.73236e-05 ( -4.12952e-07 4.13491e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.31608 ( -0.204717 0.195848 )
Epeak [keV] : 78.4452 ( -10.0566 21.6788 )
Norm@50keV : 3.95489E-03 ( -0.000751482 0.000978985 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.35 using 59 PHA bins.
# Reduced chi-squared = 0.9528 for 56 degrees of freedom
# Null hypothesis probability = 5.756370e-01
Photon flux (15-150 keV) in 779.3 sec: 0.315263 ( -0.009878 0.009942 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.66739e-05 ( -4.97193e-07 4.9618e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.14515 ( -0.313159 0.574469 )
beta : -2.04257 ( 2.04236 0.166389 )
Epeak [keV] : 65.6639 ( -18.1076 26.01 )
Norm@50keV : 4.94208E-03 ( -0.00154834 0.00614566 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.05 using 59 PHA bins.
# Reduced chi-squared = 0.9464 for 55 degrees of freedom
# Null hypothesis probability = 5.879441e-01
Photon flux (15-150 keV) in 779.3 sec: 0.313253 ( 6.68675 -0.010365 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.66698e-05 ( -1.66643e-05 -4.86595e-07 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 4.81e-06
S(50-100 keV) = 5.66e-06
T90 vs. Hardness ratio plot
T90 = 579.963999986649 sec.
Hardness ratio (energy fluence ratio) = 1.17672
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.21612
Count Ratio (50-100 keV) / (15-25 keV) = 0.759327
Mask shadow pattern
IMX = -2.227611184227962E-03, IMY = -6.375641384974325E-04
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:
-239.000000 -2.796000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.6527 35.3773 6.5 36.8 125.7 2.0534 1.8 9.8 Her X-1
288.7812 10.9580 10.7 26.0 47.3 -0.5479 -1.1 1.3 GRS 1915+105
299.8284 35.1174 0.0 0.3 161.3 0.9129 2.5 12.7 Cyg X-1
308.3567 40.8518 0.0 8.8 -113.4 0.1349 0.4 12.7 Cyg X-3
326.0222 38.3875 4.6 21.0 -85.8 -1.1080 -2.5 8.1 Cyg X-2
249.1475 46.8074 3.1 39.6 144.9 3.8531 3.7 ------ UNKNOWN
316.9326 -18.2290 2.3 55.5 1.9 5.7712 5.0 ------ UNKNOWN
296.4045 42.0230 2.9 7.7 -179.4 1.4271 4.0 ------ UNKNOWN
332.8196 7.4706 2.2 40.7 -34.0 3.0194 5.2 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-2.796000 52.720000
54.000000 512.080000
513.000000 564.410000
566.000000 665.720000
667.000000 715.807500
717.000000 730.560000
732.000000 784.228000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.4652 35.5290 184.2 36.9 126.0 0.1029 0.1 11.2 Her X-1
288.7616 11.0844 5.4 25.9 47.5 1.8839 2.1 8.6 GRS 1915+105
299.8284 35.1174 0.0 0.3 161.3 -3.7350 -5.2 12.7 Cyg X-1
308.2445 41.1364 0.0 9.0 -115.2 0.3911 0.5 12.6 Cyg X-3
326.1510 38.3312 8.7 21.1 -85.7 1.1079 1.3 1.1 Cyg X-2
255.9005 21.0707 3.0 41.0 103.7 12.6834 3.9 ------ UNKNOWN
311.2237 -18.1771 2.6 54.1 8.3 13.4416 4.4 ------ UNKNOWN
296.7558 53.3568 1.9 18.6 -164.8 4.0855 6.0 ------ UNKNOWN
339.7871 -8.7239 2.4 57.5 -27.1 21.0946 4.8 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
-119.000000 52.720000
54.000000 303.135300
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.6706 35.3614 0.0 36.8 125.6 1.0601 0.6 10.5 Her X-1
288.6580 11.0415 66.1 26.0 47.7 0.1373 0.2 10.1 GRS 1915+105
299.4550 35.0740 21.7 0.5 132.0 -0.3004 -0.5 10.1 Cyg X-1
307.9767 40.7685 0.0 8.6 -114.2 -1.3079 -2.4 12.6 Cyg X-3
326.0893 38.3233 6.5 21.1 -85.6 -1.2459 -1.8 3.9 Cyg X-2
260.1791 60.6126 2.5 36.2 169.2 3.7297 4.7 ------ UNKNOWN
307.7101 26.3534 4.5 10.8 -18.3 1.4595 2.6 ------ UNKNOWN
199.9445 79.1391 2.7 57.7 -171.3 10.9030 4.3 ------ UNKNOWN
330.4497 50.8000 2.4 27.1 -114.0 3.2046 4.7 ------ UNKNOWN
Plot creation:
Sat May 7 12:58:22 EDT 2022