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
277.6948 -6.7561 0.0222 46.5 -161.2 0.0665 8.7 TRIG_01004219
------------------------------------------
Foreground time interval of the image:
0.004 0.020 (delta_t = 0.016 [sec])
Background time interval of the image:
-159.119 -41.260 (delta_t = 117.859 [sec])
-40.220 0.004 (delta_t = 40.224 [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 0.032000
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 0.032000
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 0.032000
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 0.004 sec. to 0.020 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.87250 ( -0.306786 0.371407 )
Norm@50keV : 7.79067E-02 ( -0.0268876 0.0259983 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 78.27 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.23e-02 with 57 degrees of freedom
Photon flux (15-150 keV) in 0.016 sec: 19.5685 ( -5.39874 5.4057 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.41369e-08 ( -3.99429e-09 3.99942e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.004 sec. to 0.020 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -5.03301 ( -3.28188 2.28675 )
Epeak [keV] : 42.0197 ( -3.97691 3.74605 )
Norm@50keV : 1878.96 ( -2093.59 86154.5 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 35.56 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.85e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 0.016 sec: 31.4801 ( -6.1732 6.215 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.00226e-08 ( 0 0 ) ergs/cm2
Band function
Time interval is from 0.004 sec. to 0.020 sec.
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.95498 ( -2.18566 -4.95498 )
beta : -9.99772 ( 9.99772 19.9817 )
Epeak [keV] : 42.1086 ( -3.87821 3.12522 )
Norm@50keV : 1708.55 ( -317.592 1679.49 )
------------------------------------------------------------
Photon flux (15-150 keV) in 0.016 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 3.21173e-08 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 9.79337 (-0.948151 0.878016)
R^2/D10^2 : 19.1304 (-6.54702 9.64849)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 42.05 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.31e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.934e-09 1.578e-09
25- 50 1.432e-08 3.207e-09
50-150 7.034e-09 2.402e-09
15-150 2.729e-08 6.024e-09
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 30.2673 (-6.39141 7.5003)
Norm : 210.783 (-61.5117 72.9397)
------------------------------------------------------------
#Fit statistic : Chi-Squared 63.48 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 2.59e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.895e-09 1.847e-09
25- 50 7.917e-09 2.024e-09
50-150 4.386e-09 1.944e-09
15-150 1.920e-08 4.971e-09
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 0.217998 (13.1599 -0.217998)
R1^2/D10^2 : 0.283596 (-0.283596 -0.283596)
kT2 [keV] : 9.79409 (-0.948879 0.877287)
R2^2/D10^2 : 19.1252 (-6.54151 9.654)
------------------------------------------------------------
#Fit statistic : Chi-Squared 42.05 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.00e-01 with 55 degrees of freedom
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 -0.486 sec. to 0.514 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.42899 ( -0.693696 0.660007 )
Norm@50keV : 6.46040E-03 ( -0.00267349 0.00267236 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 43.50 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.06e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 0.792021 ( -0.345524 0.352571 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.20712e-08 ( -2.64045e-08 2.6694e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.486 sec. to 0.514 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.876749 ( -8.99256 7.34377 )
Epeak [keV] : 62.1651 ( -24.6136 -61.887 )
Norm@50keV : 9.28955E-02 ( -0.0971702 21904.1 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 42.29 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.12e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 0.745180 ( -0.348452 0.36005 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.54776e-08 ( -3.0581e-08 2.95874e-08 ) ergs/cm2
Band function
Time interval is from -0.486 sec. to 0.514 sec.
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -5 -5 )
beta : -2.30352 ( 2.30472 1.09889 )
Epeak [keV] : 42.8791 ( -42.8242 16.9549 )
Norm@50keV : 30.4119 ( -11.8511 2.74161e+06 )
------------------------------------------------------------
Photon flux (15-150 keV) in 1 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 5.69327e-08 ( -5.69257e-08 -2.61325e-08 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 15.0440 (-5.01558 9.14251)
R^2/D10^2 : 0.100420 (-0.100399 0.323992)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 42.40 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.25e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.756e-09 3.250e-09
25- 50 1.895e-08 1.205e-08
50-150 2.922e-08 2.051e-08
15-150 5.293e-08 3.397e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.363 (-199.363 -199.363)
Norm : 3.36704 (-1.38273 1.76458)
------------------------------------------------------------
#Fit statistic : Chi-Squared 43.27 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.10e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.384e-09 5.565e-09
25- 50 1.613e-08 1.050e-08
50-150 3.537e-08 2.328e-08
15-150 5.988e-08 3.784e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 1.20981 (-1.76125 22.3453)
R1^2/D10^2 : 1.76554E+04 (-19833.8 -19833.8)
kT2 [keV] : 15.2738 (-5.16509 9.75515)
R2^2/D10^2 : 9.42448E-02 (-0.0789442 0.319475)
------------------------------------------------------------
#Fit statistic : Chi-Squared 42.31 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 8.95e-01 with 55 degrees of freedom
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
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: 2.87250 ( -0.306786 0.371407 )
Norm@50keV : 7.79067E-02 ( -0.0268876 0.0259983 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 78.27 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.23e-02 with 57 degrees of freedom
Photon flux (15-150 keV) in 0.016 sec: 19.5685 ( -5.39874 5.4057 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.41369e-08 ( -3.99429e-09 3.99942e-09 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -5.03301 ( -3.28188 2.28675 )
Epeak [keV] : 42.0197 ( -3.97691 3.74605 )
Norm@50keV : 1878.96 ( -2093.59 86154.5 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 35.56 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.85e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 0.016 sec: 31.4801 ( -6.1732 6.215 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.00226e-08 ( 0 0 ) ergs/cm2
Band function
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.95516 ( -2.18385 -4.95516 )
beta : -9.99772 ( 9.99772 19.9817 )
Epeak [keV] : 42.1035 ( -3.87312 3.13005 )
Norm@50keV : 1710.26 ( -317.91 1677.62 )
------------------------------------------------------------
Photon flux (15-150 keV) in 0.016 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 4.03957e-12 ( 0 0 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 4.74e-09
S(50-100 keV) = 2.57e-09
T90 vs. Hardness ratio plot
T90 = 0.0159999132156372 sec.
Hardness ratio (energy fluence ratio) = 0.542194
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 2.85781
Count Ratio (50-100 keV) / (15-25 keV) = 1.35011
Mask shadow pattern
IMX = -9.980633127894382E-01, IMY = 3.399606680891260E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.032000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.032000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.032000
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:
-159.119400 -41.260000
-40.220000 0.004000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.3851 35.2712 8.5 0.9 35.0 0.2346 1.4 5.6 Her X-1
268.4150 -1.5415 3.4 38.1 -151.4 -0.9294 -3.4 6.0 SW J1753.5-0127
274.0127 -13.9810 6.7 51.7 -153.0 0.9230 1.7 3.3 GX 17+2
288.7658 10.9049 66.5 38.9 170.0 0.0482 0.2 3.1 GRS 1915+105
299.6949 35.2913 4.7 36.6 126.5 1.0060 2.4 7.4 Cyg X-1
286.1271 34.3594 3.0 25.8 132.1 0.8355 3.9 ------ UNKNOWN
299.5831 -3.6769 2.3 56.8 173.8 5.3657 5.0 ------ UNKNOWN
285.2765 -3.8915 2.4 47.9 -172.0 1.7798 4.7 ------ UNKNOWN
188.2700 37.0533 2.5 52.9 -15.4 2.0409 4.5 ------ UNKNOWN
222.6514 22.9845 2.5 30.2 -52.5 1.0693 4.6 ------ UNKNOWN
236.9960 14.3901 2.7 25.6 -85.9 1.0748 4.3 ------ UNKNOWN
209.9246 24.7129 2.8 39.8 -40.6 1.2489 4.2 ------ UNKNOWN
256.8111 -5.7765 2.3 40.2 -132.1 1.6626 5.1 ------ UNKNOWN
248.6812 -10.4592 2.7 45.2 -120.5 3.4447 4.3 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.004000 0.020000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.6984 35.3770 6.7 1.0 50.9 0.0050 1.7 12.0 Her X-1
268.5068 -1.3991 59.2 38.0 -151.6 -0.0009 -0.2 8.9 SW J1753.5-0127
273.9393 -13.9091 3.8 51.6 -152.9 0.0344 3.0 8.6 GX 17+2
288.9082 10.9311 5.8 39.0 169.8 -0.0097 -2.0 6.5 GRS 1915+105
299.5228 35.2400 9.9 36.5 126.6 0.0067 1.2 4.0 Cyg X-1
277.6948 -6.7561 1.3 46.5 -161.2 0.0665 8.7 ------ UNKNOWN
283.2281 -16.7662 2.3 57.9 -161.5 0.1219 5.0 ------ UNKNOWN
235.4769 6.1421 2.4 33.4 -92.3 0.0269 4.7 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
78.280600 898.810000
899.780000 962.880900
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9863 -15.6354 0.3 33.2 -93.7 72.4693 40.0 0.5 Sco X-1
254.3312 35.3262 37.8 47.5 -11.4 -0.4080 -0.3 6.3 Her X-1
255.9654 -37.8852 4.0 36.9 -136.2 4.2915 2.9 2.7 4U 1700-377
256.3959 -36.4122 6.2 35.5 -135.1 2.5277 1.9 2.0 GX 349+2
262.9262 -24.6120 3.8 22.8 -128.6 2.8447 3.0 9.2 GX 1+4
264.8381 -44.5894 9.9 39.5 -150.9 1.7911 1.2 9.3 4U 1735-44
268.3557 -1.3023 14.4 10.8 -45.5 -0.6459 -0.8 9.0 SW J1753.5-0127
270.4248 -24.9949 3.9 19.5 -145.3 2.7221 2.9 9.2 GX 5-1
270.1418 -25.7284 2.8 20.3 -145.4 3.5114 4.1 8.7 GRS 1758-258
273.9341 -14.0940 2.2 8.2 -139.0 4.9309 5.3 5.4 GX 17+2
275.8655 -30.3419 7.3 23.7 -161.4 1.3751 1.6 3.4 H1820-303
284.9297 -24.8028 29.8 19.4 174.4 0.3316 0.4 9.1 HT1900.1-2455
288.7689 11.0875 13.8 21.0 46.5 0.8149 0.8 8.7 GRS 1915+105
299.6093 35.2004 9.3 46.8 39.4 3.6311 1.2 0.9 Cyg X-1
263.1053 -33.8078 6.3 30.2 -140.8 1.9282 1.8 6.0 GX 354-0
312.6499 12.2773 2.7 39.6 76.1 13.6565 4.3 ------ UNKNOWN
294.4593 43.3034 4.5 52.3 30.0 12.0240 2.6 ------ UNKNOWN
272.8036 48.9599 2.7 55.9 10.8 19.5034 4.3 ------ UNKNOWN
271.5923 42.8821 3.5 49.9 8.8 6.1154 3.3 ------ UNKNOWN
276.2718 30.3524 2.3 37.1 12.6 6.0337 5.1 ------ UNKNOWN
262.9256 48.4407 3.0 56.7 3.0 14.5682 3.8 ------ UNKNOWN
Plot creation:
Thu Nov 5 23:11:11 EST 2020