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
224.9881 -69.4957 0.0134 37.4 -155.4 0.1980 14.3 TRIG_01118357
------------------------------------------
Foreground time interval of the image:
-0.040 0.280 (delta_t = 0.320 [sec])
Background time interval of the image:
-239.592 -0.040 (delta_t = 239.552 [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 0.064000
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 0.064000
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 0.064000
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 -0.040 sec. to 0.280 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.608331 ( -0.261668 0.245151 )
Norm@50keV : 3.82023E-02 ( -0.00564013 0.00536654 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 42.65 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.21e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 0.32 sec: 4.45583 ( -0.572431 0.575082 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.55708e-07 ( -1.91858e-08 1.91613e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.040 sec. to 0.280 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.599445 ( -0.288128 0.226864 )
Epeak [keV] : 1.00000E+04 ( -10000 -10000 )
Norm@50keV : 3.85154E-02 ( -0.00567292 0.00452111 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 42.72 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.04e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 0.32 sec: 4.45616 ( -0.57459 0.57252 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.56039e-07 ( -1.94541e-08 1.86909e-08 ) ergs/cm2
Band function
Time interval is from -0.040 sec. to 0.280 sec.
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.883091 ( 0.883151 0.883151 )
beta : -0.608393 ( -0.245204 0.26209 )
Epeak [keV] : 12.7234 ( -12.7231 -12.7231 )
Norm@50keV : 5.87982E-02 ( -0.0256452 0 )
------------------------------------------------------------
Photon flux (15-150 keV) in 0.32 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] : 39.4959 (-7.74502 11.793)
R^2/D10^2 : 3.31519E-02 (-0.0157121 0.0259479)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 57.09 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 4.72e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.155e-09 6.510e-10
25- 50 1.464e-08 3.712e-09
50-150 1.378e-07 3.178e-08
15-150 1.546e-07 3.382e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-22.0894 -200)
Norm : 17.9022 (-2.37793 2.37793)
------------------------------------------------------------
#Fit statistic : Chi-Squared 85.62 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 8.42e-03 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.427e-08 8.086e-09
25- 50 2.745e-08 1.522e-08
50-150 6.020e-08 3.374e-08
15-150 1.019e-07 5.725e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.67077 (-2.21898 3.22147)
R1^2/D10^2 : 7.72292 (-6.37412 46.6781)
kT2 [keV] : 53.5550 (-14.0975 34.683)
R2^2/D10^2 : 1.48107E-02 (-0.00969117 0.0167935)
------------------------------------------------------------
#Fit statistic : Chi-Squared 36.21 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.76e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.110e-08 6.231e-09
25- 50 1.884e-08 8.069e-09
50-150 1.351e-07 6.535e-08
15-150 1.650e-07 6.352e-08
Peak spectrum fit
Power-law model
Time interval is from -0.348 sec. to 0.652 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.813581 ( -0.318431 0.294031 )
Norm@50keV : 1.40278E-02 ( -0.00241914 0.00231402 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 52.89 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 6.30e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 1.61154 ( -0.26236 0.264991 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.63001e-07 ( -2.48821e-08 2.49689e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.348 sec. to 0.652 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.812016 ( -0.327437 0.291242 )
Epeak [keV] : 9999.25 ( -9999.36 -9999.36 )
Norm@50keV : 1.41467E-02 ( -0.00221645 0.00903081 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 52.92 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 5.92e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 1.62007 ( -0.27191 0.25638 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.62947e-07 ( -2.4826e-08 2.441e-08 ) ergs/cm2
Band function
Time interval is from -0.348 sec. to 0.652 sec.
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.803911 ( 0.803782 0.803782 )
beta : -0.813680 ( -0.293825 0.318432 )
Epeak [keV] : 14.0280 ( -14.0303 -14.0303 )
Norm@50keV : 2.13252E-02 ( -0.00990573 377529 )
------------------------------------------------------------
Photon flux (15-150 keV) in 1 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] : 32.5091 (-7.55086 11.8869)
R^2/D10^2 : 1.84944E-02 (-0.0104098 0.0211543)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 64.35 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 2.35e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.906e-09 1.081e-09
25- 50 1.850e-08 6.822e-09
50-150 1.333e-07 3.964e-08
15-150 1.547e-07 4.950e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-34.0704 -200)
Norm : 6.85207 (-1.09139 1.09139)
------------------------------------------------------------
#Fit statistic : Chi-Squared 72.07 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 8.62e-02 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.705e-08 9.850e-09
25- 50 3.281e-08 1.860e-08
50-150 7.195e-08 3.955e-08
15-150 1.218e-07 6.815e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.03909 (-3.22373 3.80581)
R1^2/D10^2 : 0.854820 (-0.660922 4.26457)
kT2 [keV] : 54.9488 (-20.0475 -54.9487)
R2^2/D10^2 : 4.23217E-03 (-0.0031434 0.0097652)
------------------------------------------------------------
#Fit statistic : Chi-Squared 50.62 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 6.43e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.132e-08 6.510e-09
25- 50 2.725e-08 1.534e-08
50-150 1.321e-07 7.210e-08
15-150 1.707e-07 8.850e-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: 0.608331 ( -0.261668 0.245151 )
Norm@50keV : 3.82023E-02 ( -0.00564013 0.00536654 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 42.65 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.21e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 0.32 sec: 4.45583 ( -0.572431 0.575082 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.55708e-07 ( -1.91858e-08 1.91613e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.599445 ( -0.288128 0.226864 )
Epeak [keV] : 1.00000E+04 ( -10000 -10000 )
Norm@50keV : 3.85154E-02 ( -0.00567292 0.00452111 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 42.72 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.04e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 0.32 sec: 4.45616 ( -0.57459 0.57252 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.56039e-07 ( -1.94541e-08 1.86909e-08 ) ergs/cm2
Band function
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.883091 ( 0.883151 0.883151 )
beta : -0.608393 ( -0.245204 0.26209 )
Epeak [keV] : 12.7234 ( -12.7231 -12.7231 )
Norm@50keV : 5.87982E-02 ( -0.0256452 0 )
------------------------------------------------------------
Photon flux (15-150 keV) in 0.32 sec: ( ) 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) = 2.18e-08
S(50-100 keV) = 5.71e-08
T90 vs. Hardness ratio plot
T90 = 0.191999793052673 sec.
Hardness ratio (energy fluence ratio) = 2.61927
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.56762
Count Ratio (50-100 keV) / (15-25 keV) = 2.35727
Mask shadow pattern
IMX = -6.962524519058781E-01, IMY = 3.191432145856493E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.064000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.064000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.064000
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:
-239.592000 -0.040000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
186.7396 -62.8587 2.8 49.4 -138.8 5.9654 4.1 5.8 GX 301-2
244.9860 -15.6488 0.5 23.4 -24.3 9.8794 21.6 0.6 Sco X-1
256.1704 -37.8138 14.3 1.7 -142.6 -0.3345 -0.8 8.9 4U 1700-377
256.6411 -36.5543 6.5 0.5 -103.9 0.7744 1.8 12.7 GX 349+2
263.1418 -24.5860 10.2 12.8 31.5 0.4982 1.1 12.0 GX 1+4
264.8459 -44.3582 4.7 9.9 153.2 0.9756 2.5 7.1 4U 1735-44
268.2797 -1.6077 0.0 36.2 25.6 0.2332 0.3 10.7 SW J1753.5-0127
270.1425 -24.9576 7.9 15.9 54.4 0.6362 1.5 10.6 GX 5-1
270.2862 -25.7667 4.9 15.4 56.7 1.0225 2.3 1.7 GRS 1758-258
274.1000 -13.9462 5.1 27.0 45.0 1.2301 2.3 7.7 GX 17+2
276.0412 -30.1869 0.0 16.8 80.6 1.1150 2.4 12.4 H1820-303
284.9718 -24.9050 6.1 26.3 78.7 1.1961 1.9 3.6 HT1900.1-2455
263.1351 -33.6617 0.0 5.5 69.1 0.7723 1.9 12.7 GX 354-0
261.1218 0.8425 2.4 37.4 13.1 2.8723 4.7 ------ UNKNOWN
254.6749 3.8673 2.8 40.3 2.7 2.5293 4.2 ------ UNKNOWN
190.3509 -55.6712 2.3 48.1 -129.1 9.5436 5.1 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-0.040000 0.280000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
186.7736 -62.5914 81.4 49.4 -138.5 0.0055 0.1 11.2 GX 301-2
245.0902 -15.7737 16.5 23.3 -24.2 0.0073 0.7 10.3 Sco X-1
255.8170 -38.0086 0.0 2.0 -138.7 0.0100 1.1 12.7 4U 1700-377
256.4800 -36.5700 8.0 0.7 -101.3 0.0133 1.5 9.1 GX 349+2
263.1685 -24.7185 8.7 12.7 31.9 0.0123 1.3 8.8 GX 1+4
264.8398 -44.2825 4.2 9.8 153.0 -0.0267 -2.7 10.9 4U 1735-44
268.2007 -1.3242 0.0 36.5 25.3 -0.0154 -1.0 12.7 SW J1753.5-0127
270.3671 -24.9467 3.6 16.0 54.9 -0.0328 -3.3 9.1 GX 5-1
270.2070 -25.9119 13.5 15.2 56.9 -0.0089 -0.9 11.4 GRS 1758-258
273.8174 -13.9262 0.0 26.9 44.4 0.0149 1.3 12.8 GX 17+2
275.9246 -30.3361 13.6 16.7 80.9 0.0094 0.8 1.9 H1820-303
285.0354 -24.7772 6.6 26.4 78.5 -0.0245 -1.7 8.6 HT1900.1-2455
263.1351 -33.6617 0.0 5.5 69.1 -0.0076 -0.8 12.7 GX 354-0
318.8437 -47.6906 1.9 45.9 131.1 0.2324 6.2 ------ UNKNOWN
319.7224 -58.8551 2.3 45.6 146.8 0.1377 5.1 ------ UNKNOWN
246.0944 0.2431 2.5 38.1 -11.6 0.0591 4.7 ------ UNKNOWN
224.9880 -69.4957 0.8 37.4 -155.4 0.1979 14.3 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
90.308600 681.108590
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.3513 -60.6564 1.8 23.7 -97.4 6.3261 6.4 2.3 Cen X-3
186.5872 -62.7595 0.8 16.6 -86.9 11.9839 13.9 2.0 GX 301-2
256.0621 -37.6787 0.0 35.9 42.4 -2.6562 -1.6 10.6 4U 1700-377
256.3846 -36.2923 4.5 37.3 42.1 4.4447 2.6 8.2 GX 349+2
264.7709 -44.4279 6.2 32.0 57.8 2.6968 1.9 1.8 4U 1735-44
263.1528 -33.8800 7.7 41.3 49.2 3.2595 1.5 8.6 GX 354-0
259.4157 -49.6086 2.6 25.7 55.8 5.0034 4.4 ------ UNKNOWN
13.8342 -61.8483 2.7 46.8 158.7 11.4051 4.3 ------ UNKNOWN
Plot creation:
Sun Jul 31 20:36:55 EDT 2022