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
244.8386 -15.7675 0.0059 28.4 -61.6 39.0381 32.3 TRIG_00868839
------------------------------------------
Foreground time interval of the image:
-17.699 779.740 (delta_t = 797.439 [sec])
781.000 851.460 (delta_t = 70.460 [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
-121.488000 779.740000
781.000000 851.460000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 6.42895 ( -0.262905 0.262215 )
Norm@50keV : 8.51706E-05 ( -1.74271e-05 2.09805e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 79.61 using 59 PHA bins.
# Reduced chi-squared = 1.397 for 57 degrees of freedom
# Null hypothesis probability = 2.560940e-02
Photon flux (15-150 keV) in 971.7 sec: 0.541070 ( -0.04206 0.0425361 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.54858e-05 ( -1.10265e-06 1.11361e-06 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-121.488000 779.740000
781.000000 851.460000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 1.43377E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 700.64 using 59 PHA bins.
# Reduced chi-squared = 12.511 for 56 degrees of freedom
# Null hypothesis probability = 3.593242e-112
Photon flux (15-150 keV) in 971.7 sec: 0.503150 ( -0.05158 0.050176 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.44259e-05 ( -1.34687e-06 1.30927e-06 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
-121.488000 779.740000
781.000000 851.460000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 1.37658 ( -2.21963 1.86603 )
beta : -8.65336 ( 8.53341 1.20603 )
Epeak [keV] : 9.35831 ( -1.70116 2.36833 )
Norm@50keV : 168.151 ( -171.39 48676.3 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.33 using 59 PHA bins.
# Reduced chi-squared = 1.079 for 55 degrees of freedom
# Null hypothesis probability = 3.207630e-01
Photon flux (15-150 keV) in 971.7 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] : 2.57982 (-0.116078 0.126981)
R^2/D10^2 : 197.680 (-67.1429 98.8994)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.43 using 59 PHA bins.
# Reduced chi-squared = 1.060 for 57 degrees of freedom
# Null hypothesis probability = 3.530404e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.320e-05 1.598e-06
25- 50 1.100e-06 1.442e-07
50-150 4.705e-10 2.385e-10
15-150 1.430e-05 1.462e-06
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 4.35124 (-0.280749 0.318637)
Norm : 204.755 (-60.3919 83.9048)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.80 using 59 PHA bins.
# Reduced chi-squared = 1.084 for 57 degrees of freedom
# Null hypothesis probability = 3.086829e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.363e-05 1.564e-06
25- 50 1.236e-06 1.618e-07
50-150 3.024e-09 1.304e-09
15-150 1.487e-05 1.594e-06
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.54539 (-2.52239 0.167643)
R1^2/D10^2 : 215.315 (-92.7179 199.278)
kT2 [keV] : 6.60539 (-6.65146 -6.65146)
R2^2/D10^2 : 1.54687E-02 (-0.0243021 277.396)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.80 using 59 PHA bins.
# Reduced chi-squared = 1.087 for 55 degrees of freedom
# Null hypothesis probability = 3.058271e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.317e-05 2.310e-06
25- 50 1.153e-06 3.688e-07
50-150 1.651e-08 2.262e-08
15-150 1.434e-05 2.954e-06
Peak spectrum fit
Power-law model
Time interval is from 147.536 sec. to 148.536 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 4.22108 ( -0.947094 1.2243 )
Norm@50keV : 1.42167E-03 ( -0.00142167 0.00195396 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.19 using 59 PHA bins.
# Reduced chi-squared = 0.9683 for 57 degrees of freedom
# Null hypothesis probability = 5.431739e-01
Photon flux (15-150 keV) in 1 sec: 1.06596 ( -0.261727 0.263181 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.69468e-08 ( -1.08888e-08 1.26664e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 147.536 sec. to 148.536 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 1.63134E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 79.79 using 59 PHA bins.
# Reduced chi-squared = 1.425 for 56 degrees of freedom
# Null hypothesis probability = 2.007478e-02
Photon flux (15-150 keV) in 1 sec: 1.06188 1.03999 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.22604e-15 ( 0 0 ) ergs/cm2
Band function
Time interval is from 147.536 sec. to 148.536 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.77799 ( 1.77799 1.77799 )
beta : -5.43703 ( 5.36384 2.0534 )
Epeak [keV] : 1.93436 ( -1.93407 3.5548 )
Norm@50keV : 0.142904 ( -0.0734721 3.59776e+07 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.97 using 59 PHA bins.
# Reduced chi-squared = 0.9995 for 55 degrees of freedom
# Null hypothesis probability = 4.756191e-01
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] : 3.36593 (-0.748002 0.885932)
R^2/D10^2 : 73.2582 (-73.2583 271.319)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.08 using 59 PHA bins.
# Reduced chi-squared = 0.9663 for 57 degrees of freedom
# Null hypothesis probability = 5.473914e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.705e-08 1.526e-08
25- 50 5.793e-09 3.773e-09
50-150 2.252e-11 2.358e-11
15-150 3.286e-08 1.838e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 7.26595 (-2.46417 4.20206)
Norm : 76.1464 (-48.4928 179.913)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.12 using 59 PHA bins.
# Reduced chi-squared = 0.9669 for 57 degrees of freedom
# Null hypothesis probability = 5.460926e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.637e-08 1.536e-08
25- 50 6.984e-09 4.503e-09
50-150 1.771e-10 1.861e-10
15-150 3.353e-08 1.896e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.24468 (-0.741158 0.846533)
R1^2/D10^2 : 88.5677 (-65.1603 249.643)
kT2 [keV] : 51.6270 (-34.4925 -51.6196)
R2^2/D10^2 : 9.98490E-04 (-0.000970009 0.0189516)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.00 using 59 PHA bins.
# Reduced chi-squared = 0.9090 for 55 degrees of freedom
# Null hypothesis probability = 6.657178e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.680e-08 1.469e-08
25- 50 7.104e-09 3.760e-09
50-150 2.601e-08 1.689e-08
15-150 5.991e-08 3.111e-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: 6.34838 ( -0.268889 0.268572 )
Norm@50keV : 9.18561E-05 ( -1.92633e-05 2.3292e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 77.98 using 59 PHA bins.
# Reduced chi-squared = 1.368 for 57 degrees of freedom
# Null hypothesis probability = 3.391269e-02
Photon flux (15-150 keV) in 867.9 sec: 0.537572 ( -0.0421188 0.0425808 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.37888e-05 ( -9.87149e-07 9.96922e-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 : 1.52244E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 670.30 using 59 PHA bins.
# Reduced chi-squared = 11.970 for 56 degrees of freedom
# Null hypothesis probability = 4.231935e-106
Photon flux (15-150 keV) in 867.9 sec: 0.502018 ( -0.051329 0.049868 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.28782e-05 ( -1.19926e-06 1.16507e-06 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 1.32302 ( -1.91461 2.78903 )
beta : -8.46398 ( 8.32793 1.17996 )
Epeak [keV] : 9.35897 ( -1.59758 3.14791 )
Norm@50keV : 142.693 ( -142.679 46334.3 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.67 using 59 PHA bins.
# Reduced chi-squared = 1.085 for 55 degrees of freedom
# Null hypothesis probability = 3.096365e-01
Photon flux (15-150 keV) in 867.9 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) = 1.54e-06
S(50-100 keV) = 7.13e-08
T90 vs. Hardness ratio plot
T90 = 642.231999874115 sec.
Hardness ratio (energy fluence ratio) = 0.0462987
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.0871153
Count Ratio (50-100 keV) / (15-25 keV) = -0.00803831
Mask shadow pattern
IMX = 2.570375354946255E-01, IMY = 4.756083674126552E-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:
-17.699400 779.740000
781.000000 851.460000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.3260 -60.5349 5.5 55.0 -173.0 6.5290 2.1 5.3 Cen X-3
186.3148 -62.8652 3.5 47.0 -173.3 5.5085 3.3 11.0 GX 301-2
244.8694 -15.7330 0.4 28.4 -61.5 37.1955 30.9 8.5 Sco X-1
255.8560 -37.9308 2.8 4.4 -76.4 3.3252 4.1 8.1 4U 1700-377
256.4693 -36.5536 2.8 5.2 -61.8 3.2687 4.1 8.0 GX 349+2
262.9597 -24.5645 1494.1 16.6 -20.1 0.0058 0.0 11.2 GX 1+4
264.8448 -44.6395 8.9 5.1 106.5 1.1369 1.3 12.2 4U 1735-44
268.3825 -1.4296 8.4 40.3 -16.7 -1.6991 -1.4 1.6 SW J1753.5-0127
270.1901 -25.1737 2.7 18.0 1.7 3.7426 4.3 7.6 GX 5-1
270.4732 -25.6645 346.5 17.7 3.1 0.0312 0.0 10.4 GRS 1758-258
273.9230 -14.1652 3.6 29.5 -1.4 3.2971 3.2 9.1 GX 17+2
276.1164 -30.2721 10.4 17.0 25.9 -0.9304 -1.1 11.4 H1820-303
285.1812 -24.9659 6.9 26.4 30.5 1.7425 1.7 8.4 HT1900.1-2455
262.9867 -33.6708 166.3 7.7 -10.3 -0.0600 -0.1 9.8 GX 354-0
299.0120 -58.2295 4.3 30.0 108.4 3.5971 2.7 ------ UNKNOWN
295.1362 -10.0246 3.8 43.9 25.2 4.7840 3.0 ------ UNKNOWN
291.9786 -5.9651 2.8 45.3 18.1 6.5621 4.1 ------ UNKNOWN
280.1634 -13.4878 3.0 32.7 8.6 3.7601 3.9 ------ UNKNOWN
213.7725 -64.7997 3.9 35.3 -177.9 3.8780 3.0 ------ UNKNOWN
250.1438 -41.0000 2.3 7.3 -123.1 3.6619 5.0 ------ UNKNOWN
273.9051 16.8815 3.0 59.3 -14.3 18.0154 3.8 ------ UNKNOWN
UNKNOWN
UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
Plot creation:
Sat Oct 27 01:42:42 EDT 2018