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
242.9887 -52.6820 0.0229 36.9 173.2 0.4255 8.4 TRIG_00994727
------------------------------------------
Foreground time interval of the image:
-0.708 5.996 (delta_t = 6.704 [sec])
Background time interval of the image:
-239.512 -140.012 (delta_t = 99.500 [sec])
-138.512 -0.708 (delta_t = 137.804 [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 4.096000
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 4.096000
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 4.096000
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 -0.708 sec. to 5.996 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 5.24361 ( -0.69008 0.809822 )
Norm@50keV : 3.54556E-04 ( -0.000206893 0.000349455 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.35 using 59 PHA bins.
# Reduced chi-squared = 0.9360 for 57 degrees of freedom
# Null hypothesis probability = 6.128177e-01
Photon flux (15-150 keV) in 6.704 sec: 0.691490 ( -0.118834 0.119005 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.45663e-07 ( -2.72086e-08 2.80014e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.708 sec. to 5.996 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 5.46846E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 131.28 using 59 PHA bins.
# Reduced chi-squared = 2.3443 for 56 degrees of freedom
# Null hypothesis probability = 5.522337e-08
Photon flux (15-150 keV) in 6.704 sec: 0.704463 ( -0.116888 0.11692 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.4382e-07 ( -2.46908e-08 2.51876e-08 ) ergs/cm2
Band function
Time interval is from -0.708 sec. to 5.996 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -8.76344 ( 8.76344 8.76344 )
beta : -5.25936 ( -0.797367 0.703398 )
Epeak [keV] : 2.27143 ( -2.27143 -2.27143 )
Norm@50keV : 4.73848E-02 ( -0.0276097 0.0480186 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.35 using 59 PHA bins.
# Reduced chi-squared = 0.9700 for 55 degrees of freedom
# Null hypothesis probability = 5.378757e-01
Photon flux (15-150 keV) in 6.704 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] : 2.89021 (-0.431677 0.497949)
R^2/D10^2 : 128.252 (-128.252 262.969)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.10 using 59 PHA bins.
# Reduced chi-squared = 0.8789 for 57 degrees of freedom
# Null hypothesis probability = 7.296186e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.270e-07 7.113e-08
25- 50 1.623e-08 9.886e-09
50-150 1.920e-11 2.048e-11
15-150 1.433e-07 7.951e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 5.56206 (-1.21259 1.59969)
Norm : 112.811 (-60.9323 159.103)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.29 using 59 PHA bins.
# Reduced chi-squared = 0.8823 for 57 degrees of freedom
# Null hypothesis probability = 7.230558e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.246e-07 5.691e-08
25- 50 1.985e-08 1.189e-08
50-150 1.715e-10 1.743e-10
15-150 1.446e-07 7.354e-08
Double BB
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.10 using 59 PHA bins.
#Fit statistic : Chi-Squared = 49.93 using 59 PHA bins.
#Fit statistic : Chi-Squared = 49.87 using 59 PHA bins.
#Fit statistic : Chi-Squared = 49.86 using 59 PHA bins.
# Reduced chi-squared = 0.9108 for 55 degrees of freedom
# Reduced chi-squared = 0.9077 for 55 degrees of freedom
# Reduced chi-squared = 0.9068 for 55 degrees of freedom
# Reduced chi-squared = 0.9065 for 55 degrees of freedom
# Null hypothesis probability = 6.621014e-01
# Null hypothesis probability = 6.683680e-01
# Null hypothesis probability = 6.703640e-01
# Null hypothesis probability = 6.709149e-01
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 -0.742 sec. to 0.258 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 5.63349 ( -1.71063 2.96079 )
Norm@50keV : 2.36779E-04 ( -0.000236777 0.00108669 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 78.29 using 59 PHA bins.
# Reduced chi-squared = 1.374 for 57 degrees of freedom
# Null hypothesis probability = 3.215950e-02
Photon flux (15-150 keV) in 1 sec: 0.676309 ( -0.28185 0.274412 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.072e-08 ( -9.62194e-09 1.05717e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.742 sec. to 0.258 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 7.77707E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 94.84 using 59 PHA bins.
# Reduced chi-squared = 1.694 for 56 degrees of freedom
# Null hypothesis probability = 9.171131e-04
Photon flux (15-150 keV) in 1 sec: 0.674198 ( -0.280009 0.280336 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.06296e-08 ( -9.4435e-09 1.0499e-08 ) ergs/cm2
Band function
Time interval is from -0.742 sec. to 0.258 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -8.38749 ( )
beta : -5.33565 ( )
Epeak [keV] : 4.00936 ( )
Norm@50keV : 4.47125E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 78.36 using 59 PHA bins.
# Reduced chi-squared = 1.425 for 55 degrees of freedom
# Null hypothesis probability = 2.097893e-02
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] : 2.52868 (-1.03954 1.39978)
R^2/D10^2 : 314.340 (-316.475 24730.1)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 78.95 using 59 PHA bins.
# Reduced chi-squared = 1.385 for 57 degrees of freedom
# Null hypothesis probability = 2.872467e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.873e-08 1.056e-08
25- 50 1.441e-09 9.915e-10
50-150 5.088e-13 6.745e-13
15-150 2.017e-08 1.241e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 4.81923 (-2.50605 4.52184)
Norm : 183.137 (-183.137 5595.28)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 78.47 using 59 PHA bins.
# Reduced chi-squared = 1.377 for 57 degrees of freedom
# Null hypothesis probability = 3.118872e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.854e-08 1.109e-08
25- 50 2.153e-09 1.529e-09
50-150 9.237e-12 1.256e-11
15-150 2.070e-08 1.288e-08
Double BB
R1^2/D10^2 : 333.084 (-310.01 24273.1)
kT2 [keV] : 199.363 (-199.363 -199.363)
R2^2/D10^2 : 8.95438E-05 (-7.01053e-05 0.00229972)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 75.16 using 59 PHA bins.
#Fit statistic : Chi-Squared = 74.94 using 59 PHA bins.
#Fit statistic : Chi-Squared = 74.63 using 59 PHA bins.
# Reduced chi-squared = 1.366 for 55 degrees of freedom
# Reduced chi-squared = 1.363 for 55 degrees of freedom
# Reduced chi-squared = 1.357 for 55 degrees of freedom
# Null hypothesis probability = 3.679975e-02
# Null hypothesis probability = 3.815707e-02
# Null hypothesis probability = 4.024503e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.875e-08 1.100e-08
25- 50 3.671e-09 1.975e-09
50-150 2.282e-08 6.745e-09
15-150 4.523e-08 1.431e-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: 5.24361 ( -0.69008 0.809822 )
Norm@50keV : 3.54556E-04 ( -0.000206893 0.000349455 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.35 using 59 PHA bins.
# Reduced chi-squared = 0.9360 for 57 degrees of freedom
# Null hypothesis probability = 6.128177e-01
Photon flux (15-150 keV) in 6.704 sec: 0.691490 ( -0.118834 0.119005 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.45663e-07 ( -2.72086e-08 2.80014e-08 ) 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 : 5.46846E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 131.28 using 59 PHA bins.
# Reduced chi-squared = 2.3443 for 56 degrees of freedom
# Null hypothesis probability = 5.522337e-08
Photon flux (15-150 keV) in 6.704 sec: 0.704463 ( -0.116888 0.11692 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.4382e-07 ( -2.46908e-08 2.51876e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -8.76344 ( 8.76344 8.76344 )
beta : -5.25936 ( -0.797367 0.703398 )
Epeak [keV] : 2.27143 ( -2.27143 -2.27143 )
Norm@50keV : 4.73848E-02 ( -0.0276097 0.0480186 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.35 using 59 PHA bins.
# Reduced chi-squared = 0.9700 for 55 degrees of freedom
# Null hypothesis probability = 5.378757e-01
Photon flux (15-150 keV) in 6.704 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) = 2.49e-08
S(50-100 keV) = 2.63e-09
T90 vs. Hardness ratio plot
T90 = 6.15600001811981 sec.
Hardness ratio (energy fluence ratio) = 0.105622
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.00783622
Count Ratio (50-100 keV) / (15-25 keV) = -0.00894596
Mask shadow pattern
IMX = -7.445171206186570E-01, IMY = -8.917207305331534E-02
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 4.096000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 4.096000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 4.096000
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:
-239.512000 -140.012000
-138.512000 -0.708000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9544 -15.7882 0.5 0.1 -22.5 7.9426 23.6 9.0 Sco X-1
254.3540 35.3948 6.6 52.0 0.9 1.3708 1.7 6.0 Her X-1
256.0517 -37.9923 6.1 24.2 149.5 0.6923 1.9 9.4 4U 1700-377
256.3353 -36.2741 22.3 22.8 147.0 -0.1836 -0.5 10.2 GX 349+2
263.0912 -24.7337 9.9 19.1 111.7 0.4468 1.2 4.5 GX 1+4
264.8506 -44.3512 3.4 33.1 144.7 -1.6474 -3.4 7.5 4U 1735-44
268.3098 -1.3022 5.3 27.2 51.1 -1.0155 -2.2 9.7 SW J1753.5-0127
270.1219 -25.0016 10.8 25.2 106.5 -0.4871 -1.1 10.0 GX 5-1
270.1390 -25.6865 9.2 25.4 108.0 -0.5634 -1.3 9.5 GRS 1758-258
274.0963 -13.9072 10.2 28.2 81.1 -0.5560 -1.1 9.4 GX 17+2
275.8945 -30.2379 4.4 31.7 113.6 -1.5233 -2.6 7.9 H1820-303
285.0044 -24.8046 210.3 38.4 101.3 -0.0522 -0.1 7.2 HT1900.1-2455
263.1423 -33.8233 4.9 24.3 132.2 -0.9700 -2.3 7.7 GX 354-0
268.7496 -59.0074 2.8 46.6 154.6 4.0289 4.2 ------ UNKNOWN
238.1541 -71.6670 3.3 56.0 173.7 5.3083 3.5 ------ UNKNOWN
236.4537 20.1887 2.6 37.0 -22.2 1.8251 4.5 ------ UNKNOWN
238.7657 40.0342 4.1 56.2 -14.5 3.4004 2.9 ------ UNKNOWN
213.3433 -28.9318 3.9 31.9 -128.5 1.5511 3.0 ------ UNKNOWN
228.3222 25.8365 3.5 44.7 -30.3 2.0549 3.3 ------ UNKNOWN
230.6459 37.8303 3.5 55.3 -22.6 3.6099 3.3 ------ UNKNOWN
204.1114 -7.6738 4.4 40.8 -92.1 3.9142 2.7 ------ UNKNOWN
UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-0.708000 5.996000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.8292 -15.5948 6.0 0.3 -36.8 0.0614 1.9 9.1 Sco X-1
254.3435 35.3466 5.2 52.0 0.9 0.2178 2.2 5.6 Her X-1
255.9452 -37.9901 16.0 24.2 149.7 -0.0308 -0.7 9.0 4U 1700-377
256.2664 -36.3606 15.9 22.8 147.2 0.0302 0.7 9.0 GX 349+2
262.8475 -24.7068 6.6 18.9 111.9 0.0665 1.7 9.1 GX 1+4
264.7033 -44.5471 5.4 33.2 145.1 0.1148 2.2 6.1 4U 1735-44
268.4475 -1.6061 5.8 27.2 51.9 -0.0984 -2.0 10.4 SW J1753.5-0127
270.4021 -25.1470 2.9 25.5 106.7 0.1913 3.9 7.6 GX 5-1
270.1410 -25.6115 0.0 25.4 107.9 -0.0390 -0.8 11.8 GRS 1758-258
273.8511 -14.1580 4.2 27.9 81.6 -0.1570 -2.7 11.6 GX 17+2
276.0935 -30.2301 5.0 31.9 113.5 0.1448 2.3 12.0 H1820-303
285.0005 -25.0458 28.7 38.5 101.7 0.0462 0.4 7.8 HT1900.1-2455
263.1672 -33.7808 9.2 24.3 132.1 0.0551 1.3 9.4 GX 354-0
249.6064 -71.9721 2.9 56.2 169.4 0.8272 4.0 ------ UNKNOWN
242.9888 -52.6821 1.4 36.9 173.2 0.4259 8.4 ------ UNKNOWN
236.7349 -60.0586 2.2 44.6 177.0 0.3376 5.2 ------ UNKNOWN
246.7835 -1.1048 2.8 14.9 -1.7 0.1428 4.1 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
96.188590 178.878000
180.488000 598.188580
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.3166 -60.6251 43.3 38.6 -144.3 0.2237 0.3 0.1 Cen X-3
186.3460 -62.8037 40.7 30.7 -144.6 0.2139 0.3 8.8 GX 301-2
244.9793 -15.6438 64.2 37.1 -9.9 0.1331 0.2 0.2 Sco X-1
256.1604 -38.0045 0.0 17.3 24.0 -0.3341 -0.6 12.7 4U 1700-377
256.4042 -36.5587 97.2 18.7 22.5 -0.0698 -0.1 8.3 GX 349+2
263.0081 -24.7462 50.0 31.8 23.1 0.1605 0.2 0.1 GX 1+4
264.7244 -44.5964 11.1 16.4 56.0 0.6366 1.0 8.8 4U 1735-44
270.3705 -25.0965 87.3 34.4 34.4 -0.1275 -0.1 4.8 GX 5-1
270.1594 -25.7806 9.6 33.7 34.7 -1.1443 -1.2 8.1 GRS 1758-258
273.9453 -14.0022 7.1 45.8 31.1 1.8340 1.6 4.1 GX 17+2
275.9582 -30.2265 9.8 32.9 47.0 -1.1861 -1.2 8.6 H1820-303
285.0229 -25.0500 6.6 41.9 52.3 2.3892 1.7 7.8 HT1900.1-2455
263.1620 -33.8745 6.2 23.7 32.4 -1.2089 -1.9 8.9 GX 354-0
345.1586 -73.9464 2.9 43.2 143.8 6.2181 4.0 ------ UNKNOWN
262.9280 0.5608 2.8 55.8 11.3 9.1894 4.2 ------ UNKNOWN
71.3965 -78.5114 2.6 48.7 169.2 7.9520 4.5 ------ UNKNOWN
230.8633 -72.4283 2.6 20.4 177.5 2.3478 4.5 ------ UNKNOWN
231.2854 -63.9484 2.8 12.8 -169.1 2.2737 4.1 ------ UNKNOWN
Plot creation:
Sun Sep 6 17:25:56 EDT 2020