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
254.1903 -9.1473 0.0953 20.9 -57.2 0.0461 2.0 TRIG_01003313
------------------------------------------
Foreground time interval of the image:
0.000 3.072 (delta_t = 3.072 [sec])
Background time interval of the image:
-179.120 -134.898 (delta_t = 44.222 [sec])
-119.120 -13.120 (delta_t = 106.000 [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 3.072000
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 3.072000
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 3.072000
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 0.000 sec. to 3.072 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.349722 ( -1.8039 0.797621 )
Norm@50keV : 9.68737E-04 ( -0.00089214 0.000773553 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 94.29 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.38e-03 with 57 degrees of freedom
Photon flux (15-150 keV) in 3.072 sec: 0.151137 ( -0.119652 0.0707803 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.67536e-08 ( -2.49869e-08 2.49945e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 3.072 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -9.95662 ( 9.98116 9.57374 )
Epeak [keV] : 80.4761 ( -13.0759 133.61 )
Norm@50keV : 2.96137 ( -3.01635 11.5913 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 91.97 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.74e-03 with 56 degrees of freedom
Photon flux (15-150 keV) in 3.072 sec: 0.140245 0.139124 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 2.72376e-16 ( 0 0 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 3.072 sec.
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.123731 ( 0.141264 0.141264 )
beta : 0.352750 ( -0.801774 1.80283 )
Epeak [keV] : 21.3456 ( -21.4078 -21.4078 )
Norm@50keV : 1.48868E-03 ( -0.00149132 2090.67 )
------------------------------------------------------------
Photon flux (15-150 keV) in 3.072 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] : 58.1291 (-58.1703 -58.1703)
R^2/D10^2 : 6.04410E-04 (-0.00060333 0.00297972)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 93.86 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.52e-03 with 57 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
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-111.14 -200)
Norm : 0.473308 (-0.368588 0.368588)
------------------------------------------------------------
#Fit statistic : Chi-Squared 109.44 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.67e-05 with 57 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
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.00000 (-4 -4)
R1^2/D10^2 : 0.0 (0 4368.94)
kT2 [keV] : 58.7357 (-30.3079 -58.7357)
R2^2/D10^2 : 5.91259E-04 (-0.000538914 0.00299216)
------------------------------------------------------------
#Fit statistic : Chi-Squared 93.86 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 8.54e-04 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 0.000 sec. to 3.072 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.349722 ( -1.8039 0.797621 )
Norm@50keV : 9.68737E-04 ( -0.00089214 0.000773553 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 94.29 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.38e-03 with 57 degrees of freedom
Photon flux (15-150 keV) in 3.072 sec: 0.151137 ( -0.111931 0.0707719 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.67536e-08 ( -2.49869e-08 2.49945e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 3.072 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -9.95662 ( 9.98116 9.57374 )
Epeak [keV] : 80.4761 ( -13.0759 127.038 )
Norm@50keV : 2.96137 ( -3.01635 11.5913 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 91.97 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.74e-03 with 56 degrees of freedom
Photon flux (15-150 keV) in 3.072 sec: 0.140245 0.139124 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 2.72376e-16 ( 0 0 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 3.072 sec.
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.123731 ( 0.141264 0.141264 )
beta : 0.352750 ( -0.801774 1.80274 )
Epeak [keV] : 21.3456 ( -21.4078 -21.4078 )
Norm@50keV : 1.48868E-03 ( -0.00149132 2090.66 )
------------------------------------------------------------
Photon flux (15-150 keV) in 3.072 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] : 58.1291 (-58.1703 -58.1703)
R^2/D10^2 : 6.04410E-04 (-0.00060333 0.00297972)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 93.86 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.52e-03 with 57 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
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-111.14 -200)
Norm : 0.473308 (-0.368588 0.368588)
------------------------------------------------------------
#Fit statistic : Chi-Squared 109.44 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.67e-05 with 57 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
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.00000 (-4 -4)
R1^2/D10^2 : 0.0 (0 9276.51)
kT2 [keV] : 58.7357 (-30.3079 -58.7357)
R2^2/D10^2 : 5.91259E-04 (-0.000538914 0.00299216)
------------------------------------------------------------
#Fit statistic : Chi-Squared 93.86 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 8.54e-04 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: -0.349722 ( -1.8039 0.797621 )
Norm@50keV : 9.68737E-04 ( -0.00089214 0.000773553 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 94.29 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.38e-03 with 57 degrees of freedom
Photon flux (15-150 keV) in 3.072 sec: 0.151137 ( -0.111931 0.0707718 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.67536e-08 ( -2.49869e-08 2.49945e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -9.95662 ( 9.98116 9.57374 )
Epeak [keV] : 80.4761 ( -13.0759 138.64 )
Norm@50keV : 2.96137 ( -3.01635 11.5913 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 91.97 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.74e-03 with 56 degrees of freedom
Photon flux (15-150 keV) in 3.072 sec: 0.140245 0.139124 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 2.72376e-16 ( 0 0 ) ergs/cm2
Band function
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.123731 ( 0.141264 0.141264 )
beta : 0.352750 ( -0.801774 1.80425 )
Epeak [keV] : 21.3456 ( -21.4078 -21.4078 )
Norm@50keV : 1.48868E-03 ( -0.00149132 2090.64 )
------------------------------------------------------------
Photon flux (15-150 keV) in 3.072 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) = 4.09e-09
S(50-100 keV) = 2.08e-08
T90 vs. Hardness ratio plot
T90 = 3.07200002670288 sec.
Hardness ratio (energy fluence ratio) = 5.08557
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 36.0408
Count Ratio (50-100 keV) / (15-25 keV) = -64.239
Mask shadow pattern
IMX = 2.073226638935020E-01, IMY = 3.212465287099420E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 3.072000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 3.072000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 3.072000
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:
-179.120000 -134.897500
-119.120000 -13.120000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9940 -15.6342 0.4 27.9 -78.3 8.3657 28.6 0.9 Sco X-1
254.5252 35.4344 5.3 55.8 -6.4 -1.2530 -2.2 6.4 Her X-1
255.9370 -37.8139 1.6 26.1 -133.1 1.6281 7.3 3.0 4U 1700-377
256.5338 -36.4325 4.9 24.7 -131.7 0.5034 2.3 4.8 GX 349+2
263.1013 -24.7895 3.3 12.8 -115.7 0.6102 3.5 5.7 GX 1+4
264.5797 -44.3139 6.6 28.3 -152.7 0.3786 1.8 10.8 4U 1735-44
268.2330 -1.4865 3.6 16.7 -7.9 0.5895 3.2 8.4 SW J1753.5-0127
270.0952 -24.9876 26.8 8.7 -142.5 0.0835 0.4 11.7 GX 5-1
270.2907 -25.8366 4.0 9.4 -145.8 0.5610 2.9 5.6 GRS 1758-258
274.1218 -13.8569 0.0 3.3 13.8 0.4281 2.4 12.7 GX 17+2
275.8865 -30.2436 11.2 13.2 -174.0 0.1709 1.0 7.7 H1820-303
284.9093 -25.0549 6.1 12.8 142.7 0.3661 1.9 10.6 HT1900.1-2455
288.8033 10.9247 4.2 31.6 41.3 0.6952 2.7 1.3 GRS 1915+105
262.8183 -33.8671 4.7 19.5 -138.1 0.4406 2.5 8.7 GX 354-0
312.7750 -7.5163 3.8 38.9 93.4 2.1304 3.0 ------ UNKNOWN
294.7092 29.1369 2.6 50.4 36.4 4.3114 4.4 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 3.072000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
245.0628 -15.7659 6.3 27.8 -78.5 0.0565 1.8 8.9 Sco X-1
254.3675 35.2734 7.6 55.7 -6.6 -0.1015 -1.5 6.1 Her X-1
255.7892 -37.7534 5.1 26.1 -132.8 -0.0531 -2.3 10.8 4U 1700-377
256.2378 -36.3179 12.9 24.8 -131.1 0.0209 0.9 11.4 GX 349+2
262.9046 -24.9078 8.0 13.0 -115.7 0.0281 1.4 11.3 GX 1+4
264.7610 -44.3497 7.4 28.3 -153.0 0.0356 1.6 6.1 4U 1735-44
268.1974 -1.3363 0.0 16.8 -7.8 -0.0424 -2.2 12.4 SW J1753.5-0127
270.3527 -25.1722 4.6 8.7 -144.4 -0.0492 -2.7 6.7 GX 5-1
270.3548 -25.5815 5.5 9.1 -145.5 -0.0392 -2.2 10.1 GRS 1758-258
274.1612 -14.0235 5.0 3.1 14.6 -0.0440 -2.3 9.1 GX 17+2
275.7741 -30.4495 9.9 13.4 -173.5 -0.0221 -1.2 9.2 H1820-303
285.0976 -24.7471 5.7 12.8 141.1 0.0375 2.0 10.9 HT1900.1-2455
288.6148 11.0517 9.2 31.7 40.9 -0.0344 -1.3 12.5 GRS 1915+105
262.8433 -33.9890 7.9 19.6 -138.4 0.0272 1.4 11.8 GX 354-0
296.8520 -9.3441 2.1 23.5 86.4 0.1354 5.4 ------ UNKNOWN
231.8475 7.9344 2.3 48.7 -49.5 0.4467 5.0 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
Plot creation:
Sat Oct 31 22:24:49 EDT 2020