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
245.7577 -15.9936 0.0133 0.2 -76.2 2.0858 14.5 TRIG_01209371
------------------------------------------
Foreground time interval of the image:
0.000 64.000 (delta_t = 64.000 [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
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 6.23050 ( -0.49069 0.513324 )
Norm@50keV : 6.41597E-05 ( -2.63138e-05 3.92092e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.57 using 59 PHA bins.
# Reduced chi-squared = 0.8346 for 57 degrees of freedom
# Null hypothesis probability = 8.087939e-01
Photon flux (15-150 keV) in 64 sec: 0.333126 ( -0.0353206 0.0353385 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.33389e-07 ( -6.6329e-08 6.6343e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 1.65006E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 257.73 using 59 PHA bins.
# Reduced chi-squared = 4.6024 for 56 degrees of freedom
# Null hypothesis probability = 1.179810e-27
Photon flux (15-150 keV) in 64 sec: 0.335454 ( -0.03776 0.037611 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.2265e-07 ( -6.71744e-08 6.6592e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.71589 ( )
beta : -8.40496 ( )
Epeak [keV] : 6.42156 ( )
Norm@50keV : 4.94360E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 172.47 using 59 PHA bins.
# Reduced chi-squared = 3.1359 for 55 degrees of freedom
# Null hypothesis probability = 4.794889e-14
Photon flux (15-150 keV) in 64 sec: 0.333846 0.337669 ( ) 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] : 2.39711 (-0.195642 0.221277)
R^2/D10^2 : 229.148 (-115.61 233.59)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 39.69 using 59 PHA bins.
# Reduced chi-squared = 0.6963 for 57 degrees of freedom
# Null hypothesis probability = 9.606709e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.895e-07 1.466e-07
25- 50 3.645e-08 1.212e-08
50-150 7.561e-12 6.397e-12
15-150 6.260e-07 2.084e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 4.13294 (-0.495415 0.601003)
Norm : 164.356 (-73.7991 137.088)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.828e-07 1.233e-07
25- 50 4.630e-08 1.591e-08
50-150 8.352e-11 7.285e-11
15-150 6.292e-07 1.599e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.39531 (-0.209956 0.218284)
R1^2/D10^2 : 230.396 (-112.177 247.766)
kT2 [keV] : 200.000 (-200 -200)
R2^2/D10^2 : 1.43212E-06 (-1.43212e-06 -1.43212e-06)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.904e-07 1.500e-07
25- 50 3.740e-08 1.298e-08
50-150 8.245e-12 7.379e-12
15-150 6.278e-07 1.552e-07
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 6.23050 ( -0.49069 0.513324 )
Norm@50keV : 6.41597E-05 ( -2.63138e-05 3.92092e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.57 using 59 PHA bins.
# Reduced chi-squared = 0.8346 for 57 degrees of freedom
# Null hypothesis probability = 8.087939e-01
Photon flux (15-150 keV) in 64 sec: 0.333126 ( -0.0353206 0.0353385 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.33389e-07 ( -6.6329e-08 6.6343e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 1.65006E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 257.73 using 59 PHA bins.
# Reduced chi-squared = 4.6024 for 56 degrees of freedom
# Null hypothesis probability = 1.179810e-27
Photon flux (15-150 keV) in 64 sec: 0.335454 ( -0.03776 0.037611 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.2265e-07 ( -6.71744e-08 6.6592e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.71589 ( )
beta : -8.40496 ( )
Epeak [keV] : 6.42156 ( )
Norm@50keV : 4.94360E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 172.47 using 59 PHA bins.
# Reduced chi-squared = 3.1359 for 55 degrees of freedom
# Null hypothesis probability = 4.794889e-14
Photon flux (15-150 keV) in 64 sec: 0.333846 0.337669 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Single BB
XSPEC: quit
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 2.39711 (-0.195642 0.221277)
R^2/D10^2 : 229.148 (-115.61 233.59)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.895e-07 1.587e-07
25- 50 3.645e-08 1.219e-08
50-150 7.561e-12 6.222e-12
15-150 6.260e-07 1.988e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 4.13294 (-0.495415 0.601003)
Norm : 164.356 (-73.7991 137.088)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.828e-07 1.460e-07
25- 50 4.630e-08 1.617e-08
50-150 8.352e-11 6.979e-11
15-150 6.292e-07 1.302e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.39531 (-0.209956 0.218284)
R1^2/D10^2 : 230.396 (-112.177 247.766)
kT2 [keV] : 200.000 (-200 -200)
R2^2/D10^2 : 1.43212E-06 (-1.43212e-06 -1.43212e-06)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.904e-07 1.713e-07
25- 50 3.740e-08 1.277e-08
50-150 8.245e-12 7.649e-12
15-150 6.278e-07 1.721e-07
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: 6.23050 ( -0.49069 0.513324 )
Norm@50keV : 6.41597E-05 ( -2.63138e-05 3.92092e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.57 using 59 PHA bins.
# Reduced chi-squared = 0.8346 for 57 degrees of freedom
# Null hypothesis probability = 8.087939e-01
Photon flux (15-150 keV) in 64 sec: 0.333126 ( -0.0353206 0.0353385 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.33389e-07 ( -6.6329e-08 6.6343e-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 : 1.65006E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 257.73 using 59 PHA bins.
# Reduced chi-squared = 4.6024 for 56 degrees of freedom
# Null hypothesis probability = 1.179810e-27
Photon flux (15-150 keV) in 64 sec: 0.335454 ( -0.03776 0.037611 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.2265e-07 ( -6.71744e-08 6.6592e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.71589 ( )
beta : -8.40496 ( )
Epeak [keV] : 6.42156 ( )
Norm@50keV : 4.94360E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 172.47 using 59 PHA bins.
# Reduced chi-squared = 3.1359 for 55 degrees of freedom
# Null hypothesis probability = 4.794889e-14
Photon flux (15-150 keV) in 64 sec: 0.333846 0.337669 ( ) 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) = 6.91e-08
S(50-100 keV) = 3.68e-09
T90 vs. Hardness ratio plot
T90 = 64 sec.
Hardness ratio (energy fluence ratio) = 0.0532562
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.0405408
Count Ratio (50-100 keV) / (15-25 keV) = -0.00885683
Mask shadow pattern
IMX = 9.394857286418277E-04, IMY = 3.818496168312019E-03
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:
0.000000 64.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
245.1684 -15.5313 0.0 0.5 120.2 -0.0985 -0.7 12.7 Sco X-1
254.5376 35.2634 6.3 51.9 175.4 -0.9614 -1.8 6.2 Her X-1
255.9796 -37.6965 32.0 23.7 -34.9 -0.0539 -0.4 8.9 4U 1700-377
256.3609 -36.2688 7.4 22.5 -37.2 -0.2309 -1.6 9.9 GX 349+2
262.8218 -24.8688 0.0 18.5 -72.1 0.1446 0.9 12.6 GX 1+4
264.8128 -44.3085 6.0 32.8 -39.8 -0.3236 -1.9 9.0 4U 1735-44
268.5252 -1.3446 0.0 26.9 -134.4 0.4547 3.0 11.4 SW J1753.5-0127
270.1489 -25.1534 1729.5 24.8 -78.0 0.0010 0.0 8.6 GX 5-1
270.3026 -25.7413 10.5 25.1 -76.8 -0.1766 -1.1 0.1 GRS 1758-258
273.9727 -13.8963 7.3 27.5 -104.3 0.2884 1.6 8.6 GX 17+2
275.7902 -30.4906 4.5 31.2 -70.7 0.5185 2.6 10.2 H1820-303
284.8850 -24.9127 30.0 37.8 -83.6 -0.1393 -0.4 8.2 HT1900.1-2455
263.0487 -33.6957 8.3 23.8 -52.3 -0.2364 -1.4 8.9 GX 354-0
245.7560 -15.9924 0.8 0.2 -76.3 2.0460 14.2 ------ UNKNOWN
279.5718 20.5339 3.3 49.4 -150.3 1.1145 3.5 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
77.900640 243.091400
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.8664 -15.4583 0.0 1.0 107.0 0.4830 1.6 12.7 Sco X-1
254.3400 35.3489 7.4 52.0 175.0 1.5761 1.5 5.8 Her X-1
255.8207 -37.7785 14.9 23.5 -34.1 -0.2402 -0.8 8.8 4U 1700-377
256.4900 -36.2853 6.2 22.4 -37.0 -0.5928 -1.9 8.7 GX 349+2
262.8324 -24.8062 6.7 18.2 -72.2 0.5983 1.7 10.3 GX 1+4
264.8319 -44.5085 5.6 32.8 -39.4 -0.7877 -2.1 5.2 4U 1735-44
268.2914 -1.4473 5.8 26.5 -134.8 -0.6518 -2.0 4.6 SW J1753.5-0127
270.3048 -25.1160 3.2 24.7 -78.1 1.2517 3.7 2.5 GX 5-1
270.3983 -25.6335 4.6 24.9 -77.0 -0.9939 -2.9 8.4 GRS 1758-258
273.9699 -13.9369 10.7 27.3 -104.3 -0.4149 -1.1 6.3 GX 17+2
275.8174 -30.2811 5.4 31.0 -71.0 -0.8882 -2.1 7.6 H1820-303
285.1790 -24.9290 4.0 37.9 -83.6 -2.0616 -2.9 7.8 HT1900.1-2455
263.0881 -33.9830 9.0 23.8 -51.6 0.4339 1.3 10.2 GX 354-0
245.8108 -15.9797 0.8 0.0 -100.2 4.6536 14.7 ------ UNKNOWN
256.7455 -49.1050 1.8 34.3 -26.6 2.3396 6.4 ------ UNKNOWN
266.6744 -11.2237 2.6 20.9 -114.4 1.3493 4.5 ------ UNKNOWN
284.8528 16.4691 2.7 50.4 -142.2 3.8069 4.4 ------ UNKNOWN
Plot creation:
Thu Jan 18 03:04:29 EST 2024