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
245.5634 -15.7259 0.0112 0.2 -85.9 2.3462 17.2 TRIG_01216745
------------------------------------------
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
8 ms binning
From T100_start-3 s to T100_start+3 s
2 ms binning
From T100_start-1 s to T100_start+1 s
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: 5.56034 ( -0.446414 0.466444 )
Norm@50keV : 1.35330E-04 ( -4.88796e-05 6.77835e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.94 using 59 PHA bins.
# Reduced chi-squared = 1.017 for 57 degrees of freedom
# Null hypothesis probability = 4.402688e-01
Photon flux (15-150 keV) in 64 sec: 0.359636 ( -0.035285 0.0354294 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.08256e-07 ( -6.57107e-08 6.5737e-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: 1.80921 ( )
Epeak [keV] : 1.08037 ( )
Norm@50keV : 0.153899 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.08 using 59 PHA bins.
# Reduced chi-squared = 1.037 for 56 degrees of freedom
# Null hypothesis probability = 3.986231e-01
Photon flux (15-150 keV) in 64 sec: 0.354799 ( -0.037028 0.036627 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.90982e-07 ( -7.02246e-08 7.18016e-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 : -1.25514 ( 1.26368 1.26368 )
beta : -5.79121 ( 5.68698 0.530976 )
Epeak [keV] : 3.26719 ( -3.26729 2.23327 )
Norm@50keV : 0.696252 ( -0.696488 4.42829e+07 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.43 using 59 PHA bins.
# Reduced chi-squared = 1.044 for 55 degrees of freedom
# Null hypothesis probability = 3.851997e-01
Photon flux (15-150 keV) in 64 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] : 2.75837 (-0.246903 0.284905)
R^2/D10^2 : 84.5531 (-43.2874 88.5803)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.86 using 59 PHA bins.
# Reduced chi-squared = 1.085 for 57 degrees of freedom
# Null hypothesis probability = 3.069090e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.890e-07 1.300e-07
25- 50 6.342e-08 1.822e-08
50-150 5.011e-11 3.516e-11
15-150 6.525e-07 1.422e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 5.12772 (-0.6795 0.848855)
Norm : 73.4938 (-31.8415 58.0837)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.927e-07 1.224e-07
25- 50 7.926e-08 2.156e-08
50-150 4.659e-10 3.352e-10
15-150 6.724e-07 1.331e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.75093 (-0.26012 0.268728)
R1^2/D10^2 : 86.1252 (-41.7486 93.8822)
kT2 [keV] : 200.000 (-200 -200)
R2^2/D10^2 : 3.04253E-06 (-3.0417e-06 -3.0417e-06)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.879e-07 1.352e-07
25- 50 6.469e-08 1.857e-08
50-150 3.057e-08 3.884e-11
15-150 6.832e-07 1.540e-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: 5.56034 ( -0.446414 0.466444 )
Norm@50keV : 1.35330E-04 ( -4.88796e-05 6.77835e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.94 using 59 PHA bins.
# Reduced chi-squared = 1.017 for 57 degrees of freedom
# Null hypothesis probability = 4.402688e-01
Photon flux (15-150 keV) in 64 sec: 0.359636 ( -0.035285 0.0354294 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.08256e-07 ( -6.57107e-08 6.5737e-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: 1.80921 ( )
Epeak [keV] : 1.08037 ( )
Norm@50keV : 0.153899 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.08 using 59 PHA bins.
# Reduced chi-squared = 1.037 for 56 degrees of freedom
# Null hypothesis probability = 3.986231e-01
Photon flux (15-150 keV) in 64 sec: 0.354799 ( -0.037028 0.036627 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.90982e-07 ( -7.02246e-08 7.18016e-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 : -1.25514 ( 1.26368 1.26368 )
beta : -5.79121 ( 5.68698 0.530976 )
Epeak [keV] : 3.26719 ( -3.26729 2.23373 )
Norm@50keV : 0.696252 ( -0.696488 4.42829e+07 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.43 using 59 PHA bins.
# Reduced chi-squared = 1.044 for 55 degrees of freedom
# Null hypothesis probability = 3.851997e-01
Photon flux (15-150 keV) in 64 sec: ( ) 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] : 2.75837 (-0.246903 0.284905)
R^2/D10^2 : 84.5531 (-43.2874 88.5803)
(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 5.890e-07 1.273e-07
25- 50 6.342e-08 1.705e-08
50-150 5.011e-11 3.680e-11
15-150 6.525e-07 1.430e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 5.12772 (-0.6795 0.848855)
Norm : 73.4938 (-31.8415 58.0837)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.927e-07 1.125e-07
25- 50 7.926e-08 2.287e-08
50-150 4.659e-10 3.351e-10
15-150 6.724e-07 1.191e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.75093 (-0.26012 0.268728)
R1^2/D10^2 : 86.1252 (-41.7486 93.8822)
kT2 [keV] : 200.000 (-200 -200)
R2^2/D10^2 : 3.04253E-06 (-3.0417e-06 -3.0417e-06)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.879e-07 1.252e-07
25- 50 6.469e-08 1.761e-08
50-150 3.057e-08 3.746e-11
15-150 6.832e-07 1.756e-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: 5.56034 ( -0.446414 0.466444 )
Norm@50keV : 1.35330E-04 ( -4.88796e-05 6.77835e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.94 using 59 PHA bins.
# Reduced chi-squared = 1.017 for 57 degrees of freedom
# Null hypothesis probability = 4.402688e-01
Photon flux (15-150 keV) in 64 sec: 0.359636 ( -0.035285 0.0354294 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.08256e-07 ( -6.57107e-08 6.5737e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.80921 ( )
Epeak [keV] : 1.08037 ( )
Norm@50keV : 0.153899 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.08 using 59 PHA bins.
# Reduced chi-squared = 1.037 for 56 degrees of freedom
# Null hypothesis probability = 3.986231e-01
Photon flux (15-150 keV) in 64 sec: 0.354799 ( -0.037028 0.036627 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.90982e-07 ( -7.02246e-08 7.18016e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.25514 ( 1.26368 1.26368 )
beta : -5.79121 ( 5.68698 0.530976 )
Epeak [keV] : 3.26719 ( -3.26729 2.23559 )
Norm@50keV : 0.696252 ( -0.696488 4.42829e+07 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.43 using 59 PHA bins.
# Reduced chi-squared = 1.044 for 55 degrees of freedom
# Null hypothesis probability = 3.851997e-01
Photon flux (15-150 keV) in 64 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) = 1.05e-07
S(50-100 keV) = 8.92e-09
T90 vs. Hardness ratio plot
T90 = 64 sec.
Hardness ratio (energy fluence ratio) = 0.0849524
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.130502
Count Ratio (50-100 keV) / (15-25 keV) = 0.00943261
Mask shadow pattern
IMX = 2.897013244797323E-04, IMY = 4.023387086317072E-03
TIME vs. PHA plot around the trigger time
TIME vs. DetID plot around the trigger time
100 us light curve (15-350 keV)
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] [']
244.8527 -15.4668 0.0 0.5 104.1 -0.0899 -0.7 12.7 Sco X-1
254.4604 35.3257 48.8 51.7 179.7 -0.0894 -0.2 1.0 Her X-1
256.1052 -37.7784 5.5 24.1 -31.0 0.2824 2.1 6.9 4U 1700-377
256.5898 -36.5753 0.0 23.2 -33.2 -0.1246 -0.9 11.8 GX 349+2
263.0847 -24.6652 4.2 18.9 -68.5 -0.4041 -2.7 6.3 GX 1+4
264.8120 -44.3834 4.7 33.1 -35.6 -0.4241 -2.4 5.0 4U 1735-44
268.5183 -1.3351 0.0 27.0 -129.6 -0.3097 -1.9 11.4 SW J1753.5-0127
270.2053 -25.0181 3.8 25.1 -73.8 -0.5193 -3.0 5.6 GX 5-1
270.4739 -25.6074 5.8 25.5 -72.7 0.3517 2.0 12.3 GRS 1758-258
273.8517 -14.0301 5.6 27.6 -99.4 -0.3992 -2.1 9.0 GX 17+2
275.7534 -30.4813 6.4 31.5 -66.4 -0.4007 -1.8 11.2 H1820-303
285.0400 -24.9538 5.3 38.2 -79.1 -0.8540 -2.2 2.0 HT1900.1-2455
263.1578 -33.8903 13.0 24.3 -47.9 -0.1361 -0.9 9.0 GX 354-0
213.4297 -23.0988 2.3 30.9 61.3 1.0377 4.9 ------ UNKNOWN
275.0080 -29.7034 2.7 30.6 -67.3 0.8875 4.2 ------ UNKNOWN
279.3615 3.8884 2.6 38.9 -127.1 1.1592 4.5 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
77.000600 111.270000
112.000000 191.440000
194.000000 200.490000
204.000000 210.590000
213.000000 303.080000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
245.0875 -15.5061 10.5 0.5 107.2 -0.3914 -1.1 10.2 Sco X-1
254.4344 35.2189 4.5 51.6 179.6 -2.5626 -2.6 7.5 Her X-1
255.7965 -37.9801 12.4 24.0 -29.9 0.3365 0.9 12.1 4U 1700-377
256.2716 -36.3337 7.7 22.7 -32.5 0.5450 1.5 9.6 GX 349+2
262.8535 -24.6453 9.6 18.5 -68.1 0.4999 1.2 10.4 GX 1+4
264.9101 -44.4552 109.3 33.1 -35.4 -0.0451 -0.1 7.2 4U 1735-44
268.2278 -1.5723 9.4 26.5 -129.8 0.5063 1.2 11.1 SW J1753.5-0127
270.4185 -25.2147 14.1 25.1 -73.5 -0.3819 -0.8 10.9 GX 5-1
270.4710 -25.6711 15.3 25.3 -72.5 0.4230 0.9 10.1 GRS 1758-258
273.9156 -13.9720 7.2 27.5 -99.6 -0.7569 -1.6 6.5 GX 17+2
275.9170 -30.4450 4.3 31.4 -66.4 -1.4615 -2.7 4.7 H1820-303
285.0989 -24.7928 7.2 38.1 -79.4 1.5417 1.6 8.4 HT1900.1-2455
262.8713 -33.6921 8.7 23.8 -47.6 -0.5456 -1.3 10.4 GX 354-0
222.3354 28.6209 2.5 49.7 143.3 6.7656 4.7 ------ UNKNOWN
245.6019 -15.7221 0.6 0.1 -109.9 6.6861 18.6 ------ UNKNOWN
266.6668 34.0372 2.0 53.7 -167.9 5.8212 5.8 ------ UNKNOWN
262.6359 -72.3590 3.2 57.5 -15.8 5.3662 3.7 ------ UNKNOWN
282.5248 19.1582 3.0 50.4 -142.2 4.6381 3.8 ------ UNKNOWN
289.5264 -43.8422 2.2 46.6 -53.3 7.8604 5.4 ------ UNKNOWN
Plot creation:
Thu Feb 22 18:25:35 EST 2024