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
245.4709 -15.7533 0.0089 0.2 -96.5 2.9706 21.6 TRIG_01216910
------------------------------------------
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: 5.63677 ( -0.358598 0.369243 )
Norm@50keV : 1.72900E-04 ( -5.04026e-05 6.51135e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.01 using 59 PHA bins.
# Reduced chi-squared = 1.070 for 57 degrees of freedom
# Null hypothesis probability = 3.339882e-01
Photon flux (15-150 keV) in 64 sec: 0.495469 ( -0.0435714 0.0438418 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.71302e-07 ( -7.90918e-08 7.92826e-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 : 2.71706E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 378.81 using 59 PHA bins.
# Reduced chi-squared = 6.7644 for 56 degrees of freedom
# Null hypothesis probability = 1.827064e-49
Photon flux (15-150 keV) in 64 sec: 0.478406 ( -0.048235 0.047361 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.24742e-07 ( -8.6784e-08 8.55616e-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 : -7.89114 ( 3.55964 7.89114 )
beta : -5.67183 ( -0.343593 0.386917 )
Epeak [keV] : 356.289 ( -356.289 -356.289 )
Norm@50keV : 2.27325E-02 ( -0.00641598 0.00931354 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.03 using 59 PHA bins.
# Reduced chi-squared = 1.110 for 55 degrees of freedom
# Null hypothesis probability = 2.681190e-01
Photon flux (15-150 keV) in 64 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 7.0009e-07 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 2.81697 (-0.199365 0.222478)
R^2/D10^2 : 100.136 (-43.2181 76.0163)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.16 using 59 PHA bins.
# Reduced chi-squared = 1.003 for 57 degrees of freedom
# Null hypothesis probability = 4.691154e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.017e-07 1.442e-07
25- 50 9.329e-08 2.068e-08
50-150 8.861e-11 5.532e-11
15-150 8.950e-07 1.546e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 5.14004 (-0.532915 0.631906)
Norm : 100.380 (-36.3403 57.9497)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.162e-07 1.342e-07
25- 50 1.097e-07 2.230e-08
50-150 6.527e-10 3.961e-10
15-150 9.266e-07 1.344e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 1.49264 (-1.8236 22.7362)
R1^2/D10^2 : 5037.04 (-4873.18 -4873.18)
kT2 [keV] : 3.10332 (-0.345198 -3.10494)
R2^2/D10^2 : 44.1501 (-43.748 89.9353)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.996e-07 4.848e-07
25- 50 1.008e-07 6.371e-08
50-150 9.811e-10 1.044e-09
15-150 9.014e-07 5.286e-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: 5.63677 ( -0.358598 0.369243 )
Norm@50keV : 1.72900E-04 ( -5.04026e-05 6.51135e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.01 using 59 PHA bins.
# Reduced chi-squared = 1.070 for 57 degrees of freedom
# Null hypothesis probability = 3.339882e-01
Photon flux (15-150 keV) in 64 sec: 0.495469 ( -0.0435714 0.0438418 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.71302e-07 ( -7.90918e-08 7.92826e-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 : 2.71706E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 378.81 using 59 PHA bins.
# Reduced chi-squared = 6.7644 for 56 degrees of freedom
# Null hypothesis probability = 1.827064e-49
Photon flux (15-150 keV) in 64 sec: 0.478406 ( -0.048235 0.047361 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.24742e-07 ( -8.6784e-08 8.55616e-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 : -7.89114 ( 3.55964 7.89114 )
beta : -5.67183 ( -0.343593 0.386917 )
Epeak [keV] : 356.289 ( -356.289 -356.289 )
Norm@50keV : 2.27325E-02 ( -0.00641598 0.00931354 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.03 using 59 PHA bins.
# Reduced chi-squared = 1.110 for 55 degrees of freedom
# Null hypothesis probability = 2.681190e-01
Photon flux (15-150 keV) in 64 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 7.0009e-07 ( 0 0 ) ergs/cm2
Single BB
XSPEC: quit
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 2.81697 (-0.199365 0.222478)
R^2/D10^2 : 100.136 (-43.2181 76.0163)
(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 8.017e-07 1.553e-07
25- 50 9.329e-08 2.008e-08
50-150 8.861e-11 5.785e-11
15-150 8.950e-07 1.430e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 5.14004 (-0.532915 0.631906)
Norm : 100.380 (-36.3403 57.9497)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.162e-07 1.177e-07
25- 50 1.097e-07 2.384e-08
50-150 6.527e-10 4.111e-10
15-150 9.266e-07 1.379e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 1.49264 (-1.8236 20.7146)
R1^2/D10^2 : 5037.04 (-4873.18 -4873.18)
kT2 [keV] : 3.10332 (-0.345618 -3.10494)
R2^2/D10^2 : 44.1501 (-43.748 89.9353)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.996e-07 4.810e-07
25- 50 1.008e-07 6.554e-08
50-150 9.811e-10 3.148e-10
15-150 9.014e-07 5.523e-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: 5.63677 ( -0.358598 0.369243 )
Norm@50keV : 1.72900E-04 ( -5.04026e-05 6.51135e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.01 using 59 PHA bins.
# Reduced chi-squared = 1.070 for 57 degrees of freedom
# Null hypothesis probability = 3.339882e-01
Photon flux (15-150 keV) in 64 sec: 0.495469 ( -0.0435714 0.0438418 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.71302e-07 ( -7.90918e-08 7.92826e-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 : 2.71706E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 378.81 using 59 PHA bins.
# Reduced chi-squared = 6.7644 for 56 degrees of freedom
# Null hypothesis probability = 1.827064e-49
Photon flux (15-150 keV) in 64 sec: 0.478406 ( -0.048235 0.047361 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.24742e-07 ( -8.6784e-08 8.55616e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -7.89114 ( 3.55964 7.89114 )
beta : -5.67183 ( -0.343593 0.386917 )
Epeak [keV] : 356.289 ( -356.289 -356.289 )
Norm@50keV : 2.27325E-02 ( -0.00641598 0.00931354 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.03 using 59 PHA bins.
# Reduced chi-squared = 1.110 for 55 degrees of freedom
# Null hypothesis probability = 2.681190e-01
Photon flux (15-150 keV) in 64 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 7.0009e-07 ( 0 0 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 1.39e-07
S(50-100 keV) = 1.12e-08
T90 vs. Hardness ratio plot
T90 = 64 sec.
Hardness ratio (energy fluence ratio) = 0.0805755
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.106255
Count Ratio (50-100 keV) / (15-25 keV) = 0.0097336
Mask shadow pattern
IMX = -4.209548466237861E-04, IMY = 3.685939396281558E-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] [']
245.1072 -15.6075 52.6 0.2 124.6 -0.0296 -0.2 7.6 Sco X-1
254.5730 35.3400 56.4 51.8 -180.0 -0.0770 -0.2 5.6 Her X-1
255.8853 -37.6938 30.2 23.9 -30.8 0.0522 0.4 10.2 4U 1700-377
256.5616 -36.5413 5.9 23.1 -33.3 -0.2673 -1.9 9.3 GX 349+2
262.9915 -24.7339 856.8 18.9 -68.4 -0.0020 -0.0 1.2 GX 1+4
264.8627 -44.4110 10.6 33.1 -35.7 -0.1855 -1.1 5.6 4U 1735-44
268.2949 -1.5831 16.2 26.8 -129.3 0.1170 0.7 9.0 SW J1753.5-0127
270.4431 -25.2138 0.0 25.4 -73.6 0.2888 1.6 11.8 GX 5-1
270.3868 -25.7417 8.1 25.5 -72.4 0.2916 1.6 4.6 GRS 1758-258
273.8514 -14.0456 6.0 27.7 -99.3 -0.3814 -1.9 9.0 GX 17+2
276.0942 -30.4830 0.0 31.8 -66.6 0.5374 2.4 11.2 H1820-303
285.0550 -24.8837 15.0 38.3 -79.3 0.3055 0.8 2.4 HT1900.1-2455
262.9907 -33.8403 9.6 24.1 -47.9 0.1938 1.2 0.3 GX 354-0
244.9419 37.9638 2.2 53.7 170.0 2.4110 5.1 ------ UNKNOWN
249.3209 27.1176 3.0 43.0 175.7 0.9143 3.9 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
77.500610 175.990000
178.000000 196.550000
198.000000 209.330000
211.000000 243.027600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.8361 -15.5580 4.8 0.6 99.1 -0.6426 -2.4 9.6 Sco X-1
254.3550 35.3963 18.5 51.9 179.6 0.5397 0.6 6.0 Her X-1
256.1757 -37.7651 10.8 23.9 -30.8 -0.3043 -1.1 10.1 4U 1700-377
256.5903 -36.5753 0.0 23.0 -32.9 -0.3927 -1.4 11.8 GX 349+2
263.0589 -24.6703 6.0 18.7 -68.4 -0.6216 -1.9 5.3 GX 1+4
264.5965 -44.3161 6.2 32.8 -35.2 -0.7043 -1.9 10.2 4U 1735-44
268.2182 -1.5638 7.0 26.5 -129.7 0.5600 1.6 11.2 SW J1753.5-0127
270.1352 -25.2182 12.2 24.9 -73.3 -0.3479 -0.9 11.6 GX 5-1
270.1407 -25.6650 7.3 25.1 -72.3 0.7034 1.9 9.9 GRS 1758-258
273.8522 -14.0076 15.9 27.5 -99.5 -0.2962 -0.7 9.1 GX 17+2
275.9098 -30.3527 385.9 31.4 -66.6 0.0131 0.0 1.2 H1820-303
285.2036 -24.9862 4.9 38.2 -79.1 1.8135 2.4 9.9 HT1900.1-2455
263.1662 -33.8053 8.7 24.1 -47.9 0.4471 1.3 9.0 GX 354-0
208.3981 -50.0403 3.0 45.5 23.3 2.0024 3.8 ------ UNKNOWN
221.4431 -54.6018 3.5 43.1 10.6 1.6241 3.3 ------ UNKNOWN
235.1431 -34.2578 2.7 20.7 15.2 1.1688 4.2 ------ UNKNOWN
Plot creation:
Fri Feb 23 20:11:19 EST 2024