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
245.4446 -15.6617 0.0200 42.1 175.5 2.2021 9.6 TRIG_01211211
------------------------------------------
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: 5.48519 ( -0.57445 0.625103 )
Norm@50keV : 1.86067E-04 ( -8.72501e-05 0.000134296 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.46 using 59 PHA bins.
# Reduced chi-squared = 0.8327 for 57 degrees of freedom
# Null hypothesis probability = 8.119370e-01
Photon flux (15-150 keV) in 64 sec: 0.459259 ( -0.0551849 0.0552075 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.08691e-07 ( -1.10532e-07 1.10982e-07 ) 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 : 3.47671E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 188.50 using 59 PHA bins.
# Reduced chi-squared = 3.3660 for 56 degrees of freedom
# Null hypothesis probability = 3.025184e-16
Photon flux (15-150 keV) in 64 sec: 0.455087 ( -0.055966 0.055563 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.90074e-07 ( -1.1751e-07 1.16973e-07 ) 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 : -8.63013 ( 9.06011 8.63013 )
beta : -5.55848 ( -0.569924 0.638559 )
Epeak [keV] : 343.759 ( -343.759 -343.759 )
Norm@50keV : 2.34898E-02 ( -0.0106574 0.0195831 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.51 using 59 PHA bins.
# Reduced chi-squared = 0.8637 for 55 degrees of freedom
# Null hypothesis probability = 7.534732e-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] : 2.70465 (-0.30342 0.354039)
R^2/D10^2 : 127.097 (-73.7982 182.776)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.65 using 59 PHA bins.
# Reduced chi-squared = 0.8535 for 57 degrees of freedom
# Null hypothesis probability = 7.765857e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.756e-07 2.615e-07
25- 50 7.756e-08 3.102e-08
50-150 5.139e-11 4.890e-11
15-150 8.532e-07 3.560e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 5.06556 (-0.845878 1.10489)
Norm : 99.7146 (-50.0042 107.646)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.711e-07 2.228e-07
25- 50 1.003e-07 4.098e-08
50-150 5.553e-10 4.723e-10
15-150 8.719e-07 2.585e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.14835 (-3.81535 42.2208)
R1^2/D10^2 : 3.68572 (-3.52779 207.688)
kT2 [keV] : 2.09048 (-2.1028 19.7426)
R2^2/D10^2 : 598.930 (-573.328 -573.328)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.703e-07 3.443e-07
25- 50 1.148e-07 5.181e-08
50-150 9.005e-10 4.784e-10
15-150 8.860e-07 4.102e-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: 5.48519 ( -0.57445 0.625103 )
Norm@50keV : 1.86067E-04 ( -8.72501e-05 0.000134296 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.46 using 59 PHA bins.
# Reduced chi-squared = 0.8327 for 57 degrees of freedom
# Null hypothesis probability = 8.119370e-01
Photon flux (15-150 keV) in 64 sec: 0.459259 ( -0.0551849 0.0552075 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.08691e-07 ( -1.10532e-07 1.10982e-07 ) 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 : 3.47671E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 188.50 using 59 PHA bins.
# Reduced chi-squared = 3.3660 for 56 degrees of freedom
# Null hypothesis probability = 3.025184e-16
Photon flux (15-150 keV) in 64 sec: 0.455087 ( -0.055966 0.055563 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.90074e-07 ( -1.1751e-07 1.16973e-07 ) 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 : -8.63013 ( 9.06011 8.63013 )
beta : -5.55848 ( -0.569924 0.638559 )
Epeak [keV] : 343.759 ( -343.759 -343.759 )
Norm@50keV : 2.34898E-02 ( -0.0106574 0.0195831 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.51 using 59 PHA bins.
# Reduced chi-squared = 0.8637 for 55 degrees of freedom
# Null hypothesis probability = 7.534732e-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] : 2.70465 (-0.30342 0.354039)
R^2/D10^2 : 127.097 (-73.7982 182.776)
(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 7.756e-07 2.779e-07
25- 50 7.756e-08 2.954e-08
50-150 5.139e-11 4.637e-11
15-150 8.532e-07 2.649e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 5.06556 (-0.845878 1.10489)
Norm : 99.7146 (-50.0042 107.646)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.711e-07 2.160e-07
25- 50 1.003e-07 3.528e-08
50-150 5.553e-10 4.682e-10
15-150 8.719e-07 2.360e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.14835 (-3.81535 42.2208)
R1^2/D10^2 : 3.68572 (-3.52779 207.688)
kT2 [keV] : 2.09048 (-2.1028 19.4196)
R2^2/D10^2 : 598.930 (-573.328 -573.328)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.703e-07 3.837e-07
25- 50 1.148e-07 6.157e-08
50-150 9.005e-10 4.019e-10
15-150 8.860e-07 4.077e-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: 5.48519 ( -0.57445 0.625103 )
Norm@50keV : 1.86067E-04 ( -8.72501e-05 0.000134296 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.46 using 59 PHA bins.
# Reduced chi-squared = 0.8327 for 57 degrees of freedom
# Null hypothesis probability = 8.119370e-01
Photon flux (15-150 keV) in 64 sec: 0.459259 ( -0.0551849 0.0552075 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.08691e-07 ( -1.10532e-07 1.10982e-07 ) 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 : 3.47671E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 188.50 using 59 PHA bins.
# Reduced chi-squared = 3.3660 for 56 degrees of freedom
# Null hypothesis probability = 3.025184e-16
Photon flux (15-150 keV) in 64 sec: 0.455087 ( -0.055966 0.055563 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.90074e-07 ( -1.1751e-07 1.16973e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -8.63013 ( 9.06011 8.63013 )
beta : -5.55848 ( -0.569924 0.638559 )
Epeak [keV] : 343.759 ( -343.759 -343.759 )
Norm@50keV : 2.34898E-02 ( -0.0106574 0.0195831 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.51 using 59 PHA bins.
# Reduced chi-squared = 0.8637 for 55 degrees of freedom
# Null hypothesis probability = 7.534732e-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) = 1.40e-07
S(50-100 keV) = 1.25e-08
T90 vs. Hardness ratio plot
T90 = 64 sec.
Hardness ratio (energy fluence ratio) = 0.0892857
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.155038
Count Ratio (50-100 keV) / (15-25 keV) = -0.00408071
Mask shadow pattern
IMX = -8.994813932730991E-01, IMY = -7.055577583875750E-02
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] [']
186.7112 -62.7919 10.6 38.9 70.4 0.6089 1.1 2.0 GX 301-2
245.0478 -15.5026 5.7 42.3 175.0 -0.4764 -2.0 9.2 Sco X-1
256.1727 -37.9541 11.0 18.0 -179.3 0.1354 1.0 11.0 4U 1700-377
256.6417 -36.4720 7.2 19.3 -176.9 0.2156 1.6 10.4 GX 349+2
263.1222 -24.6546 6.8 30.2 -159.2 -0.2702 -1.7 8.2 GX 1+4
264.9854 -44.4719 14.9 10.3 -156.7 0.0985 0.8 10.5 4U 1735-44
268.3780 -1.5191 4.8 53.3 -151.4 -1.0390 -2.4 4.0 SW J1753.5-0127
270.4998 -25.1448 191.7 29.9 -145.8 0.0099 0.1 12.4 GX 5-1
270.3297 -25.5730 13.0 29.4 -146.0 0.1513 0.9 10.3 GRS 1758-258
274.1275 -13.9796 10.5 41.4 -142.2 0.2462 1.1 7.9 GX 17+2
275.8646 -30.2330 6.1 25.7 -133.9 -0.2838 -1.9 8.6 H1820-303
285.2699 -24.9395 0.0 33.3 -120.9 -0.2142 -1.2 12.8 HT1900.1-2455
262.9001 -33.8106 3.8 21.0 -160.9 -0.3851 -3.0 4.7 GX 354-0
203.2605 -61.4760 3.4 32.2 77.3 0.9816 3.4 ------ UNKNOWN
245.4447 -15.6617 1.3 42.1 175.5 2.1123 9.2 ------ UNKNOWN
296.6898 -19.9078 2.5 42.1 -108.4 2.6495 4.7 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
165.300590 218.174800
219.000000 243.070000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.8622 -15.4607 0.0 0.6 97.2 -0.2102 -1.3 12.7 Sco X-1
254.5510 35.2711 7.7 51.7 176.8 0.6304 1.5 6.3 Her X-1
255.7773 -37.9636 8.7 24.1 -32.9 -0.2268 -1.3 12.2 4U 1700-377
256.2423 -36.5546 4.5 23.0 -35.3 -0.4304 -2.5 12.2 GX 349+2
263.0411 -24.6543 10.7 18.8 -71.3 -0.1992 -1.1 5.7 GX 1+4
264.7150 -44.5728 3.3 33.2 -38.1 0.7422 3.5 7.5 4U 1735-44
268.5045 -1.5219 6.3 26.8 -132.3 0.3375 1.8 9.2 SW J1753.5-0127
270.1330 -24.9360 0.0 24.9 -76.8 -0.4313 -2.1 11.9 GX 5-1
270.1516 -25.6034 5.4 25.1 -75.3 -0.4467 -2.1 11.7 GRS 1758-258
274.1636 -13.9854 8.9 27.8 -102.3 -0.2731 -1.3 9.7 GX 17+2
275.7940 -30.2413 4.5 31.4 -69.7 -0.6407 -2.5 10.1 H1820-303
285.0364 -24.8016 5.6 38.1 -82.3 0.9776 2.0 7.1 HT1900.1-2455
262.8931 -33.8685 6.9 24.0 -50.3 -0.3090 -1.7 5.2 GX 354-0
229.2867 33.3480 2.6 51.4 150.0 2.8512 4.3 ------ UNKNOWN
258.2926 40.0153 2.2 57.0 179.0 3.6753 5.2 ------ UNKNOWN
Plot creation:
Sat Jan 27 18:41:11 EST 2024