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
299.0325 -64.6741 0.0518 21.7 153.5 0.0090 3.7 TRIG_01244778
------------------------------------------
Foreground time interval of the image:
0.000 0.032 (delta_t = 0.032 [sec])
Background time interval of the image:
-60.848 -2.848 (delta_t = 58.000 [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 0.032000
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 0.032000
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 0.032000
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 0.032 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.82467 ( -0.448757 0.644692 )
Norm@50keV : 5.45493E-03 ( -0.0054543 0.00273178 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.52 using 59 PHA bins.
# Reduced chi-squared = 1.062 for 57 degrees of freedom
# Null hypothesis probability = 3.500037e-01
Photon flux (15-150 keV) in 0.032 sec: 1.32472 ( -0.61964 0.618437 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.94537e-09 ( -8.92493e-10 8.91754e-10 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 0.032 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.134333 ( -0.134182 1.89725 )
Epeak [keV] : 37.0850 ( -19.6477 15.7617 )
Norm@50keV : 0.178952 ( -0.179006 -0.179006 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.25 using 59 PHA bins.
# Reduced chi-squared = 1.004 for 56 degrees of freedom
# Null hypothesis probability = 4.656382e-01
Photon flux (15-150 keV) in 0.032 sec: 1.78716 ( -0.71297 0.71348 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.07702e-09 ( -1.56021e-09 1.34087e-09 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 0.032 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.137408 ( -1.49891 0.699595 )
beta : -9.99999 ( 9.99999 1.55201e-05 )
Epeak [keV] : 37.1277 ( -16.4038 15.7071 )
Norm@50keV : 0.177749 ( -0.177749 280.549 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.25 using 59 PHA bins.
# Reduced chi-squared = 1.023 for 55 degrees of freedom
# Null hypothesis probability = 4.280245e-01
Photon flux (15-150 keV) in 0.032 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 2.86248e-09 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 8.70407 (-2.96792 5.16861)
R^2/D10^2 : 1.55638 (-1.55638 6.40129)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.57 using 59 PHA bins.
# Reduced chi-squared = 0.9925 for 57 degrees of freedom
# Null hypothesis probability = 4.910863e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.213e-10 4.453e-10
25- 50 1.454e-09 9.874e-10
50-150 5.002e-10 4.182e-10
15-150 2.675e-09 1.672e-09
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 37.1470 (-16.8637 17.9379)
Norm : 12.0287 (-5.87251 8.81658)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.609e-10 4.027e-10
25- 50 1.096e-09 5.032e-10
50-150 7.803e-10 5.215e-10
15-150 2.737e-09 1.232e-09
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.49461 (-8.49811 4.45372)
R1^2/D10^2 : 1.69146 (-1.68801 12.202)
kT2 [keV] : 47.3387 (-73.5388 -73.5388)
R2^2/D10^2 : 1.55647E-04 (-4.5119e-05 -4.5119e-05)
------------------------------------------------------------
Reduced chi-squared =
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 0.032 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.82467 ( -0.448757 0.644692 )
Norm@50keV : 5.45493E-03 ( -0.0054543 0.00273178 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.52 using 59 PHA bins.
# Reduced chi-squared = 1.062 for 57 degrees of freedom
# Null hypothesis probability = 3.500037e-01
Photon flux (15-150 keV) in 0.032 sec: 1.32472 ( -0.61964 0.618437 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.94537e-09 ( -8.92493e-10 8.91754e-10 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 0.032 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.134333 ( -0.134182 1.89725 )
Epeak [keV] : 37.0850 ( -19.6477 15.7617 )
Norm@50keV : 0.178952 ( -0.179006 -0.179006 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.25 using 59 PHA bins.
# Reduced chi-squared = 1.004 for 56 degrees of freedom
# Null hypothesis probability = 4.656382e-01
Photon flux (15-150 keV) in 0.032 sec: 1.78716 ( -0.71297 0.71348 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.07702e-09 ( -1.56021e-09 1.34087e-09 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 0.032 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.137408 ( -1.49891 0.699595 )
beta : -9.99999 ( 9.99999 1.55201e-05 )
Epeak [keV] : 37.1277 ( -16.4038 15.7071 )
Norm@50keV : 0.177749 ( -0.177749 280.549 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.25 using 59 PHA bins.
# Reduced chi-squared = 1.023 for 55 degrees of freedom
# Null hypothesis probability = 4.280245e-01
Photon flux (15-150 keV) in 0.032 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 2.86248e-09 ( 0 0 ) ergs/cm2
Single BB
XSPEC: quit
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 8.70407 (-2.96792 5.16861)
R^2/D10^2 : 1.55638 (-1.55638 6.40129)
(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 7.213e-10 4.613e-10
25- 50 1.454e-09 9.195e-10
50-150 5.002e-10 4.157e-10
15-150 2.675e-09 1.661e-09
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 37.1470 (-16.8637 17.9379)
Norm : 12.0287 (-5.87251 8.81658)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.609e-10 3.770e-10
25- 50 1.096e-09 5.427e-10
50-150 7.803e-10 5.190e-10
15-150 2.737e-09 1.233e-09
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.49461 (-8.49811 4.45372)
R1^2/D10^2 : 1.69146 (-1.68801 12.202)
kT2 [keV] : 47.3387 (-73.5388 -73.5388)
R2^2/D10^2 : 1.55647E-04 (-4.5119e-05 -4.5119e-05)
------------------------------------------------------------
Reduced chi-squared =
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: 2.82467 ( -0.448757 0.644692 )
Norm@50keV : 5.45493E-03 ( -0.0054543 0.00273178 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.52 using 59 PHA bins.
# Reduced chi-squared = 1.062 for 57 degrees of freedom
# Null hypothesis probability = 3.500037e-01
Photon flux (15-150 keV) in 0.032 sec: 1.32472 ( -0.61964 0.618437 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.94537e-09 ( -8.92493e-10 8.91754e-10 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.134333 ( -0.134182 1.89725 )
Epeak [keV] : 37.0850 ( -19.6477 15.7617 )
Norm@50keV : 0.178952 ( -0.179006 -0.179006 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.25 using 59 PHA bins.
# Reduced chi-squared = 1.004 for 56 degrees of freedom
# Null hypothesis probability = 4.656382e-01
Photon flux (15-150 keV) in 0.032 sec: 1.78716 ( -0.71297 0.71348 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.07702e-09 ( -1.56021e-09 1.34087e-09 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.137408 ( -1.49891 0.699595 )
beta : -9.99999 ( 9.99999 1.55201e-05 )
Epeak [keV] : 37.1277 ( -16.4038 15.7071 )
Norm@50keV : 0.177749 ( -0.177749 280.549 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.25 using 59 PHA bins.
# Reduced chi-squared = 1.023 for 55 degrees of freedom
# Null hypothesis probability = 4.280245e-01
Photon flux (15-150 keV) in 0.032 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 2.86248e-09 ( 0 0 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 6.54e-10
S(50-100 keV) = 3.69e-10
T90 vs. Hardness ratio plot
T90 = 0.031999945640564 sec.
Hardness ratio (energy fluence ratio) = 0.56422
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.6447
Count Ratio (50-100 keV) / (15-25 keV) = -0.0209677
Mask shadow pattern
IMX = -3.570094172955883E-01, IMY = -1.776148655943693E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.032000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.032000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.032000
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:
-60.848000 -2.848000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.2918 -60.6576 6.9 38.7 -99.5 0.6097 1.7 2.2 Cen X-3
186.7775 -62.7082 2.4 31.0 -95.7 0.8254 4.9 5.0 GX 301-2
244.9818 -15.6319 1.6 44.0 18.2 1.6396 7.3 0.5 Sco X-1
255.8052 -37.7572 9.7 21.5 35.3 0.1460 1.2 10.1 4U 1700-377
256.4541 -36.4490 11.4 22.9 36.4 0.1332 1.0 1.8 GX 349+2
263.2146 -24.7935 39.2 35.1 45.6 -0.0689 -0.3 11.6 GX 1+4
265.0380 -44.4704 0.0 16.4 60.9 0.0322 0.3 12.7 4U 1735-44
270.0845 -25.0997 7.9 36.1 56.2 0.3879 1.5 10.9 GX 5-1
270.4306 -25.6563 13.4 35.6 56.9 -0.2245 -0.9 8.7 GRS 1758-258
275.9249 -30.3681 91.0 32.7 67.8 0.0313 0.1 0.1 H1820-303
262.8045 -33.8748 5.6 26.1 48.0 0.3246 2.0 9.5 GX 354-0
268.6583 -24.3749 3.0 36.5 53.7 0.9598 3.8 ------ UNKNOWN
259.7803 -38.7371 2.5 20.9 44.2 0.5778 4.7 ------ UNKNOWN
239.2428 -31.0805 2.2 29.6 5.0 0.7393 5.3 ------ UNKNOWN
135.1902 -67.6629 2.2 45.3 -122.3 2.6631 5.2 ------ UNKNOWN
136.4581 -67.2709 2.4 45.3 -121.4 2.4126 4.7 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 0.032000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.1913 -60.7001 5.3 38.8 -99.6 0.0128 2.2 5.9 Cen X-3
186.5597 -62.7192 13.8 31.1 -95.8 0.0028 0.8 4.1 GX 301-2
244.9870 -15.4825 6.8 44.1 18.2 0.0077 1.7 9.5 Sco X-1
256.0756 -37.6918 4.3 21.6 35.9 0.0068 2.7 10.1 4U 1700-377
256.6694 -36.4831 7.1 22.8 36.9 -0.0042 -1.6 11.9 GX 349+2
263.2039 -24.7364 3.8 35.2 45.5 0.0133 3.1 10.6 GX 1+4
264.8921 -44.3812 10.0 16.5 60.5 -0.0028 -1.2 7.6 4U 1735-44
270.3291 -25.2109 4.0 36.1 56.6 0.0158 2.9 8.3 GX 5-1
270.3037 -25.5803 3.5 35.7 56.7 0.0186 3.6 9.8 GRS 1758-258
276.0093 -30.3846 6.1 32.7 67.9 -0.0096 -1.9 4.5 H1820-303
262.9886 -34.0054 8.9 26.0 48.4 0.0040 1.3 10.2 GX 354-0
359.3955 -60.3267 1.9 47.5 169.4 0.0384 6.0 ------ UNKNOWN
256.6180 -64.6658 2.2 5.7 -165.6 0.0109 5.2 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
70.352610 302.240700
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
186.3704 -62.8178 5.9 43.2 -59.6 2.3731 1.9 8.4 GX 301-2
256.0921 -37.9686 23.8 36.6 18.1 -0.2391 -0.5 9.0 4U 1700-377
256.4256 -36.2809 11.4 37.9 19.8 0.5461 1.0 8.5 GX 349+2
263.0314 -24.7342 12.1 46.2 34.6 0.6835 1.0 1.4 GX 1+4
264.7475 -44.4446 11.0 27.7 22.5 0.3815 1.0 0.4 4U 1735-44
270.1127 -25.0895 4.0 43.7 43.1 -2.3659 -2.9 9.3 GX 5-1
270.2912 -25.6005 8.8 43.2 43.1 1.0955 1.3 8.6 GRS 1758-258
275.6884 -30.4404 75.7 37.2 47.9 -0.1038 -0.2 13.0 H1820-303
284.9969 -24.9077 45.5 40.8 62.7 0.3739 0.3 2.3 HT1900.1-2455
262.7447 -33.8626 8.8 37.8 29.1 -0.7086 -1.3 12.3 GX 354-0
0.3061 -28.6854 2.2 52.1 159.5 7.1153 5.4 ------ UNKNOWN
325.7314 -39.7149 2.3 29.4 127.2 2.4872 5.1 ------ UNKNOWN
250.2024 -53.7504 2.7 26.4 -6.8 1.4509 4.2 ------ UNKNOWN
224.9216 -36.6024 2.4 50.7 -11.8 3.2069 4.7 ------ UNKNOWN
204.0752 -41.4236 2.5 55.2 -32.2 8.7999 4.7 ------ UNKNOWN
65.5100 -61.1587 2.8 48.0 -129.1 5.9896 4.1 ------ UNKNOWN
Plot creation:
Fri Jul 26 05:08:56 EDT 2024