Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minute to calcaulte
Image
Pre-slew 15.0-350.0 keV image (Event data)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
297.4666 -24.9869 0.0133 19.4217 62.0239 2.0617706 14.536 TRIG_01344586
Foreground time interval of the image:
-24.172 33.389 (delta_t = 57.561 [sec])
Background time interval of the image:
-78.611 -24.172 (delta_t = 54.439 [sec])
Lightcurves
Notes:
- 1) The mask-weighted light curves are using the flight position.
- 2) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
- 3) 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.
- 4) 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.
- 5) 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 2.048000
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 2.048000
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 2.048000
SN=5 or 10 sec. binning (whichever binning is satisfied first)
SN=5 or 10 sec. binning (T < 200 sec)
Quad-rate summed light curves (from T0-300s to T0+1000s)
Spectral Evolution
Spectra
Notes:
- 1) The fitting includes the systematic errors.
- 2) When the burst includes telescope slew time periods, the fitting uses an average response file made from multiple 5-s response files through out the slew time plus single time preiod for the non-slew times, and weighted by the total counts in the corresponding time period using addrmf. An average response file is needed becuase a spectral fit using 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.
Time averaged spectrum fit using the average DRM
Power-law model
Time interval is from -24.172 sec. to 184.636 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.78335 ( -0.158479 0.162449 )
Norm@50keV : 9.23561E-04 ( -9.25906e-05 9.12356e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 48.77 using 59 bins.
Reduced chi-squared = 0.855614
# Null hypothesis probability of 7.73e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 208.8 sec: 0.126459 ( -0.011197 0.011205 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.77673e-06 ( -1.81138e-07 1.83927e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -24.172 sec. to 184.636 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.41655 ( -0.711859 0.322225 )
Epeak [keV] : 70.3298 ( -18.9999 -70.3299 )
Norm@50keV : 1.47695E-03 ( -0.000635024 0.00215994 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 47.76 using 59 bins.
Reduced chi-squared = 0.852857
# Null hypothesis probability of 7.75e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 208.8 sec: 0.124436 ( -0.011724 0.011698 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.7086e-06 ( -2.11155e-07 2.15026e-07 ) ergs/cm2
Band function
Time interval is from -24.172 sec. to 184.636 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : ( )
beta : ( )
Epeak [keV] : ( )
Norm@50keV : ( )
------------------------------------------------------------
Photon flux (15-150 keV) in 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] : 11.3994 (-1.22404 1.40397)
R^2/D10^2 : 3.62345E-02 (-0.0127487 0.0192863)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 75.71 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 4.93e-02 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.067e-07 3.183e-08
25- 50 6.114e-07 7.047e-08
50-150 4.609e-07 9.751e-08
15-150 1.279e-06 1.475e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 99.9992 (-27.7768 54.2515)
Norm : 0.558309 (-0.0678286 0.0775007)
------------------------------------------------------------
#Fit statistic : Chi-Squared 47.82 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 8.02e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.047e-07 4.134e-08
25- 50 5.269e-07 5.126e-08
50-150 8.538e-07 3.393e-07
15-150 1.685e-06 3.639e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.44145 (-1.6703 1.847)
R1^2/D10^2 : 0.208096 (-0.11639 0.28645)
kT2 [keV] : 22.5630 (-6.00694 14.9087)
R2^2/D10^2 : 2.10049E-03 (-0.00173659 0.00508323)
------------------------------------------------------------
#Fit statistic : Chi-Squared 47.65 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 7.49e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.043e-07 1.072e-07
25- 50 5.246e-07 1.742e-07
50-150 8.708e-07 4.583e-07
15-150 1.700e-06 7.001e-07
Peak spectrum fit
Power-law model
Time interval is from 4.240 sec. to 5.240 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.32665 ( -0.301982 0.297518 )
Norm@50keV : 9.58158E-03 ( -0.00154686 0.0015452 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 36.87 using 59 bins.
Reduced chi-squared = 0.646842
# Null hypothesis probability of 9.82e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 1.14892 ( -0.192202 0.19277 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.40936e-08 ( -1.68166e-08 1.69823e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 4.240 sec. to 5.240 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.33166 ( -0.311964 0.291683 )
Epeak [keV] : 9999.20 ( -9999.36 -9999.36 )
Norm@50keV : 9.58518E-03 ( -0.00155042 0.0120792 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 36.88 using 59 bins.
Reduced chi-squared = 0.658571
# Null hypothesis probability of 9.77e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 1.15759 ( -0.24067 0.22401 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.46303e-08 ( -2.05641e-08 1.05005e-08 ) ergs/cm2
Band function
Time interval is from 4.240 sec. to 5.240 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : ( )
beta : ( )
Epeak [keV] : ( )
Norm@50keV : ( )
------------------------------------------------------------
Photon flux (15-150 keV) in 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] : 16.9230 (-3.80847 5.53872)
R^2/D10^2 : 8.60916E-02 (-0.0523607 0.120444)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 50.18 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 7.27e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.028e-09 1.819e-09
25- 50 2.216e-08 5.720e-09
50-150 4.525e-08 1.620e-08
15-150 7.245e-08 1.793e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-69.018 -200)
Norm : 4.75882 (-0.775372 0.775372)
------------------------------------------------------------
#Fit statistic : Chi-Squared 39.35 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.64e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.185e-08 6.750e-09
25- 50 2.280e-08 1.293e-08
50-150 5.000e-08 2.834e-08
15-150 8.464e-08 4.754e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 9.75673 (-4.488 3.78642)
R1^2/D10^2 : 0.441648 (-0.290134 2.80311)
kT2 [keV] : 73.8666 (-56.1297 -81.8255)
R2^2/D10^2 : 9.60119E-04 (-0.000522106 0.0176757)
------------------------------------------------------------
#Fit statistic : Chi-Squared 37.02 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.70e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.902e-09 5.300e-09
25- 50 2.360e-08 1.282e-08
50-150 6.368e-08 3.246e-08
15-150 9.618e-08 4.722e-08
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: 1.66547 ( -0.143552 0.145354 )
Norm@50keV : 2.25324E-03 ( -0.000193381 0.000191589 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 55.15 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 5.45e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 57.56 sec: 0.295722 ( -0.024 0.0240619 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.20441e-06 ( -1.09232e-07 1.10376e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.43679 ( -0.598241 0.352643 )
Epeak [keV] : 114.440 ( -53.9957 -114.442 )
Norm@50keV : 2.98883E-03 ( -0.000905596 0.00317175 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 54.63 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 5.27e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 57.56 sec: 0.292557 ( -0.025125 0.025086 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.17786e-06 ( -1.26361e-07 1.26125e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : ( )
beta : ( )
Epeak [keV] : ( )
Norm@50keV : ( )
------------------------------------------------------------
Photon flux (15-150 keV) in 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) = 4.97e-07
S(50-100 keV) = 5.78e-07
T90 vs. Hardness ratio plot
T90 = 193.751999974251 sec.
Hardness ratio (energy fluence ratio) = 1.16298
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.07314
Count Ratio (50-100 keV) / (15-25 keV) = 0.689292
Mask shadow pattern
IMX = 1.653968193818678E-01, IMY = -3.113796750259140E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000
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:
-78.611400 -24.172000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9886 -15.6698 1.4 47.0 -27.3 2.2248 8.6 1.9 Sco X-1
255.9867 -37.8442 26.8 26.1 -48.6 0.0577 0.4 0.0 4U 1700-377
256.4360 -36.4235 200.6 26.4 -45.3 0.0078 0.1 0.0 GX 349+2
262.9273 -24.6169 6.9 28.9 -17.5 -0.2258 -1.7 8.9 GX 1+4
264.6032 -44.5704 202.4 18.1 -61.7 -0.0072 -0.1 9.4 4U 1735-44
268.3687 -1.2827 74.8 46.3 10.4 0.0341 0.2 10.2 SW J1753.5-0127
270.1974 -25.1763 4.7 24.3 -6.9 0.3170 2.5 7.5 GX 5-1
270.3380 -25.8977 5.2 23.6 -7.7 0.2864 2.2 9.5 GRS 1758-258
273.9526 -14.1856 35.0 32.2 11.0 0.0450 0.3 9.5 GX 17+2
275.9693 -30.5202 5.7 16.9 -4.3 0.2354 2.0 9.5 H1820-303
285.0557 -24.9829 5.3 18.8 27.3 0.2576 2.2 3.9 HT1900.1-2455
263.1183 -33.7209 34.5 22.9 -33.2 0.0385 0.3 9.4 GX 354-0
278.9657 -37.3223 2.2 10.3 -16.6 0.5497 5.1 ------ UNKNOWN
22.6054 -66.4292 2.6 52.0 -169.6 1.4472 4.4 ------ UNKNOWN
49.2136 -71.8816 2.3 57.2 -157.9 2.8369 5.0 ------ UNKNOWN
104.3559 -84.5744 2.8 52.0 -139.8 2.2840 4.1 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-24.172000 33.388600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
245.0797 -15.5024 5.1 47.1 -27.0 0.6540 2.3 10.1 Sco X-1
256.1539 -37.8942 9.6 26.0 -48.5 -0.1848 -1.2 8.5 4U 1700-377
256.4961 -36.2548 7.9 26.4 -44.9 0.2267 1.5 10.5 GX 349+2
262.9425 -24.9441 0.0 28.7 -17.9 -0.3056 -2.0 12.5 GX 1+4
264.7614 -44.5692 7.5 18.0 -61.6 0.2247 1.5 7.2 4U 1735-44
268.3751 -1.3817 8.6 46.2 10.4 0.3693 1.3 4.3 SW J1753.5-0127
270.2840 -25.0780 215.1 24.3 -6.6 0.0078 0.1 0.1 GX 5-1
270.3025 -25.7430 17.3 23.8 -7.6 0.0987 0.7 0.0 GRS 1758-258
274.2070 -14.0924 0.0 32.2 11.5 -0.2262 -1.5 12.2 GX 17+2
276.1167 -30.4392 5.3 16.9 -3.8 -0.2650 -2.2 10.8 H1820-303
285.1150 -24.9469 54.6 18.8 27.4 -0.0301 -0.2 4.6 HT1900.1-2455
263.1426 -33.9355 7.8 22.8 -33.7 0.1959 1.5 9.7 GX 354-0
297.4666 -24.9869 0.8 19.4 62.0 2.0619 14.5 ------ UNKNOWN
52.4931 -72.1457 2.6 57.7 -156.9 2.9596 4.5 ------ UNKNOWN
39.7873 -86.3030 2.3 48.0 -143.8 1.7178 5.0 ------ UNKNOWN
204.9776 -82.3178 2.2 46.4 -128.5 2.7628 5.1 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
105.388590 962.340300
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
256.0342 -37.8850 48.2 37.3 -104.4 0.8367 0.2 3.3 4U 1700-377
256.6047 -36.5665 5.1 36.7 -102.3 7.7116 2.3 11.9 GX 349+2
263.1531 -24.8565 6.4 31.1 -81.1 3.6040 1.8 10.3 GX 1+4
264.7740 -44.5792 17.5 32.9 -118.8 1.3376 0.7 7.9 4U 1735-44
268.4139 -1.5844 6.2 36.5 -38.7 -3.4973 -1.9 8.4 SW J1753.5-0127
270.4163 -25.0869 2.9 24.5 -80.0 6.4385 4.1 7.2 GX 5-1
270.3189 -25.6159 8.8 24.6 -81.3 2.3881 1.5 7.7 GRS 1758-258
274.0199 -13.9829 5.6 24.7 -51.9 2.8446 2.1 3.3 GX 17+2
275.8734 -30.4338 4.3 19.9 -94.7 3.5072 2.7 4.8 H1820-303
284.8913 -25.0348 30.9 11.4 -77.0 0.4220 0.4 10.4 HT1900.1-2455
288.7377 10.8502 5.6 36.8 1.6 -3.2378 -2.1 6.7 GRS 1915+105
262.9247 -33.8948 15.9 31.3 -98.7 1.4337 0.7 4.8 GX 354-0
315.1712 15.9591 3.8 44.4 40.7 6.5330 3.0 ------ UNKNOWN
292.1196 5.0223 2.6 30.4 5.4 6.0951 4.4 ------ UNKNOWN
267.8417 -15.9584 2.3 29.2 -61.7 7.9098 5.0 ------ UNKNOWN
Plot creation:
Sun Mar 1 23:29:05 EST 2026