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
244.7236 -15.7236 0.0038 0.2 111.8 57.0511 51.0 TRIG_01219543
------------------------------------------
Foreground time interval of the image:
-50.216 336.050 (delta_t = 386.266 [sec])
361.000 700.090 (delta_t = 339.090 [sec])
701.000 761.480 (delta_t = 60.480 [sec])
763.000 817.530 (delta_t = 54.530 [sec])
819.000 914.984 (delta_t = 95.984 [sec])
Background time interval of the image:
-239.000 -226.619 (delta_t = 12.381 [sec])
-225.000 -222.360 (delta_t = 2.640 [sec])
-220.000 -215.960 (delta_t = 4.040 [sec])
-214.000 -133.360 (delta_t = 80.640 [sec])
-132.000 -50.216 (delta_t = 81.784 [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
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
Multiple GTIs in the spectrum
tstart tstop
-50.216000 336.050000
361.000000 700.090000
701.000000 761.480000
763.000000 817.530000
819.000000 914.984000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 7.09229 ( )
Norm@50keV : 1.07561E-04 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 184.85 using 59 PHA bins.
# Reduced chi-squared = 3.2430 for 57 degrees of freedom
# Null hypothesis probability = 2.048295e-15
Photon flux (15-150 keV) in 936.3 sec: 1.35326 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 3.64268e-05 ( 0 0 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-50.216000 336.050000
361.000000 700.090000
701.000000 761.480000
763.000000 817.530000
819.000000 914.984000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 1.08425E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 1730.13 using 59 PHA bins.
# Reduced chi-squared = 30.8952 for 56 degrees of freedom
# Null hypothesis probability = 0.000000e+00
Photon flux (15-150 keV) in 936.3 sec: 1.08613 ( -0.111636 0.11056 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.01628e-05 ( -2.80647e-06 2.77323e-06 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
-50.216000 336.050000
361.000000 700.090000
701.000000 761.480000
763.000000 817.530000
819.000000 914.984000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -9.23041 ( )
beta : -7.09429 ( )
Epeak [keV] : 470.308 ( )
Norm@50keV : 1.45939E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 184.85 using 59 PHA bins.
# Reduced chi-squared = 3.3609 for 55 degrees of freedom
# Null hypothesis probability = 6.003058e-16
Photon flux (15-150 keV) in 936.3 sec: 1.59897 ( ) 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] : 2.56659 (-0.0664569 0.0703671)
R^2/D10^2 : 466.685 (-106.559 135.083)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.09 using 59 PHA bins.
# Reduced chi-squared = 1.159 for 57 degrees of freedom
# Null hypothesis probability = 1.917479e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.895e-05 2.299e-06
25- 50 2.364e-06 1.493e-07
50-150 9.631e-10 2.745e-10
15-150 3.132e-05 2.617e-06
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 4.09206 (-0.142478 0.153654)
Norm : 633.946 (-123.22 149.453)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.153e-05 2.280e-06
25- 50 2.440e-06 1.634e-07
50-150 4.142e-09 1.154e-09
15-150 3.397e-05 2.565e-06
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 0.391706 (-2.54776 -2.54776)
R1^2/D10^2 : 5.73464E+13 (-6.78946e+13 3.1198e+18)
kT2 [keV] : 2.57172 (-0.0698074 0.0741257)
R2^2/D10^2 : 457.391 (-108.999 139.948)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.895e-05 1.478e+03
25- 50 2.365e-06 1.207e+04
50-150 9.677e-10 3.171e+05
15-150 3.131e-05 3.527e+05
Peak spectrum fit
Power-law model
Time interval is from 400.464 sec. to 401.464 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 4.80044 ( -0.510595 0.5677 )
Norm@50keV : 1.36526E-03 ( -0.000594866 0.00083029 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 44.87 using 59 PHA bins.
# Reduced chi-squared = 0.7872 for 57 degrees of freedom
# Null hypothesis probability = 8.778853e-01
Photon flux (15-150 keV) in 1 sec: 1.74362 ( -0.224278 0.224279 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.67792e-08 ( -7.73427e-09 7.84649e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from 400.464 sec. to 401.464 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 1.58077E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 156.64 using 59 PHA bins.
# Reduced chi-squared = 2.7971 for 56 degrees of freedom
# Null hypothesis probability = 1.835138e-11
Photon flux (15-150 keV) in 1 sec: 1.72208 ( -0.225 0.22441 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.39326e-08 ( -7.1539e-09 7.8404e-09 ) ergs/cm2
Band function
Time interval is from 400.464 sec. to 401.464 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.02776 ( 1.02776 1.02776 )
beta : -5.81140 ( 5.85771 1.36352 )
Epeak [keV] : 5.43914 ( -5.43919 3.1791 )
Norm@50keV : 1.69874 ( -1.05267 99699 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 43.14 using 59 PHA bins.
# Reduced chi-squared = 0.7844 for 55 degrees of freedom
# Null hypothesis probability = 8.767277e-01
Photon flux (15-150 keV) in 1 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] : 3.11840 (-0.359068 0.411074)
R^2/D10^2 : 190.745 (-103.966 240.2)
(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 4.517e-08 1.484e-08
25- 50 7.521e-09 2.846e-09
50-150 1.649e-11 1.327e-11
15-150 5.271e-08 1.589e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 6.35303 (-1.13693 1.49338)
Norm : 182.848 (-83.3311 164.848)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.466e-08 1.269e-08
25- 50 9.280e-09 3.550e-09
50-150 1.416e-10 1.187e-10
15-150 5.408e-08 1.242e-08
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.01113 (-3.06493 0.451713)
R1^2/D10^2 : 232.234 (-142.026 -231.657)
kT2 [keV] : 12.5851 (-12.7334 -12.7334)
R2^2/D10^2 : 2.11446E-02 (-0.0203003 377.439)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.516e-08 1.620e-08
25- 50 8.266e-09 3.422e-09
50-150 4.479e-09 5.459e-09
15-150 5.791e-08 2.135e-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: 7.09229 ( )
Norm@50keV : 1.07561E-04 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 184.85 using 59 PHA bins.
# Reduced chi-squared = 3.2430 for 57 degrees of freedom
# Null hypothesis probability = 2.048295e-15
Photon flux (15-150 keV) in 936.3 sec: 1.35326 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 3.64268e-05 ( 0 0 ) 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 : 1.08425E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 1730.13 using 59 PHA bins.
# Reduced chi-squared = 30.8952 for 56 degrees of freedom
# Null hypothesis probability = 0.000000e+00
Photon flux (15-150 keV) in 936.3 sec: 1.08613 ( -0.111636 0.11056 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.01628e-05 ( -2.80647e-06 2.77323e-06 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -9.23041 ( )
beta : -7.09429 ( )
Epeak [keV] : 470.308 ( )
Norm@50keV : 1.45939E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 184.85 using 59 PHA bins.
# Reduced chi-squared = 3.3609 for 55 degrees of freedom
# Null hypothesis probability = 6.003058e-16
Photon flux (15-150 keV) in 936.3 sec: 1.59897 ( ) 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) = 2.62e-06
S(50-100 keV) = 7.69e-08
T90 vs. Hardness ratio plot
T90 = 790.283999919891 sec.
Hardness ratio (energy fluence ratio) = 0.0293511
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.0747978
Count Ratio (50-100 keV) / (15-25 keV) = -0.00464929
Mask shadow pattern
IMX = -1.163844934878000E-03, IMY = -2.907631542668104E-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:
-239.000000 -226.618600
-225.000000 -222.360000
-220.000000 -215.960000
-214.000000 -133.360000
-132.000000 -50.216000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9306 -15.7679 0.4 0.1 -144.3 12.8666 32.4 8.2 Sco X-1
254.4997 35.3969 5.3 52.0 -178.1 2.5825 2.2 3.9 Her X-1
255.8737 -37.6961 4.9 23.9 -29.8 1.0396 2.4 10.4 4U 1700-377
256.6067 -36.4724 5.5 23.1 -32.6 -0.8662 -2.1 8.8 GX 349+2
263.0725 -24.6032 8.5 19.2 -67.8 0.6558 1.3 9.2 GX 1+4
264.7680 -44.4311 8.1 33.2 -34.4 0.7346 1.4 1.6 4U 1735-44
268.3723 -1.5715 6.9 27.2 -127.3 0.8253 1.7 7.1 SW J1753.5-0127
270.2334 -25.0467 4.9 25.4 -72.6 1.1985 2.4 3.4 GX 5-1
270.4684 -25.6483 5.7 25.8 -71.4 -1.0372 -2.0 10.6 GRS 1758-258
274.1503 -13.9130 4.8 28.3 -98.0 1.4034 2.4 11.2 GX 17+2
276.0973 -30.4781 0.0 32.1 -65.3 -0.9314 -1.4 11.1 H1820-303
285.1374 -24.9889 7.5 38.7 -77.6 -1.8106 -1.5 6.9 HT1900.1-2455
263.0379 -33.7219 5.1 24.3 -47.1 1.0941 2.2 7.2 GX 354-0
222.4301 -55.3816 3.6 43.2 10.5 2.2367 3.2 ------ UNKNOWN
254.1218 -64.9020 2.2 49.5 -13.2 3.9575 5.2 ------ UNKNOWN
280.8896 19.9885 2.3 50.3 -142.2 6.1120 4.9 ------ UNKNOWN
289.2482 -61.1446 1.9 55.2 -32.3 13.1184 5.9 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-50.216000 336.050000
361.000000 700.090000
701.000000 761.480000
763.000000 817.530000
819.000000 914.984000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.8085 -15.7333 0.3 0.1 129.1 49.9059 44.6 11.3 Sco X-1
254.5068 35.2375 7.1 51.9 -178.0 -5.3506 -1.6 6.7 Her X-1
256.1505 -37.9697 5.6 24.3 -30.0 2.6919 2.0 10.8 4U 1700-377
256.4533 -36.5699 3.8 23.2 -32.2 -3.9958 -3.0 8.9 GX 349+2
262.8912 -24.7215 5.5 19.1 -67.3 -2.7227 -2.1 6.6 GX 1+4
264.6798 -44.4605 3.6 33.2 -34.2 -5.0137 -3.3 2.8 4U 1735-44
268.3625 -1.5203 3.4 27.2 -127.4 4.9774 3.4 4.1 SW J1753.5-0127
270.1705 -24.9471 74.8 25.3 -72.8 -0.2493 -0.2 10.1 GX 5-1
270.3547 -25.6036 473.6 25.7 -71.5 0.0395 0.0 8.8 GRS 1758-258
273.9919 -13.9322 11.3 28.2 -98.0 1.9479 1.0 6.3 GX 17+2
275.9001 -30.5031 4.9 31.9 -65.1 -4.7537 -2.3 8.3 H1820-303
285.2069 -25.0071 10.1 38.7 -77.6 4.2408 1.1 10.7 HT1900.1-2455
262.8550 -33.7015 310.2 24.1 -46.9 0.0494 0.0 10.4 GX 354-0
213.6913 4.6548 2.3 37.0 113.0 14.0384 5.1 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
Plot creation:
Tue Mar 12 06:36:34 EDT 2024