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
264.5926 -27.0129 0.0142 5.1 -163.1 6.3197 13.5 TRIG_01114148
------------------------------------------
Foreground time interval of the image:
84.832 167.830 (delta_t = 82.998 [sec])
170.000 221.880 (delta_t = 51.880 [sec])
241.000 252.720 (delta_t = 11.720 [sec])
254.000 485.920 (delta_t = 231.920 [sec])
Background time interval of the image:
-19.899 -12.270 (delta_t = 7.629 [sec])
-11.000 84.832 (delta_t = 95.832 [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 600.000000
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 600.000000
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 600.000000
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
Multiple GTIs in the spectrum
tstart tstop
84.832000 167.830000
170.000000 221.880000
241.000000 252.720000
254.000000 485.920000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 5.82875 ( -0.371874 0.382385 )
Norm@50keV : 5.02866E-05 ( -1.54747e-05 2.0375e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 73.39 using 59 PHA bins.
# Reduced chi-squared = 1.287 for 57 degrees of freedom
# Null hypothesis probability = 7.085638e-02
Photon flux (15-150 keV) in 378.5 sec: 0.174358 ( -0.0159626 0.0160164 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.99975e-06 ( -1.73137e-07 1.73333e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
84.832000 167.830000
170.000000 221.880000
241.000000 252.720000
254.000000 485.920000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 8.96254E-04 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 361.18 using 59 PHA bins.
# Reduced chi-squared = 6.4497 for 56 degrees of freedom
# Null hypothesis probability = 3.416394e-46
Photon flux (15-150 keV) in 378.5 sec: 0.169940 ( -0.0177 0.01741 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.91761e-06 ( -1.85219e-07 1.82766e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
84.832000 167.830000
170.000000 221.880000
241.000000 252.720000
254.000000 485.920000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.663569 ( -2.27175 2.37915 )
beta : -10.0000 ( 10 10 )
Epeak [keV] : 8.62897 ( -1.25055 3.84834 )
Norm@50keV : 10.5461 ( -10.5461 19834.3 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.57 using 59 PHA bins.
# Reduced chi-squared = 1.138 for 55 degrees of freedom
# Null hypothesis probability = 2.254271e-01
Photon flux (15-150 keV) in 378.5 sec: 0.114892 ( 6.88511 -0.011393 ) 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] : 2.68021 (-0.187871 0.210496)
R^2/D10^2 : 51.2615 (-22.5363 39.7777)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.55 using 59 PHA bins.
# Reduced chi-squared = 1.097 for 57 degrees of freedom
# Null hypothesis probability = 2.858472e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.739e-06 3.030e-07
25- 50 1.680e-07 3.777e-08
50-150 1.025e-10 7.232e-11
15-150 1.907e-06 3.448e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 4.78657 (-0.487368 0.576958)
Norm : 46.8096 (-17.4234 28.0559)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.749e-06 2.824e-07
25- 50 2.000e-07 4.413e-08
50-150 8.280e-10 5.481e-10
15-150 1.950e-06 2.623e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.09825 ( )
R1^2/D10^2 : 2.62386 ( )
kT2 [keV] : 3.17725 ( )
R2^2/D10^2 : 1.87764E-03 ( )
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.015e-06 7.135e-07
25- 50 3.924e-07 2.667e-07
50-150 5.513e-09 4.915e-09
15-150 1.413e-06 1.028e-06
Peak spectrum fit
Power-law model
Time interval is from 325.540 sec. to 326.540 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 3.21015 ( -0.721148 0.969307 )
Norm@50keV : 1.63286E-03 ( -0.00100684 0.00126372 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.89 using 59 PHA bins.
# Reduced chi-squared = 0.9980 for 57 degrees of freedom
# Null hypothesis probability = 4.792391e-01
Photon flux (15-150 keV) in 1 sec: 0.525355 ( -0.138614 0.13916 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.17694e-08 ( -7.21783e-09 8.36857e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from 325.540 sec. to 326.540 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 9.23179E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 70.30 using 59 PHA bins.
# Reduced chi-squared = 1.255 for 56 degrees of freedom
# Null hypothesis probability = 9.463371e-02
Photon flux (15-150 keV) in 1 sec: 0.524846 ( -0.142027 0.137915 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.15845e-08 ( -8.1689e-09 8.2848e-09 ) ergs/cm2
Band function
Time interval is from 325.540 sec. to 326.540 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.70005 ( 1.65714 1.65714 )
beta : -3.53198 ( 3.90231 1.38682 )
Epeak [keV] : 5.76101 ( -5.73 11.3265 )
Norm@50keV : 1.87793E-02 ( -0.0115665 374007 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.82 using 59 PHA bins.
# Reduced chi-squared = 1.033 for 55 degrees of freedom
# Null hypothesis probability = 4.071695e-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] : 4.84392 (-1.15874 1.37481)
R^2/D10^2 : 5.16199 (-5.16199 14.8815)
(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 1.104e-08 6.415e-09
25- 50 6.661e-09 4.177e-09
50-150 2.318e-10 2.227e-10
15-150 1.793e-08 1.045e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 13.6524 (-5.57293 11.4507)
Norm : 10.6800 (-2.75941 2.75941)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.105e-08 1.210e-08
25- 50 6.845e-09 1.224e-08
50-150 9.906e-10 4.879e-09
15-150 1.888e-08 2.912e-08
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.61673 (-1.16623 1.32756)
R1^2/D10^2 : 6.31480 (-6.12152 8.32756)
kT2 [keV] : 76.8895 (-99.7251 -99.7251)
R2^2/D10^2 : 1.80715E-04 (-0.000114371 6.64577)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.112e-08 6.410e-09
25- 50 6.531e-09 3.693e-09
50-150 1.109e-08 7.740e-09
15-150 2.874e-08 1.513e-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: 5.82875 ( -0.371874 0.382385 )
Norm@50keV : 5.02866E-05 ( -1.54747e-05 2.0375e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 73.39 using 59 PHA bins.
# Reduced chi-squared = 1.287 for 57 degrees of freedom
# Null hypothesis probability = 7.085638e-02
Photon flux (15-150 keV) in 378.5 sec: 0.174358 ( -0.0159626 0.0160164 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.99975e-06 ( -1.73137e-07 1.73333e-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 : 8.96254E-04 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 361.18 using 59 PHA bins.
# Reduced chi-squared = 6.4497 for 56 degrees of freedom
# Null hypothesis probability = 3.416394e-46
Photon flux (15-150 keV) in 378.5 sec: 0.169940 ( -0.0177 0.01741 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.91761e-06 ( -1.85219e-07 1.82766e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.663557 ( -2.27175 2.37915 )
beta : -10.0000 ( 10 10 )
Epeak [keV] : 8.62895 ( -1.25055 3.84833 )
Norm@50keV : 10.5459 ( -10.5459 19834.3 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.57 using 59 PHA bins.
# Reduced chi-squared = 1.138 for 55 degrees of freedom
# Null hypothesis probability = 2.254271e-01
Photon flux (15-150 keV) in 378.5 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) = 2.63e-07
S(50-100 keV) = 1.85e-08
T90 vs. Hardness ratio plot
T90 = 338.240000009537 sec.
Hardness ratio (energy fluence ratio) = 0.0703422
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.0735576
Count Ratio (50-100 keV) / (15-25 keV) = 0.0212336
Mask shadow pattern
IMX = -8.598103391262944E-02, IMY = 2.613470802688459E-02
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 600.000000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 600.000000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 600.000000
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:
-19.899400 -12.270000
-11.000000 84.832000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9800 -15.6340 0.7 18.5 -44.2 3.1856 16.6 0.4 Sco X-1
256.0067 -37.8337 1.9 17.1 -130.9 1.1086 6.0 1.1 4U 1700-377
256.4216 -36.3740 3.6 15.6 -129.8 0.5727 3.2 3.0 GX 349+2
263.0742 -24.5422 0.0 2.6 -144.5 0.2374 1.4 12.7 GX 1+4
264.8093 -44.2575 0.0 22.3 -153.8 0.2353 1.3 11.9 4U 1735-44
268.5642 -1.5131 12.6 21.1 43.4 0.1697 0.9 12.3 SW J1753.5-0127
270.3607 -25.0764 5.2 7.1 146.0 0.3779 2.2 4.2 GX 5-1
270.1844 -25.6329 3.9 7.2 150.6 0.5327 3.2 9.2 GRS 1758-258
273.9029 -14.1589 14.2 12.7 82.5 0.1486 0.8 9.5 GX 17+2
275.6898 -30.3266 0.0 13.8 158.6 -0.1862 -1.1 12.4 H1820-303
285.1410 -24.8029 131.4 20.1 131.2 0.0169 0.1 9.1 HT1900.1-2455
263.0536 -33.6367 56.0 11.6 -149.7 0.0329 0.2 12.3 GX 354-0
255.4062 -9.2545 2.7 14.9 -3.4 0.7079 4.2 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
84.832000 167.830000
170.000000 221.880000
241.000000 252.720000
254.000000 485.920000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9765 -15.7332 3.4 18.5 -44.5 1.7158 3.4 5.6 Sco X-1
256.1892 -37.8352 9.7 17.0 -131.3 0.6074 1.2 9.6 4U 1700-377
256.1874 -36.3537 22.2 15.7 -129.1 -0.2509 -0.5 12.7 GX 349+2
263.2109 -24.7679 15.5 2.8 -147.6 0.3310 0.7 11.1 GX 1+4
264.7612 -44.4470 88.0 22.5 -153.7 -0.0620 -0.1 0.8 4U 1735-44
268.3788 -1.4598 169.0 21.1 42.8 -0.0358 -0.1 0.8 SW J1753.5-0127
270.1735 -25.2013 19.7 7.0 147.5 -0.2863 -0.6 9.5 GX 5-1
270.1985 -25.7204 4.9 7.2 151.2 -1.2502 -2.7 5.8 GRS 1758-258
274.1093 -14.1348 4.8 12.9 83.0 1.1702 2.4 8.4 GX 17+2
275.7219 -30.3623 115.8 13.9 158.6 -0.0461 -0.1 10.5 H1820-303
284.9654 -24.9733 6.6 20.0 131.7 0.9091 1.7 5.0 HT1900.1-2455
262.9280 -33.9559 5.3 12.0 -149.2 0.9972 2.2 7.9 GX 354-0
302.8358 -23.5419 2.0 36.3 129.1 5.5702 5.9 ------ UNKNOWN
264.5926 -27.0129 0.9 5.1 -163.1 6.3211 13.5 ------ UNKNOWN
235.4254 9.4173 2.3 41.7 -15.2 3.4502 5.0 ------ UNKNOWN
221.5822 -50.7739 2.0 43.4 -113.2 11.8365 5.7 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
750.400630 765.700600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
255.9075 -37.7198 8.5 33.5 12.5 -0.0767 -1.4 8.4 4U 1700-377
256.5354 -36.5460 3.6 33.3 14.8 0.1857 3.2 8.8 GX 349+2
263.1702 -24.8529 0.0 32.6 38.8 0.0966 1.5 10.9 GX 1+4
264.8832 -44.5208 6.6 26.2 -0.0 0.0773 1.7 7.4 4U 1735-44
270.1473 -25.2187 6.3 27.1 45.0 -0.1050 -1.8 11.2 GX 5-1
270.2561 -25.8403 4.6 26.6 44.0 0.1409 2.5 6.3 GRS 1758-258
274.1226 -13.9379 6.4 32.0 67.0 0.1458 1.8 9.0 GX 17+2
276.0933 -30.4774 8.0 19.9 40.2 0.0667 1.4 10.9 H1820-303
284.8737 -24.9344 6.9 17.1 69.4 -0.0867 -1.7 8.9 HT1900.1-2455
262.9645 -33.8235 5.7 29.0 22.6 0.1099 2.0 1.4 GX 354-0
324.5154 3.0333 2.1 47.1 152.9 0.7320 5.5 ------ UNKNOWN
271.3709 -33.3472 2.6 22.5 28.6 0.2038 4.5 ------ UNKNOWN
351.2165 -4.2268 3.0 58.3 -175.0 0.9056 3.8 584.4 UNKNOWN
286.4089 -72.6656 2.2 35.7 -57.5 0.4179 5.3 ------ UNKNOWN
Plot creation:
Sun Jul 3 03:55:49 EDT 2022