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
229.7725 -57.3675 0.0194 17.6 47.0 1.9766 9.9 TRIG_01218452
------------------------------------------
Foreground time interval of the image:
-15.999 72.301 (delta_t = 88.300 [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
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
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 64.000000
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 64.000000
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
-82.692000 265.800000
285.000000 334.320000
335.000000 528.190000
529.000000 556.920000
558.000000 633.720000
635.000000 750.728000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.48196 ( -0.110653 0.113889 )
Norm@50keV : 7.37141E-04 ( -5.36885e-05 5.32699e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 77.20 using 59 PHA bins.
# Reduced chi-squared = 1.354 for 57 degrees of freedom
# Null hypothesis probability = 3.865089e-02
Photon flux (15-150 keV) in 810.4 sec: 0.143223 ( -0.00760629 0.00762929 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.94506e-06 ( -3.2848e-07 3.31243e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-82.692000 265.800000
285.000000 334.320000
335.000000 528.190000
529.000000 556.920000
558.000000 633.720000
635.000000 750.728000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.68036 ( -0.60096 0.414989 )
Epeak [keV] : 15.1055 ( -11.7471 10.2982 )
Norm@50keV : 2.23580E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.78 using 59 PHA bins.
# Reduced chi-squared = 1.246 for 56 degrees of freedom
# Null hypothesis probability = 1.019955e-01
Photon flux (15-150 keV) in 810.4 sec: 0.137000 ( -0.008482 0.008507 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.47135e-06 ( -4.01091e-07 4.25663e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
-82.692000 265.800000
285.000000 334.320000
335.000000 528.190000
529.000000 556.920000
558.000000 633.720000
635.000000 750.728000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.31655 ( -0.572302 1.31963 )
beta : -2.92974 ( 2.9335 0.440939 )
Epeak [keV] : 20.4271 ( -11.6966 6.39831 )
Norm@50keV : 3.96965E-03 ( -0.00228018 183.837 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.88 using 59 PHA bins.
# Reduced chi-squared = 1.252 for 55 degrees of freedom
# Null hypothesis probability = 9.883466e-02
Photon flux (15-150 keV) in 810.4 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 5.71523e-06 ( -5.70956e-06 -3.66195e-07 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 8.06447 ( )
R^2/D10^2 : 0.139691 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 119.25 using 59 PHA bins.
# Reduced chi-squared = 2.0921 for 57 degrees of freedom
# Null hypothesis probability = 2.684221e-06
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.339e-06 1.240e-07
25- 50 2.377e-06 1.370e-07
50-150 6.407e-07 1.039e-07
15-150 4.357e-06 2.682e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 34.6960 (-4.12147 4.91257)
Norm : 0.990809 (-0.112803 0.130024)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.748e-06 1.329e-07
25- 50 2.154e-06 1.191e-07
50-150 1.416e-06 2.241e-07
15-150 5.318e-06 3.420e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.72553 (-0.93244 1.05282)
R1^2/D10^2 : 0.915384 (-0.482213 0.922219)
kT2 [keV] : 13.1314 (-2.2771 4.16897)
R2^2/D10^2 : 1.23093E-02 (-0.00895569 0.0106564)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.796e-06 5.231e-07
25- 50 2.081e-06 4.939e-07
50-150 1.417e-06 6.235e-07
15-150 5.295e-06 1.508e-06
Peak spectrum fit
Power-law model
Time interval is from -80.604 sec. to -79.604 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.00719 ( -0.940217 1.14432 )
Norm@50keV : 2.84835E-03 ( -0.00284791 0.00150682 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 87.96 using 59 PHA bins.
# Reduced chi-squared = 1.543 for 57 degrees of freedom
# Null hypothesis probability = 5.293239e-03
Photon flux (15-150 keV) in 1 sec: 0.428671 ( -0.174616 0.1746 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.62729e-08 ( -1.30823e-08 1.45416e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -80.604 sec. to -79.604 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.12981 ( -9.63428 1.02283 )
Epeak [keV] : 51.5204 ( )
Norm@50keV : 2.01008E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 87.45 using 59 PHA bins.
# Reduced chi-squared = 1.562 for 56 degrees of freedom
# Null hypothesis probability = 4.552169e-03
Photon flux (15-150 keV) in 1 sec: 0.428769 ( -0.174535 0.174353 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.57107e-08 ( -1.25625e-08 1.48067e-08 ) ergs/cm2
Band function
Time interval is from -80.604 sec. to -79.604 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.51206 ( 1.51692 1.51692 )
beta : -1.97961 ( 1.99113 0.92259 )
Epeak [keV] : 16.0928 ( -11.8386 -11.8386 )
Norm@50keV : 7.95867E-03 ( -0.0086617 0.583339 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 87.96 using 59 PHA bins.
# Reduced chi-squared = 1.599 for 55 degrees of freedom
# Null hypothesis probability = 3.146965e-03
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] : 8.32758 (-2.77508 4.53545)
R^2/D10^2 : 0.400501 (-0.400498 1.59763)
(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 5.166e-09 3.308e-09
25- 50 9.682e-09 6.320e-09
50-150 2.896e-09 2.572e-09
15-150 1.775e-08 1.167e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 59.3430 (-59.7203 -59.7203)
Norm : 2.20595 (-1.19986 4.14463)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.534e-09 3.635e-09
25- 50 8.394e-09 5.580e-09
50-150 9.464e-09 8.235e-09
15-150 2.339e-08 1.635e-08
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.38082 (-2.93754 2.65577)
R1^2/D10^2 : 0.575372 (-0.358812 4.04457)
kT2 [keV] : 199.119 (-199.267 -199.267)
R2^2/D10^2 : 7.09853E-05 (-5.51708e-05 0.00224292)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.757e-09 2.770e-09
25- 50 8.760e-09 5.700e-09
50-150 3.940e-09 3.179e-09
15-150 1.846e-08 1.136e-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: 2.25640 ( -0.223175 0.23846 )
Norm@50keV : 1.00291E-03 ( -0.000163862 0.000160821 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 73.19 using 59 PHA bins.
# Reduced chi-squared = 1.284 for 57 degrees of freedom
# Null hypothesis probability = 7.295978e-02
Photon flux (15-150 keV) in 88.3 sec: 0.171115 ( -0.0193757 0.0193813 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.39836e-07 ( -1.13604e-07 1.16927e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.55408 ( -1.43956 0.448074 )
Epeak [keV] : 23.2387 ( )
Norm@50keV : 2.75435E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.98 using 59 PHA bins.
# Reduced chi-squared = 1.285 for 56 degrees of freedom
# Null hypothesis probability = 7.379968e-02
Photon flux (15-150 keV) in 88.3 sec: 0.166690 ( -0.020379 0.020468 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.71241e-07 ( -1.33055e-07 1.55494e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.181326 ( 0.894951 0.894951 )
beta : -2.61728 ( 2.6089 0.461314 )
Epeak [keV] : 26.1187 ( -25.6696 9.26071 )
Norm@50keV : 2.68045E-02 ( -0.0259249 221.784 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 70.72 using 59 PHA bins.
# Reduced chi-squared = 1.286 for 55 degrees of freedom
# Null hypothesis probability = 7.514593e-02
Photon flux (15-150 keV) in 88.3 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) = 1.97e-06
S(50-100 keV) = 1.41e-06
T90 vs. Hardness ratio plot
T90 = 773.167999863625 sec.
Hardness ratio (energy fluence ratio) = 0.715736
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.824666
Count Ratio (50-100 keV) / (15-25 keV) = 0.247451
Mask shadow pattern
IMX = 2.157289789782637E-01, IMY = -2.312716750201151E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
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:
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-15.999410 72.300600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.5099 -60.6336 9.1 46.9 37.9 0.7039 1.3 5.7 Cen X-3
186.5865 -62.7534 2.6 39.0 38.7 1.6986 4.4 2.2 GX 301-2
244.9598 -15.6279 1.2 34.3 157.6 2.9773 10.0 1.4 Sco X-1
255.8477 -37.7916 6.2 11.0 177.1 0.3678 1.9 7.3 4U 1700-377
256.6158 -36.4510 16.9 12.4 179.9 0.1384 0.7 8.9 GX 349+2
263.0131 -24.7433 283.0 24.8 -167.8 0.0079 0.0 0.3 GX 1+4
264.7427 -44.4505 376.7 7.6 -125.3 0.0059 0.0 0.0 4U 1735-44
268.3716 -1.4462 19.3 48.6 -166.9 -0.2818 -0.6 0.4 SW J1753.5-0127
270.1422 -25.1585 6.5 26.2 -153.1 0.3723 1.8 9.1 GX 5-1
270.3980 -25.6283 4.4 25.9 -152.2 0.5778 2.8 8.6 GRS 1758-258
273.8662 -13.9981 5.2 37.9 -154.4 0.6219 2.2 8.4 GX 17+2
275.7405 -30.3044 11.1 24.0 -137.0 0.2146 1.0 10.3 H1820-303
285.0424 -24.9249 62.6 33.2 -129.4 0.0539 0.2 0.4 HT1900.1-2455
263.0065 -33.8711 2.6 15.9 -161.0 0.8756 4.5 2.3 GX 354-0
201.3777 -36.1803 2.1 40.9 83.0 4.4014 5.5 ------ UNKNOWN
208.9581 -43.5562 3.3 32.2 77.3 1.2260 3.5 ------ UNKNOWN
229.7724 -57.3674 1.2 17.6 47.0 1.9768 9.9 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
124.300600 265.800000
285.000000 334.320000
335.000000 528.190000
529.000000 556.920000
558.000000 633.720000
635.000000 641.700590
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.1035 -60.7912 15.8 29.8 33.7 0.8539 0.7 11.9 Cen X-3
186.6460 -62.7613 0.8 21.7 33.3 14.2355 14.6 0.6 GX 301-2
244.9798 -15.6369 1.5 43.3 177.3 12.6925 7.8 0.2 Sco X-1
255.8505 -37.8495 2.9 26.0 -151.8 3.6675 4.0 6.5 4U 1700-377
256.4347 -36.4794 4.1 27.4 -152.6 2.8059 2.8 3.4 GX 349+2
262.8579 -24.5840 0.0 40.5 -154.4 1.8364 1.3 12.7 GX 1+4
264.7033 -44.4683 4.1 25.1 -130.1 2.7740 2.8 2.0 4U 1735-44
270.4565 -25.2278 7.0 43.2 -144.9 2.9188 1.7 12.9 GX 5-1
270.2968 -25.7085 4.6 42.7 -144.7 4.0754 2.5 2.1 GRS 1758-258
273.8796 -14.0142 10.3 54.6 -148.4 4.1715 1.1 7.5 GX 17+2
275.9232 -30.3722 115.5 41.6 -134.7 0.1905 0.1 0.3 H1820-303
263.0491 -33.8329 4.8 32.5 -146.3 2.7613 2.4 3.0 GX 354-0
203.1662 -19.9582 3.0 42.2 116.9 18.1496 3.9 ------ UNKNOWN
186.1773 -40.8951 3.6 32.1 77.4 5.1232 3.2 ------ UNKNOWN
229.7771 -57.3655 1.4 0.0 -148.3 7.0780 8.4 ------ UNKNOWN
322.9962 -75.2470 2.3 36.2 -49.8 7.1885 5.0 ------ UNKNOWN
33.0886 -66.8096 2.3 55.2 -32.3 23.8338 5.1 ------ UNKNOWN
Plot creation:
Mon Mar 4 11:12:26 EST 2024