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
229.8846 -57.3085 0.1093 24.8 148.7 0.0600 1.8 TRIG_01218604
------------------------------------------
Foreground time interval of the image:
-17.699 -11.870 (delta_t = 5.829 [sec])
-11.000 -9.880 (delta_t = 1.120 [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
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
-54.208000 -54.070000
-48.000000 -11.870000
-11.000000 -9.880000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.73079 ( -0.427372 0.511304 )
Norm@50keV : 8.28901E-04 ( -0.000308466 0.000322054 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.40 using 59 PHA bins.
# Reduced chi-squared = 1.253 for 57 degrees of freedom
# Null hypothesis probability = 9.493290e-02
Photon flux (15-150 keV) in 37.39 sec: 0.188831 ( -0.0353411 0.0353878 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.33331e-07 ( -8.0519e-08 8.75274e-08 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-54.208000 -54.070000
-48.000000 -11.870000
-11.000000 -9.880000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.84516 ( )
Epeak [keV] : 5.03651 ( )
Norm@50keV : 3.56205E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.48 using 59 PHA bins.
# Reduced chi-squared = 1.276 for 56 degrees of freedom
# Null hypothesis probability = 7.957717e-02
Photon flux (15-150 keV) in 37.39 sec: 0.187588 ( -0.039229 0.036298 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.22393e-07 ( -1.13457e-07 9.66404e-08 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
-54.208000 -54.070000
-48.000000 -11.870000
-11.000000 -9.880000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -2.08149 ( 2.08149 2.08149 )
beta : -2.73079 ( -0.511147 0.427174 )
Epeak [keV] : 1.06957 ( -1.06957 -1.06957 )
Norm@50keV : 0.112660 ( -0.0384763 0.0437714 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.40 using 59 PHA bins.
# Reduced chi-squared = 1.298 for 55 degrees of freedom
# Null hypothesis probability = 6.769092e-02
Photon flux (15-150 keV) in 37.39 sec: 0.188025 ( ) 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] : 5.54453 (-0.96298 1.16348)
R^2/D10^2 : 0.980667 (-0.559628 1.35232)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 72.29 using 59 PHA bins.
# Reduced chi-squared = 1.268 for 57 degrees of freedom
# Null hypothesis probability = 8.346783e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.325e-07 5.300e-08
25- 50 1.107e-07 4.756e-08
50-150 7.253e-09 5.532e-09
15-150 2.505e-07 9.331e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 20.9483 (-7.36423 13.6005)
Norm : 2.15152 (-0.854282 1.61659)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.296e-07 3.416e-08
25- 50 1.176e-07 4.365e-08
50-150 3.802e-08 2.687e-08
15-150 2.852e-07 8.570e-08
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.09103 (-1.05039 1.151)
R1^2/D10^2 : 1.34992 (-0.802473 2.41743)
kT2 [keV] : 32.8211 (-21.948 -32.4832)
R2^2/D10^2 : 4.37398E-04 (-0.000436632 0.015348)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.345e-07 6.833e-08
25- 50 1.067e-07 5.935e-08
50-150 1.255e-07 8.191e-08
15-150 3.667e-07 1.840e-07
Peak spectrum fit
Power-law model
Time interval is from -45.420 sec. to -44.420 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.63579 ( -1.43024 3.34158 )
Norm@50keV : 2.27592E-03 ( -0.00227161 0.00271928 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.01 using 59 PHA bins.
# Reduced chi-squared = 0.8774 for 57 degrees of freedom
# Null hypothesis probability = 7.324787e-01
Photon flux (15-150 keV) in 1 sec: 0.486912 ( -0.486912 0.261168 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.36668e-08 ( -1.67218e-08 2.24186e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -45.420 sec. to -44.420 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.93884 ( )
Epeak [keV] : 3.80814 ( )
Norm@50keV : 5.65708E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.48 using 59 PHA bins.
# Reduced chi-squared = 0.9015 for 56 degrees of freedom
# Null hypothesis probability = 6.829576e-01
Photon flux (15-150 keV) in 1 sec: 0.483660 ( -0.266315 0.264102 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.42217e-08 ( -2.42217e-08 2.18448e-08 ) ergs/cm2
Band function
Time interval is from -45.420 sec. to -44.420 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.79315 ( 1.79292 1.79292 )
beta : -2.62791 ( 2.63666 1.42963 )
Epeak [keV] : 2.84603 ( -2.82091 -2.82091 )
Norm@50keV : 1.80125E-02 ( -0.0184957 3.77839e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.01 using 59 PHA bins.
# Reduced chi-squared = 0.9093 for 55 degrees of freedom
# Null hypothesis probability = 6.652401e-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] : 5.32275 (-5.32514 5.18812)
R^2/D10^2 : 2.83402 (-2.82855 1907.23)
(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 8.795e-09 5.650e-09
25- 50 6.681e-09 4.836e-09
50-150 3.645e-10 4.059e-10
15-150 1.584e-08 1.045e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 18.9094 (-18.975 -18.975)
Norm : 5.95325 (-5.92025 268.807)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.791e-09 5.650e-09
25- 50 7.365e-09 5.345e-09
50-150 2.004e-09 2.243e-09
15-150 1.816e-08 1.325e-08
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.89805 (-3.39245 3.91458)
R1^2/D10^2 : 3.90922 (-3.64733 135.59)
kT2 [keV] : 199.028 (-199.088 -199.088)
R2^2/D10^2 : 8.71964E-05 (-8.27604e-05 1.47171)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.932e-09 5.660e-09
25- 50 6.155e-09 3.886e-09
50-150 2.356e-08 1.416e-08
15-150 3.865e-08 2.139e-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: 3.49560 ( -1.07815 2.49579 )
Norm@50keV : 3.42031E-04 ( -0.000342081 0.000516437 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.30 using 59 PHA bins.
# Reduced chi-squared = 1.216 for 57 degrees of freedom
# Null hypothesis probability = 1.272448e-01
Photon flux (15-150 keV) in 6.949 sec: 0.137836 ( -0.0622134 0.0628156 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.7299e-08 ( -2.05093e-08 2.50111e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.886736 ( )
Epeak [keV] : 12.8197 ( )
Norm@50keV : 2.31467E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.69 using 59 PHA bins.
# Reduced chi-squared = 1.227 for 56 degrees of freedom
# Null hypothesis probability = 1.188032e-01
Photon flux (15-150 keV) in 6.949 sec: 0.142497 ( -0.0592353 0.06019 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.76923e-08 ( -9.27719e-09 2.01042e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 1.06298 ( 1.55627 1.55627 )
beta : -10.0000 ( 10 20 )
Epeak [keV] : 19.9488 ( -8.72949 9.96516 )
Norm@50keV : 0.534182 ( -0.534741 1122.58 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.62 using 59 PHA bins.
# Reduced chi-squared = 1.248 for 55 degrees of freedom
# Null hypothesis probability = 1.025109e-01
Photon flux (15-150 keV) in 6.949 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) = 1.12e-07
S(50-100 keV) = 6.75e-08
T90 vs. Hardness ratio plot
T90 = 38.4359999895096 sec.
Hardness ratio (energy fluence ratio) = 0.602679
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.718503
Count Ratio (50-100 keV) / (15-25 keV) = 0.277643
Mask shadow pattern
IMX = -3.937485216035627E-01, IMY = -2.398494965378660E-01
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:
-17.699400 -12.460000
-10.000000 13.930000
31.000000 60.130000
61.000000 86.920000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.5331 -60.7512 8.8 30.9 83.3 0.4011 1.3 10.0 Cen X-3
186.6764 -62.7603 0.5 26.3 96.7 5.8327 22.2 0.8 GX 301-2
255.8539 -37.9003 8.7 42.3 -175.4 0.4177 1.3 7.1 4U 1700-377
256.2799 -36.3205 5.3 43.8 -174.9 0.7266 2.2 9.7 GX 349+2
263.0367 -24.7686 13.4 55.3 -167.1 -0.5737 -0.9 2.0 GX 1+4
264.9777 -44.5671 0.0 35.6 -164.5 -0.3314 -1.5 12.3 4U 1735-44
270.2264 -25.1778 14.4 55.1 -159.2 -0.5734 -0.8 6.7 GX 5-1
270.4902 -25.8316 5.9 54.4 -158.8 -1.2762 -1.9 11.4 GRS 1758-258
275.7733 -30.3181 4.8 50.1 -152.7 -1.0222 -2.4 8.4 H1820-303
263.0812 -33.7264 6.3 46.4 -167.0 0.6200 1.8 8.0 GX 354-0
229.7477 -57.3542 1.2 24.7 148.5 1.9443 9.4 ------ UNKNOWN
317.8659 -65.5662 2.2 20.6 -90.2 1.0676 5.1 ------ UNKNOWN
32.4025 -41.6528 2.6 55.2 -32.2 4.6654 4.5 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-17.699400 -11.870000
-11.000000 -9.880000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.0230 -60.5035 30.1 31.2 83.0 -0.0200 -0.4 11.2 Cen X-3
186.8098 -62.7373 2.0 26.3 96.9 0.2612 5.7 4.6 GX 301-2
255.8713 -38.0023 0.0 42.2 -175.4 0.0223 0.5 10.9 4U 1700-377
256.3565 -36.4630 7.8 43.7 -174.8 0.0762 1.5 4.5 GX 349+2
262.9780 -24.7823 5.9 55.3 -167.2 -0.2246 -2.0 2.8 GX 1+4
264.6950 -44.3056 224.6 35.8 -164.9 0.0020 0.1 8.9 4U 1735-44
270.2327 -25.0633 28.2 55.2 -159.1 0.0496 0.4 3.0 GX 5-1
270.4694 -25.8012 6.1 54.4 -158.9 -0.2152 -1.9 9.7 GRS 1758-258
275.8952 -30.3136 10.9 50.1 -152.6 -0.0883 -1.1 3.6 H1820-303
262.9889 -33.8868 5.6 46.2 -167.1 -0.1162 -2.1 3.1 GX 354-0
77.8113 -43.8522 2.0 56.0 8.0 1.0491 5.7 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
177.000000 230.870000
232.000000 289.750000
291.000000 554.190000
555.000000 654.464600
661.000000 709.780000
711.000000 718.869200
721.000000 726.390000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.3758 -60.6314 3.3 29.7 33.3 4.6241 3.5 1.8 Cen X-3
186.6678 -62.7596 0.5 21.7 32.6 22.5619 21.6 0.7 GX 301-2
244.9779 -15.6567 1.6 43.3 176.7 13.6576 7.4 1.0 Sco X-1
256.0228 -37.9209 3.7 26.0 -152.1 3.1823 3.1 4.9 4U 1700-377
256.3634 -36.3622 6.3 27.4 -153.4 1.9730 1.8 5.0 GX 349+2
263.1116 -24.6123 8.4 40.5 -154.7 2.2122 1.4 9.8 GX 1+4
264.5371 -44.3071 192.3 25.2 -131.1 -0.0657 -0.1 12.3 4U 1735-44
270.4448 -25.1658 3.7 43.3 -145.6 -6.0099 -3.2 10.2 GX 5-1
270.1591 -25.7344 5.0 42.7 -145.5 -4.0557 -2.3 7.8 GRS 1758-258
273.9304 -14.0383 6.8 54.6 -149.0 7.7308 1.7 4.4 GX 17+2
275.9246 -30.3665 37.0 41.6 -135.3 -0.6294 -0.3 0.0 H1820-303
262.8386 -33.9684 0.0 32.3 -147.1 0.6783 0.5 11.0 GX 354-0
243.6330 -15.6804 2.5 43.0 174.8 8.4298 4.7 ------ UNKNOWN
245.5038 -11.6491 2.2 47.3 176.2 12.6994 5.3 ------ UNKNOWN
229.7755 -57.3777 1.4 0.0 -85.3 8.3762 8.5 ------ UNKNOWN
34.4029 -66.9394 2.1 55.2 -32.3 29.0331 5.5 ------ UNKNOWN
325.4853 -63.5461 2.5 43.1 -65.5 19.0586 4.6 ------ UNKNOWN
Plot creation:
Tue Mar 5 08:12:54 EST 2024