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
244.9685 -15.7214 0.0060 17.4 -72.7 4.2270 32.0 TRIG_01079966
------------------------------------------
Foreground time interval of the image:
0.000 64.000 (delta_t = 64.000 [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
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 5.44970 ( -0.349045 0.362855 )
Norm@50keV : 2.36594E-04 ( -6.83216e-05 8.68513e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.49 using 59 PHA bins.
# Reduced chi-squared = 1.167 for 57 degrees of freedom
# Null hypothesis probability = 1.825069e-01
Photon flux (15-150 keV) in 64 sec: 0.564012 ( -0.0502099 0.0504433 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.11848e-06 ( -9.35149e-08 9.36e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 3.14835E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 365.03 using 59 PHA bins.
# Reduced chi-squared = 6.5183 for 56 degrees of freedom
# Null hypothesis probability = 6.649316e-47
Photon flux (15-150 keV) in 64 sec: 0.542310 ( -0.055947 0.054758 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.05608e-06 ( -1.01587e-07 9.99552e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.360346 ( -2.38596 1.86189 )
beta : -8.47277 ( 8.43982 2.45486 )
Epeak [keV] : 8.80865 ( -1.75983 1.224 )
Norm@50keV : 11.5550 ( -11.6322 408.011 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.86 using 59 PHA bins.
# Reduced chi-squared = 1.052 for 55 degrees of freedom
# Null hypothesis probability = 3.701542e-01
Photon flux (15-150 keV) in 64 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] : 2.90536 (-0.20575 0.229071)
R^2/D10^2 : 94.1428 (-39.7167 68.7975)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.32 using 59 PHA bins.
# Reduced chi-squared = 1.023 for 57 degrees of freedom
# Null hypothesis probability = 4.267695e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.205e-07 1.717e-07
25- 50 1.198e-07 2.566e-08
50-150 1.481e-10 9.826e-11
15-150 1.040e-06 1.504e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 5.41964 (-0.575989 0.683973)
Norm : 96.0002 (-33.9561 53.6225)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.313e-07 1.350e-07
25- 50 1.405e-07 3.078e-08
50-150 1.077e-09 6.384e-10
15-150 1.073e-06 1.709e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.95042 (-0.233623 0.25625)
R1^2/D10^2 : 83.4854 (-38.1692 71.9275)
kT2 [keV] : 0.391658 (-0.396122 3.98381)
R2^2/D10^2 : 4.80908E+13 (-3.05028e+13 2.45524e+18)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.002e-07 1.860e-07
25- 50 1.237e-07 3.168e-08
50-150 1.739e-10 1.091e-10
15-150 1.024e-06 2.035e-07
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 5.44970 ( -0.349045 0.362855 )
Norm@50keV : 2.36594E-04 ( -6.83216e-05 8.68513e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.49 using 59 PHA bins.
# Reduced chi-squared = 1.167 for 57 degrees of freedom
# Null hypothesis probability = 1.825069e-01
Photon flux (15-150 keV) in 64 sec: 0.564012 ( -0.0502099 0.0504433 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.11848e-06 ( -9.35149e-08 9.36e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 3.14835E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 365.03 using 59 PHA bins.
# Reduced chi-squared = 6.5183 for 56 degrees of freedom
# Null hypothesis probability = 6.649316e-47
Photon flux (15-150 keV) in 64 sec: 0.542310 ( -0.055947 0.054758 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.05608e-06 ( -1.01587e-07 9.99552e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.360346 ( -2.38596 1.86189 )
beta : -8.47277 ( 8.43982 2.45486 )
Epeak [keV] : 8.80865 ( -1.75983 1.224 )
Norm@50keV : 11.5550 ( -11.6322 407.775 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.86 using 59 PHA bins.
# Reduced chi-squared = 1.052 for 55 degrees of freedom
# Null hypothesis probability = 3.701542e-01
Photon flux (15-150 keV) in 64 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] : 2.90536 (-0.20575 0.229071)
R^2/D10^2 : 94.1428 (-39.7167 68.7975)
(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 9.205e-07 1.826e-07
25- 50 1.198e-07 2.637e-08
50-150 1.481e-10 9.620e-11
15-150 1.040e-06 1.686e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 5.41964 (-0.575989 0.683973)
Norm : 96.0002 (-33.9561 53.6225)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.313e-07 1.408e-07
25- 50 1.405e-07 3.094e-08
50-150 1.077e-09 6.574e-10
15-150 1.073e-06 1.466e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.95042 (-0.233623 0.25625)
R1^2/D10^2 : 83.4854 (-38.1692 71.9275)
kT2 [keV] : 0.391658 (-0.396122 3.98381)
R2^2/D10^2 : 4.80908E+13 (-3.05028e+13 6.57262e+18)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.002e-07 1.684e-07
25- 50 1.237e-07 3.181e-08
50-150 1.739e-10 1.149e-10
15-150 1.024e-06 1.869e-07
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: 5.44970 ( -0.349045 0.362855 )
Norm@50keV : 2.36594E-04 ( -6.83216e-05 8.68513e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.49 using 59 PHA bins.
# Reduced chi-squared = 1.167 for 57 degrees of freedom
# Null hypothesis probability = 1.825069e-01
Photon flux (15-150 keV) in 64 sec: 0.564012 ( -0.0502099 0.0504433 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.11848e-06 ( -9.35149e-08 9.36e-08 ) 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 : 3.14835E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 365.03 using 59 PHA bins.
# Reduced chi-squared = 6.5183 for 56 degrees of freedom
# Null hypothesis probability = 6.649316e-47
Photon flux (15-150 keV) in 64 sec: 0.542310 ( -0.055947 0.054758 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.05608e-06 ( -1.01587e-07 9.99552e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.360346 ( -2.38596 1.86189 )
beta : -8.47277 ( 8.43982 2.45486 )
Epeak [keV] : 8.80865 ( -1.75983 1.224 )
Norm@50keV : 11.5550 ( -11.6322 407.988 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.86 using 59 PHA bins.
# Reduced chi-squared = 1.052 for 55 degrees of freedom
# Null hypothesis probability = 3.701542e-01
Photon flux (15-150 keV) in 64 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) = 1.74e-07
S(50-100 keV) = 1.60e-08
T90 vs. Hardness ratio plot
T90 = 64 sec.
Hardness ratio (energy fluence ratio) = 0.091954
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.126605
Count Ratio (50-100 keV) / (15-25 keV) = -0.0157436
Mask shadow pattern
IMX = 9.284083763493656E-02, IMY = 2.986859661321129E-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:
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 64.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9685 -15.7214 0.4 17.4 -72.7 4.2269 32.0 4.9 Sco X-1
254.3585 35.4799 16.6 54.9 1.3 -0.3299 -0.7 9.6 Her X-1
256.0189 -37.9908 3.5 20.1 -154.4 0.3836 3.3 8.9 4U 1700-377
256.4057 -36.5017 5.1 18.6 -153.7 0.2746 2.3 4.9 GX 349+2
263.0374 -24.8933 6.9 6.1 -171.7 0.1996 1.7 9.0 GX 1+4
264.7329 -44.5389 4.8 25.8 -173.3 0.3093 2.4 5.4 4U 1735-44
268.4951 -1.3572 8.0 18.3 27.9 0.1841 1.4 9.5 SW J1753.5-0127
270.1830 -25.1680 4.0 9.3 144.2 0.3754 3.0 7.7 GX 5-1
270.4563 -25.6813 6.5 9.8 145.5 0.2675 2.1 9.1 GRS 1758-258
273.9913 -14.1837 12.4 11.6 77.9 0.1280 0.9 8.9 GX 17+2
276.0224 -30.4226 4.7 16.6 146.5 0.3171 2.5 6.0 H1820-303
284.8386 -24.8338 0.0 21.2 120.1 0.0613 0.4 11.9 HT1900.1-2455
288.7939 10.9422 104.2 39.2 52.5 0.0358 0.1 0.3 GRS 1915+105
262.8559 -33.8726 6.2 15.0 -170.2 0.2273 1.9 7.0 GX 354-0
291.6873 -51.5058 2.5 39.8 161.8 1.0270 4.6 ------ UNKNOWN
222.8965 -21.0047 2.6 37.6 -90.5 1.6244 4.3 ------ UNKNOWN
217.7608 -54.1018 2.2 49.2 -137.0 2.2248 5.2 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
-60.000000 243.073900
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9623 -15.7336 0.3 17.4 -72.8 20.0412 44.0 5.7 Sco X-1
254.4889 35.2956 4.8 54.7 1.4 3.5870 2.4 3.2 Her X-1
255.9941 -37.9305 1.8 20.0 -154.2 2.3927 6.4 5.2 4U 1700-377
256.2817 -36.5340 4.6 18.6 -153.5 1.0113 2.5 10.0 GX 349+2
262.8713 -24.8983 5.5 6.1 -170.2 0.7979 2.1 11.8 GX 1+4
264.5977 -44.6205 0.0 25.8 -173.1 0.2887 0.7 12.0 4U 1735-44
268.3055 -1.5141 8.0 18.1 27.5 0.5726 1.5 5.3 SW J1753.5-0127
270.1308 -25.1409 3.3 9.2 144.2 1.4230 3.5 9.1 GX 5-1
270.3592 -25.8845 9.5 9.9 146.7 0.5181 1.2 9.0 GRS 1758-258
273.9424 -14.1483 5.2 11.6 77.6 0.9909 2.2 7.7 GX 17+2
275.9992 -30.4271 3.1 16.6 146.5 1.5681 3.7 5.3 H1820-303
285.2332 -25.0058 16.0 21.6 120.4 0.4108 0.7 11.9 HT1900.1-2455
288.9014 11.0572 43.8 39.4 52.5 0.2924 0.3 9.0 GRS 1915+105
262.8879 -33.8817 7.2 15.1 -170.3 0.6439 1.6 5.8 GX 354-0
Plot creation:
Mon Oct 18 21:21:33 EDT 2021