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
299.5440 +34.9681 0.0119 22.6 14.7 2.1841 16.2 TRIG_01071768
------------------------------------------
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: 1.83024 ( -0.158671 0.16368 )
Norm@50keV : 1.89195E-03 ( -0.000202355 0.000199417 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.41 using 59 PHA bins.
# Reduced chi-squared = 1.042 for 57 degrees of freedom
# Null hypothesis probability = 3.880174e-01
Photon flux (15-150 keV) in 64 sec: 0.263826 ( -0.02371 0.0237153 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.11375e-06 ( -1.19187e-07 1.21427e-07 ) 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: 0.936295 ( -0.894877 0.712347 )
Epeak [keV] : 48.5608 ( -9.56016 35.0506 )
Norm@50keV : 6.31248E-03 ( -0.0038552 0.0153188 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.60 using 59 PHA bins.
# Reduced chi-squared = 0.9750 for 56 degrees of freedom
# Null hypothesis probability = 5.278958e-01
Photon flux (15-150 keV) in 64 sec: 0.254729 ( -0.024629 0.024691 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.00204e-06 ( -1.3833e-07 1.46886e-07 ) 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 : 4.63494 ( -4.41215 -4.63494 )
beta : -2.23570 ( -0.300742 0.253772 )
Epeak [keV] : 28.1706 ( -2.85258 2.92706 )
Norm@50keV : 75.1453 ( -6.61905 243.412 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.73 using 59 PHA bins.
# Reduced chi-squared = 0.8678 for 55 degrees of freedom
# Null hypothesis probability = 7.460044e-01
Photon flux (15-150 keV) in 64 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.03568e-06 ( -1.03523e-06 -1.23667e-07 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 10.0727 (-1.01612 1.16576)
R^2/D10^2 : 0.122142 (-0.0416486 0.0611171)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.37 using 59 PHA bins.
# Reduced chi-squared = 1.217 for 57 degrees of freedom
# Null hypothesis probability = 1.260169e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.619e-07 2.531e-08
25- 50 4.067e-07 4.387e-08
50-150 2.168e-07 5.283e-08
15-150 7.854e-07 8.576e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 83.7639 (-22.3468 38.0849)
Norm : 1.22852 (-0.155706 0.187115)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.046e-07 2.950e-08
25- 50 3.404e-07 3.277e-08
50-150 4.954e-07 2.091e-07
15-150 1.040e-06 2.006e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.30380 (-1.32559 1.37324)
R1^2/D10^2 : 0.318333 (-0.139306 0.334844)
kT2 [keV] : 25.9580 (-8.52416 25.8364)
R2^2/D10^2 : 2.13019E-03 (-0.00191611 0.00807427)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.977e-07 5.878e-08
25- 50 3.608e-07 1.152e-07
50-150 5.009e-07 2.597e-07
15-150 1.059e-06 4.048e-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: 1.83024 ( -0.158671 0.16368 )
Norm@50keV : 1.89195E-03 ( -0.000202355 0.000199417 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.41 using 59 PHA bins.
# Reduced chi-squared = 1.042 for 57 degrees of freedom
# Null hypothesis probability = 3.880174e-01
Photon flux (15-150 keV) in 64 sec: 0.263826 ( -0.02371 0.0237153 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.11375e-06 ( -1.19187e-07 1.21427e-07 ) 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: 0.936295 ( -0.894877 0.712347 )
Epeak [keV] : 48.5608 ( -9.56016 35.0506 )
Norm@50keV : 6.31248E-03 ( -0.0038552 0.0153188 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.60 using 59 PHA bins.
# Reduced chi-squared = 0.9750 for 56 degrees of freedom
# Null hypothesis probability = 5.278958e-01
Photon flux (15-150 keV) in 64 sec: 0.254729 ( -0.024629 0.024691 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.00204e-06 ( -1.3833e-07 1.46886e-07 ) 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 : 4.63494 ( -4.41215 -4.63494 )
beta : -2.23570 ( -0.300742 0.253772 )
Epeak [keV] : 28.1706 ( -2.85258 2.92706 )
Norm@50keV : 75.1453 ( -6.61905 243.412 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.73 using 59 PHA bins.
# Reduced chi-squared = 0.8678 for 55 degrees of freedom
# Null hypothesis probability = 7.460044e-01
Photon flux (15-150 keV) in 64 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.03568e-06 ( -1.03523e-06 -1.23667e-07 ) ergs/cm2
Single BB
XSPEC: quit
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 10.0727 (-1.01612 1.16576)
R^2/D10^2 : 0.122142 (-0.0416486 0.0611171)
(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 1.619e-07 2.384e-08
25- 50 4.067e-07 4.397e-08
50-150 2.168e-07 5.382e-08
15-150 7.854e-07 9.120e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 83.7639 (-22.3468 38.0849)
Norm : 1.22852 (-0.155706 0.187115)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.046e-07 2.694e-08
25- 50 3.404e-07 3.507e-08
50-150 4.954e-07 2.117e-07
15-150 1.040e-06 2.054e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.30380 (-1.32559 1.37323)
R1^2/D10^2 : 0.318333 (-0.139306 0.334844)
kT2 [keV] : 25.9580 (-8.52416 25.8364)
R2^2/D10^2 : 2.13019E-03 (-0.00191611 0.00807427)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.977e-07 6.966e-08
25- 50 3.608e-07 1.218e-07
50-150 5.009e-07 2.570e-07
15-150 1.059e-06 4.274e-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: 1.83024 ( -0.158671 0.16368 )
Norm@50keV : 1.89195E-03 ( -0.000202355 0.000199417 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.41 using 59 PHA bins.
# Reduced chi-squared = 1.042 for 57 degrees of freedom
# Null hypothesis probability = 3.880174e-01
Photon flux (15-150 keV) in 64 sec: 0.263826 ( -0.02371 0.0237153 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.11375e-06 ( -1.19187e-07 1.21427e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.936295 ( -0.894877 0.712347 )
Epeak [keV] : 48.5608 ( -9.56016 35.0506 )
Norm@50keV : 6.31248E-03 ( -0.0038552 0.0153188 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.60 using 59 PHA bins.
# Reduced chi-squared = 0.9750 for 56 degrees of freedom
# Null hypothesis probability = 5.278958e-01
Photon flux (15-150 keV) in 64 sec: 0.254729 ( -0.024629 0.024691 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.00204e-06 ( -1.3833e-07 1.46886e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.63494 ( -4.41215 -4.63494 )
beta : -2.23570 ( -0.300742 0.253772 )
Epeak [keV] : 28.1706 ( -2.85258 2.92706 )
Norm@50keV : 75.1453 ( -6.61905 243.412 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.73 using 59 PHA bins.
# Reduced chi-squared = 0.8678 for 55 degrees of freedom
# Null hypothesis probability = 7.460044e-01
Photon flux (15-150 keV) in 64 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.03568e-06 ( -1.03523e-06 -1.23667e-07 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 3.17e-07
S(50-100 keV) = 3.57e-07
T90 vs. Hardness ratio plot
T90 = 64 sec.
Hardness ratio (energy fluence ratio) = 1.12618
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.28034
Count Ratio (50-100 keV) / (15-25 keV) = 0.647314
Mask shadow pattern
IMX = 4.019913800573111E-01, IMY = -1.055230638364427E-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] [']
244.9765 -15.6500 264.7 50.7 -147.0 0.0159 0.0 0.6 Sco X-1
254.3754 35.2336 4.0 32.4 -68.9 0.5813 2.9 7.7 Her X-1
263.0649 -24.6354 5.2 46.4 -172.1 -0.5422 -2.2 7.3 GX 1+4
268.2595 -1.3485 6.5 24.2 -156.6 0.2382 1.8 9.0 SW J1753.5-0127
270.2148 -24.9400 4.5 44.1 179.4 0.6090 2.6 9.2 GX 5-1
270.2505 -25.5661 0.0 44.6 179.1 -0.2787 -1.2 11.0 GRS 1758-258
274.0553 -14.1889 4.5 32.7 179.6 0.4085 2.5 9.6 GX 17+2
275.8172 -30.4781 6.1 48.1 170.7 0.6118 1.9 8.7 H1820-303
285.1436 -24.9879 7.0 41.9 159.8 0.4237 1.6 7.1 HT1900.1-2455
288.7083 11.1366 0.0 7.1 124.2 -0.0555 -0.5 12.6 GRS 1915+105
299.5791 35.0386 0.8 22.6 14.6 1.9009 14.1 9.8 Cyg X-1
308.2778 41.0469 5.5 31.7 16.3 0.3091 2.1 9.5 Cyg X-3
326.1968 38.2706 9.5 42.3 31.9 0.3241 1.2 3.3 Cyg X-2
262.9930 -33.8066 332.6 54.7 -177.4 0.0139 0.0 1.7 GX 354-0
307.9771 37.4046 1.5 29.2 21.5 1.1578 7.6 ------ UNKNOWN
283.4412 -1.6142 2.2 18.5 163.8 0.6387 5.2 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
119.600610 363.112100
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.5900 35.1827 5.2 36.5 -113.5 1.3822 2.2 11.6 Her X-1
268.2765 -1.4019 7.1 46.7 -171.7 0.9735 1.6 6.3 SW J1753.5-0127
274.1329 -13.9615 12.8 54.5 173.6 1.1406 0.9 8.7 GX 17+2
288.8037 10.7667 5.5 26.1 167.4 0.7628 2.1 10.7 GRS 1915+105
299.5833 35.0176 0.4 0.1 -24.4 8.0769 29.6 11.0 Cyg X-1
308.1456 40.8279 11.7 9.0 9.3 0.3003 1.0 7.6 Cyg X-3
326.1240 38.1191 3.8 21.5 36.5 0.9396 3.0 12.4 Cyg X-2
307.9984 37.4048 0.7 7.2 30.5 5.0156 16.6 ------ UNKNOWN
313.0502 60.6006 2.2 27.1 -22.6 1.6532 5.2 ------ UNKNOWN
257.5895 -6.9674 3.2 57.6 -165.4 5.1736 3.6 ------ UNKNOWN
22.2301 75.6500 4.2 54.5 -19.6 2.7428 2.8 ------ UNKNOWN
262.7263 28.3929 2.9 31.8 -128.7 1.8650 4.0 ------ UNKNOWN
249.6678 37.2836 2.7 39.9 -108.8 4.2360 4.3 ------ UNKNOWN
Plot creation:
Sat Sep 4 19:31:31 EDT 2021