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
264.2283 -35.8217 0.0024 18.5 16.9 14.4538 80.7 TRIG_01037335
------------------------------------------
Foreground time interval of the image:
-9.004 10.717 (delta_t = 19.721 [sec])
Background time interval of the image:
-59.483 -9.004 (delta_t = 50.479 [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
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 -9.004 sec. to 19.424 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.31127 ( -0.0319835 0.0319051 )
Norm@50keV : 3.76530E-02 ( -0.00063352 0.000633066 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 47.04 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 8.24e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 28.43 sec: 4.50156 ( -0.0853999 0.0856343 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.05495e-05 ( -1.79186e-07 1.79282e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -9.004 sec. to 19.424 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.09804 ( -0.135126 0.13126 )
Epeak [keV] : 250.150 ( -73.5614 284.139 )
Norm@50keV : 4.63594E-02 ( -0.00544947 0.00635265 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 39.28 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.56e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 28.43 sec: 4.42507 ( -0.09587 0.09634 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.04301e-05 ( -1.95854e-07 1.94746e-07 ) ergs/cm2
Band function
Time interval is from -9.004 sec. to 19.424 sec.
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.639363 ( -0.444279 5.56866 )
beta : -1.39221 ( -0.071518 0.0729868 )
Epeak [keV] : 86.6740 ( -53.172 126.697 )
Norm@50keV : 8.55077E-02 ( -0.0398528 2.49455 )
------------------------------------------------------------
Photon flux (15-150 keV) in 28.43 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] : 19.6763 ( )
R^2/D10^2 : 0.205497 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 625.27 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.32e-96 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.388e-07 1.507e-08
25- 50 2.162e-06 5.231e-08
50-150 6.191e-06 1.578e-07
15-150 8.791e-06 1.649e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.363 ( )
Norm : 19.3119 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared 254.29 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.91e-27 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.367e-06 2.715e-08
25- 50 2.630e-06 4.847e-08
50-150 5.768e-06 1.166e-07
15-150 9.765e-06 1.820e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.91339 (-0.674305 0.717255)
R1^2/D10^2 : 1.76851 (-0.368733 0.498379)
kT2 [keV] : 33.5109 (-2.57446 3.33376)
R2^2/D10^2 : 2.83306E-02 (-0.00769127 0.0089967)
------------------------------------------------------------
#Fit statistic : Chi-Squared 48.57 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 7.17e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.056e-07 5.658e-08
25- 50 2.469e-06 8.302e-08
50-150 6.996e-06 2.800e-07
15-150 1.037e-05 3.440e-07
Peak spectrum fit
Power-law model
Time interval is from 2.700 sec. to 3.700 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.988912 ( -0.050778 0.050513 )
Norm@50keV : 0.127433 ( -0.00380166 0.00379981 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 86.98 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 6.44e-03 with 57 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 14.6644 ( -0.444294 0.442869 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.38366e-06 ( -4.55538e-08 4.51739e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 2.700 sec. to 3.700 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.358867 ( -0.229397 0.218014 )
Epeak [keV] : 148.078 ( -24.9772 47.4234 )
Norm@50keV : 0.244788 ( -0.0482325 0.0633851 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 60.35 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.22e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 14.3253 ( -0.4571 0.4571 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.34204e-06 ( 0 0 ) ergs/cm2
Band function
Time interval is from 2.700 sec. to 3.700 sec.
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.99997 ( -3.57543e-05 -4.99997 )
beta : -1.15077 ( -0.0821327 0.0646103 )
Epeak [keV] : 35.2372 ( -3.08737 2.34309 )
Norm@50keV : 1217.09 ( -35.8023 824.883 )
------------------------------------------------------------
Photon flux (15-150 keV) in 1 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] : 21.3017 ( )
R^2/D10^2 : 0.591895 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 174.69 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 7.13e-14 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.043e-08 2.950e-09
25- 50 2.615e-07 1.075e-08
50-150 8.854e-07 4.665e-08
15-150 1.197e-06 4.600e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.363 ( )
Norm : 58.6796 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared 391.09 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 2.47e-51 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.461e-07 4.500e-09
25- 50 2.811e-07 9.700e-09
50-150 6.165e-07 2.020e-08
15-150 1.044e-06 3.350e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 10.9624 (-1.5211 1.66439)
R1^2/D10^2 : 2.60352 (-0.716833 1.13201)
kT2 [keV] : 38.1983 (-5.95999 11.1826)
R2^2/D10^2 : 7.35954E-02 (-0.0401844 0.0565947)
------------------------------------------------------------
#Fit statistic : Chi-Squared 51.35 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 6.15e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.965e-08 8.615e-09
25- 50 2.802e-07 3.060e-08
50-150 9.932e-07 1.973e-07
15-150 1.353e-06 1.893e-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: 1.23389 ( -0.0309355 0.0308424 )
Norm@50keV : 4.88498E-02 ( -0.000818636 0.000817901 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 61.09 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.31e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 19.72 sec: 5.76283 ( -0.106316 0.10656 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.6823e-06 ( -1.63379e-07 1.63449e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.919812 ( -0.133536 0.12979 )
Epeak [keV] : 205.339 ( -43.2683 98.3377 )
Norm@50keV : 6.62276E-02 ( -0.00764999 0.00888589 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 43.48 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 8.89e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 19.72 sec: 5.63398 ( -0.11672 0.11721 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.53866e-06 ( -1.75863e-07 1.74995e-07 ) ergs/cm2
Band function
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.362872 ( -0.481151 3.35994 )
beta : -1.34820 ( -0.102492 0.074795 )
Epeak [keV] : 82.4463 ( -46.1494 76.0547 )
Norm@50keV : 0.139087 ( -0.0689384 38.9287 )
------------------------------------------------------------
Photon flux (15-150 keV) in 19.72 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) = 2.36e-06
S(50-100 keV) = 3.81e-06
T90 vs. Hardness ratio plot
T90 = 14.7639999389648 sec.
Hardness ratio (energy fluence ratio) = 1.61441
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.61531
Count Ratio (50-100 keV) / (15-25 keV) = 1.38625
Mask shadow pattern
IMX = 3.206476818201124E-01, IMY = -9.714380641279256E-02
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:
-59.483410 -9.004000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9851 -15.6289 1.0 26.7 87.2 2.2916 11.3 0.8 Sco X-1
255.9143 -37.8733 3.3 24.0 28.8 0.5495 3.5 3.8 4U 1700-377
256.5813 -36.5023 3.7 22.6 30.2 -0.4500 -3.1 8.5 GX 349+2
263.1564 -24.8023 5.5 10.7 49.4 0.2895 2.1 8.7 GX 1+4
264.5399 -44.5047 10.6 26.5 7.8 0.1736 1.1 9.3 4U 1735-44
268.5095 -1.4785 5.5 17.9 160.5 0.2830 2.1 8.6 SW J1753.5-0127
270.1429 -24.9137 4.1 6.5 16.2 0.3826 2.8 12.6 GX 5-1
270.1424 -25.8358 6.5 7.4 13.5 0.2436 1.8 10.3 GRS 1758-258
273.9709 -13.9304 3.0 5.1 -172.4 0.5217 3.9 6.7 GX 17+2
275.8914 -30.3611 5.9 11.8 -18.7 0.2688 1.9 1.8 H1820-303
285.2046 -24.7745 0.0 12.9 -66.2 -0.2842 -1.9 12.7 HT1900.1-2455
288.7069 10.8103 6.4 33.6 -156.3 0.3249 1.8 9.7 GRS 1915+105
262.8189 -33.8135 6.1 17.4 23.4 0.2669 1.9 8.6 GX 354-0
229.4600 -24.8768 2.5 40.5 68.1 2.3379 4.7 ------ UNKNOWN
253.9454 -47.0957 2.0 32.1 19.0 1.1064 5.8 ------ UNKNOWN
287.1890 31.2538 2.8 52.0 -169.8 1.6631 4.2 ------ UNKNOWN
305.6044 -73.6594 3.5 57.7 -15.8 1.9774 3.4 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-9.004000 10.716590
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
245.0800 -15.5264 4.7 26.6 87.5 -0.6617 -2.4 9.0 Sco X-1
256.0690 -37.8352 4.2 23.9 28.7 -0.5678 -2.7 3.9 4U 1700-377
256.5390 -36.5178 4.3 22.7 30.2 0.5510 2.7 7.6 GX 349+2
262.8513 -24.8717 14.2 11.0 49.8 0.1478 0.8 11.5 GX 1+4
264.8959 -44.6226 0.0 26.5 7.2 -0.1051 -0.5 12.2 4U 1735-44
268.2420 -1.5906 7.5 17.9 159.6 -0.2988 -1.5 11.2 SW J1753.5-0127
270.4573 -24.9461 6.9 6.4 13.8 0.3007 1.7 12.3 GX 5-1
270.4848 -25.6108 0.0 7.0 11.7 -0.4695 -2.7 12.7 GRS 1758-258
274.1570 -14.0749 10.9 5.0 -170.0 0.1948 1.1 9.1 GX 17+2
275.9125 -30.2168 7.1 11.7 -19.0 -0.2989 -1.6 9.0 H1820-303
284.8687 -25.0108 8.7 12.8 -64.7 -0.2620 -1.3 10.6 HT1900.1-2455
288.6666 10.8983 7.2 33.7 -156.5 0.3754 1.6 8.3 GRS 1915+105
262.9717 -33.9836 5.7 17.4 22.7 0.3632 2.0 9.0 GX 354-0
229.5196 -28.0080 2.1 40.5 63.2 3.8283 5.5 ------ UNKNOWN
268.6029 36.8349 2.6 55.9 170.5 4.2354 4.4 ------ UNKNOWN
264.2283 -35.8217 0.1 18.5 16.9 14.4538 81.5 ------ UNKNOWN
291.5270 22.3592 2.8 45.1 -160.7 1.3100 4.2 ------ UNKNOWN
304.3554 -5.0115 2.9 33.8 -115.7 1.2582 4.0 ------ UNKNOWN
318.0240 -67.1917 2.6 56.2 -24.8 3.5775 4.4 ------ UNKNOWN
304.7211 28.6374 3.5 56.7 -151.7 3.7193 3.3 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
51.516610 962.526000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9764 -15.6469 0.5 26.5 131.9 40.0270 22.2 0.4 Sco X-1
255.9765 -37.8014 3.6 6.9 68.2 3.8243 3.2 2.6 4U 1700-377
256.4569 -36.3960 2.8 6.3 79.8 4.7661 4.1 1.9 GX 349+2
262.9332 -24.6905 2.6 11.2 171.2 5.1209 4.4 5.3 GX 1+4
264.8361 -44.3026 4.1 8.5 -5.6 4.1969 2.8 9.7 4U 1735-44
268.2431 -1.5980 0.0 34.4 -175.6 -0.2030 -0.1 11.5 SW J1753.5-0127
270.2335 -25.1123 2.1 11.9 -155.4 7.5989 5.5 3.4 GX 5-1
270.3073 -25.7245 3.9 11.4 -153.8 4.2421 3.2 1.1 GRS 1758-258
273.9407 -14.0113 3.5 23.5 -158.5 4.5402 3.3 4.1 GX 17+2
275.7424 -30.2568 11.1 11.1 -119.5 1.3125 1.0 11.5 H1820-303
285.0324 -25.0642 93.3 20.8 -118.0 0.2337 0.1 8.6 HT1900.1-2455
288.6571 11.0434 6.4 52.2 -151.8 -6.6602 -1.8 10.2 GRS 1915+105
263.1249 -33.9898 3.6 2.0 150.4 3.6170 3.2 11.5 GX 354-0
222.2082 -17.4078 2.9 41.4 102.4 14.8546 4.0 ------ UNKNOWN
217.1611 -31.7471 2.5 39.0 79.3 18.6155 4.5 ------ UNKNOWN
196.2177 -61.4948 4.1 48.8 33.3 13.4931 2.8 ------ UNKNOWN
248.4398 11.2523 2.4 49.4 156.7 17.2997 4.7 ------ UNKNOWN
180.1193 -74.2845 3.5 54.1 16.7 21.8144 3.3 ------ UNKNOWN
234.4488 -49.9469 3.5 25.7 44.7 5.2339 3.3 ------ UNKNOWN
238.1547 -42.8155 3.1 21.3 60.1 4.8738 3.7 ------ UNKNOWN
255.7083 -48.7481 0.9 14.4 20.5 15.3930 12.6 ------ UNKNOWN
UNKNOWN
UNKNOWN
UNKNOWN
UNKNOWN
Plot creation:
Fri Mar 19 14:20:29 EDT 2021