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
245.1403 -15.7091 0.0116 26.4 80.0 3.8759 16.6 TRIG_01033716
------------------------------------------
Foreground time interval of the image:
-13.799 72.501 (delta_t = 86.300 [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
-106.044000 130.300000
131.000000 135.044000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 6.03357 ( -0.380918 0.388395 )
Norm@50keV : 1.07844E-04 ( -3.25762e-05 4.32374e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 50.83 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 7.04e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 240.4 sec: 0.459029 ( -0.0417164 0.0420828 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.30882e-06 ( -2.74284e-07 2.75982e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-106.044000 130.300000
131.000000 135.044000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.80258 ( )
Epeak [keV] : 0.998237 ( )
Norm@50keV : 0.292496 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared 48.55 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 7.50e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 240.4 sec: 0.447279 ( -0.045244 0.045008 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.19826e-06 ( -3.05789e-07 3.00163e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
-106.044000 130.300000
131.000000 135.044000
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -7.69576 ( 4.19224 7.69576 )
beta : -6.08293 ( -0.351902 0.422741 )
Epeak [keV] : 314.439 ( -314.439 -314.439 )
Norm@50keV : 1.39946E-02 ( -0.00402691 0.00631757 )
------------------------------------------------------------
Photon flux (15-150 keV) in 240.4 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] : 2.64201 (-0.184862 0.208026)
R^2/D10^2 : 143.051 (-64.4061 115.983)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 51.75 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 6.72e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.792e-06 5.393e-07
25- 50 2.553e-07 5.752e-08
50-150 1.365e-10 8.823e-11
15-150 3.047e-06 5.553e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 4.64143 (-0.468975 0.55863)
Norm : 134.532 (-51.9881 85.4238)
------------------------------------------------------------
#Fit statistic : Chi-Squared 48.73 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 7.74e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.848e-06 4.770e-07
25- 50 3.027e-07 7.241e-08
50-150 1.063e-09 6.945e-10
15-150 3.152e-06 4.459e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.13377 (-0.194605 0.215654)
R1^2/D10^2 : 31.0316 (-30.0953 106.136)
kT2 [keV] : 1.62732 (-1.25062 12.6089)
R2^2/D10^2 : 3438.89 (-2920.59 -3063.28)
------------------------------------------------------------
#Fit statistic : Chi-Squared 48.31 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 7.26e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.793e-06 5.470e-07
25- 50 2.548e-07 5.378e-08
50-150 1.297e-08 9.252e-11
15-150 3.061e-06 5.635e-07
Peak spectrum fit
Power-law model
Time interval is from 57.400 sec. to 58.400 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 3.99908 ( -1.03691 1.43029 )
Norm@50keV : 1.60731E-03 ( -0.00160685 0.00241183 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 79.13 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 2.79e-02 with 57 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 0.990367 ( -0.273568 0.274997 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.53799e-08 ( -1.20861e-08 1.48537e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 57.400 sec. to 58.400 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.87057 ( )
Epeak [keV] : 1.23042 ( )
Norm@50keV : 9.81545E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared 79.72 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 2.04e-02 with 56 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 0.978919 ( -0.263785 0.285881 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.55537e-08 ( -1.2437e-08 1.46592e-08 ) ergs/cm2
Band function
Time interval is from 57.400 sec. to 58.400 sec.
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.81674 ( 1.81507 1.81507 )
beta : -3.99674 ( 3.9997 1.03808 )
Epeak [keV] : 1.33551 ( -1.31303 8.24868 )
Norm@50keV : 0.173873 ( -0.194741 2.82434e+07 )
------------------------------------------------------------
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] : 3.38050 (-0.908071 1.18127)
R^2/D10^2 : 64.3755 (-64.3784 383.908)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 80.34 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 2.25e-02 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.435e-08 1.412e-08
25- 50 5.288e-09 3.435e-09
50-150 2.121e-11 2.178e-11
15-150 2.966e-08 1.776e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 7.83434 (-3.2121 6.67529)
Norm : 57.5195 (-57.5174 201.063)
------------------------------------------------------------
#Fit statistic : Chi-Squared 79.79 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 2.48e-02 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.376e-08 1.430e-08
25- 50 7.136e-09 4.814e-09
50-150 2.346e-10 2.533e-10
15-150 3.113e-08 1.826e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.29504 (-0.898691 1.0619)
R1^2/D10^2 : 73.3519 (-38.8786 111.519)
kT2 [keV] : 199.358 (-199.363 -199.363)
R2^2/D10^2 : 1.20388E-04 (-7.77581e-05 0.00494437)
------------------------------------------------------------
#Fit statistic : Chi-Squared 73.39 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 4.94e-02 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.415e-08 1.330e-08
25- 50 6.108e-09 3.311e-09
50-150 3.189e-08 6.565e-09
15-150 6.215e-08 2.147e-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: 5.89472 ( -0.49153 0.522128 )
Norm@50keV : 1.28047E-04 ( -5.21042e-05 7.58135e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 54.14 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 5.83e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 86.3 sec: 0.474195 ( -0.050125 0.0502169 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.23571e-06 ( -1.27286e-07 1.27293e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.30023 ( )
Epeak [keV] : 3.21303 ( )
Norm@50keV : 0.738661 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared 50.30 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 6.89e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 86.3 sec: 0.464296 ( -0.026893 0.052265 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.19384e-06 ( -1.30684e-07 1.29856e-07 ) ergs/cm2
Band function
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -8.41682 ( 6.01143 8.41682 )
beta : -5.96522 ( -0.469642 0.553131 )
Epeak [keV] : 488.945 ( -488.945 -488.945 )
Norm@50keV : 1.62148E-02 ( -0.00630961 0.0111792 )
------------------------------------------------------------
Photon flux (15-150 keV) in 86.3 sec: 0.389825 ( ) 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) = 3.96e-07
S(50-100 keV) = 2.42e-08
T90 vs. Hardness ratio plot
T90 = 216.111999869347 sec.
Hardness ratio (energy fluence ratio) = 0.0611111
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.108932
Count Ratio (50-100 keV) / (15-25 keV) = 4.68387e-05
Mask shadow pattern
IMX = 8.597612163656329E-02, IMY = -4.884915980625017E-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:
-13.799400 72.500600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
245.1216 -15.7018 0.7 26.4 80.0 3.8308 16.4 9.0 Sco X-1
256.0849 -37.9608 17.6 24.1 21.2 0.1099 0.7 8.4 4U 1700-377
256.5691 -36.5460 10.4 22.8 22.9 0.1832 1.1 9.8 GX 349+2
263.1844 -24.7252 3.8 10.7 41.4 0.4898 3.0 9.6 GX 1+4
264.9817 -44.3436 0.0 26.5 0.2 -0.1131 -0.7 12.1 4U 1735-44
268.5452 -1.3375 0.0 17.7 154.5 0.1392 0.9 12.7 SW J1753.5-0127
270.4231 -25.1972 8.4 6.9 4.7 0.2326 1.4 10.3 GX 5-1
270.3562 -25.7583 5.3 7.4 3.8 0.4341 2.6 3.0 GRS 1758-258
274.1522 -14.0881 7.4 4.8 -173.8 0.2303 1.6 9.1 GX 17+2
276.0532 -30.4227 3.8 12.2 -26.3 0.4602 3.0 7.4 H1820-303
284.8946 -24.7571 0.0 12.9 -71.6 0.2304 1.6 12.5 HT1900.1-2455
288.9021 10.7986 4.9 33.5 -162.1 0.4439 2.3 10.7 GRS 1915+105
263.1336 -33.9385 6.5 17.5 15.0 0.2731 1.8 9.5 GX 354-0
271.1766 27.0118 2.7 45.7 166.1 1.5885 4.3 ------ UNKNOWN
255.8734 -48.8713 1.5 33.1 8.2 1.5517 7.6 ------ UNKNOWN
273.3127 -3.9364 3.3 14.7 170.7 0.4947 3.5 ------ UNKNOWN
305.8150 -11.9968 3.5 32.7 -108.9 0.8904 3.3 ------ UNKNOWN
318.1947 -45.3170 2.3 46.1 -56.3 3.1773 4.9 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
122.200620 130.300000
131.000000 463.060000
464.000000 862.370000
863.000000 963.068700
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9902 -15.6421 0.3 0.1 103.9 34.6231 40.7 0.6 Sco X-1
254.4555 35.3440 53.6 51.8 179.9 0.5630 0.2 0.1 Her X-1
255.9776 -37.8368 1.8 24.2 -31.3 5.8472 6.3 0.6 4U 1700-377
256.4907 -36.4755 5.0 23.2 -33.8 2.1674 2.3 4.1 GX 349+2
262.9961 -24.7728 3.9 19.1 -68.5 3.4539 3.0 1.8 GX 1+4
264.5690 -44.3183 0.0 33.1 -35.8 -1.2194 -1.0 10.9 4U 1735-44
268.2853 -1.5812 5.3 26.9 -129.2 2.8516 2.2 9.2 SW J1753.5-0127
270.2291 -25.0998 6.9 25.4 -73.9 2.1316 1.7 3.2 GX 5-1
270.2723 -25.7259 2.6 25.6 -72.6 5.6628 4.5 1.9 GRS 1758-258
274.1604 -14.0196 5.4 28.2 -99.3 2.9365 2.1 9.1 GX 17+2
275.9825 -30.4935 11.4 31.9 -66.7 1.3491 1.0 8.2 H1820-303
284.8672 -24.8206 0.0 38.3 -79.5 2.5108 1.1 11.0 HT1900.1-2455
262.8099 -33.8822 28.2 24.2 -47.9 0.4577 0.4 9.4 GX 354-0
217.2072 19.0793 3.2 44.2 130.9 15.2072 3.6 ------ UNKNOWN
203.2491 -39.5663 4.0 43.5 38.4 8.3090 2.9 ------ UNKNOWN
242.9980 28.3060 2.5 44.0 167.6 8.6797 4.7 ------ UNKNOWN
249.8936 1.0762 2.6 17.4 -173.4 3.7970 4.4 ------ UNKNOWN
246.7681 -29.3374 3.5 13.8 -16.1 2.9216 3.3 ------ UNKNOWN
255.7277 -48.7753 1.3 34.2 -22.4 12.0162 9.2 ------ UNKNOWN
274.4475 -39.6836 2.3 35.1 -50.9 6.3348 5.0 ------ UNKNOWN
273.4856 -67.2857 1.8 54.8 -22.8 18.4617 6.3 ------ UNKNOWN
Plot creation:
Sun Feb 21 15:35:36 EST 2021