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
255.9827 -37.8614 0.0147 2.1 105.4 6.0961 13.1 TRIG_01047857
------------------------------------------
Foreground time interval of the image:
-14.599 373.690 (delta_t = 388.289 [sec])
375.000 408.301 (delta_t = 33.301 [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
-70.656000 -26.290000
-25.000000 373.690000
375.000000 883.984000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.71217 ( -0.102323 0.105032 )
Norm@50keV : 8.41828E-04 ( -5.92163e-05 5.92089e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 64.64 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 2.27e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 952 sec: 0.189409 ( -0.00909376 0.00912078 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.56221e-06 ( -4.14983e-07 4.17551e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-70.656000 -26.290000
-25.000000 373.690000
375.000000 883.984000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.12196 ( -0.706138 0.605845 )
Epeak [keV] : 19.1295 ( -9.61712 4.91962 )
Norm@50keV : 8.48461E-03 ( -0.00497044 0.0156187 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 38.82 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.61e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 952 sec: 0.175730 ( -0.010125 0.010159 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.47648e-06 ( -4.64662e-07 4.92917e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
-70.656000 -26.290000
-25.000000 373.690000
375.000000 883.984000
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.12142 ( -0.352822 0.140694 )
beta : -9.99999 ( 9.99999 3.57092e-05 )
Epeak [keV] : 19.1299 ( -1.64474 4.91396 )
Norm@50keV : 8.49101E-03 ( -0.000383201 0.0156619 )
------------------------------------------------------------
Photon flux (15-150 keV) in 952 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 5.0775e-06 ( -5.07084e-06 -5.48571e-07 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 7.10410 (-0.335037 0.351819)
R^2/D10^2 : 0.309161 (-0.0606574 0.0758762)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 69.02 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.32e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.422e-06 1.952e-07
25- 50 3.413e-06 1.723e-07
50-150 5.965e-07 1.001e-07
15-150 6.432e-06 3.237e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 26.4647 (-2.52671 2.89566)
Norm : 1.64721 (-0.184141 0.210858)
------------------------------------------------------------
#Fit statistic : Chi-Squared 39.06 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.67e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.976e-06 1.942e-07
25- 50 3.161e-06 1.552e-07
50-150 1.459e-06 2.390e-07
15-150 7.597e-06 3.689e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.45944 (-0.883129 0.701569)
R1^2/D10^2 : 0.778044 (-0.278323 0.653665)
kT2 [keV] : 14.0659 (-3.54037 5.79212)
R2^2/D10^2 : 7.51483E-03 (-0.0060025 0.0267488)
------------------------------------------------------------
#Fit statistic : Chi-Squared 35.86 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.79e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.827e-06 4.593e-07
25- 50 3.155e-06 6.531e-07
50-150 1.583e-06 7.586e-07
15-150 7.565e-06 1.742e-06
Peak spectrum fit
Power-law model
Time interval is from -69.280 sec. to -68.280 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.04237 ( -0.695089 0.93341 )
Norm@50keV : 3.53716E-03 ( -0.00353721 0.00184321 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 40.67 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.50e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 0.541181 ( -0.222785 0.222784 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.27026e-08 ( -1.58158e-08 1.70214e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -69.280 sec. to -68.280 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.918420 ( -4.95579 1.67571 )
Epeak [keV] : 42.1049 ( -42.1362 -42.1362 )
Norm@50keV : 1.52479E-02 ( -0.0151978 5.1819 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 40.24 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.44e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 0.530048 ( -0.221961 0.224376 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.09082e-08 ( -1.4627e-08 1.72767e-08 ) ergs/cm2
Band function
Time interval is from -69.280 sec. to -68.280 sec.
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.934524 ( -1.06121 4.83766 )
beta : -9.36574 ( 9.37129 19.3713 )
Epeak [keV] : 43.1287 ( -33.0445 -42.9598 )
Norm@50keV : 1.46493E-02 ( -0.0145599 1.61157e+06 )
------------------------------------------------------------
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] : 11.6130 (-5.17535 6.31935)
R^2/D10^2 : 0.150772 (-0.150505 1.19517)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 41.24 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.42e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.286e-09 2.834e-09
25- 50 1.297e-08 8.375e-09
50-150 1.028e-08 7.635e-09
15-150 2.754e-08 1.942e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 63.3133 (-63.3206 -63.3206)
Norm : 2.82209 (-1.35733 2.9663)
------------------------------------------------------------
#Fit statistic : Chi-Squared 40.29 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.54e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.151e-09 4.569e-09
25- 50 1.106e-08 6.990e-09
50-150 1.315e-08 1.142e-08
15-150 3.136e-08 2.384e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.29191 (-3.25689 19.6264)
R1^2/D10^2 : 13.4325 (-13.8231 -13.8231)
kT2 [keV] : 14.1017 (-5.5546 -14.0538)
R2^2/D10^2 : 6.34974E-02 (-0.0642034 0.476623)
------------------------------------------------------------
#Fit statistic : Chi-Squared 39.51 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.43e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.036e-09 3.730e-09
25- 50 1.086e-08 6.880e-09
50-150 1.313e-08 8.885e-09
15-150 3.102e-08 1.819e-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: 2.79128 ( -0.163824 0.172592 )
Norm@50keV : 5.77445E-04 ( -7.34998e-05 7.43496e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 73.72 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 6.74e-02 with 57 degrees of freedom
Photon flux (15-150 keV) in 421.6 sec: 0.137044 ( -0.00985945 0.00986451 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.67808e-06 ( -2.19676e-07 2.2417e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.836397 ( -1.2914 1.00643 )
Epeak [keV] : 19.0543 ( -13.7181 5.24704 )
Norm@50keV : 1.14990E-02 ( -0.011656 0.0770167 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 60.19 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.27e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 421.6 sec: 0.129150 ( -0.010324 0.010382 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.32143e-06 ( -2.12432e-07 2.34296e-07 ) ergs/cm2
Band function
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.358882 ( -0.948376 2.55537 )
beta : -3.82912 ( 3.83252 0.686821 )
Epeak [keV] : 20.6220 ( -9.10121 3.90829 )
Norm@50keV : 2.58843E-02 ( -0.029076 2.44035 )
------------------------------------------------------------
Photon flux (15-150 keV) in 421.6 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) = 2.88e-06
S(50-100 keV) = 1.76e-06
T90 vs. Hardness ratio plot
T90 = 451.507999897003 sec.
Hardness ratio (energy fluence ratio) = 0.611111
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.785547
Count Ratio (50-100 keV) / (15-25 keV) = 0.193504
Mask shadow pattern
IMX = -9.572132646437937E-03, IMY = -3.463341983893006E-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:
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-14.599400 373.690000
375.000000 408.300600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.1950 -60.6893 5.0 54.9 -7.9 -4.0895 -2.3 5.3 Cen X-3
186.9897 -62.7670 16.6 46.7 -8.3 0.6538 0.7 9.1 GX 301-2
244.9721 -15.6435 0.8 26.3 107.8 10.5963 15.2 0.5 Sco X-1
255.9827 -37.8614 0.9 2.1 105.5 6.0954 13.2 1.1 4U 1700-377
256.4883 -36.2540 6.1 3.5 124.7 0.9029 1.9 10.5 GX 349+2
262.9782 -24.7396 4.0 15.7 154.9 1.3465 2.9 1.7 GX 1+4
264.6260 -44.3992 5.9 7.2 -91.2 0.9519 2.0 5.9 4U 1735-44
268.3644 -1.6254 0.0 39.3 153.0 1.3338 1.3 10.4 SW J1753.5-0127
270.3192 -25.0970 3.2 18.2 176.2 1.7315 3.6 2.2 GX 5-1
270.2908 -25.8189 3.0 17.6 177.5 1.9044 3.9 4.6 GRS 1758-258
273.9900 -14.0197 317.8 29.5 169.8 0.0211 0.0 1.4 GX 17+2
275.9245 -30.3668 19.8 17.8 -160.3 0.2833 0.6 0.0 H1820-303
284.9601 -24.7579 6.6 27.6 -159.0 -1.0147 -1.7 10.6 HT1900.1-2455
263.0759 -33.9783 7.5 7.3 176.4 -0.6742 -1.5 9.6 GX 354-0
215.3698 -50.8622 2.9 31.1 10.2 2.5210 4.1 ------ UNKNOWN
181.1426 -52.7832 3.2 51.7 3.8 4.8360 3.7 ------ UNKNOWN
270.7449 -29.8446 2.5 14.8 -172.2 2.2769 4.6 ------ UNKNOWN
221.7716 -66.8478 2.9 33.6 -20.2 2.3808 4.0 ------ UNKNOWN
128.6489 -89.7334 3.3 50.5 -44.4 8.1282 3.6 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
472.300590 963.040000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9749 -15.6625 0.7 28.4 87.2 14.6646 16.3 1.4 Sco X-1
254.3598 35.3219 4.4 54.9 160.3 -7.3371 -2.6 4.9 Her X-1
255.9802 -37.8545 0.5 27.2 33.8 16.4333 21.5 0.7 4U 1700-377
256.3672 -36.2651 9.4 25.8 35.7 0.8428 1.2 10.0 GX 349+2
262.9388 -24.7275 3.2 13.8 50.2 2.1353 3.6 4.0 GX 1+4
264.7140 -44.4418 7.9 29.5 14.7 1.1364 1.4 1.3 4U 1735-44
268.3148 -1.6019 7.1 15.8 156.9 0.9766 1.6 9.5 SW J1753.5-0127
270.2925 -25.0359 3.3 9.7 23.7 2.0672 3.5 2.6 GX 5-1
270.2229 -25.7579 7.3 10.4 22.4 0.9620 1.6 4.4 GRS 1758-258
274.1610 -14.1857 0.0 2.0 170.0 1.1444 2.1 12.7 GX 17+2
275.7596 -30.5189 42.2 14.4 -3.9 -0.1797 -0.3 12.5 H1820-303
285.0377 -24.9152 9.7 13.2 -46.2 -0.6989 -1.2 0.3 HT1900.1-2455
288.9236 11.0859 0.0 30.7 -151.1 0.6767 0.8 11.2 GRS 1915+105
299.6391 35.1920 5.9 56.6 -155.1 6.9121 1.9 2.5 Cyg X-1
262.8263 -33.6890 62.4 20.5 29.2 -0.1155 -0.2 11.9 GX 354-0
245.6962 -59.4632 2.6 48.2 19.6 7.0313 4.4 ------ UNKNOWN
264.3818 -36.4389 2.6 22.2 22.4 2.5860 4.4 ------ UNKNOWN
313.9832 -68.1537 3.6 57.7 -15.9 8.3824 3.3 ------ UNKNOWN
296.0899 34.2566 2.6 54.4 -157.7 8.1199 4.4 ------ UNKNOWN
307.1510 29.3816 5.4 55.4 -144.8 9.0453 2.2 ------ UNKNOWN
324.4858 -44.5975 4.2 50.6 -44.5 8.4220 2.7 ------ UNKNOWN
UNKNOWN
Plot creation:
Tue May 11 19:40:08 EDT 2021