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
244.9253 -15.4749 0.0212 29.7 173.1 1.6988 9.1 TRIG_01192088
------------------------------------------
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: 5.42219 ( -0.547484 0.598988 )
Norm@50keV : 1.37432E-04 ( -6.2171e-05 9.29943e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 73.29 using 59 PHA bins.
# Reduced chi-squared = 1.286 for 57 degrees of freedom
# Null hypothesis probability = 7.193192e-02
Photon flux (15-150 keV) in 64 sec: 0.318915 ( -0.0366493 0.0366714 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.33562e-07 ( -7.36845e-08 7.40218e-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 : 2.45289E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 230.17 using 59 PHA bins.
# Reduced chi-squared = 4.1102 for 56 degrees of freedom
# Null hypothesis probability = 5.545570e-23
Photon flux (15-150 keV) in 64 sec: 0.314168 ( -0.037681 0.03733 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.12968e-07 ( -7.32224e-08 7.52749e-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 : -1.86003 ( 1.61829 1.61829 )
beta : -10.0000 ( 10 10 )
Epeak [keV] : 0.832649 ( -0.149652 7.06742 )
Norm@50keV : 0.111765 ( -0.0573624 0.0902911 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 72.29 using 59 PHA bins.
# Reduced chi-squared = 1.314 for 55 degrees of freedom
# Null hypothesis probability = 5.892704e-02
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] : 2.80800 (-0.310571 0.356674)
R^2/D10^2 : 67.4693 (-37.9288 91.5193)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 73.90 using 59 PHA bins.
# Reduced chi-squared = 1.297 for 57 degrees of freedom
# Null hypothesis probability = 6.551756e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.289e-07 1.336e-07
25- 50 6.084e-08 2.404e-08
50-150 5.621e-11 5.118e-11
15-150 5.898e-07 1.678e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 5.29031 (-0.872164 1.11648)
Norm : 59.0958 (-28.336 59.5616)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.295e-07 1.561e-07
25- 50 7.584e-08 2.960e-08
50-150 5.187e-10 4.456e-10
15-150 6.059e-07 1.705e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.15960 (-0.310508 0.356737)
R1^2/D10^2 : 27.2516 (-37.9297 91.5061)
kT2 [keV] : 1.08705 (-1.35043 1.60082)
R2^2/D10^2 : 1.31854E+05 (-138385 5.44444e+08)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 0.000e+00 0.000e+00
25- 50 0.000e+00 0.000e+00
50-150 0.000e+00 0.000e+00
15-150 0.000e+00 0.000e+00
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: 5.42219 ( -0.547484 0.598988 )
Norm@50keV : 1.37432E-04 ( -6.2171e-05 9.29943e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 73.29 using 59 PHA bins.
# Reduced chi-squared = 1.286 for 57 degrees of freedom
# Null hypothesis probability = 7.193192e-02
Photon flux (15-150 keV) in 64 sec: 0.318915 ( -0.0366493 0.0366714 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.33562e-07 ( -7.36845e-08 7.40218e-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 : 2.45289E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 230.17 using 59 PHA bins.
# Reduced chi-squared = 4.1102 for 56 degrees of freedom
# Null hypothesis probability = 5.545570e-23
Photon flux (15-150 keV) in 64 sec: 0.314168 ( -0.037681 0.03733 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.12968e-07 ( -7.32224e-08 7.52749e-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 : -1.86003 ( 1.61829 1.61829 )
beta : -10.0000 ( 10 10 )
Epeak [keV] : 0.832649 ( -0.149652 7.06743 )
Norm@50keV : 0.111765 ( -0.0573624 0.0902911 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 72.29 using 59 PHA bins.
# Reduced chi-squared = 1.314 for 55 degrees of freedom
# Null hypothesis probability = 5.892704e-02
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] : 2.80800 (-0.310571 0.356674)
R^2/D10^2 : 67.4693 (-37.9288 91.5193)
(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 5.289e-07 1.683e-07
25- 50 6.084e-08 2.566e-08
50-150 5.621e-11 4.984e-11
15-150 5.898e-07 1.778e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 5.29031 (-0.872164 1.11648)
Norm : 59.0958 (-28.336 59.5616)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.295e-07 1.393e-07
25- 50 7.584e-08 2.834e-08
50-150 5.187e-10 4.369e-10
15-150 6.059e-07 1.580e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.15960 (-0.310508 0.356737)
R1^2/D10^2 : 27.2516 (-37.9297 91.5061)
kT2 [keV] : 1.08705 (-1.35043 1.60082)
R2^2/D10^2 : 1.31854E+05 (-138385 5.44446e+08)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 0.000e+00 0.000e+00
25- 50 0.000e+00 0.000e+00
50-150 0.000e+00 0.000e+00
15-150 0.000e+00 0.000e+00
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: 5.42219 ( -0.547484 0.598988 )
Norm@50keV : 1.37432E-04 ( -6.2171e-05 9.29943e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 73.29 using 59 PHA bins.
# Reduced chi-squared = 1.286 for 57 degrees of freedom
# Null hypothesis probability = 7.193192e-02
Photon flux (15-150 keV) in 64 sec: 0.318915 ( -0.0366493 0.0366714 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.33562e-07 ( -7.36845e-08 7.40218e-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 : 2.45289E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 230.17 using 59 PHA bins.
# Reduced chi-squared = 4.1102 for 56 degrees of freedom
# Null hypothesis probability = 5.545570e-23
Photon flux (15-150 keV) in 64 sec: 0.314168 ( -0.037681 0.03733 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.12968e-07 ( -7.32224e-08 7.52749e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.86003 ( 1.61829 1.61829 )
beta : -10.0000 ( 10 10 )
Epeak [keV] : 0.832649 ( -0.149652 7.06731 )
Norm@50keV : 0.111765 ( -0.0573624 0.0902911 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 72.29 using 59 PHA bins.
# Reduced chi-squared = 1.314 for 55 degrees of freedom
# Null hypothesis probability = 5.892704e-02
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) = 1.00e-07
S(50-100 keV) = 9.33e-09
T90 vs. Hardness ratio plot
T90 = 64 sec.
Hardness ratio (energy fluence ratio) = 0.0933
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.154111
Count Ratio (50-100 keV) / (15-25 keV) = -0.0523813
Mask shadow pattern
IMX = -5.673382447604385E-01, IMY = -6.831448904918766E-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:
0.000000 64.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9245 -15.4883 1.3 29.8 173.1 1.7053 9.1 9.7 Sco X-1
254.3091 35.5135 0.0 23.6 20.4 0.0723 0.4 12.6 Her X-1
255.9902 -37.7931 10.7 53.4 164.1 0.7925 1.1 3.1 4U 1700-377
256.4927 -36.4953 4.9 52.3 163.2 1.6558 2.3 5.1 GX 349+2
262.9688 -24.6078 4.1 43.4 150.0 -1.2984 -2.8 8.6 GX 1+4
268.5091 -1.4509 28.2 29.7 116.6 0.1144 0.4 8.5 SW J1753.5-0127
270.3272 -25.0681 5.2 47.5 142.5 -1.5184 -2.2 2.4 GX 5-1
270.4670 -25.6202 6.8 48.0 142.8 1.2344 1.7 11.6 GRS 1758-258
273.8618 -14.0393 6.4 41.6 128.3 -1.0249 -1.8 8.4 GX 17+2
262.8560 -33.8537 22.0 51.7 155.8 -0.3846 -0.5 6.7 GX 354-0
261.8723 -16.0774 0.5 35.6 144.6 7.9389 25.5 ------ UNKNOWN
265.3236 44.5999 3.0 35.8 24.4 1.0222 3.9 ------ UNKNOWN
250.4241 -0.6974 2.9 16.6 150.0 0.6418 4.0 ------ UNKNOWN
228.1709 -10.1498 2.9 28.5 -151.2 0.7405 4.0 ------ UNKNOWN
226.9907 -22.2505 3.8 39.7 -159.6 0.6842 3.1 ------ UNKNOWN
224.7599 57.9300 2.5 45.8 -16.5 1.3917 4.6 ------ UNKNOWN
207.6926 -29.2217 4.2 55.2 -145.2 2.1712 2.8 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
139.900590 243.094000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9864 -15.6471 1.1 0.1 -164.5 3.1994 10.5 0.6 Sco X-1
254.3461 35.3630 20.4 51.7 2.0 0.4372 0.6 5.6 Her X-1
256.0201 -37.6974 3.6 24.1 150.6 1.0816 3.2 8.9 4U 1700-377
256.4915 -36.5702 18.5 23.3 148.4 -0.2055 -0.6 9.2 GX 349+2
262.8476 -24.6976 7.5 19.0 113.7 -0.5494 -1.5 9.3 GX 1+4
264.5691 -44.6094 7.2 33.4 146.6 0.7493 1.6 12.1 4U 1735-44
268.5116 -1.4946 12.3 27.1 53.2 -0.3868 -0.9 9.0 SW J1753.5-0127
270.2585 -24.9450 33.7 25.4 107.9 -0.1465 -0.3 8.2 GX 5-1
270.1379 -25.7227 7.3 25.5 109.7 -0.6406 -1.6 9.0 GRS 1758-258
273.8641 -14.1665 9.2 27.9 83.2 0.5960 1.3 11.4 GX 17+2
275.9780 -30.4933 8.8 32.0 115.5 -0.7207 -1.3 8.1 H1820-303
285.1912 -24.9649 11.9 38.7 102.9 0.8100 1.0 8.9 HT1900.1-2455
263.1209 -33.8134 6.5 24.5 133.7 0.6392 1.8 6.7 GX 354-0
271.3322 -67.0942 2.5 54.3 160.0 5.7945 4.5 ------ UNKNOWN
265.3434 2.5717 3.0 27.1 41.9 1.4501 3.9 ------ UNKNOWN
261.9482 -16.2186 0.3 16.3 86.8 12.8313 39.3 ------ UNKNOWN
195.3913 -33.5179 3.0 48.0 -129.1 4.7667 3.9 ------ UNKNOWN
Plot creation:
Fri Sep 15 18:57:17 EDT 2023