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
245.2143 -15.6255 0.0090 19.7 167.5 4.0578 21.2 TRIG_01209631
------------------------------------------
Foreground time interval of the image:
-13.899 73.801 (delta_t = 87.700 [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
-66.960000 75.680000
97.000000 184.130000
185.000000 185.340000
187.000000 194.755500
198.000000 205.770000
207.000000 221.190000
226.000000 239.740000
241.000000 248.850000
251.000000 315.100000
316.000000 317.288000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 6.30137 ( -0.274165 0.274598 )
Norm@50keV : 9.57165E-05 ( -2.06748e-05 2.51048e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.27 using 59 PHA bins.
# Reduced chi-squared = 0.8644 for 57 degrees of freedom
# Null hypothesis probability = 7.568435e-01
Photon flux (15-150 keV) in 346.8 sec: 0.534030 ( -0.041994 0.0424238 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.48468e-06 ( -3.9479e-07 3.983e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-66.960000 75.680000
97.000000 184.130000
185.000000 185.340000
187.000000 194.755500
198.000000 205.770000
207.000000 221.190000
226.000000 239.740000
241.000000 248.850000
251.000000 315.100000
316.000000 317.288000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 1.59547E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 606.85 using 59 PHA bins.
# Reduced chi-squared = 10.837 for 56 degrees of freedom
# Null hypothesis probability = 1.746534e-93
Photon flux (15-150 keV) in 346.8 sec: 0.497302 ( -0.050765 0.049585 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.1101e-06 ( -4.74353e-07 4.63151e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
-66.960000 75.680000
97.000000 184.130000
185.000000 185.340000
187.000000 194.755500
198.000000 205.770000
207.000000 221.190000
226.000000 239.740000
241.000000 248.850000
251.000000 315.100000
316.000000 317.288000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.60226 ( )
beta : -8.57405 ( )
Epeak [keV] : 4.03045 ( )
Norm@50keV : 2.89392E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 189.28 using 59 PHA bins.
# Reduced chi-squared = 3.4414 for 55 degrees of freedom
# Null hypothesis probability = 1.217476e-16
Photon flux (15-150 keV) in 346.8 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] : 2.63158 (-0.127685 0.13977)
R^2/D10^2 : 168.928 (-59.5069 89.8951)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 30.32 using 59 PHA bins.
# Reduced chi-squared = 0.5318 for 57 degrees of freedom
# Null hypothesis probability = 9.985823e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.627e-06 6.052e-07
25- 50 4.167e-07 6.341e-08
50-150 2.148e-10 1.088e-10
15-150 5.044e-06 6.260e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 4.48447 (-0.311043 0.353792)
Norm : 178.821 (-54.0688 76.5398)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.787e-06 5.271e-07
25- 50 4.679e-07 5.688e-08
50-150 1.360e-09 6.535e-10
15-150 5.256e-06 5.531e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 0.901993 (-2.00189 8.00743)
R1^2/D10^2 : 1.09297E+06 (-1.27803e+06 3.6667e+07)
kT2 [keV] : 2.67817 (-0.158085 39.4278)
R2^2/D10^2 : 144.132 (-144.706 100.443)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.619e-06 6.913e-05
25- 50 4.329e-07 2.457e-05
50-150 3.526e-10 8.455e-06
15-150 5.052e-06 2.688e-04
Peak spectrum fit
Power-law model
Time interval is from -33.780 sec. to -32.780 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 3.05405 ( -0.611174 0.849771 )
Norm@50keV : 2.69906E-03 ( -0.00147536 0.00161199 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.98 using 59 PHA bins.
# Reduced chi-squared = 1.175 for 57 degrees of freedom
# Null hypothesis probability = 1.718291e-01
Photon flux (15-150 keV) in 1 sec: 0.772216 ( -0.171234 0.171528 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.3262e-08 ( -9.63986e-09 1.07145e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -33.780 sec. to -32.780 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.97117 ( -1.19883 0.0207913 )
Epeak [keV] : 0.949869 ( -0.676995 20.3186 )
Norm@50keV : 1.30427E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.30 using 59 PHA bins.
# Reduced chi-squared = 1.220 for 56 degrees of freedom
# Null hypothesis probability = 1.253364e-01
Photon flux (15-150 keV) in 1 sec: 0.771265 ( -0.171215 0.170288 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.29286e-08 ( -9.4077e-09 1.10656e-08 ) ergs/cm2
Band function
Time interval is from -33.780 sec. to -32.780 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -10.00000 ( 10 10 )
beta : -3.05410 ( -0.850089 0.610623 )
Epeak [keV] : 1.07206 ( -1.07206 -1.07206 )
Norm@50keV : 0.366825 ( -0.200522 0.219093 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.98 using 59 PHA bins.
# Reduced chi-squared = 1.218 for 55 degrees of freedom
# Null hypothesis probability = 1.289813e-01
Photon flux (15-150 keV) in 1 sec: 0.771669 ( 6.22833 -0.170903 ) 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] : 4.64332 (-1.44882 2.35604)
R^2/D10^2 : 8.51925 (-8.67873 53.2548)
(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 1.526e-08 9.175e-09
25- 50 8.267e-09 5.225e-09
50-150 2.319e-10 2.261e-10
15-150 2.376e-08 1.413e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 19.4077 (-9.71177 19.0037)
Norm : 9.44985 (-4.7464 16.532)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.428e-08 5.832e-09
25- 50 1.222e-08 6.222e-09
50-150 3.477e-09 2.718e-09
15-150 2.997e-08 1.225e-08
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.65275 (-1.20685 1.45286)
R1^2/D10^2 : 141.897 (-131.293 16005.1)
kT2 [keV] : 11.7598 (-4.62642 8.56469)
R2^2/D10^2 : 0.110455 (-0.0998572 0.49735)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.507e-08 8.025e-09
25- 50 1.101e-08 6.630e-09
50-150 8.126e-09 5.470e-09
15-150 3.421e-08 1.794e-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: 5.98281 ( -0.374005 0.384446 )
Norm@50keV : 1.22783E-04 ( -3.79221e-05 5.01468e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 44.53 using 59 PHA bins.
# Reduced chi-squared = 0.7811 for 57 degrees of freedom
# Null hypothesis probability = 8.854638e-01
Photon flux (15-150 keV) in 87.7 sec: 0.496642 ( -0.0449711 0.0451481 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.30929e-06 ( -1.11625e-07 1.11821e-07 ) 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 : 2.37697E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 346.90 using 59 PHA bins.
# Reduced chi-squared = 6.1947 for 56 degrees of freedom
# Null hypothesis probability = 1.460267e-43
Photon flux (15-150 keV) in 87.7 sec: 0.477743 ( -0.051743 0.050347 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.24289e-06 ( -1.23587e-07 1.21298e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 2.96431 ( -4.10186 -4.10186 )
beta : -10.0000 ( 10 10 )
Epeak [keV] : 11.6217 ( -0.80416 0.722638 )
Norm@50keV : 2696.26 ( -2696.25 67274.5 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 31.46 using 59 PHA bins.
# Reduced chi-squared = 0.5719 for 55 degrees of freedom
# Null hypothesis probability = 9.955329e-01
Photon flux (15-150 keV) in 87.7 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) = 5.78e-07
S(50-100 keV) = 2.93e-08
T90 vs. Hardness ratio plot
T90 = 308.996000051498 sec.
Hardness ratio (energy fluence ratio) = 0.050692
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.0797591
Count Ratio (50-100 keV) / (15-25 keV) = 0.00228818
Mask shadow pattern
IMX = -3.496920189401482E-01, IMY = -7.749834014070296E-02
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:
-13.899400 71.984000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
186.8614 -62.6520 6.9 46.4 31.0 1.0203 1.7 9.1 GX 301-2
245.1285 -15.6257 0.7 19.7 167.3 3.2777 17.5 8.7 Sco X-1
256.1746 -37.8307 1.3 6.7 -66.7 1.7026 8.8 8.9 4U 1700-377
256.2514 -36.4968 31.7 6.4 -78.1 0.0681 0.4 9.9 GX 349+2
262.8612 -24.8953 9.8 16.0 -128.6 -0.2264 -1.2 12.1 GX 1+4
264.5152 -44.3259 0.0 15.3 -51.1 0.2080 1.1 12.3 4U 1735-44
268.3185 -1.5936 4.8 38.2 -149.8 0.6279 2.4 9.0 SW J1753.5-0127
270.4533 -25.0956 11.9 21.4 -114.9 0.1891 1.0 9.2 GX 5-1
270.3847 -25.6512 5.3 21.0 -113.7 0.4499 2.4 7.1 GRS 1758-258
273.9969 -13.8992 14.2 31.2 -129.3 0.2077 0.8 8.3 GX 17+2
275.9546 -30.2212 4.6 23.5 -97.1 0.5360 2.5 8.9 H1820-303
284.9192 -24.8160 14.8 32.9 -101.1 -0.2199 -0.8 8.9 HT1900.1-2455
263.1858 -33.9671 0.0 12.1 -94.1 0.0213 0.1 12.6 GX 354-0
255.9117 -48.7387 1.6 14.7 -22.4 1.2850 7.4 ------ UNKNOWN
271.7862 15.5885 2.5 55.3 -155.4 3.2109 4.6 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-13.899400 73.800600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
186.8635 -62.6537 7.6 46.4 31.0 0.9447 1.5 9.0 GX 301-2
245.1289 -15.6221 0.7 19.7 167.3 3.3828 17.6 8.7 Sco X-1
256.1626 -37.8356 1.8 6.7 -66.6 1.2323 6.2 8.4 4U 1700-377
256.6270 -36.5636 27.3 6.7 -78.0 -0.0816 -0.4 12.5 GX 349+2
263.1872 -24.8829 0.0 16.2 -127.9 0.2152 1.1 12.7 GX 1+4
264.5152 -44.3259 0.0 15.3 -51.1 0.2065 1.1 12.3 4U 1735-44
268.2758 -1.5921 6.9 38.2 -149.9 0.4479 1.7 10.0 SW J1753.5-0127
270.4520 -25.0886 4.0 21.4 -114.9 0.5892 2.9 9.1 GX 5-1
270.2945 -25.6064 5.1 21.0 -113.9 0.5044 2.5 8.2 GRS 1758-258
274.0133 -13.9469 26.5 31.2 -129.2 0.1141 0.4 5.4 GX 17+2
275.9437 -30.2231 4.3 23.5 -97.1 0.5924 2.7 8.7 H1820-303
284.9020 -24.8197 5.5 32.9 -101.1 -0.6150 -2.1 9.5 HT1900.1-2455
262.9811 -33.8220 475.4 12.0 -94.9 -0.0051 -0.0 0.9 GX 354-0
209.1977 -33.9833 2.9 32.2 77.5 1.8279 4.0 ------ UNKNOWN
255.9043 -48.7348 1.6 14.7 -22.4 1.2829 7.1 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
131.600590 184.130000
185.000000 185.340000
187.000000 194.755500
198.000000 205.770000
207.000000 221.190000
226.000000 239.740000
241.000000 248.850000
251.000000 315.100000
316.000000 363.097800
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
245.1449 -15.6206 0.6 0.1 81.0 8.6101 19.7 9.6 Sco X-1
254.5923 35.3779 6.2 51.8 175.9 2.6367 1.9 6.9 Her X-1
256.1679 -37.8487 1.5 24.2 -35.2 3.4279 7.5 8.6 4U 1700-377
256.5771 -36.5826 0.0 23.3 -37.4 0.2477 0.5 11.8 GX 349+2
262.8847 -24.6877 2.9 18.9 -72.3 -1.8399 -3.9 7.6 GX 1+4
264.5620 -44.5308 36.4 33.2 -39.3 -0.1679 -0.3 9.1 4U 1735-44
268.2834 -1.3842 6.8 26.8 -133.7 -0.8094 -1.7 6.5 SW J1753.5-0127
270.1033 -25.2052 0.0 25.1 -77.4 -0.6140 -1.1 12.4 GX 5-1
270.2093 -25.6376 7.8 25.4 -76.5 0.9794 1.8 8.1 GRS 1758-258
274.1638 -13.9933 4.6 28.0 -103.3 1.3375 2.5 9.6 GX 17+2
275.7417 -30.5017 0.0 31.6 -70.4 0.5725 0.9 12.5 H1820-303
285.0512 -25.0382 14.1 38.3 -83.0 0.8561 0.8 7.1 HT1900.1-2455
262.9674 -33.8098 597.5 24.2 -51.9 0.0092 0.0 1.8 GX 354-0
212.1670 -12.4866 2.8 32.2 77.5 4.5458 4.2 ------ UNKNOWN
266.1143 -10.8852 3.0 20.9 -114.4 1.6451 3.8 ------ UNKNOWN
284.3191 16.7521 2.4 50.3 -142.2 5.3572 4.8 ------ UNKNOWN
Plot creation:
Fri Jan 19 23:57:13 EST 2024