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
251.5909 -45.8094 0.0759 4.7 -177.3 -0.0811 -2.6 TRIG_00753085
------------------------------------------
Foreground time interval of the image:
0.000 8.217 (delta_t = 8.217 [sec])
Background time interval of the image:
-239.184 0.000 (delta_t = 239.184 [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
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.016000
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 0.016000
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 0.016000
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
0.000000 157.328800
158.816000 537.396000
538.816000 704.608000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 6.33532 ( -2.32286 -6.30566 )
Norm@50keV : 1.16924E-06 ( -1.1872e-06 1.3209e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.53 using 59 PHA bins.
# Reduced chi-squared = 0.7461 for 57 degrees of freedom
# Null hypothesis probability = 9.231711e-01
Photon flux (15-150 keV) in 701.7 sec: 0.0 6.98214E-03 ( -0.00422298 0.00494572 ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( -1.01521e-07 1.17011e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
0.000000 157.328800
158.816000 537.396000
538.816000 704.608000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 1.47977E-05 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.58 using 59 PHA bins.
# Reduced chi-squared = 0.9389 for 56 degrees of freedom
# Null hypothesis probability = 6.052615e-01
Photon flux (15-150 keV) in 701.7 sec: 0.0 7.97929E-03 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
0.000000 157.328800
158.816000 537.396000
538.816000 704.608000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 2.79341 ( 0.98395 0.98395 )
beta : -9.37167 ( 2.5 2.5 )
Epeak [keV] : 10.5126 ( -80 -80 )
Norm@50keV : 64.5219 ( -63.7966 4743.9 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.89 using 59 PHA bins.
# Reduced chi-squared = 0.7617 for 55 degrees of freedom
# Null hypothesis probability = 9.033063e-01
Photon flux (15-150 keV) in 701.7 sec: 0.0 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 7.56005e-08 ( -7.06886e-08 -7.56005e-08 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 2.30800 (-1.06347 1.36003)
R^2/D10^2 : 6.91520 (-7.4597 2177.6)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.86 using 59 PHA bins.
# Reduced chi-squared = 0.7344 for 57 degrees of freedom
# Null hypothesis probability = 9.336562e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.459e-07 8.266e-08
25- 50 7.679e-09 5.645e-09
50-150 1.073e-12 2.018e-12
15-150 1.536e-07 8.827e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 3.92513 (-2.30609 4.65227)
Norm : 4.47777 (-4.5175 822.221)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.04 using 59 PHA bins.
# Reduced chi-squared = 0.7376 for 57 degrees of freedom
# Null hypothesis probability = 9.309015e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.393e-07 8.080e-08
25- 50 9.639e-09 6.294e-09
50-150 1.260e-11 1.700e-11
15-150 1.489e-07 9.031e-08
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 1.00110E-04 (-0.00010011 -0.00010011)
R1^2/D10^2 : 7.24188 (-7.24188 -7.24188)
kT2 [keV] : 2.28518 (-1.06843 1.35311)
R2^2/D10^2 : 7.49040 (-7.49048 2193.01)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.87 using 59 PHA bins.
#Fit statistic : Chi-Squared = 41.86 using 59 PHA bins.
# Reduced chi-squared = 0.7613 for 55 degrees of freedom
# Reduced chi-squared = 0.7610 for 55 degrees of freedom
# Null hypothesis probability = 9.036767e-01
# Null hypothesis probability = 9.039988e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.410e-07 4.817e+04
25- 50 7.256e-09 3.593e+05
50-150 9.591e-13 9.441e+06
15-150 1.483e-07 9.989e+06
Peak spectrum fit
Power-law model
Time interval is from 404.104 sec. to 405.104 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.545292 ( -0.545121 1.44579 )
Norm@50keV : 1.72720E-03 ( -0.00172706 0.00124181 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.17 using 59 PHA bins.
# Reduced chi-squared = 0.9679 for 57 degrees of freedom
# Null hypothesis probability = 5.441055e-01
Photon flux (15-150 keV) in 1 sec: 0.203128 ( -0.125281 0.139308 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.26849e-08 ( -2.26849e-08 1.32571e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 404.104 sec. to 405.104 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -9.99955 ( -0.576072 1.42028 )
Epeak [keV] : 108.058 ( -9999.36 -9999.36 )
Norm@50keV : 0.128965 ( -0.128149 0.086638 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.85 using 59 PHA bins.
# Reduced chi-squared = 0.9795 for 56 degrees of freedom
# Null hypothesis probability = 5.184400e-01
Photon flux (15-150 keV) in 1 sec: 0.204764 ( -0.204764 0.13776 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.26365e-08 ( -1.31867e-08 1.33216e-08 ) ergs/cm2
Band function
Time interval is from 404.104 sec. to 405.104 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.859114 ( 0.859419 0.859419 )
beta : -0.545368 ( 0.545095 0.545095 )
Epeak [keV] : 10.6857 ( -10.6805 -10.6805 )
Norm@50keV : 2.91823E-03 ( -0.00291928 442782 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.17 using 59 PHA bins.
# Reduced chi-squared = 1.003 for 55 degrees of freedom
# Null hypothesis probability = 4.682701e-01
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] : 41.0201 (-41.418 -41.418)
R^2/D10^2 : 1.39718E-03 (-0.00137848 0.0115691)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.21 using 59 PHA bins.
# Reduced chi-squared = 0.9687 for 57 degrees of freedom
# Null hypothesis probability = 5.423559e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.525e-09 2.015e-09
25- 50 2.028e-09 1.766e-09
50-150 1.231e-10 1.727e-10
15-150 4.677e-09 3.961e-09
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.362 (-199.363 -199.363)
Norm : 0.886175 (-0.566825 0.566848)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.96 using 59 PHA bins.
# Reduced chi-squared = 0.9993 for 57 degrees of freedom
# Null hypothesis probability = 4.766502e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.207e-09 1.572e-09
25- 50 4.245e-09 3.177e-09
50-150 9.310e-09 6.605e-09
15-150 1.576e-08 1.103e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.48804 (-3.49191 128.578)
R1^2/D10^2 : 5.09173 (-5.07549 -5.07549)
kT2 [keV] : 47.1028 (-26.7991 -47.1137)
R2^2/D10^2 : 9.66065E-04 (-0.000929634 0.00669641)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.66 using 59 PHA bins.
# Reduced chi-squared = 0.9757 for 55 degrees of freedom
# Null hypothesis probability = 5.258671e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.535e-09 1.517e-09
25- 50 2.295e-09 1.228e-09
50-150 2.009e-08 1.140e-08
15-150 2.492e-08 1.476e-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: 1.50000 ( -1.5 -1.5 )
Norm@50keV : 0.0 ( 0 0.000208041 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.85 using 59 PHA bins.
# Reduced chi-squared = 1.173 for 57 degrees of freedom
# Null hypothesis probability = 1.747573e-01
Photon flux (15-150 keV) in 8.217 sec: 0.0 ( 0 0.0325296 ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 1.88708e-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 : 0.0 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.85 using 59 PHA bins.
# Reduced chi-squared = 1.194 for 56 degrees of freedom
# Null hypothesis probability = 1.521118e-01
Photon flux (15-150 keV) in 8.217 sec: 0.0 ( 0 0.0325116 ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 1.89517e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.983950 ( 0.98395 0.98395 )
beta : -2.50000 ( 2.5 2.5 )
Epeak [keV] : 80.0000 ( -80 -80 )
Norm@50keV : 0.0 ( 0 20062.7 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.85 using 59 PHA bins.
# Reduced chi-squared = 1.215 for 55 degrees of freedom
# Null hypothesis probability = 1.313881e-01
Photon flux (15-150 keV) in 8.217 sec: 0.0 ( ) 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) = 0.00e+001.53e-08
S(50-100 keV) = 0.00e+007.02e-10
T90 vs. Hardness ratio plot
T90 = 575.98399990797 sec.
Hardness ratio (energy fluence ratio) =
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = -0.412153
Count Ratio (50-100 keV) / (15-25 keV) = -0.204286
Mask shadow pattern
IMX = -8.148930779679461E-02, IMY = 3.887489598850079E-03
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.016000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.016000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.016000
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:
-239.184000 0.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.2962 -60.6165 1.9 42.8 -4.0 2.6557 6.0 0.7 Cen X-3
186.6238 -62.7434 2.1 34.8 -4.6 1.9308 5.4 1.8 GX 301-2
244.9885 -15.6397 0.5 33.2 129.1 13.0470 24.1 0.5 Sco X-1
255.9907 -37.8556 0.7 13.0 167.4 4.2334 15.9 0.7 4U 1700-377
256.4751 -36.4803 2.9 14.4 166.0 1.0901 4.0 3.9 GX 349+2
263.1033 -24.7612 3.5 27.4 166.1 1.0481 3.3 5.2 GX 1+4
264.5931 -44.3464 4.9 13.3 -151.5 0.6422 2.4 8.9 4U 1735-44
268.5562 -1.3971 4.0 51.1 160.5 3.0636 2.9 11.8 SW J1753.5-0127
270.3112 -25.0184 5.5 30.3 178.3 0.6689 2.1 3.9 GX 5-1
270.3863 -25.6131 6.2 29.8 179.0 0.5698 1.9 9.0 GRS 1758-258
274.1166 -13.9278 12.7 41.7 174.3 0.4256 0.9 9.2 GX 17+2
276.0056 -30.3862 2.9 29.0 -167.0 1.1721 4.0 4.3 H1820-303
285.2104 -24.8371 0.0 38.6 -162.7 -0.2368 -0.6 10.7 HT1900.1-2455
263.0178 -33.7640 2.2 19.5 177.0 1.4093 5.3 4.5 GX 354-0
259.8942 -25.0014 0.8 26.1 160.3 4.2003 14.4 ------ UNKNOWN
159.2351 -51.8039 2.4 52.3 2.8 3.4000 4.9 ------ UNKNOWN
255.2157 -41.6543 1.7 9.5 175.6 1.8178 6.7 ------ UNKNOWN
289.9975 -35.7256 2.5 34.3 -144.5 1.6976 4.7 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 8.216600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.2398 -60.5807 117.2 42.8 -4.0 -0.0051 -0.1 3.4 Cen X-3
186.3072 -62.8652 7.2 34.9 -4.9 0.0723 1.6 11.1 GX 301-2
244.9673 -15.5516 8.1 33.3 129.0 -0.0854 -1.4 5.4 Sco X-1
255.9972 -37.6514 8.1 13.2 167.0 -0.0480 -1.4 11.6 4U 1700-377
256.3573 -36.5671 5.5 14.3 165.9 0.0688 2.1 9.4 GX 349+2
263.0306 -24.8757 7.7 27.3 166.0 -0.0556 -1.5 7.9 GX 1+4
264.7923 -44.6589 0.0 13.3 -150.0 0.1073 3.2 12.7 4U 1735-44
268.4639 -1.3713 3.2 51.1 160.4 -0.5082 -3.6 7.5 SW J1753.5-0127
270.0823 -25.1382 10.9 30.1 178.1 -0.0424 -1.1 11.5 GX 5-1
270.4052 -25.6243 3.4 29.8 179.1 -0.1368 -3.5 9.0 GRS 1758-258
273.9622 -14.1021 28.4 41.5 174.2 -0.0237 -0.4 4.7 GX 17+2
276.0116 -30.4176 3.9 29.0 -167.0 0.1055 2.9 5.4 H1820-303
285.1505 -24.8085 4.3 38.6 -162.8 -0.1240 -2.7 9.2 HT1900.1-2455
263.0342 -33.7262 10.2 19.5 177.0 -0.0386 -1.1 6.9 GX 354-0
180.6045 -45.3363 2.7 43.5 20.1 0.2752 4.2 ------ UNKNOWN
312.1434 -42.8616 2.0 44.8 -120.2 0.7828 5.8 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
38.016600 157.328800
158.816000 537.396000
538.816000 782.996000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.1583 -60.5839 8.0 47.5 -12.7 5.0457 1.4 5.2 Cen X-3
186.9563 -62.6999 9.9 39.3 -12.9 2.8478 1.2 9.3 GX 301-2
244.9665 -15.6223 1.1 30.8 113.2 36.6868 11.0 1.3 Sco X-1
256.0334 -37.8469 3.8 8.6 148.9 5.8173 3.1 2.2 4U 1700-377
256.2646 -36.4911 3.2 10.0 147.3 7.1349 3.7 9.2 GX 349+2
262.8837 -24.8405 6.8 22.9 152.8 3.4686 1.7 8.9 GX 1+4
264.7122 -44.2955 45.5 9.2 -149.2 -0.4692 -0.3 9.4 4U 1735-44
268.3167 -1.3522 14.2 46.8 149.1 6.4382 0.8 6.8 SW J1753.5-0127
270.2974 -25.0044 5.6 25.6 167.8 4.5723 2.0 4.5 GX 5-1
270.3004 -25.9419 0.0 24.8 168.9 2.5128 1.2 11.9 GRS 1758-258
274.0901 -14.1277 64.8 36.9 163.9 0.5987 0.2 7.4 GX 17+2
275.9390 -30.2581 19.0 24.4 -175.2 1.1861 0.6 6.6 H1820-303
284.9035 -24.8761 7.5 33.8 -170.9 3.5811 1.5 7.7 HT1900.1-2455
262.8431 -33.7490 8.2 14.8 164.7 2.7020 1.4 8.9 GX 354-0
266.9433 -17.6670 2.6 30.9 155.1 10.5677 4.5 ------ UNKNOWN
259.8621 -25.0257 1.3 21.9 146.1 17.0548 8.9 ------ UNKNOWN
177.1649 -60.7192 2.8 44.2 -11.3 11.5697 4.1 ------ UNKNOWN
149.9661 -59.7218 3.1 56.8 -17.7 34.7812 3.8 ------ UNKNOWN
312.5267 -18.2809 2.7 56.7 -151.8 49.2391 4.3 ------ UNKNOWN
317.2339 -37.7353 2.5 48.1 -129.1 41.5317 4.5 ------ UNKNOWN
Plot creation:
Wed May 17 06:13:27 EDT 2017