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
262.6324 -5.9687 0.0417 8.3 -172.7 0.4946 4.6 TRIG_00756953
------------------------------------------
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: 2.64755 ( -0.609242 0.734699 )
Norm@50keV : 2.72202E-04 ( -0.000141529 0.000156033 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 82.14 using 59 PHA bins.
# Reduced chi-squared = 1.441 for 57 degrees of freedom
# Null hypothesis probability = 1.626808e-02
Photon flux (15-150 keV) in 64 sec: 5.86780E-02 ( -0.0192675 0.0194073 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.81594e-07 ( -6.93907e-08 7.84384e-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: -9.96537 ( )
Epeak [keV] : 25.0048 ( )
Norm@50keV : 5.21954E+05 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.75 using 59 PHA bins.
# Reduced chi-squared = 1.281 for 56 degrees of freedom
# Null hypothesis probability = 7.647009e-02
Photon flux (15-150 keV) in 64 sec: 5.92780E-02 5.89613E-02 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 5.24253e-18 ( 0 0 ) 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 : 5.00000 ( -3.58553 -5 )
beta : -6.40716 ( 6.40666 13.008 )
Epeak [keV] : 24.4522 ( -3.67641 4.01758 )
Norm@50keV : 118.190 ( -33.5354 264.912 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 73.52 using 59 PHA bins.
# Reduced chi-squared = 1.337 for 55 degrees of freedom
# Null hypothesis probability = 4.830380e-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] : 5.87939 (-1.21153 1.58431)
R^2/D10^2 : 0.265424 (-0.264865 0.475377)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 75.97 using 59 PHA bins.
# Reduced chi-squared = 1.333 for 57 degrees of freedom
# Null hypothesis probability = 4.731982e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.574e-08 4.490e-08
25- 50 7.224e-08 4.653e-08
50-150 6.082e-09 5.677e-09
15-150 1.541e-07 9.258e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 21.5467 (-9.12888 21.3886)
Norm : 0.678964 (-0.346512 0.682414)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 79.63 using 59 PHA bins.
# Reduced chi-squared = 1.397 for 57 degrees of freedom
# Null hypothesis probability = 2.554753e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.160e-08 4.344e-08
25- 50 6.630e-08 4.147e-08
50-150 2.244e-08 1.970e-08
15-150 1.603e-07 1.049e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.85204 (-5.88938 28.0804)
R1^2/D10^2 : 0.261686 (-0.257837 -0.257837)
kT2 [keV] : 5.86643 (-5.92181 -5.92181)
R2^2/D10^2 : 9.28710E-03 (-0.00613033 -0.00613033)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 75.97 using 59 PHA bins.
# Reduced chi-squared = 1.381 for 55 degrees of freedom
# Null hypothesis probability = 3.202735e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.609e-08 2.083e+00
25- 50 7.184e-08 1.762e+01
50-150 5.934e-09 4.346e+02
15-150 1.539e-07 4.074e+02
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: 2.64755 ( -0.609242 0.734699 )
Norm@50keV : 2.72202E-04 ( -0.000141529 0.000156033 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 82.14 using 59 PHA bins.
# Reduced chi-squared = 1.441 for 57 degrees of freedom
# Null hypothesis probability = 1.626808e-02
Photon flux (15-150 keV) in 64 sec: 5.86780E-02 ( -0.0192675 0.0194073 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.81594e-07 ( -6.93907e-08 7.84384e-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: -9.96537 ( )
Epeak [keV] : 25.0048 ( )
Norm@50keV : 5.21954E+05 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.75 using 59 PHA bins.
# Reduced chi-squared = 1.281 for 56 degrees of freedom
# Null hypothesis probability = 7.647009e-02
Photon flux (15-150 keV) in 64 sec: 5.92780E-02 5.89613E-02 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 5.24253e-18 ( 0 0 ) 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 : 5.00000 ( -3.58553 -5 )
beta : -6.40716 ( 6.40666 13.008 )
Epeak [keV] : 24.4522 ( -3.67641 4.01758 )
Norm@50keV : 118.190 ( -33.5354 264.912 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 73.52 using 59 PHA bins.
# Reduced chi-squared = 1.337 for 55 degrees of freedom
# Null hypothesis probability = 4.830380e-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] : 5.87939 (-1.21153 1.58431)
R^2/D10^2 : 0.265424 (-0.264865 0.475377)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 75.97 using 59 PHA bins.
# Reduced chi-squared = 1.333 for 57 degrees of freedom
# Null hypothesis probability = 4.731982e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.574e-08 4.496e-08
25- 50 7.224e-08 4.605e-08
50-150 6.082e-09 5.165e-09
15-150 1.541e-07 9.542e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 21.5467 (-9.12888 21.3886)
Norm : 0.678964 (-0.346512 0.682414)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 79.63 using 59 PHA bins.
# Reduced chi-squared = 1.397 for 57 degrees of freedom
# Null hypothesis probability = 2.554753e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.160e-08 4.389e-08
25- 50 6.630e-08 4.269e-08
50-150 2.244e-08 2.086e-08
15-150 1.603e-07 1.016e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.85204 (-5.88938 28.0804)
R1^2/D10^2 : 0.261686 (-0.257837 -0.257837)
kT2 [keV] : 5.86643 (-5.92181 -5.92181)
R2^2/D10^2 : 9.28710E-03 (-0.00613033 -0.00613033)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 75.97 using 59 PHA bins.
# Reduced chi-squared = 1.381 for 55 degrees of freedom
# Null hypothesis probability = 3.202735e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.609e-08 1.804e+00
25- 50 7.184e-08 1.781e+01
50-150 5.934e-09 4.570e+02
15-150 1.539e-07 4.288e+02
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: 2.64755 ( -0.609242 0.734699 )
Norm@50keV : 2.72202E-04 ( -0.000141529 0.000156033 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 82.14 using 59 PHA bins.
# Reduced chi-squared = 1.441 for 57 degrees of freedom
# Null hypothesis probability = 1.626808e-02
Photon flux (15-150 keV) in 64 sec: 5.86780E-02 ( -0.0192675 0.0194073 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.81594e-07 ( -6.93907e-08 7.84384e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -9.96537 ( )
Epeak [keV] : 25.0048 ( )
Norm@50keV : 5.21954E+05 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.75 using 59 PHA bins.
# Reduced chi-squared = 1.281 for 56 degrees of freedom
# Null hypothesis probability = 7.647009e-02
Photon flux (15-150 keV) in 64 sec: 5.92780E-02 5.89613E-02 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 5.24253e-18 ( 0 0 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -3.58553 -5 )
beta : -6.40716 ( 6.40666 13.008 )
Epeak [keV] : 24.4522 ( -3.67641 4.01758 )
Norm@50keV : 118.190 ( -33.5354 264.912 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 73.52 using 59 PHA bins.
# Reduced chi-squared = 1.337 for 55 degrees of freedom
# Null hypothesis probability = 4.830380e-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) = 6.09e-08
S(50-100 keV) = 3.87e-08
T90 vs. Hardness ratio plot
T90 = 64 sec.
Hardness ratio (energy fluence ratio) = 0.635468
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.805759
Count Ratio (50-100 keV) / (15-25 keV) = 0.149357
Mask shadow pattern
IMX = -1.450755282596851E-01, IMY = 1.863643768045014E-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] [']
244.9772 -15.6480 0.4 16.6 86.4 4.2112 31.1 0.5 Sco X-1
254.3393 35.3363 11.7 50.1 175.2 0.3433 1.0 5.8 Her X-1
255.9941 -37.8340 0.7 24.2 15.2 1.9328 15.9 0.7 4U 1700-377
256.6156 -36.5727 0.0 22.8 14.7 -0.0269 -0.2 12.5 GX 349+2
263.1594 -24.6342 3.6 10.4 -2.1 0.3860 3.2 10.6 GX 1+4
264.9226 -44.4293 5.8 30.3 -0.7 0.2791 2.0 7.8 4U 1735-44
268.4531 -1.3846 5.6 14.4 -149.9 -0.2399 -2.0 6.5 SW J1753.5-0127
270.2347 -25.1423 4.6 13.3 -30.6 0.3022 2.5 4.6 GX 5-1
270.1399 -25.7524 4.6 13.8 -28.8 0.3183 2.7 8.8 GRS 1758-258
274.0598 -14.1784 10.6 11.6 -85.6 -0.1439 -1.1 9.1 GX 17+2
275.8628 -30.2271 5.4 20.4 -32.9 0.2879 2.2 9.0 H1820-303
284.9283 -24.7991 4.8 23.9 -57.0 0.3459 2.4 9.4 HT1900.1-2455
288.9677 10.8068 0.0 36.6 -128.4 0.2453 1.1 13.0 GRS 1915+105
262.9869 -33.8371 84.9 19.6 1.1 0.0166 0.1 0.2 GX 354-0
221.3906 -15.8333 2.1 39.2 85.7 2.3423 5.4 ------ UNKNOWN
259.8994 -25.0547 1.3 11.0 13.7 1.0548 9.1 ------ UNKNOWN
276.5783 -71.9235 2.6 58.3 -1.9 3.1661 4.5 ------ UNKNOWN
263.3587 36.8453 2.1 51.1 -175.3 1.7136 5.5 ------ UNKNOWN
271.6495 24.5399 1.9 39.9 -163.0 1.0992 6.0 ------ UNKNOWN
293.3560 29.5424 3.2 53.2 -142.3 2.6752 3.6 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
235.300600 963.089800
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9823 -15.6426 0.2 20.0 145.5 46.6115 57.9 0.2 Sco X-1
255.9878 -37.8899 1.6 32.5 96.0 10.9687 7.4 2.7 4U 1700-377
256.5297 -36.2817 24.4 30.8 95.8 -0.6561 -0.5 9.6 GX 349+2
263.0797 -24.7786 2.0 18.8 85.1 5.1510 5.9 4.3 GX 1+4
264.6701 -44.5967 70.2 38.7 83.8 0.4815 0.2 9.3 4U 1735-44
268.2098 -1.5916 0.0 7.0 -42.7 -0.6501 -0.8 12.6 SW J1753.5-0127
270.2082 -25.1692 2.5 20.5 66.4 3.5986 4.6 6.8 GX 5-1
270.1353 -25.8901 0.0 21.1 67.3 1.8089 2.2 12.6 GRS 1758-258
273.9539 -14.0289 3.6 13.6 33.1 2.5939 3.2 3.1 GX 17+2
275.7606 -30.4545 10.1 27.4 61.1 1.2429 1.1 10.0 H1820-303
285.1931 -24.9340 481.3 28.6 39.8 -0.0219 -0.0 8.6 HT1900.1-2455
288.8130 11.0819 58.5 31.0 -37.3 0.2299 0.2 8.2 GRS 1915+105
263.0678 -33.9297 5.0 28.0 85.5 2.7328 2.3 6.9 GX 354-0
259.9082 -25.0241 0.9 19.3 93.9 11.3093 12.5 ------ UNKNOWN
302.5061 -20.0337 3.1 41.0 19.8 4.7029 3.7 ------ UNKNOWN
306.2228 7.9336 2.6 45.5 -21.3 5.9117 4.5 ------ UNKNOWN
286.4434 31.2261 3.4 43.5 -64.1 15.9786 3.4 ------ UNKNOWN
259.2393 35.0252 3.9 41.1 -98.4 15.4233 3.0 ------ UNKNOWN
239.6508 33.7752 3.5 45.4 -121.3 16.3145 3.3 ------ UNKNOWN
Plot creation:
Tue Jun 13 19:18:39 EDT 2017