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
255.0742 -41.9236 0.0316 8.0 25.1 0.8873 6.1 TRIG_00773898
------------------------------------------
Foreground time interval of the image:
0.000 88.000 (delta_t = 88.000 [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
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 88.000000
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 88.000000
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 88.000000
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
Time interval is from 0.000 sec. to 88.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.14894 ( -0.355262 0.38828 )
Norm@50keV : 5.13552E-04 ( -0.000144429 0.000144351 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.75 using 59 PHA bins.
# Reduced chi-squared = 1.031 for 57 degrees of freedom
# Null hypothesis probability = 4.109733e-01
Photon flux (15-150 keV) in 88 sec: 8.28033E-02 ( -0.0173345 0.0173354 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.22236e-07 ( -1.04366e-07 1.108e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 88.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -2.77436 ( -5.34559 2.68839 )
Epeak [keV] : 31.2715 ( -4.36339 5.10528 )
Norm@50keV : 0.965832 ( -1.12886 3975.44 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.91 using 59 PHA bins.
# Reduced chi-squared = 0.8555 for 56 degrees of freedom
# Null hypothesis probability = 7.706016e-01
Photon flux (15-150 keV) in 88 sec: 7.74290E-02 ( -0.0162537 0.016436 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.15803e-07 ( -6.85106e-08 7.65046e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 88.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 3.54455 ( -4.055 -4.22234 )
beta : -5.23134 ( 4.50039 1.88601 )
Epeak [keV] : 30.9960 ( -6.13612 4.91475 )
Norm@50keV : 3.25466 ( -3.24952 12.6811 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.71 using 59 PHA bins.
# Reduced chi-squared = 0.8675 for 55 degrees of freedom
# Null hypothesis probability = 7.465779e-01
Photon flux (15-150 keV) in 88 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 3.26412e-07 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 8.01756 (-1.25533 1.52541)
R^2/D10^2 : 9.99572E-02 (-0.0512829 0.0996021)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.59 using 59 PHA bins.
# Reduced chi-squared = 0.8524 for 57 degrees of freedom
# Null hypothesis probability = 7.785273e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.024e-07 3.841e-08
25- 50 1.799e-07 6.441e-08
50-150 4.759e-08 2.801e-08
15-150 3.299e-07 1.147e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 40.8307 (-14.7161 31.6785)
Norm : 0.544666 (-0.168147 0.246405)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.68 using 59 PHA bins.
# Reduced chi-squared = 0.9592 for 57 degrees of freedom
# Null hypothesis probability = 5.627453e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.108e-07 3.070e-08
25- 50 1.471e-07 5.360e-08
50-150 1.164e-07 7.894e-08
15-150 3.743e-07 1.182e-07
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 200.000 (-200 -200)
R1^2/D10^2 : 2.57984E-06 (-2.57989e-06 -2.57989e-06)
kT2 [keV] : 7.82977 (-1.27022 1.56761)
R2^2/D10^2 : 0.107823 (-0.0563456 0.111829)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.59 using 59 PHA bins.
#Fit statistic : Chi-Squared = 48.13 using 59 PHA bins.
# Reduced chi-squared = 0.8834 for 55 degrees of freedom
# Reduced chi-squared = 0.8752 for 55 degrees of freedom
# Null hypothesis probability = 7.166085e-01
# Null hypothesis probability = 7.323082e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.024e-07 1.181e+00
25- 50 1.800e-07 1.012e+01
50-150 4.766e-08 2.658e+02
15-150 3.301e-07 2.707e+02
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 88.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.14894 ( -0.355262 0.38828 )
Norm@50keV : 5.13552E-04 ( -0.000144429 0.000144351 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.75 using 59 PHA bins.
# Reduced chi-squared = 1.031 for 57 degrees of freedom
# Null hypothesis probability = 4.109733e-01
Photon flux (15-150 keV) in 88 sec: 8.28033E-02 ( -0.0173345 0.0173354 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.22236e-07 ( -1.04366e-07 1.108e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 88.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -2.77436 ( -5.34559 2.68839 )
Epeak [keV] : 31.2715 ( -4.36339 5.10528 )
Norm@50keV : 0.965832 ( -1.12886 3975.44 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.91 using 59 PHA bins.
# Reduced chi-squared = 0.8555 for 56 degrees of freedom
# Null hypothesis probability = 7.706016e-01
Photon flux (15-150 keV) in 88 sec: 7.74290E-02 ( -0.0162537 0.016436 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.15803e-07 ( -6.85106e-08 7.65046e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 88.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 3.54455 ( -4.055 -4.22234 )
beta : -5.23134 ( 4.50039 1.88601 )
Epeak [keV] : 30.9960 ( -6.13612 4.91475 )
Norm@50keV : 3.25466 ( -3.24952 12.6854 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.71 using 59 PHA bins.
# Reduced chi-squared = 0.8675 for 55 degrees of freedom
# Null hypothesis probability = 7.465779e-01
Photon flux (15-150 keV) in 88 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 3.26412e-07 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 8.01756 (-1.25533 1.52541)
R^2/D10^2 : 9.99572E-02 (-0.0512829 0.0996021)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.59 using 59 PHA bins.
# Reduced chi-squared = 0.8524 for 57 degrees of freedom
# Null hypothesis probability = 7.785273e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.024e-07 3.777e-08
25- 50 1.799e-07 6.050e-08
50-150 4.759e-08 2.774e-08
15-150 3.299e-07 1.198e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 40.8307 (-14.7161 31.6785)
Norm : 0.544666 (-0.168147 0.246405)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.68 using 59 PHA bins.
# Reduced chi-squared = 0.9592 for 57 degrees of freedom
# Null hypothesis probability = 5.627453e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.108e-07 3.074e-08
25- 50 1.471e-07 5.394e-08
50-150 1.164e-07 7.573e-08
15-150 3.743e-07 1.435e-07
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 200.000 (-200 -200)
R1^2/D10^2 : 2.57984E-06 (-2.57989e-06 -2.57989e-06)
kT2 [keV] : 7.82977 (-1.27022 1.56761)
R2^2/D10^2 : 0.107823 (-0.0563456 0.111829)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.59 using 59 PHA bins.
#Fit statistic : Chi-Squared = 48.13 using 59 PHA bins.
# Reduced chi-squared = 0.8834 for 55 degrees of freedom
# Reduced chi-squared = 0.8752 for 55 degrees of freedom
# Null hypothesis probability = 7.166085e-01
# Null hypothesis probability = 7.323082e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.024e-07 1.286e+00
25- 50 1.800e-07 1.039e+01
50-150 4.766e-08 2.552e+02
15-150 3.301e-07 2.495e+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: 2.14894 ( -0.355262 0.38828 )
Norm@50keV : 5.13552E-04 ( -0.000144429 0.000144351 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.75 using 59 PHA bins.
# Reduced chi-squared = 1.031 for 57 degrees of freedom
# Null hypothesis probability = 4.109733e-01
Photon flux (15-150 keV) in 88 sec: 8.28033E-02 ( -0.0173345 0.0173354 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.22236e-07 ( -1.04366e-07 1.108e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -2.77436 ( -5.34559 2.68839 )
Epeak [keV] : 31.2715 ( -4.36339 5.10528 )
Norm@50keV : 0.965832 ( -1.12886 3975.44 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.91 using 59 PHA bins.
# Reduced chi-squared = 0.8555 for 56 degrees of freedom
# Null hypothesis probability = 7.706016e-01
Photon flux (15-150 keV) in 88 sec: 7.74290E-02 ( -0.0162537 0.016436 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.15803e-07 ( -6.85106e-08 7.65046e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 3.54455 ( -4.055 -4.22234 )
beta : -5.23134 ( 4.50039 1.88601 )
Epeak [keV] : 30.9960 ( -6.13612 4.91475 )
Norm@50keV : 3.25466 ( -3.24952 12.6861 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.71 using 59 PHA bins.
# Reduced chi-squared = 0.8675 for 55 degrees of freedom
# Null hypothesis probability = 7.465779e-01
Photon flux (15-150 keV) in 88 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 3.26412e-07 ( 0 0 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 1.32e-07
S(50-100 keV) = 1.19e-07
T90 vs. Hardness ratio plot
T90 = 88 sec.
Hardness ratio (energy fluence ratio) = 0.901515
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.06392
Count Ratio (50-100 keV) / (15-25 keV) = 0.169147
Mask shadow pattern
IMX = 1.271045827285170E-01, IMY = -5.951289511393238E-02
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 88.000000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 88.000000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 88.000000
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:
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 88.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.2254 -60.7550 4.7 44.0 -154.0 -0.7229 -2.5 8.4 Cen X-3
186.7820 -62.8839 4.4 35.9 -154.6 -0.5446 -2.6 7.6 GX 301-2
244.9197 -15.7765 0.7 32.4 -22.6 2.7035 15.8 8.9 Sco X-1
256.0669 -37.9593 4.9 11.7 16.3 -0.3222 -2.4 7.9 4U 1700-377
256.3321 -36.5585 4.2 13.1 14.2 0.3778 2.7 9.5 GX 349+2
263.1381 -24.9166 0.0 26.1 15.6 -0.2364 -1.5 12.4 GX 1+4
264.5520 -44.2881 0.0 12.2 60.7 -0.0261 -0.2 12.7 4U 1735-44
268.3744 -1.3022 5.2 50.0 9.8 0.8086 2.2 9.0 SW J1753.5-0127
270.4269 -25.1436 7.6 29.0 28.4 -0.2735 -1.5 8.7 GX 5-1
270.4543 -25.6119 0.0 28.6 29.0 0.3390 1.8 11.4 GRS 1758-258
274.0388 -13.9417 5.0 40.4 24.0 -0.5845 -2.3 6.0 GX 17+2
275.7725 -30.5031 0.0 27.6 43.3 0.1870 1.0 11.4 H1820-303
285.0528 -24.9549 30.5 37.2 47.7 -0.1113 -0.4 2.3 HT1900.1-2455
262.8369 -33.9658 5.0 18.0 26.6 0.3327 2.3 10.9 GX 354-0
255.0740 -41.9236 1.9 8.0 25.1 0.8873 6.1 ------ UNKNOWN
233.4161 -57.4418 0.8 12.8 -160.1 1.9746 13.6 ------ UNKNOWN
175.4441 -53.4043 3.3 44.1 -142.7 1.1554 3.5 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
124.700600 483.080000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.6064 -60.5126 92.4 51.9 -152.0 -0.1682 -0.1 10.8 Cen X-3
186.9085 -62.7567 4.2 43.9 -152.7 -2.1143 -2.8 7.0 GX 301-2
245.1684 -15.5313 0.0 27.7 -31.3 -2.3933 -5.7 12.7 Sco X-1
255.8329 -37.6707 0.0 4.3 -2.3 -0.1366 -0.3 12.7 4U 1700-377
256.3343 -36.5614 4.5 5.5 0.3 1.0576 2.6 9.6 GX 349+2
263.0144 -24.6821 10.9 18.5 12.9 -0.3979 -1.1 3.8 GX 1+4
264.5399 -44.3741 14.8 7.3 102.3 -0.3147 -0.8 9.8 4U 1735-44
268.3923 -1.3146 31.9 42.3 9.6 0.2257 0.4 8.4 SW J1753.5-0127
270.4416 -25.1841 9.2 21.0 31.6 0.5213 1.2 10.6 GX 5-1
270.2090 -25.8855 8.6 20.3 32.2 0.5555 1.3 9.9 GRS 1758-258
274.0058 -14.0378 59.1 32.3 25.6 0.1037 0.2 0.1 GX 17+2
275.9249 -30.3617 357.0 20.3 51.7 -0.0157 -0.0 0.3 H1820-303
285.2028 -24.9495 6.2 30.1 54.8 1.0969 1.9 9.2 HT1900.1-2455
262.8048 -33.9192 110.9 10.1 29.3 0.0390 0.1 10.5 GX 354-0
311.5337 -87.3868 3.3 46.7 166.6 3.4915 3.5 ------ UNKNOWN
264.1265 7.0091 2.3 49.6 1.4 4.0178 5.0 ------ UNKNOWN
255.0784 -41.9618 1.8 0.0 155.6 2.4628 6.5 ------ UNKNOWN
253.6325 -32.2104 2.8 9.8 -17.6 1.4883 4.1 ------ UNKNOWN
233.4355 -57.4767 0.8 20.7 -156.4 6.5190 15.1 ------ UNKNOWN
251.0179 -6.5579 2.4 35.5 -17.4 2.4130 4.8 ------ UNKNOWN
242.8553 -24.1202 2.8 20.5 -43.9 1.6943 4.2 ------ UNKNOWN
UNKNOWN
UNKNOWN
UNKNOWN
Plot creation:
Mon Sep 25 04:48:44 EDT 2017