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Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
282.0948 -2.4376 0.0411 3.1 30.9 1.5014 4.7 TRIG_00609139
------------------------------------------
Foreground time interval of the image:
119.000 123.040 (delta_t = 4.040 [sec])
167.000 303.108 (delta_t = 136.108 [sec])
592.000 963.084 (delta_t = 371.084 [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
Multiple GTIs in the spectrum
tstart tstop
119.000000 123.040000
167.000000 303.107900
592.000000 963.083700
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.68488 ( -0.556749 0.703065 )
Norm@50keV : 8.23728E-05 ( -4.15438e-05 4.59204e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 72.75 using 59 PHA bins.
# Reduced chi-squared = 1.276 for 57 degrees of freedom
# Null hypothesis probability = 7.797884e-02
Photon flux (15-150 keV) in 511.2 sec: 1.81953E-02 ( -0.00538943 0.00544313 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.45332e-07 ( -1.59524e-07 1.81619e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
119.000000 123.040000
167.000000 303.107900
592.000000 963.083700
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.466073 ( )
Epeak [keV] : 22.8092 ( )
Norm@50keV : 1.40383E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.85 using 59 PHA bins.
# Reduced chi-squared = 1.247 for 56 degrees of freedom
# Null hypothesis probability = 1.009365e-01
Photon flux (15-150 keV) in 511.2 sec: 1.80322E-02 ( -0.0052107 0.005258 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.80089e-07 ( -1.40295e-07 1.69333e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
119.000000 123.040000
167.000000 303.107900
592.000000 963.083700
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.839804 ( -1.73705 0.24604 )
beta : -10.0000 ( 10 1.77636e-15 )
Epeak [keV] : 23.0486 ( -9.53705 11.2009 )
Norm@50keV : 2.70214E-02 ( -0.0270096 21.2682 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.87 using 59 PHA bins.
# Reduced chi-squared = 1.270 for 55 degrees of freedom
# Null hypothesis probability = 8.549074e-02
Photon flux (15-150 keV) in 511.2 sec: 1.80380E-02 ( 6.98196 -0.0050422 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.08359e-07 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 5.98595 (-1.52688 2.17716)
R^2/D10^2 : 7.13590E-02 (-0.0713472 0.191348)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 70.02 using 59 PHA bins.
# Reduced chi-squared = 1.228 for 57 degrees of freedom
# Null hypothesis probability = 1.152992e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.731e-07 1.049e-07
25- 50 1.717e-07 1.085e-07
50-150 1.558e-08 1.367e-08
15-150 3.604e-07 2.151e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 23.9983 (-10.7322 22.1965)
Norm : 0.187172 (-0.0861304 0.190583)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 70.42 using 59 PHA bins.
# Reduced chi-squared = 1.235 for 57 degrees of freedom
# Null hypothesis probability = 1.091566e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.705e-07 9.346e-08
25- 50 1.702e-07 9.654e-08
50-150 6.810e-08 5.861e-08
15-150 4.088e-07 2.469e-07
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 10.8236 ( )
R1^2/D10^2 : 2.36879E-03 (-0.00229691 0.222878)
kT2 [keV] : 4.84364 (-4.87726 41.8063)
R2^2/D10^2 : 0.133391 (-0.130999 -0.130999)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.47 using 59 PHA bins.
#Fit statistic : Chi-Squared = 69.44 using 59 PHA bins.
# Reduced chi-squared = 1.263 for 55 degrees of freedom
# Reduced chi-squared = 1.263 for 55 degrees of freedom
# Null hypothesis probability = 9.063490e-02
# Null hypothesis probability = 9.108803e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.759e-07 1.119e-07
25- 50 1.722e-07 1.317e-07
50-150 5.336e-08 3.727e-08
15-150 4.014e-07 2.401e-07
Peak spectrum fit
Power-law model
Time interval is from 592.000 sec. to 963.084 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.68488 ( -0.556749 0.703065 )
Norm@50keV : 8.23728E-05 ( -4.15438e-05 4.59204e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 72.75 using 59 PHA bins.
# Reduced chi-squared = 1.276 for 57 degrees of freedom
# Null hypothesis probability = 7.797884e-02
Photon flux (15-150 keV) in 511.2 sec: 1.81953E-02 ( -0.00538943 0.00544313 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.45332e-07 ( -1.59524e-07 1.81619e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 592.000 sec. to 963.084 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.466073 ( )
Epeak [keV] : 22.8092 ( )
Norm@50keV : 1.40383E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.85 using 59 PHA bins.
# Reduced chi-squared = 1.247 for 56 degrees of freedom
# Null hypothesis probability = 1.009365e-01
Photon flux (15-150 keV) in 511.2 sec: 1.80322E-02 ( -0.0052107 0.005258 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.80089e-07 ( -1.40295e-07 1.69333e-07 ) ergs/cm2
Band function
Time interval is from 592.000 sec. to 963.084 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.839804 ( -1.73705 0.24604 )
beta : -10.0000 ( 10 7.10543e-15 )
Epeak [keV] : 23.0486 ( -9.53701 11.2009 )
Norm@50keV : 2.70214E-02 ( -0.0270096 21.2682 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.87 using 59 PHA bins.
# Reduced chi-squared = 1.270 for 55 degrees of freedom
# Null hypothesis probability = 8.549074e-02
Photon flux (15-150 keV) in 511.2 sec: 1.80380E-02 ( 6.98196 -0.0050422 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.08359e-07 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 5.98595 (-1.52688 2.17716)
R^2/D10^2 : 7.13590E-02 (-0.0713472 0.191348)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 70.02 using 59 PHA bins.
# Reduced chi-squared = 1.228 for 57 degrees of freedom
# Null hypothesis probability = 1.152992e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.731e-07 1.047e-07
25- 50 1.717e-07 1.089e-07
50-150 1.558e-08 1.359e-08
15-150 3.604e-07 2.293e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 23.9983 (-10.7322 22.1965)
Norm : 0.187172 (-0.0861304 0.190587)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 70.42 using 59 PHA bins.
# Reduced chi-squared = 1.235 for 57 degrees of freedom
# Null hypothesis probability = 1.091566e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.705e-07 8.755e-08
25- 50 1.702e-07 1.020e-07
50-150 6.810e-08 5.730e-08
15-150 4.088e-07 2.290e-07
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 10.8236 ( )
R1^2/D10^2 : 2.36879E-03 (-0.00229691 0.222878)
kT2 [keV] : 4.84364 (-4.87726 36.8799)
R2^2/D10^2 : 0.133391 (-0.130999 -0.130999)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.47 using 59 PHA bins.
#Fit statistic : Chi-Squared = 69.44 using 59 PHA bins.
# Reduced chi-squared = 1.263 for 55 degrees of freedom
# Reduced chi-squared = 1.263 for 55 degrees of freedom
# Null hypothesis probability = 9.063490e-02
# Null hypothesis probability = 9.108803e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.759e-07 1.206e-07
25- 50 1.722e-07 1.241e-07
50-150 5.336e-08 3.821e-08
15-150 4.014e-07 2.418e-07
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: 2.68488 ( -0.556749 0.703065 )
Norm@50keV : 8.23728E-05 ( -4.15438e-05 4.59204e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 72.75 using 59 PHA bins.
# Reduced chi-squared = 1.276 for 57 degrees of freedom
# Null hypothesis probability = 7.797884e-02
Photon flux (15-150 keV) in 511.2 sec: 1.81953E-02 ( -0.00538943 0.00544313 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.45332e-07 ( -1.59524e-07 1.81619e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.466073 ( )
Epeak [keV] : 22.8092 ( )
Norm@50keV : 1.40383E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.85 using 59 PHA bins.
# Reduced chi-squared = 1.247 for 56 degrees of freedom
# Null hypothesis probability = 1.009365e-01
Photon flux (15-150 keV) in 511.2 sec: 1.80322E-02 ( -0.0052107 0.005258 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.80089e-07 ( -1.40295e-07 1.69333e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.839804 ( -1.73705 0.24604 )
beta : -10.0000 ( 10 3.55271e-14 )
Epeak [keV] : 23.0486 ( -9.53704 11.2046 )
Norm@50keV : 2.70214E-02 ( -0.0270096 21.2682 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.87 using 59 PHA bins.
# Reduced chi-squared = 1.270 for 55 degrees of freedom
# Null hypothesis probability = 8.549074e-02
Photon flux (15-150 keV) in 511.2 sec: 1.80380E-02 ( 6.98196 -0.0050422 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.08359e-07 ( 0 0 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 1.50e-07
S(50-100 keV) = 9.29e-08
T90 vs. Hardness ratio plot
T90 = 1256 sec.
Hardness ratio (energy fluence ratio) = 0.619333
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.489073
Count Ratio (50-100 keV) / (15-25 keV) = 0.0109954
Mask shadow pattern
IMX = 4.577732624221472E-02, IMY = -2.736845303517174E-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:
119.000000 123.040000
167.000000 303.107900
592.000000 963.083700
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9862 -15.6344 0.4 36.3 -115.4 21.9903 27.4 0.5 Sco X-1
254.4609 35.3348 2252.8 47.0 -34.6 -0.0042 -0.0 0.5 Her X-1
255.9726 -37.8056 1.6 39.7 -154.9 4.1919 7.2 2.4 4U 1700-377
256.4832 -36.4387 5.4 38.4 -154.0 1.1658 2.1 2.5 GX 349+2
263.0214 -24.7295 5.6 25.9 -147.3 0.7663 2.1 1.2 GX 1+4
264.7329 -44.6023 3.5 42.0 -168.9 -1.8023 -3.3 9.1 4U 1735-44
268.4532 -1.3616 3.8 12.3 -79.2 1.2385 3.1 7.5 SW J1753.5-0127
270.2506 -25.0836 2.0 22.4 -161.0 2.2987 5.9 1.8 GX 5-1
270.2984 -25.7188 3.9 22.9 -161.9 1.1556 3.0 1.5 GRS 1758-258
274.0061 -14.0551 3.0 11.0 -151.9 1.3271 3.8 1.1 GX 17+2
275.8376 -30.2634 4.5 25.7 -176.6 0.9830 2.5 7.7 H1820-303
285.0659 -24.8406 4.9 20.5 162.0 1.0586 2.3 5.1 HT1900.1-2455
288.8021 10.9537 1.1 18.0 22.6 3.8342 10.8 0.5 GRS 1915+105
299.4551 35.2269 3.5 44.0 17.2 2.6645 3.3 6.8 Cyg X-1
308.2512 41.0327 8.0 52.6 20.9 -2.9573 -1.4 8.0 Cyg X-3
262.9216 -33.6776 4.5 33.0 -158.4 1.1762 2.6 10.0 GX 354-0
289.4597 -19.5849 2.7 17.2 143.9 1.5522 4.3 ------ UNKNOWN
289.2062 27.3137 3.2 33.3 9.0 1.4677 3.6 ------ UNKNOWN
276.2076 -58.8977 3.6 54.1 177.1 5.0712 3.2 ------ UNKNOWN
259.1403 34.7863 2.6 44.4 -30.6 3.2412 4.5 ------ UNKNOWN
249.3732 -25.8154 2.6 36.2 -134.0 2.5272 4.4 ------ UNKNOWN
UNKNOWN
UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
Plot creation:
Sat Aug 23 21:58:34 EDT 2014