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Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
272.1715 -20.4479 0.0218 10.8 38.2 0.0848 8.8 TRIG_00535747
------------------------------------------
Foreground time interval of the image:
-0.052 0.684 (delta_t = 0.736 [sec])
Background time interval of the image:
-239.036 -0.052 (delta_t = 238.984 [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 0.064000
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 0.064000
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 0.064000
SN=5 or 10 sec. binning (whichever binning is satisfied first)
SN=5 or 10 sec. binning (T < 200 sec)
The mask-weighted light curves based on cleaned DPHs
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 -0.052 sec. to 0.684 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.38082 ( -0.38609 0.453828 )
Norm@50keV : 4.60883E-03 ( -0.00146683 0.00143961 )
------------------------------------------------------------
# Chi-Squared = 69.81 using 59 PHA bins.
# Reduced chi-squared = 1.225 for 57 degrees of freedom
# Null hypothesis probability = 1.187434e-01
Photon flux (15-150 keV) in 0.736 sec: 0.843271 ( -0.172188 0.172198 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.29476e-08 ( -8.14406e-09 8.60413e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.052 sec. to 0.684 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.21291 ( -2.25034 0.789102 )
Epeak [keV] : 25.7694 ( )
Norm@50keV : 2.38676E-02 ( )
------------------------------------------------------------
# Chi-Squared = 68.06 using 59 PHA bins.
# Reduced chi-squared = 1.215 for 56 degrees of freedom
# Null hypothesis probability = 1.294594e-01
Photon flux (15-150 keV) in 0.736 sec: 0.823877 ( -0.169391 0.172489 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.08688e-08 ( -9.1487e-09 1.70359e-08 ) ergs/cm2
Band function
Time interval is from -0.052 sec. to 0.684 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.21160 ( 1.2265 5.11697 )
beta : -10.00000 ( 1.45582e+08 1.45582e+08 )
Epeak [keV] : 25.7723 ( -24.2831 17.0398 )
Norm@50keV : 2.39128E-02 ( -0.0238594 0.647868 )
------------------------------------------------------------
# Chi-Squared = 68.06 using 59 PHA bins.
# Reduced chi-squared = 1.238 for 55 degrees of freedom
# Null hypothesis probability = 1.110224e-01
Photon flux (15-150 keV) in 0.736 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] : 8.08676 (-1.84066 2.31201)
R^2/D10^2 : 0.893760 (-0.567942 1.66408)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared = 71.94 using 59 PHA bins.
# Reduced chi-squared = 1.262 for 57 degrees of freedom
# Null hypothesis probability = 8.779913e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.841e-09 3.010e-09
25- 50 1.398e-08 5.966e-09
50-150 3.803e-09 2.282e-09
15-150 2.562e-08 8.508e-09
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 38.3227 (-14.7072 28.4454)
Norm : 5.68523 (-1.81828 3.01023)
------------------------------------------------------------
# Chi-Squared = 68.09 using 59 PHA bins.
# Reduced chi-squared = 1.195 for 57 degrees of freedom
# Null hypothesis probability = 1.492635e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.466e-09 2.542e-09
25- 50 1.222e-08 3.957e-09
50-150 9.016e-09 5.174e-09
15-150 3.070e-08 1.042e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.29199 (-4.29181 20.712)
R1^2/D10^2 : 7.59051 (-6.61591 -7.58686)
kT2 [keV] : 12.8617 (-12.8637 12.1774)
R2^2/D10^2 : 9.94449E-02 (-0.0901472 0.70612)
------------------------------------------------------------
# Chi-Squared = 67.57 using 59 PHA bins.
# Reduced chi-squared = 1.229 for 55 degrees of freedom
# Null hypothesis probability = 1.188894e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.644e-09 5.572e-09
25- 50 1.185e-08 6.138e-09
50-150 9.143e-09 6.020e-09
15-150 3.064e-08 1.577e-08
Peak spectrum fit
Power-law model
Time interval is from -0.184 sec. to 0.816 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.35730 ( -0.417996 0.491003 )
Norm@50keV : 3.30245E-03 ( -0.00116307 0.00116266 )
------------------------------------------------------------
# Chi-Squared = 73.44 using 59 PHA bins.
# Reduced chi-squared = 1.288 for 57 degrees of freedom
# Null hypothesis probability = 7.026610e-02
Photon flux (15-150 keV) in 1 sec: 0.596095 ( -0.143138 0.143172 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.18955e-08 ( -9.03346e-09 9.63069e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.184 sec. to 0.816 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -9.40361E-02 ( -3.90874 2.04392 )
Epeak [keV] : 31.4793 ( )
Norm@50keV : 0.110390 ( )
------------------------------------------------------------
# Chi-Squared = 68.86 using 59 PHA bins.
# Reduced chi-squared = 1.230 for 56 degrees of freedom
# Null hypothesis probability = 1.160068e-01
Photon flux (15-150 keV) in 1 sec: 0.575523 ( -0.140264 0.141253 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.81481e-08 ( -7.4756e-09 9.325e-09 ) ergs/cm2
Band function
Time interval is from -0.184 sec. to 0.816 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.133832 ( -1.43205 0.237545 )
beta : -9.99999 ( 512210 512220 )
Epeak [keV] : 31.5339 ( -25.9513 10.4903 )
Norm@50keV : 0.116954 ( -0.153232 37.1515 )
------------------------------------------------------------
# Chi-Squared = 68.86 using 59 PHA bins.
# Reduced chi-squared = 1.252 for 55 degrees of freedom
# Null hypothesis probability = 9.902954e-02
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] : 8.41005 (-1.7738 2.16709)
R^2/D10^2 : 0.575828 (-0.34945 0.918719)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared = 69.32 using 59 PHA bins.
# Reduced chi-squared = 1.216 for 57 degrees of freedom
# Null hypothesis probability = 1.268681e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.624e-09 3.582e-09
25- 50 1.453e-08 7.084e-09
50-150 4.484e-09 2.810e-09
15-150 2.663e-08 1.193e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 37.3582 (-14.5268 29.4246)
Norm : 4.17909 (-1.44392 2.3471)
------------------------------------------------------------
# Chi-Squared = 70.18 using 59 PHA bins.
# Reduced chi-squared = 1.231 for 57 degrees of freedom
# Null hypothesis probability = 1.127806e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.367e-09 3.445e-09
25- 50 1.195e-08 5.339e-09
50-150 8.567e-09 5.709e-09
15-150 2.989e-08 1.281e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.00617 (-4.00092 -4.00092)
R1^2/D10^2 : 3.57013 (-3.59056 -3.59056)
kT2 [keV] : 9.71185 (-9.70323 -9.70323)
R2^2/D10^2 : 0.274487 (-0.275868 1.04427)
------------------------------------------------------------
# Chi-Squared = 68.69 using 59 PHA bins.
# Reduced chi-squared = 1.249 for 55 degrees of freedom
# Null hypothesis probability = 1.016000e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.488e-09 4.441e-09
25- 50 1.362e-08 7.670e-09
50-150 5.976e-09 3.633e-09
15-150 2.809e-08 1.564e-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: 2.38082 ( -0.38609 0.453828 )
Norm@50keV : 4.60883E-03 ( -0.00146683 0.00143961 )
------------------------------------------------------------
# Chi-Squared = 69.81 using 59 PHA bins.
# Reduced chi-squared = 1.225 for 57 degrees of freedom
# Null hypothesis probability = 1.187434e-01
Photon flux (15-150 keV) in 0.736 sec: 0.843271 ( -0.172188 0.172198 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.29476e-08 ( -8.14406e-09 8.60413e-09 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.21291 ( -2.25034 0.789102 )
Epeak [keV] : 25.7694 ( )
Norm@50keV : 2.38676E-02 ( )
------------------------------------------------------------
# Chi-Squared = 68.06 using 59 PHA bins.
# Reduced chi-squared = 1.215 for 56 degrees of freedom
# Null hypothesis probability = 1.294594e-01
Photon flux (15-150 keV) in 0.736 sec: 0.823877 ( -0.169391 0.172489 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.08688e-08 ( -9.1487e-09 1.69488e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.21160 ( 1.2265 5.12063 )
beta : -10.00000 ( 1.45582e+08 1.45582e+08 )
Epeak [keV] : 25.7723 ( -24.3969 17.0514 )
Norm@50keV : 2.39128E-02 ( -0.0238594 0.647868 )
------------------------------------------------------------
# Chi-Squared = 68.06 using 59 PHA bins.
# Reduced chi-squared = 1.238 for 55 degrees of freedom
# Null hypothesis probability = 1.110224e-01
Photon flux (15-150 keV) in 0.736 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) = 1.07763e-08
S(50-100 keV) = 8.27654e-09
T90 vs. Hardness ratio plot
T90 = 0.671999990940094 sec.
Hardness ratio (energy fluence ratio) = 0.768032
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.817848
Count Ratio (50-100 keV) / (15-25 keV) = 0.364788
Mask shadow pattern
IMX = 1.499820914632959E-01, IMY = -1.179876071362596E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.064000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.064000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.064000
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:
-239.036000 -0.052000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9628 -15.6472 0.3 23.8 -53.1 9.8570 39.3 1.0 Sco X-1
255.9309 -37.8613 2.0 11.7 -131.7 1.3530 5.8 2.8 4U 1700-377
256.4685 -36.4862 3.2 10.5 -127.6 0.8034 3.6 4.1 GX 349+2
263.1484 -24.5859 5.6 5.7 -21.4 0.4707 2.0 12.2 GX 1+4
264.5222 -44.3117 0.0 14.7 -170.5 0.2939 1.4 12.6 4U 1735-44
268.3339 -1.4884 4.3 28.3 10.5 0.6510 2.7 3.0 SW J1753.5-0127
270.2693 -25.0641 1.6 6.0 46.1 1.6373 7.3 1.2 GX 5-1
270.4743 -25.7704 9.0 5.6 52.2 0.2823 1.3 9.4 GRS 1758-258
273.9896 -13.9137 5.4 17.4 32.4 0.4627 2.2 7.4 GX 17+2
275.8345 -30.3748 2.7 8.6 102.6 0.8799 4.3 4.7 H1820-303
284.9164 -24.8001 6.9 17.5 83.8 0.4760 1.7 9.7 HT1900.1-2455
288.8943 10.9726 3.5 46.3 37.4 2.6715 3.3 5.9 GRS 1915+105
262.8265 -33.9936 8.4 5.1 -143.7 0.2964 1.4 12.5 GX 354-0
266.3213 -26.4066 0.6 3.3 11.1 3.9821 17.8 ------ UNKNOWN
266.5465 -32.2615 1.8 2.6 174.6 1.4137 6.5 ------ UNKNOWN
239.4695 -52.9463 2.5 30.3 -142.3 1.2206 4.6 ------ UNKNOWN
189.2756 -74.5810 3.2 58.0 -156.8 5.0679 3.6 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-0.052000 0.684000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.8253 -15.6649 8.2 23.9 -53.4 0.0161 1.4 9.0 Sco X-1
256.0268 -37.6962 3.8 11.5 -131.3 0.0292 3.0 9.1 4U 1700-377
256.5513 -36.2749 15.1 10.3 -126.9 0.0072 0.8 10.5 GX 349+2
262.8527 -24.8587 6.0 5.6 -25.1 0.0191 1.9 10.9 GX 1+4
264.5222 -44.3117 0.0 14.7 -170.5 0.0080 0.8 12.6 4U 1735-44
268.3968 -1.3634 6.5 28.4 10.6 0.0198 1.8 5.6 SW J1753.5-0127
270.0987 -24.9498 0.0 6.0 44.3 0.0182 1.9 12.7 GX 5-1
270.4179 -25.5846 3.8 5.7 50.5 0.0300 3.1 11.4 GRS 1758-258
274.0372 -14.1128 7.3 17.3 32.8 -0.0163 -1.6 4.9 GX 17+2
276.0089 -30.2026 7.1 8.7 101.4 -0.0164 -1.6 10.8 H1820-303
284.9008 -25.0454 5.5 17.4 84.6 0.0243 2.1 10.5 HT1900.1-2455
288.6963 10.8876 4.6 46.1 37.2 -0.0764 -2.5 6.9 GRS 1915+105
263.1592 -33.7119 8.7 4.7 -144.7 0.0129 1.3 11.2 GX 354-0
272.1714 -20.4479 1.3 10.8 38.2 0.0848 8.8 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
42.164600 807.474000
808.964000 963.009000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9904 -15.6344 0.3 26.2 -82.1 37.7921 39.6 0.7 Sco X-1
254.4599 35.3450 53.5 58.2 -15.0 0.7948 0.2 0.2 Her X-1
255.9935 -37.8553 1.6 22.4 -142.9 4.7082 7.2 0.7 4U 1700-377
256.4373 -36.4263 2.2 21.1 -140.9 3.5295 5.3 0.2 GX 349+2
262.8405 -24.8871 7.8 9.7 -117.4 1.0155 1.5 12.5 GX 1+4
264.9373 -44.3087 0.0 24.6 -165.7 0.7262 1.1 11.9 4U 1735-44
268.3947 -1.4357 4.0 19.3 -9.5 1.7657 2.9 1.9 SW J1753.5-0127
270.3347 -25.0338 1.2 4.9 -158.8 6.3154 9.4 3.9 GX 5-1
270.3765 -25.8036 4.1 5.6 -161.8 1.8504 2.8 5.4 GRS 1758-258
273.8623 -13.9983 2.7 6.6 16.6 2.6587 4.2 8.7 GX 17+2
275.9002 -30.3293 3.0 10.5 163.7 2.3653 3.8 2.6 H1820-303
284.8549 -24.7936 0.0 12.5 114.7 0.1546 0.2 12.5 HT1900.1-2455
288.7812 10.9640 2.9 35.4 31.0 3.7878 4.0 1.5 GRS 1915+105
262.8146 -33.7919 5.8 15.7 -148.4 1.3080 2.0 9.1 GX 354-0
312.1101 -37.2472 2.8 38.5 126.6 6.9048 4.1 ------ UNKNOWN
286.5641 -74.0022 4.6 54.2 177.0 6.6972 2.5 ------ UNKNOWN
266.5324 -32.2319 1.5 12.8 -156.3 5.0617 7.5 ------ UNKNOWN
266.2892 -26.4070 0.5 8.0 -137.5 14.6362 22.5 ------ UNKNOWN
239.7970 -67.2438 2.9 51.1 -162.7 6.9091 4.0 ------ UNKNOWN
218.3421 -69.8516 3.8 58.8 -159.1 14.7311 3.0 ------ UNKNOWN
244.2764 31.8974 3.3 58.7 -25.8 14.1614 3.5 ------ UNKNOWN
Plot creation:
Fri Oct 12 00:51:46 EDT 2012