batgrbproduct Analysis for Trigger=570465
Analysis Summary
Notes:
- 1) No attempt has been made to eliminate the non-significant decimal places.
- 2) This batgrbproduct analysis is done of the amount of data for this trigger downloaded to date.
- 3) This batgrbproduct analysis is using the flight position for the mask-weighting calculation.
- 4) This page will be updated for up to 10 downlinks after the trigger.
======================================================================
BAT GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.46
Process Start Time (local time): Thu Sep 12 18:20:49 EDT 2013
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger570465/GCN5_download_cron
======================================================================
Trigger: 00570465 Segment: 000
BAT Trigger Time: 400667708.956 [s; MET]
Trigger Stop: 400667709.02 [s; MET]
UTC: 2013-09-12T08:34:57.933280 [includes UTCF correction]
Where From?: (*SHORT BURST*) TDRSS scaled map message
BAT
RA: 47.6148478284115 Dec: 13.9744257814072 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.18
Image Trigger?: NO
Rate S/N Ratio: 46.2385120867876 [ if not an image trigger ]
Image S/N Ratio: 7.18
Flight Position: [ source = BAT ]
RA: 47.6148478284115 Dec: 13.9744257814072 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 47.606484658361 Dec: 13.9987340564999 [deg; J2000]
{ 03h 10m 25.6s , +13d 59' 55.4" }
+/- 1.64667007962307 [arcmin] (estimated 90% radius based on SNR)
+/- 0.531066664055684 [arcmin] (formal 1-sigma fit error)
SNR: 14.916962160659
Angular difference between Flight and Ground position is 1.537627 arcmin
Partial Coding Fraction: 0.3125 [ including projection effects ]
Duration
T90: 0.283999919891357 +/- 0.0288444686585799
Measured from: 0.0160001516342163
to: 0.300000071525574 [s; relative to TRIGTIME]
T50: 0.20799994468689 +/- 0.0268327901402435
Measured from: 0.0400001406669617
to: 0.248000085353851 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.335999965667725
to: 0.664000034332275 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0.00400000810623169
to: 0.320000052452087 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.050285 0.077142 0.076633 0.033112
0.006976 0.008368 0.009050 0.007698 [error]
Peak 0.053168 0.089144 0.076277 0.033722
0.011155 0.011894 0.011965 0.010703 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
=== Fluence/Peak Flux Summary ===
Model Band1 Band2 Band3 Band4 Band5 Total
15-25 25-50 50-100 100-350 15-150 15-350 keV
Fluence Power-law 1.67e-08 3.68e-08 6.39e-08 2.58e-07 1.75e-07 3.75e-07 erg/cm2
Error 3.47e-09 4.55e-09 8.55e-09 7.77e-08 2.16e-08 8.30e-08 erg/cm2
Peak flux Power-law 6.00e-01 6.93e-01 5.75e-01 8.02e-01 2.16e+00 2.67e+00 ph/cm2/s
Error 1.69e-01 1.19e-01 9.67e-02 2.88e-01 3.28e-01 4.01e-01 ph/cm2/s
Fluence Cutoff-PL 1.69e-08 3.69e-08 6.37e-08 2.54e-07 1.74e-07 3.71e-07 erg/cm2
Error 3.45e-09 4.64e-09 8.92e-09 9.17e-08 2.16e-08 9.13e-08 erg/cm2
Peak flux Cutoff-PL 5.72e-01 7.02e-01 5.89e-01 6.56e-01 2.14e+00 2.52e+00 ph/cm2/s
Error 1.52e-01 1.28e-01 1.13e-01 3.60e-01 2.53e-01 5.43e-01 ph/cm2/s
Fluence Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 erg/cm2
Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 erg/cm2
Peak flux Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 ph/cm2/s
Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 ph/cm2/s
=== Time-averaged spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.204 0.195 - - 5.46e-02 5.98e-03 46.510 57
CPL 1.200 0.403 10000.0 0.0 5.48e-02 0.00e+00 46.520 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.269 0.256 - - 1.82e-02 2.64e-03 67.830 57
CPL 2.079 0.000 29.5 0.0 4.21e-03 0.00e+00 66.660 56
Model : spectral model: simple power-law (PL) and cutoff power-law (CPL)
Ph_index : photon index: E^-{Ph_index} (minus sign is not included in the index)
Ph_90err : 90% error of the photon index
Epeak : Epeak in keV
Epeak_90err: 90% error of Epeak
Norm : normalization at 50 keV in PL model and at 1 keV in CPL model
Nomr_90err : 90% error of the normalization
chi2 : Chi-Squared
dof : degree of freedom
=== T90/T50 calculation in the 50-300 keV band (BATSE band) using 64 ms lc ===
T90 in the 50-300 keV band: 0.320000 sec.
T50 in the 50-300 keV band: 0.192000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 0.316 0.004 0.320
T90 0.284 0.016 0.300
T50 0.208 0.040 0.248
Peak 1.000 -0.336 0.664
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
47.6065 +13.9987 0.0129 47.7 -22.0 0.2521 14.9 TRIG_00570465
------------------------------------------
Foreground time interval of the image:
0.004 0.320 (delta_t = 0.316 [sec])
Background time interval of the image:
-60.956 0.004 (delta_t = 60.960 [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
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 0.004 sec. to 0.320 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.20450 ( -0.195001 0.195417 )
Norm@50keV : 5.45678E-02 ( -0.00597609 0.00597422 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.51 using 59 PHA bins.
# Reduced chi-squared = 0.8160 for 57 degrees of freedom
# Null hypothesis probability = 8.380052e-01
Photon flux (15-150 keV) in 0.316 sec: 6.40923 ( -0.717676 0.71887 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.74721e-07 ( -2.15692e-08 2.16943e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.004 sec. to 0.320 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.20006 ( -0.562416 0.244572 )
Epeak [keV] : 1.00000E+04 ( )
Norm@50keV : 5.48303E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.52 using 59 PHA bins.
# Reduced chi-squared = 0.8307 for 56 degrees of freedom
# Null hypothesis probability = 8.127156e-01
Photon flux (15-150 keV) in 0.316 sec: 6.41148 ( -0.71879 0.7143 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.74259e-07 ( -2.10873e-08 2.21563e-08 ) ergs/cm2
Band function
Time interval is from 0.004 sec. to 0.320 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.890911 ( 0.890906 5.8899 )
beta : -1.20683 ( 1.20683 0.197599 )
Epeak [keV] : 78.5913 ( -78.6457 895.232 )
Norm@50keV : 9.65428E-02 ( -0.0401978 3.3858e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.51 using 59 PHA bins.
# Reduced chi-squared = 0.8457 for 55 degrees of freedom
# Null hypothesis probability = 7.853430e-01
Photon flux (15-150 keV) in 0.316 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] : 19.9033 (-3.22583 3.94347)
R^2/D10^2 : 0.297215 (-0.129621 0.228723)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 72.12 using 59 PHA bins.
# Reduced chi-squared = 1.265 for 57 degrees of freedom
# Null hypothesis probability = 8.559105e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.186e-09 1.616e-09
25- 50 3.568e-08 6.303e-09
50-150 1.047e-07 2.207e-08
15-150 1.476e-07 2.378e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 ( )
Norm : 26.2600 (-2.9386 2.93848)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.30 using 59 PHA bins.
# Reduced chi-squared = 0.9877 for 57 degrees of freedom
# Null hypothesis probability = 5.013264e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.066e-08 1.151e-08
25- 50 3.974e-08 2.187e-08
50-150 8.716e-08 4.794e-08
15-150 1.476e-07 8.094e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.48785 (-2.23975 2.72953)
R1^2/D10^2 : 4.77408 (-3.04647 10.3626)
kT2 [keV] : 36.3543 (-9.67321 24.0409)
R2^2/D10^2 : 3.76915E-02 (-0.0284045 0.0489958)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 45.36 using 59 PHA bins.
# Reduced chi-squared = 0.8247 for 55 degrees of freedom
# Null hypothesis probability = 8.198511e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.667e-08 8.418e-09
25- 50 3.693e-08 1.501e-08
50-150 1.263e-07 6.603e-08
15-150 1.799e-07 8.845e-08
Peak spectrum fit
Power-law model
Time interval is from -0.336 sec. to 0.664 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.26916 ( -0.257214 0.255414 )
Norm@50keV : 1.81824E-02 ( -0.00264402 0.00264399 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 67.83 using 59 PHA bins.
# Reduced chi-squared = 1.190 for 57 degrees of freedom
# Null hypothesis probability = 1.542923e-01
Photon flux (15-150 keV) in 1 sec: 2.15737 ( -0.327112 0.328869 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.81065e-07 ( -2.86573e-08 2.88727e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.336 sec. to 0.664 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.07928 ( )
Epeak [keV] : 29.5251 ( )
Norm@50keV : 4.20674E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.66 using 59 PHA bins.
# Reduced chi-squared = 1.190 for 56 degrees of freedom
# Null hypothesis probability = 1.558363e-01
Photon flux (15-150 keV) in 1 sec: 2.13908 ( -0.33606 0.16947 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.79642e-07 ( -2.9706e-08 2.9617e-08 ) ergs/cm2
Band function
Time interval is from -0.336 sec. to 0.664 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.02225 ( -0.512426 0.686851 )
beta : -10.0000 ( 10 10 )
Epeak [keV] : 222.078 ( -138.072 -222.078 )
Norm@50keV : 2.37171E-02 ( -0.00342992 0.0391437 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 67.70 using 59 PHA bins.
# Reduced chi-squared = 1.231 for 55 degrees of freedom
# Null hypothesis probability = 1.168739e-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] : 19.2562 (-3.80062 4.94697)
R^2/D10^2 : 0.109807 (-0.0574045 0.118601)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 79.70 using 59 PHA bins.
# Reduced chi-squared = 1.398 for 57 degrees of freedom
# Null hypothesis probability = 2.521879e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.964e-09 2.589e-09
25- 50 3.867e-08 9.530e-09
50-150 1.056e-07 2.917e-08
15-150 1.523e-07 3.290e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 ( )
Norm : 9.00450 (-1.32904 1.32887)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.46 using 59 PHA bins.
# Reduced chi-squared = 1.254 for 57 degrees of freedom
# Null hypothesis probability = 9.417070e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.243e-08 1.283e-08
25- 50 4.315e-08 2.477e-08
50-150 9.464e-08 5.260e-08
15-150 1.602e-07 9.055e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.13863 (-2.72206 3.35225)
R1^2/D10^2 : 1.24118 (-0.8393 2.81318)
kT2 [keV] : 34.9609 (-11.0071 32.9848)
R2^2/D10^2 : 1.29472E-02 (-0.0107533 0.0319754)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.93 using 59 PHA bins.
# Reduced chi-squared = 1.199 for 55 degrees of freedom
# Null hypothesis probability = 1.485231e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.730e-08 9.415e-09
25- 50 4.179e-08 2.297e-08
50-150 1.249e-07 6.885e-08
15-150 1.840e-07 9.450e-08
Plot creation:
Thu Sep 12 18:32:24 EDT 2013