batgrbproduct Analysis for Trigger=590503
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 Mar 6 18:57:09 EST 2014
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger590503/GCN5_download_cron
======================================================================
Trigger: 00590503 Segment: 000
BAT Trigger Time: 415754328.832 [s; MET]
Trigger Stop: 415754329.088 [s; MET]
UTC: 2014-03-05T23:18:37.108580 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 59.1298424896316 Dec: -48.8956950287102 [deg; J2000]
Catalogged Source?: YES
Point Source?: YES
GRB Indicated?: NO [ by BAT flight software ]
Image S/N Ratio: 5.81
Image Trigger?: NO
Rate S/N Ratio: 12.5299640861417 [ if not an image trigger ]
Image S/N Ratio: 5.81
Flight Position: [ source = BAT ]
RA: 59.1298424896316 Dec: -48.8956950287102 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 59.0581557356668 Dec: -48.9117777070312 [deg; J2000]
{ 03h 56m 14.0s , -48d 54' 42.4" }
+/- 3.9305824711306 [arcmin] (estimated 90% radius based on SNR)
+/- 2.3612949243576 [arcmin] (formal 1-sigma fit error)
SNR: 4.30421759512865
Angular difference between Flight and Ground position is 2.987431 arcmin
Partial Coding Fraction: 0.75 [ including projection effects ]
Duration
T90: 0.255999982357025 +/-
Measured from: 0
to: 0.255999982357025 [s; relative to TRIGTIME]
T50: 0.255999982357025 +/-
Measured from: 0
to: 0.255999982357025 [s; relative to TRIGTIME]
WARNING: battblocks failed. Used TDRSS fore/background intervals
Fluence
Peak Flux (peak 0.255999982357025 second)
Measured from: 2.98023223876953e-08
to: 0.256000012159348 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0
to: 0.255999982357025 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total -0.005569 0.002586 0.007738 0.026762
0.004688 0.005570 0.005663 0.007283 [error]
Peak -0.005569 0.002586 0.007738 0.026762
0.004688 0.005570 0.005663 0.007283 [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 4.97e-11 5.23e-10 4.97e-09 3.18e-07 2.07e-08 3.28e-07 erg/cm2
Error 2.81e-10 1.16e-09 5.15e-09 3.11e-07 1.83e-08 3.14e-07 erg/cm2
Peak flux Power-law 5.92e-03 3.25e-02 1.54e-01 3.07e+00 4.83e-01 3.27e+00 ph/cm2/s
Error 3.45e-02 7.58e-02 1.64e-01 2.92e+00 4.54e-01 3.04e+00 ph/cm2/s
Fluence Cutoff-PL 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 Cutoff-PL 9.32e-06 2.63e-03 1.58e-01 5.95e-01 9.99e-01 0.00e+00 ph/cm2/s
Error 1.46e-02 4.61e-02 1.81e-01 3.76e-01 5.89e+00 0.00e+00 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 -1.246 1.356 - - 1.85e-03 3.00e-03 79.100 57
CPL -9.989 0.000 167.7 219.1 7.45e-03 6.82e-02 77.510 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL -1.246 1.356 - - 1.85e-03 3.00e-03 79.100 57
CPL -9.989 0.000 167.7 219.1 7.45e-03 6.82e-02 77.510 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: 0.000000 sec.
T50 in the 50-300 keV band: 0.000000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 0.256 0.000 0.256
T90 0.256 0.000 0.256
T50 0.256 0.000 0.256
Peak 0.256 0.000 0.256
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
59.0582 -48.9118 0.0445 30.3 -30.3 0.0500 4.3 TRIG_00590503
------------------------------------------
Foreground time interval of the image:
0.000 0.256 (delta_t = 0.256 [sec])
Background time interval of the image:
-119.832 -54.435 (delta_t = 65.397 [sec])
-52.832 -8.832 (delta_t = 44.000 [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 0.000 sec. to 0.256 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.24623 ( -1.06391 1.64795 )
Norm@50keV : 1.85159E-03 ( -0.00185135 0.00415427 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 79.10 using 59 PHA bins.
# Reduced chi-squared = 1.388 for 57 degrees of freedom
# Null hypothesis probability = 2.799881e-02
Photon flux (15-150 keV) in 0.256 sec: 0.483435 ( -0.483435 0.424654 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.06835e-08 ( -2.06835e-08 1.58601e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 0.256 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -9.98863 ( )
Epeak [keV] : 167.686 ( -167.295 270.942 )
Norm@50keV : 7.44843E-03 ( -0.00787614 0.12855 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 77.51 using 59 PHA bins.
# Reduced chi-squared = 1.384 for 56 degrees of freedom
# Null hypothesis probability = 3.008923e-02
Photon flux (15-150 keV) in 0.256 sec: 0.594728 ( -0.375296 0.376827 ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 0.256 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -4.9498 -4.96138 )
beta : -10.0000 ( 10 20 )
Epeak [keV] : 215.709 ( )
Norm@50keV : 4.62324E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 78.15 using 59 PHA bins.
# Reduced chi-squared = 1.421 for 55 degrees of freedom
# Null hypothesis probability = 2.178390e-02
Photon flux (15-150 keV) in 0.256 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] : 199.357 ( )
R^2/D10^2 : 2.95568E-04 (-0.00030602 0.00602076)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 79.33 using 59 PHA bins.
# Reduced chi-squared = 1.392 for 57 degrees of freedom
# Null hypothesis probability = 2.692099e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 0.000e+00 0.000e+00
25- 50 0.000e+00 0.000e+00
50-150 0.000e+00 0.000e+00
15-150 0.000e+00 0.000e+00
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 7.00000 (-7 -7)
Norm : 0.0 (0 0)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 84.36 using 59 PHA bins.
# Reduced chi-squared = 1.480 for 57 degrees of freedom
# Null hypothesis probability = 1.075051e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 0.000e+00 0.000e+00
25- 50 0.000e+00 0.000e+00
50-150 0.000e+00 0.000e+00
15-150 0.000e+00 0.000e+00
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 199.363 ( )
R1^2/D10^2 : 3.07669E-04 (-0.000224425 0.00598447)
kT2 [keV] : 10.0000 (-10 -10)
R2^2/D10^2 : 0.0 (0 8703.66)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 84.36 using 59 PHA bins.
#Fit statistic : Chi-Squared = 79.32 using 59 PHA bins.
# Reduced chi-squared = 1.534 for 55 degrees of freedom
# Reduced chi-squared = 1.442 for 55 degrees of freedom
# Null hypothesis probability = 6.642525e-03
# Null hypothesis probability = 1.757704e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 0.000e+00 0.000e+00
25- 50 0.000e+00 0.000e+00
50-150 0.000e+00 0.000e+00
15-150 0.000e+00 0.000e+00
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 0.256 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.24623 ( -1.06391 1.64795 )
Norm@50keV : 1.85159E-03 ( -0.00185135 0.00415427 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 79.10 using 59 PHA bins.
# Reduced chi-squared = 1.388 for 57 degrees of freedom
# Null hypothesis probability = 2.799881e-02
Photon flux (15-150 keV) in 0.256 sec: 0.483435 ( -0.483435 0.424654 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.06835e-08 ( -2.06835e-08 1.58601e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 0.256 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -9.98863 ( )
Epeak [keV] : 167.686 ( -167.295 270.942 )
Norm@50keV : 7.44843E-03 ( -0.00787614 0.128566 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 77.51 using 59 PHA bins.
# Reduced chi-squared = 1.384 for 56 degrees of freedom
# Null hypothesis probability = 3.008923e-02
Photon flux (15-150 keV) in 0.256 sec: 0.594728 ( -0.375296 0.376827 ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 0.256 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -4.9498 -4.96138 )
beta : -10.0000 ( 10 2.82298e-09 )
Epeak [keV] : 215.709 ( )
Norm@50keV : 4.62324E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 78.15 using 59 PHA bins.
# Reduced chi-squared = 1.421 for 55 degrees of freedom
# Null hypothesis probability = 2.178390e-02
Photon flux (15-150 keV) in 0.256 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] : 199.357 ( )
R^2/D10^2 : 2.95568E-04 (-0.00030602 0.00602076)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 79.33 using 59 PHA bins.
# Reduced chi-squared = 1.392 for 57 degrees of freedom
# Null hypothesis probability = 2.692099e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 0.000e+00 0.000e+00
25- 50 0.000e+00 0.000e+00
50-150 0.000e+00 0.000e+00
15-150 0.000e+00 0.000e+00
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 7.00000 (-7 -7)
Norm : 0.0 (0 0)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 84.36 using 59 PHA bins.
# Reduced chi-squared = 1.480 for 57 degrees of freedom
# Null hypothesis probability = 1.075051e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 0.000e+00 0.000e+00
25- 50 0.000e+00 0.000e+00
50-150 0.000e+00 0.000e+00
15-150 0.000e+00 0.000e+00
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 199.363 ( )
R1^2/D10^2 : 3.07669E-04 (-0.000224425 0.00598447)
kT2 [keV] : 10.0000 (-10 -10)
R2^2/D10^2 : 0.0 (0 8703.66)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 84.36 using 59 PHA bins.
#Fit statistic : Chi-Squared = 79.32 using 59 PHA bins.
# Reduced chi-squared = 1.534 for 55 degrees of freedom
# Reduced chi-squared = 1.442 for 55 degrees of freedom
# Null hypothesis probability = 6.642525e-03
# Null hypothesis probability = 1.757704e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 0.000e+00 0.000e+00
25- 50 0.000e+00 0.000e+00
50-150 0.000e+00 0.000e+00
15-150 0.000e+00 0.000e+00
Plot creation:
Thu Mar 6 19:27:38 EST 2014