batgrbproduct Analysis for Trigger=603587
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): Mon Jul 7 07:20:44 EDT 2014
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger603587/GCN5_download_cron
======================================================================
Trigger: 00603587 Segment: 000
BAT Trigger Time: 426368025.408 [s; MET]
Trigger Stop: 426368026.432 [s; MET]
UTC: 2014-07-06T19:33:33.176540 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 49.3058025750973 Dec: -38.059433655106 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 9.95
Image Trigger?: NO
Rate S/N Ratio: 17.464249196573 [ if not an image trigger ]
Image S/N Ratio: 9.95
Flight Position: [ source = BAT ]
RA: 49.3058025750973 Dec: -38.059433655106 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 49.2692204394564 Dec: -38.0579032177481 [deg; J2000]
{ 03h 17m 04.6s , -38d 03' 28.5" }
+/- 1.06269685900351 [arcmin] (estimated 90% radius based on SNR)
+/- 0.383711962210887 [arcmin] (formal 1-sigma fit error)
SNR: 27.886285545116
Angular difference between Flight and Ground position is 1.730680 arcmin
Partial Coding Fraction: 0.7734375 [ including projection effects ]
Duration
T90: 48.3039999604225 +/- 4.27850444310849
Measured from: -14.3719998598099
to: 33.9320001006126 [s; relative to TRIGTIME]
T50: 29.6719999313354 +/- 1.20490995244448
Measured from: -2.33599984645844
to: 27.336000084877 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.11599999666214
to: 0.88400000333786 [s; relative to TRIGTIME]
Total Fluence
Measured from: -21.2639999985695
to: 39.5519999861717 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.044207 1.300721 0.838200 0.087942
0.052206 0.053844 0.046350 0.038931 [error]
Peak 0.052815 0.074747 0.061800 0.019511
0.007553 0.008187 0.006975 0.005335 [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 3.53e-07 5.52e-07 6.49e-07 1.48e-06 1.99e-06 3.03e-06 erg/cm2
Error 2.96e-08 2.80e-08 4.70e-08 2.27e-07 1.10e-07 2.65e-07 erg/cm2
Peak flux Power-law 5.60e-01 5.80e-01 4.24e-01 4.99e-01 1.76e+00 2.06e+00 ph/cm2/s
Error 1.08e-01 6.92e-02 5.75e-02 1.39e-01 1.97e-01 2.29e-01 ph/cm2/s
Fluence Cutoff-PL 3.36e-07 5.69e-07 6.56e-07 9.13e-07 1.93e-06 2.47e-06 erg/cm2
Error 3.52e-08 3.41e-08 4.96e-08 4.27e-07 1.25e-07 5.93e-07 erg/cm2
Peak flux Cutoff-PL 5.61e-01 5.80e-01 4.24e-01 4.93e-01 1.76e+00 2.06e+00 ph/cm2/s
Error 1.08e-01 7.43e-02 5.91e-02 2.02e-01 1.97e-01 2.87e-01 ph/cm2/s
Fluence Band 3.31e-07 5.72e-07 6.39e-07 1.30e-06 1.95e-06 2.85e-06 erg/cm2
Error 3.76e-08 -------- -------- -------- -------- -------- erg/cm2
Peak flux Band -------- -------- -------- -------- -------- -------- ph/cm2/s
Error -------- -------- -------- -------- -------- -------- ph/cm2/s
=== Time-averaged spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.766 0.093 - - 3.54e-03 1.89e-04 52.880 57
CPL 1.456 0.364 84.1 -30.2 5.13e-03 2.28e-03 50.620 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.451 0.189 - - 1.43e-02 1.58e-03 60.730 57
CPL 1.454 0.431 9999.4 0.0 1.43e-02 1.47e-02 60.740 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: 45.568000 sec.
T50 in the 50-300 keV band: 16.256000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 60.816 -21.264 39.552
T90 48.304 -14.372 33.932
T50 29.672 -2.336 27.336
Peak 1.000 -0.116 0.884
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
49.2692 -38.0579 0.0069 28.6 -144.9 2.2774 27.9 TRIG_00603587
------------------------------------------
Foreground time interval of the image:
-21.264 12.393 (delta_t = 33.657 [sec])
Background time interval of the image:
-239.408 -21.264 (delta_t = 218.144 [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 -21.264 sec. to 39.552 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.76636 ( -0.0924612 0.093627 )
Norm@50keV : 3.54088E-03 ( -0.000189554 0.000188387 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.88 using 59 PHA bins.
# Reduced chi-squared = 0.9277 for 57 degrees of freedom
# Null hypothesis probability = 6.302584e-01
Photon flux (15-150 keV) in 60.82 sec: 0.481708 ( -0.0248809 0.024929 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.98543e-06 ( -1.09393e-07 1.1002e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -21.264 sec. to 39.552 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.45594 ( -0.384143 0.343684 )
Epeak [keV] : 84.0980 ( -23.7319 -84.098 )
Norm@50keV : 5.12768E-03 ( -0.00165967 0.00289903 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.62 using 59 PHA bins.
# Reduced chi-squared = 0.9040 for 56 degrees of freedom
# Null hypothesis probability = 6.778544e-01
Photon flux (15-150 keV) in 60.82 sec: 0.472967 ( -0.026683 0.026697 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.93293e-06 ( -1.24973e-07 1.25022e-07 ) ergs/cm2
Band function
Time interval is from -21.264 sec. to 39.552 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.45596 ( -0.285873 0.312114 )
beta : -10.0000 ( 10 1.77636e-15 )
Epeak [keV] : 84.0848 ( -20.8292 -84.0848 )
Norm@50keV : 5.12672E-03 ( -0.00166076 0.0029 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.62 using 59 PHA bins.
# Reduced chi-squared = 0.9204 for 55 degrees of freedom
# Null hypothesis probability = 6.423924e-01
Photon flux (15-150 keV) in 60.82 sec: 0.472548 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.94729e-06 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 12.7894 ( )
R^2/D10^2 : 8.89146E-02 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 140.96 using 59 PHA bins.
# Reduced chi-squared = 2.4729 for 57 degrees of freedom
# Null hypothesis probability = 4.604778e-09
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.876e-07 1.776e-08
25- 50 6.348e-07 3.363e-08
50-150 6.501e-07 7.624e-08
15-150 1.473e-06 8.363e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 109.752 (-18.86 35.2753)
Norm : 2.08727 (-0.156454 0.144266)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.37 using 59 PHA bins.
# Reduced chi-squared = 0.9013 for 57 degrees of freedom
# Null hypothesis probability = 6.853051e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.315e-07 2.977e-08
25- 50 5.837e-07 3.771e-08
50-150 9.953e-07 2.758e-07
15-150 1.911e-06 2.935e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.24100 (-1.04669 1.15865)
R1^2/D10^2 : 0.829051 (-0.370022 0.817477)
kT2 [keV] : 22.1839 (-3.27862 4.95962)
R2^2/D10^2 : 9.08085E-03 (-0.00489508 0.00805455)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.67 using 59 PHA bins.
# Reduced chi-squared = 0.9577 for 55 degrees of freedom
# Null hypothesis probability = 5.640620e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.257e-07 6.122e-08
25- 50 5.653e-07 7.697e-08
50-150 1.011e-06 2.059e-07
15-150 1.902e-06 3.017e-07
Peak spectrum fit
Power-law model
Time interval is from -0.116 sec. to 0.884 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.45099 ( -0.187981 0.189107 )
Norm@50keV : 1.42511E-02 ( -0.00157904 0.00157317 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.73 using 59 PHA bins.
# Reduced chi-squared = 1.066 for 57 degrees of freedom
# Null hypothesis probability = 3.429267e-01
Photon flux (15-150 keV) in 1 sec: 1.75669 ( -0.196894 0.197252 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.36347e-07 ( -1.64966e-08 1.66014e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.116 sec. to 0.884 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.45391 ( -0.67545 0.186885 )
Epeak [keV] : 9999.36 ( -9999.36 -9999.36 )
Norm@50keV : 1.42740E-02 ( -0.0104681 0.0188321 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.74 using 59 PHA bins.
# Reduced chi-squared = 1.085 for 56 degrees of freedom
# Null hypothesis probability = 3.091250e-01
Photon flux (15-150 keV) in 1 sec: 1.75701 ( -0.19825 0.19603 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.3622e-07 ( -1.6906e-08 1.6642e-08 ) ergs/cm2
Band function
Time interval is from -0.116 sec. to 0.884 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.00048 ( 1.01501 5.50333 )
beta : -1.52436 ( 1.52351 0.256765 )
Epeak [keV] : 83.5949 ( -86.0887 -86.0887 )
Norm@50keV : 2.64544E-02 ( -0.0120816 0.8088 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.64 using 59 PHA bins.
# Reduced chi-squared = 1.103 for 55 degrees of freedom
# Null hypothesis probability = 2.797741e-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] : 15.1730 (-1.96607 2.36121)
R^2/D10^2 : 0.194636 (-0.0779223 0.122921)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 82.38 using 59 PHA bins.
# Reduced chi-squared = 1.445 for 57 degrees of freedom
# Null hypothesis probability = 1.557740e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.363e-09 2.009e-09
25- 50 3.760e-08 5.990e-09
50-150 5.920e-08 1.333e-08
15-150 1.062e-07 1.518e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 ( )
Norm : 7.24428 (-0.791101 0.791052)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.19 using 59 PHA bins.
# Reduced chi-squared = 1.091 for 57 degrees of freedom
# Null hypothesis probability = 2.966813e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.804e-08 8.462e-09
25- 50 3.470e-08 1.892e-08
50-150 7.611e-08 4.101e-08
15-150 1.289e-07 6.976e-08
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 11.0998 (-3.5057 2.27908)
R1^2/D10^2 : 0.492572 (-0.253318 1.18421)
kT2 [keV] : 199.712 ( )
R2^2/D10^2 : 2.13101E-04 (-7.16385e-05 0.0182773)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.70 using 59 PHA bins.
#Fit statistic : Chi-Squared = 61.63 using 59 PHA bins.
# Reduced chi-squared = 1.122 for 55 degrees of freedom
# Reduced chi-squared = 1.121 for 55 degrees of freedom
# Null hypothesis probability = 2.491442e-01
# Null hypothesis probability = 2.509372e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.334e-08 4.334e-09
25- 50 3.838e-08 1.203e-08
50-150 8.362e-08 5.441e-08
15-150 1.354e-07 6.867e-08
Plot creation:
Mon Jul 7 07:24:39 EDT 2014