batgrbproduct Analysis for Trigger=602604
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 Jun 26 11:34:31 EDT 2014
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger602604/GCN5_download_cron
======================================================================
Trigger: 00602604 Segment: 000
BAT Trigger Time: 425435593.984 [s; MET]
Trigger Stop: 425435602.176 [s; MET]
UTC: 2014-06-26T00:33:01.797720 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 77.3504863959002 Dec: -82.6298888891504 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 11.59
Image Trigger?: NO
Rate S/N Ratio: 15.9687194226713 [ if not an image trigger ]
Image S/N Ratio: 11.59
Flight Position: [ source = BAT ]
RA: 77.3504863959002 Dec: -82.6298888891504 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 77.1617749921955 Dec: -82.624486194837 [deg; J2000]
{ 05h 08m 38.8s , -82d 37' 28.2" }
+/- 1.50025870230659 [arcmin] (estimated 90% radius based on SNR)
+/- 0.523642757330835 [arcmin] (formal 1-sigma fit error)
SNR: 17.0393272889157
Angular difference between Flight and Ground position is 1.488704 arcmin
Partial Coding Fraction: 1.015625 [ including projection effects ]
Duration
T90: 16.3879999518394 +/- 1.38405202517548
Measured from: -8.09999990463257
to: 8.28800004720688 [s; relative to TRIGTIME]
T50: 11.5799999237061 +/- 2.1946298085044
Measured from: -5.85199987888336
to: 5.72800004482269 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 5.68399995565414
to: 6.68399995565414 [s; relative to TRIGTIME]
Total Fluence
Measured from: -8.93600004911423
to: 9.08399999141693 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.252308 0.328073 0.151284 0.030769
0.024401 0.025050 0.021592 0.019147 [error]
Peak 0.025686 0.031948 0.018391 0.008095
0.006018 0.006279 0.005230 0.004648 [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 8.22e-08 1.18e-07 1.25e-07 2.47e-07 4.02e-07 5.72e-07 erg/cm2
Error 1.09e-08 1.12e-08 1.99e-08 7.69e-08 4.63e-08 9.88e-08 erg/cm2
Peak flux Power-law 2.66e-01 2.20e-01 1.24e-01 1.02e-01 6.55e-01 7.13e-01 ph/cm2/s
Error 8.11e-02 4.70e-02 4.26e-02 6.82e-02 1.40e-01 1.57e-01 ph/cm2/s
Fluence Cutoff-PL 7.31e-08 1.36e-07 1.18e-07 4.15e-08 3.58e-07 3.68e-07 erg/cm2
Error 1.27e-08 1.58e-08 2.42e-08 5.65e-08 4.84e-08 6.87e-08 erg/cm2
Peak flux Cutoff-PL 2.59e-01 2.29e-01 1.24e-01 6.58e-02 6.50e-01 6.78e-01 ph/cm2/s
Error 8.91e-02 6.05e-02 4.59e-02 9.47e-02 1.42e-01 1.74e-01 ph/cm2/s
Fluence Band 7.27e-08 1.35e-07 1.18e-07 5.03e-08 3.58e-07 3.79e-07 erg/cm2
Error -------- -------- -------- -------- -------- -------- 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 1.911 0.172 - - 2.43e-03 2.83e-04 54.550 57
CPL 0.632 0.875 44.8 7.9 1.31e-02 2.29e-02 46.390 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.833 0.396 - - 4.70e-03 1.24e-03 55.710 57
CPL 1.521 1.297 66.3 -0.0 7.09e-03 4.27e-02 55.580 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: 18.112000 sec.
T50 in the 50-300 keV band: 10.432000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 18.020 -8.936 9.084
T90 16.388 -8.100 8.288
T50 11.580 -5.852 5.728
Peak 1.000 5.684 6.684
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
77.1618 -82.6245 0.0112 13.6 -9.1 0.8231 17.0 TRIG_00602604
------------------------------------------
Foreground time interval of the image:
-8.936 9.084 (delta_t = 18.020 [sec])
Background time interval of the image:
-239.984 -8.936 (delta_t = 231.048 [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 -8.936 sec. to 9.084 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.91149 ( -0.167629 0.175537 )
Norm@50keV : 2.42578E-03 ( -0.000285098 0.000280427 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.55 using 59 PHA bins.
# Reduced chi-squared = 0.9570 for 57 degrees of freedom
# Null hypothesis probability = 5.676690e-01
Photon flux (15-150 keV) in 18.02 sec: 0.349835 ( -0.0330252 0.0330294 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.0194e-07 ( -4.57758e-08 4.67419e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -8.936 sec. to 9.084 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.632164 ( -0.950893 0.798205 )
Epeak [keV] : 44.7784 ( -3.76882 12.0639 )
Norm@50keV : 1.31039E-02 ( -0.0131041 0.0326507 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.39 using 59 PHA bins.
# Reduced chi-squared = 0.8284 for 56 degrees of freedom
# Null hypothesis probability = 8.164729e-01
Photon flux (15-150 keV) in 18.02 sec: 0.334037 ( -0.03395 0.034096 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.58245e-07 ( -4.62267e-08 5.04776e-08 ) ergs/cm2
Band function
Time interval is from -8.936 sec. to 9.084 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.631537 ( -1.21608 0.740144 )
beta : -9.99996 ( 9.99996 20 )
Epeak [keV] : 44.7657 ( -7.37981 12.0552 )
Norm@50keV : 1.31157E-02 ( -0.0131157 0.0330569 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.39 using 59 PHA bins.
# Reduced chi-squared = 0.8434 for 55 degrees of freedom
# Null hypothesis probability = 7.892258e-01
Photon flux (15-150 keV) in 18.02 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 3.58367e-07 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 10.8088 (-1.08687 1.20367)
R^2/D10^2 : 0.125569 (-0.0412481 0.0614932)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.75 using 59 PHA bins.
# Reduced chi-squared = 1.013 for 57 degrees of freedom
# Null hypothesis probability = 4.474998e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.503e-08 8.560e-09
25- 50 1.521e-07 1.673e-08
50-150 9.902e-08 2.363e-08
15-150 3.062e-07 3.532e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 73.3316 (-18.514 29.8884)
Norm : 1.70546 (-0.231754 0.275217)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.30 using 59 PHA bins.
# Reduced chi-squared = 0.8474 for 57 degrees of freedom
# Null hypothesis probability = 7.871911e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.921e-08 9.488e-09
25- 50 1.276e-07 1.344e-08
50-150 1.695e-07 4.609e-08
15-150 3.763e-07 5.820e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.48609 (-1.91059 2.42128)
R1^2/D10^2 : 1.63675 (-1.27202 5.29548)
kT2 [keV] : 13.9497 (-2.35784 4.19392)
R2^2/D10^2 : 3.99042E-02 (-0.0281916 0.0487356)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 45.19 using 59 PHA bins.
# Reduced chi-squared = 0.8217 for 55 degrees of freedom
# Null hypothesis probability = 8.245564e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.509e-08 3.430e-08
25- 50 1.321e-07 5.832e-08
50-150 1.407e-07 7.777e-08
15-150 3.479e-07 1.771e-07
Peak spectrum fit
Power-law model
Time interval is from 5.684 sec. to 6.684 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.83296 ( -0.375063 0.416426 )
Norm@50keV : 4.69539E-03 ( -0.00126894 0.00120713 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.71 using 59 PHA bins.
# Reduced chi-squared = 0.9775 for 57 degrees of freedom
# Null hypothesis probability = 5.233987e-01
Photon flux (15-150 keV) in 1 sec: 0.655467 ( -0.13982 0.13982 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.31859e-08 ( -1.12825e-08 1.17315e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 5.684 sec. to 6.684 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.52111 ( -1.87514 0.718039 )
Epeak [keV] : 66.2885 ( -66.2488 -66.3118 )
Norm@50keV : 7.08550E-03 ( -0.00708252 0.0783406 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.58 using 59 PHA bins.
# Reduced chi-squared = 0.9926 for 56 degrees of freedom
# Null hypothesis probability = 4.905596e-01
Photon flux (15-150 keV) in 1 sec: 0.649918 ( -0.141958 0.141581 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.19189e-08 ( -1.22324e-08 1.26746e-08 ) ergs/cm2
Band function
Time interval is from 5.684 sec. to 6.684 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.45045 ( 1.45046 1.45046 )
beta : -2.45503 ( 2.28608 12.1962 )
Epeak [keV] : 64.0128 ( -63.9035 -63.9035 )
Norm@50keV : 7.67832E-03 ( -0.00382097 0.20759 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.58 using 59 PHA bins.
# Reduced chi-squared = 1.011 for 55 degrees of freedom
# Null hypothesis probability = 4.528107e-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] : 10.8866 (-2.7544 3.65377)
R^2/D10^2 : 0.227411 (-0.148737 0.436525)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.22 using 59 PHA bins.
# Reduced chi-squared = 1.074 for 57 degrees of freedom
# Null hypothesis probability = 3.270849e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.620e-09 2.742e-09
25- 50 1.568e-08 5.589e-09
50-150 1.041e-08 6.105e-09
15-150 3.171e-08 1.171e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 90.6193 (-46.4198 -90.6193)
Norm : 2.98729 (-0.747845 1.13999)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.65 using 59 PHA bins.
# Reduced chi-squared = 0.9762 for 57 degrees of freedom
# Null hypothesis probability = 5.259992e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.796e-09 2.828e-09
25- 50 1.321e-08 6.193e-09
50-150 2.019e-08 1.523e-08
15-150 4.120e-08 2.401e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.17780 (-3.5146 4.54125)
R1^2/D10^2 : 2.33354 (-2.0154 1103.98)
kT2 [keV] : 18.6555 (-7.73213 134.519)
R2^2/D10^2 : 2.36704E-02 (-0.0232071 0.187422)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.77 using 59 PHA bins.
# Reduced chi-squared = 1.014 for 55 degrees of freedom
# Null hypothesis probability = 4.457223e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.143e-09 4.755e-09
25- 50 1.237e-08 6.515e-09
50-150 1.994e-08 1.243e-08
15-150 4.045e-08 2.208e-08
Plot creation:
Thu Jun 26 11:38:08 EDT 2014