batgrbproduct Analysis for Trigger=643078
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 11 14:25:24 EDT 2015
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger643078/GCN5_download_cron
======================================================================
Trigger: 00643078 Segment: 000
BAT Trigger Time: 455629288 [s; MET]
Trigger Stop: 455630096 [s; MET]
UTC: 2015-06-10T11:41:14.301180 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 266.77090974322 Dec: -32.0263161123219 [deg; J2000]
Catalogged Source?: YES
Point Source?: YES
GRB Indicated?: NO [ by BAT flight software ]
Image S/N Ratio: 7.21
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 7.21
Flight Position: [ source = BAT ]
RA: 266.77090974322 Dec: -32.0263161123219 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 266.682789694063 Dec: -32.123157178001 [deg; J2000]
{ 17h 46m 43.9s , -32d 07' 23.4" }
+/- 12.9600537538808 [arcmin] (estimated 90% radius based on SNR)
+/- 12.3977443087744 [arcmin] (formal 1-sigma fit error)
SNR: 0.782852765699459
Angular difference between Flight and Ground position is 7.337109 arcmin
Partial Coding Fraction: 0.5625 [ including projection effects ]
Duration
T90: 808 +/-
Measured from: 0
to: 808 [s; relative to TRIGTIME]
T50: 808 +/-
Measured from: 0
to: 808 [s; relative to TRIGTIME]
WARNING: battblocks failed. Used TDRSS fore/background intervals
Fluence
Peak Flux (peak 808 second)
Measured from: 0
to: 808 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0
to: 808 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.745763 0.429928 0.225736 0.302907
0.257736 0.237086 0.198077 0.171443 [error]
Peak 0.745763 0.429928 0.225736 0.302907
0.257736 0.237086 0.198077 0.171443 [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 2.52e-07 2.11e-07 1.20e-07 1.02e-07 6.28e-07 6.87e-07 erg/cm2
Error 1.29e-07 1.69e-07 1.69e-07 3.93e-07 4.11e-07 6.52e-07 erg/cm2
Peak flux Power-law 1.04e-02 4.87e-03 1.39e-03 4.97e-04 1.69e-02 1.71e-02 ph/cm2/s
Error 5.45e-03 3.82e-03 1.87e-03 1.67e-03 7.40e-03 7.64e-03 ph/cm2/s
Fluence Cutoff-PL 2.52e-07 2.15e-07 1.27e-07 1.11e-07 6.39e-07 7.03e-07 erg/cm2
Error 1.29e-07 1.69e-07 -------- 2.76e-07 4.11e-07 6.40e-07 erg/cm2
Peak flux Cutoff-PL 1.08e-02 4.43e-03 1.08e-03 3.04e-04 1.66e-02 1.66e-02 ph/cm2/s
Error 5.51e-03 -------- -------- -------- 7.47e-03 7.76e-03 ph/cm2/s
Fluence Band 2.44e-07 3.36e-07 3.17e-07 3.65e-07 1.07e-06 1.27e-06 erg/cm2
Error -------- -------- -------- -------- -------- -------- erg/cm2
Peak flux Band 8.45e-03 7.71e-03 4.38e-03 2.57e-03 2.20e-02 2.32e-02 ph/cm2/s
Error -------- -------- -------- 4.06e-02 -------- -------- ph/cm2/s
=== Time-averaged spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 2.806 1.788 - - 7.05e-05 6.99e-05 52.790 57
CPL 1.974 0.000 1.6 0.0 1.94e-04 0.00e+00 53.450 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 2.806 1.788 - - 7.05e-05 6.99e-05 52.790 57
CPL 1.974 0.000 1.6 0.0 1.94e-04 0.00e+00 53.450 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 808.000 0.000 808.000
T90 808.000 0.000 808.000
T50 808.000 0.000 808.000
Peak 808.000 0.000 808.000
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
266.6828 -32.1232 0.2454 24.6 124.5 0.8908 0.8 TRIG_00643078
------------------------------------------
Foreground time interval of the image:
0.000 107.460 (delta_t = 107.460 [sec])
109.000 808.000 (delta_t = 699.000 [sec])
Background time interval of the image:
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
Multiple GTIs in the spectrum
tstart tstop
0.000000 107.460000
109.000000 808.000000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.80614 ( -1.14732 2.4293 )
Norm@50keV : 7.05244E-05 ( -6.44904e-05 7.53409e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.79 using 59 PHA bins.
# Reduced chi-squared = 0.9262 for 57 degrees of freedom
# Null hypothesis probability = 6.335241e-01
Photon flux (15-150 keV) in 806.5 sec: 1.69043E-02 ( -0.0074337 0.00735671 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.28421e-07 ( -3.67934e-07 4.54972e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
0.000000 107.460000
109.000000 808.000000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.97365 ( )
Epeak [keV] : 1.60206 ( )
Norm@50keV : 1.94048E-04 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.45 using 59 PHA bins.
# Reduced chi-squared = 0.9544 for 56 degrees of freedom
# Null hypothesis probability = 5.721410e-01
Photon flux (15-150 keV) in 806.5 sec: 1.65619E-02 ( -0.0071821 0.0077611 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.38556e-07 ( -3.77918e-07 4.44694e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
0.000000 107.460000
109.000000 808.000000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -9.92145 ( 9.92145 9.92145 )
beta : -2.80857 ( -2.43076 1.1488 )
Epeak [keV] : 3.17485 ( -3.17485 -3.17485 )
Norm@50keV : 9.56770E-03 ( -0.00876031 0.0102438 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.79 using 59 PHA bins.
# Reduced chi-squared = 0.9599 for 55 degrees of freedom
# Null hypothesis probability = 5.593846e-01
Photon flux (15-150 keV) in 806.5 sec: 2.20020E-02 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.06845e-06 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 4.13076 (-2.16137 5.54508)
R^2/D10^2 : 0.320116 (-0.326368 31.1413)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.11 using 59 PHA bins.
# Reduced chi-squared = 0.9669 for 57 degrees of freedom
# Null hypothesis probability = 5.462472e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.738e-07 1.687e-07
25- 50 1.083e-07 8.158e-08
50-150 1.593e-09 2.167e-09
15-150 3.837e-07 2.605e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 19.6193 (-15.9332 -20.0481)
Norm : 0.199368 (-0.191379 4.98462)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.98 using 59 PHA bins.
# Reduced chi-squared = 0.9470 for 57 degrees of freedom
# Null hypothesis probability = 5.890395e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.453e-07 1.579e-07
25- 50 2.116e-07 1.486e-07
50-150 6.136e-08 5.738e-08
15-150 5.183e-07 3.389e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.98709 (-2.9862 3.0427)
R1^2/D10^2 : 1.60646 (-1.56489 -1.60646)
kT2 [keV] : 19.1514 (-19.0623 -19.1514)
R2^2/D10^2 : 4.29252E-04 (-0.000427104 0.00553365)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.85 using 59 PHA bins.
# Reduced chi-squared = 0.9427 for 55 degrees of freedom
# Null hypothesis probability = 5.958360e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.607e-07 1.459e-07
25- 50 1.542e-07 8.468e-08
50-150 3.250e-07 2.820e-07
15-150 7.399e-07 4.178e-07
Peak spectrum fit
Power-law model
Time interval is from 109.000 sec. to 808.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.80614 ( -1.14732 2.4293 )
Norm@50keV : 7.05244E-05 ( -6.44904e-05 7.53409e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.79 using 59 PHA bins.
# Reduced chi-squared = 0.9262 for 57 degrees of freedom
# Null hypothesis probability = 6.335241e-01
Photon flux (15-150 keV) in 806.5 sec: 1.69043E-02 ( -0.0074337 0.00735671 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.28421e-07 ( -3.67934e-07 4.54972e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 109.000 sec. to 808.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.97365 ( )
Epeak [keV] : 1.60206 ( )
Norm@50keV : 1.94048E-04 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.45 using 59 PHA bins.
# Reduced chi-squared = 0.9544 for 56 degrees of freedom
# Null hypothesis probability = 5.721410e-01
Photon flux (15-150 keV) in 806.5 sec: 1.65619E-02 ( -0.0071821 0.0077611 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.38556e-07 ( -3.77918e-07 4.44694e-07 ) ergs/cm2
Band function
Time interval is from 109.000 sec. to 808.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -9.92145 ( 9.92145 9.92145 )
beta : -2.80857 ( -2.43076 1.1488 )
Epeak [keV] : 3.17485 ( -3.17485 -3.17485 )
Norm@50keV : 9.56770E-03 ( -0.00876031 0.0102438 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.79 using 59 PHA bins.
# Reduced chi-squared = 0.9599 for 55 degrees of freedom
# Null hypothesis probability = 5.593846e-01
Photon flux (15-150 keV) in 806.5 sec: 2.20020E-02 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.06845e-06 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 4.13076 (-2.16137 5.54508)
R^2/D10^2 : 0.320116 (-0.326368 31.1413)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.11 using 59 PHA bins.
# Reduced chi-squared = 0.9669 for 57 degrees of freedom
# Null hypothesis probability = 5.462472e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.738e-07 1.786e-07
25- 50 1.083e-07 7.408e-08
50-150 1.593e-09 1.881e-09
15-150 3.837e-07 2.392e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 19.6193 (-15.9332 -20.0481)
Norm : 0.199368 (-0.191379 4.98462)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.98 using 59 PHA bins.
# Reduced chi-squared = 0.9470 for 57 degrees of freedom
# Null hypothesis probability = 5.890395e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.453e-07 1.560e-07
25- 50 2.116e-07 1.427e-07
50-150 6.136e-08 6.133e-08
15-150 5.183e-07 3.470e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.98709 (-2.03514 3.18423)
R1^2/D10^2 : 1.60646 (-1.56489 -1.60646)
kT2 [keV] : 19.1514 (-19.0623 -19.1514)
R2^2/D10^2 : 4.29252E-04 (-0.000427104 0.00579435)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.85 using 59 PHA bins.
# Reduced chi-squared = 0.9427 for 55 degrees of freedom
# Null hypothesis probability = 5.958360e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.607e-07 1.490e-07
25- 50 1.542e-07 9.275e-08
50-150 3.250e-07 2.482e-07
15-150 7.399e-07 3.997e-07
Plot creation:
Thu Jun 11 14:28:58 EDT 2015