batgrbproduct analysis for trigger=758005
batgrbproduct Analysis for Trigger=758005
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 15 downlinks after the trigger.
======================================================================
BAT GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.46
Process Start Time (local time): Thu Jun 22 20:23:35 EDT 2017
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger758005/GCN5_download_cron
======================================================================
Trigger: 00758005 Segment: 000
BAT Trigger Time: 519736033.856 [s; MET]
Trigger Stop: 519736034.88 [s; MET]
UTC: 2017-06-21T11:06:54.605560 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 12.4644150151791 Dec: 40.7774517491441 [deg; J2000]
Catalogged Source?: YES
Point Source?: YES
GRB Indicated?: NO [ by BAT flight software ]
Image S/N Ratio: 5.82
Image Trigger?: NO
Rate S/N Ratio: 27.0185121722126 [ if not an image trigger ]
Image S/N Ratio: 5.82
Flight Position: [ source = BAT ]
RA: 12.4644150151791 Dec: 40.7774517491441 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 12.4011160051668 Dec: 40.6345736220218 [deg; J2000]
{ 00h 49m 36.3s , +40d 38' 04.5" }
+/- 4.56950229077409 [arcmin] (estimated 90% radius based on SNR)
+/- 2.88229093660878 [arcmin] (formal 1-sigma fit error)
SNR: 3.47095132783643
Angular difference between Flight and Ground position is 9.043236 arcmin
Partial Coding Fraction: 1.015625 [ including projection effects ]
Duration
T90: 1.02399998903275 +/-
Measured from: 0
to: 1.02399998903275 [s; relative to TRIGTIME]
T50: 1.02399998903275 +/-
Measured from: 0
to: 1.02399998903275 [s; relative to TRIGTIME]
WARNING: battblocks failed. Used TDRSS fore/background intervals
Fluence
Peak Flux (peak 1.02399998903275 second)
Measured from: 2.98023223876953e-08
to: 1.02400001883507 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0
to: 1.02399998903275 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total -0.014372 0.001235 0.032423 0.050763
0.010705 0.012024 0.011627 0.014271 [error]
Peak -0.014372 0.001235 0.032423 0.050763
0.010705 0.012024 0.011627 0.014271 [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 2.35e-10 2.11e-09 1.68e-08 7.88e-07 6.46e-08 8.39e-07 erg/cm2
Error 6.88e-10 3.11e-09 1.23e-08 8.26e-07 4.84e-08 8.35e-07 erg/cm2
Peak flux Power-law 7.01e-03 3.29e-02 1.31e-01 1.97e+00 3.90e-01 2.14e+00 ph/cm2/s
Error 2.10e-02 5.05e-02 9.91e-02 1.93e+00 3.07e-01 2.01e+00 ph/cm2/s
Fluence Cutoff-PL 3.65e-12 6.83e-10 2.30e-08 7.62e-08 6.78e-08 1.05e-07 erg/cm2
Error 5.35e-10 2.68e-09 1.97e-08 1.24e-06 3.60e-08 1.59e-06 erg/cm2
Peak flux Cutoff-PL 4.42e-03 2.61e-02 1.64e-01 8.54e-01 4.00e-01 2.98e+00 ph/cm2/s
Error 1.61e-02 4.32e-02 1.33e-01 2.28e+00 1.99e-01 2.69e+00 ph/cm2/s
Fluence Band -------- -------- -------- -------- -------- -------- 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 -0.985 1.161 - - 1.77e-03 2.05e-03 57.460 57
CPL -0.984 1.635 10000.0 0.0 1.86e-03 0.00e+00 57.430 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL -0.985 1.161 - - 1.77e-03 2.05e-03 57.460 57
CPL -0.984 1.635 10000.0 0.0 1.86e-03 0.00e+00 57.430 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 1.024 0.000 1.024
T90 1.024 0.000 1.024
T50 1.024 0.000 1.024
Peak 1.024 0.000 1.024
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
12.4011 +40.6346 0.0554 10.7 -160.7 0.0893 3.5 TRIG_00758005
------------------------------------------
Foreground time interval of the image:
0.000 1.024 (delta_t = 1.024 [sec])
Background time interval of the image:
-107.755 -81.416 (delta_t = 26.339 [sec])
-79.856 -54.086 (delta_t = 25.770 [sec])
-52.856 -9.856 (delta_t = 43.000 [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 1.024 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.984634 ( -1.14643 1.17641 )
Norm@50keV : 1.77331E-03 ( -0.00176637 0.00232765 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.46 using 59 PHA bins.
# Reduced chi-squared = 1.008 for 57 degrees of freedom
# Null hypothesis probability = 4.579557e-01
Photon flux (15-150 keV) in 1.024 sec: 0.390255 ( -0.390001 0.224068 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.45786e-08 ( -6.45788e-08 3.22576e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 1.024 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.983751 ( -1.60029 1.67071 )
Epeak [keV] : 9999.99 ( -9999.99 -9999.99 )
Norm@50keV : 1.86076E-03 ( -0.00186076 -0.00186076 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.43 using 59 PHA bins.
# Reduced chi-squared = 1.025 for 56 degrees of freedom
# Null hypothesis probability = 4.221222e-01
Photon flux (15-150 keV) in 1.024 sec: 0.400458 ( -0.191171 0.207064 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.77762e-08 ( -3.51554e-08 3.68285e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 1.024 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -5 -5 )
beta : -0.429327 ( 0.42841 2.45464 )
Epeak [keV] : 150.002 ( -149.705 232.221 )
Norm@50keV : 1.52401E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.61 using 59 PHA bins.
# Reduced chi-squared = 1.029 for 55 degrees of freedom
# Null hypothesis probability = 4.146085e-01
Photon flux (15-150 keV) in 1.024 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] : 200.000 (-200 -200)
R^2/D10^2 : 2.32068E-04 (-0.000114066 -0.00023225)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.43 using 59 PHA bins.
# Reduced chi-squared = 1.008 for 57 degrees of freedom
# Null hypothesis probability = 4.590749e-01
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] : 0.265234 (-7 -7)
Norm : 6.90112E+19 (-7.18528e+19 -7.18528e+19)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.35 using 59 PHA bins.
# Reduced chi-squared = 1.199 for 57 degrees of freedom
# Null hypothesis probability = 1.443638e-01
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] : 197.129 (-159.598 -197.13)
R1^2/D10^2 : 2.35150E-04 (-0.000118003 0.0039369)
kT2 [keV] : 10.0000 (-10 -10)
R2^2/D10^2 : 0.0 (0 1.87186)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.65 using 59 PHA bins.
#Fit statistic : Chi-Squared = 57.43 using 59 PHA bins.
# Reduced chi-squared = 1.248 for 55 degrees of freedom
# Reduced chi-squared = 1.044 for 55 degrees of freedom
# Null hypothesis probability = 1.021272e-01
# Null hypothesis probability = 3.851180e-01
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 1.024 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.984634 ( -1.14643 1.17641 )
Norm@50keV : 1.77331E-03 ( -0.00176637 0.00232765 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.46 using 59 PHA bins.
# Reduced chi-squared = 1.008 for 57 degrees of freedom
# Null hypothesis probability = 4.579557e-01
Photon flux (15-150 keV) in 1.024 sec: 0.390255 ( -0.390001 0.224068 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.45786e-08 ( -6.45788e-08 3.22576e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 1.024 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.983751 ( -1.60029 1.67071 )
Epeak [keV] : 9999.99 ( -9999.99 -9999.99 )
Norm@50keV : 1.86076E-03 ( -0.00186076 -0.00186076 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.43 using 59 PHA bins.
# Reduced chi-squared = 1.025 for 56 degrees of freedom
# Null hypothesis probability = 4.221222e-01
Photon flux (15-150 keV) in 1.024 sec: 0.400458 ( -0.191171 0.207064 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.77762e-08 ( -3.51554e-08 3.68285e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 1.024 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -5 -5 )
beta : -0.429327 ( 0.42841 2.45464 )
Epeak [keV] : 150.002 ( -149.705 232.221 )
Norm@50keV : 1.52401E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.61 using 59 PHA bins.
# Reduced chi-squared = 1.029 for 55 degrees of freedom
# Null hypothesis probability = 4.146085e-01
Photon flux (15-150 keV) in 1.024 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] : 200.000 (-200 -200)
R^2/D10^2 : 2.32068E-04 (-0.000114066 -0.00023225)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.43 using 59 PHA bins.
# Reduced chi-squared = 1.008 for 57 degrees of freedom
# Null hypothesis probability = 4.590749e-01
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] : 0.265234 (-7 -7)
Norm : 6.90112E+19 (-7.18528e+19 -7.18528e+19)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.35 using 59 PHA bins.
# Reduced chi-squared = 1.199 for 57 degrees of freedom
# Null hypothesis probability = 1.443638e-01
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] : 197.129 (-159.619 -197.13)
R1^2/D10^2 : 2.35150E-04 (-0.000118003 0.0039369)
kT2 [keV] : 10.0000 (-10 -10)
R2^2/D10^2 : 0.0 (0 1.87186)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.65 using 59 PHA bins.
#Fit statistic : Chi-Squared = 57.43 using 59 PHA bins.
# Reduced chi-squared = 1.248 for 55 degrees of freedom
# Reduced chi-squared = 1.044 for 55 degrees of freedom
# Null hypothesis probability = 1.021272e-01
# Null hypothesis probability = 3.851180e-01
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 Jun 22 20:42:58 EDT 2017