batgrbproduct analysis for trigger=913302
batgrbproduct Analysis for Trigger=913302
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): Tue Jul 9 03:50:24 EDT 2019
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger913302/GCN5_download_cron
======================================================================
Trigger: 00913302 Segment: 000
BAT Trigger Time: 584109673.28 [s; MET]
Trigger Stop: 584109674.304 [s; MET]
UTC: 2019-07-06T12:40:50.085380 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 107.448619293976 Dec: -29.584171873363 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 9.14
Image Trigger?: NO
Rate S/N Ratio: 12.328828005938 [ if not an image trigger ]
Image S/N Ratio: 9.14
Flight Position: [ source = BAT ]
RA: 107.448619293976 Dec: -29.584171873363 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 107.443355151085 Dec: -29.5752025480278 [deg; J2000]
{ 07h 09m 46.4s , -29d 34' 30.7" }
+/- 2.17464849055233 [arcmin] (estimated 90% radius based on SNR)
+/- 1.09333928393713 [arcmin] (formal 1-sigma fit error)
SNR: 10.026145376656
Angular difference between Flight and Ground position is 0.604208 arcmin
Partial Coding Fraction: 0.6953125 [ including projection effects ]
Duration
T90: 25.163999915123 +/- 6.34883608805165
Measured from: 0.284000158309937
to: 25.4480000734329 [s; relative to TRIGTIME]
T50: 14.0919998884201 +/- 3.71152150141128
Measured from: 1.56800019741058
to: 15.6600000858307 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.103999972343445
to: 1.10399997234344 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.248000025749207
to: 27.4840000867844 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.324120 0.433353 0.226408 -0.046194
0.047873 0.049512 0.042207 0.036072 [error]
Peak 0.043611 0.072352 0.045604 0.013451
0.009905 0.010580 0.009058 0.007132 [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 1.19e-07 1.70e-07 1.82e-07 3.62e-07 5.84e-07 8.34e-07 erg/cm2
Error 2.22e-08 2.29e-08 3.93e-08 1.53e-07 9.29e-08 1.97e-07 erg/cm2
Peak flux Power-law 5.22e-01 4.69e-01 2.91e-01 2.74e-01 1.40e+00 1.56e+00 ph/cm2/s
Error 1.33e-01 8.41e-02 6.80e-02 1.19e-01 2.49e-01 2.78e-01 ph/cm2/s
Fluence Cutoff-PL 1.07e-07 2.02e-07 1.65e-07 4.65e-08 5.11e-07 5.20e-07 erg/cm2
Error 2.53e-08 3.50e-08 5.25e-08 -------- 9.97e-08 1.53e-07 erg/cm2
Peak flux Cutoff-PL 3.92e-01 6.45e-01 2.74e-01 1.66e-02 1.33e+00 1.33e+00 ph/cm2/s
Error 1.56e-01 1.34e-01 1.03e-01 4.25e-02 2.49e-01 2.50e-01 ph/cm2/s
Fluence Band 1.05e-07 2.03e-07 1.62e-07 1.23e-07 5.28e-07 5.95e-07 erg/cm2
Error 2.52e-08 -------- 4.97e-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 1.903 0.234 - - 2.29e-03 3.68e-04 75.660 57
CPL 0.452 1.397 43.2 16.4 1.63e-02 7.14e-02 71.380 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.691 0.268 - - 1.06e-02 2.01e-03 80.290 57
CPL -1.278 2.217 45.9 10.3 5.33e-01 8.61e+00 70.880 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: 4.608000 sec.
T50 in the 50-300 keV band: 1.728000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 27.732 -0.248 27.484
T90 25.164 0.284 25.448
T50 14.092 1.568 15.660
Peak 1.000 0.104 1.104
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
107.4434 -29.5752 0.0192 34.6 -164.1 0.5699 10.0 TRIG_00913302
------------------------------------------
Foreground time interval of the image:
-0.248 10.521 (delta_t = 10.769 [sec])
Background time interval of the image:
-215.979 -0.248 (delta_t = 215.731 [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 -0.248 sec. to 27.484 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.90330 ( -0.227512 0.240566 )
Norm@50keV : 2.28989E-03 ( -0.000372027 0.000363877 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 75.66 using 59 PHA bins.
# Reduced chi-squared = 1.327 for 57 degrees of freedom
# Null hypothesis probability = 4.974817e-02
Photon flux (15-150 keV) in 27.73 sec: 0.329083 ( -0.0442872 0.044299 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.83814e-07 ( -9.18329e-08 9.39193e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.248 sec. to 27.484 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.451896 ( -1.57877 1.21483 )
Epeak [keV] : 43.1541 ( -9.19802 23.6399 )
Norm@50keV : 1.63361E-02 ( -0.016343 0.126446 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.38 using 59 PHA bins.
# Reduced chi-squared = 1.275 for 56 degrees of freedom
# Null hypothesis probability = 8.072442e-02
Photon flux (15-150 keV) in 27.73 sec: 0.315489 ( -0.045239 0.045531 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.11075e-07 ( -9.26043e-08 1.06783e-07 ) ergs/cm2
Band function
Time interval is from -0.248 sec. to 27.484 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.72983 ( -6.23048 -4.72983 )
beta : -2.30358 ( -0.453555 0.35451 )
Epeak [keV] : 27.8377 ( -4.59667 4.33415 )
Norm@50keV : 120.312 ( -15.8742 871.29 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 70.53 using 59 PHA bins.
# Reduced chi-squared = 1.282 for 55 degrees of freedom
# Null hypothesis probability = 7.742065e-02
Photon flux (15-150 keV) in 27.73 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 5.28049e-07 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 10.3470 (-1.39422 1.60712)
R^2/D10^2 : 0.141910 (-0.0604185 0.10407)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 75.65 using 59 PHA bins.
# Reduced chi-squared = 1.327 for 57 degrees of freedom
# Null hypothesis probability = 4.977897e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.673e-08 2.051e-08
25- 50 2.261e-07 4.180e-08
50-150 1.302e-07 4.401e-08
15-150 4.430e-07 8.042e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 72.7494 (-24.05 46.9242)
Norm : 1.61889 (-0.305324 0.37314)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 72.59 using 59 PHA bins.
# Reduced chi-squared = 1.273 for 57 degrees of freedom
# Null hypothesis probability = 7.986989e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.156e-07 2.060e-08
25- 50 1.858e-07 2.984e-08
50-150 2.455e-07 1.224e-07
15-150 5.470e-07 1.237e-07
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 197.883 (-197.89 -197.89)
R1^2/D10^2 : 1.96301E-05 (-1.39663e-05 0.00168572)
kT2 [keV] : 9.37890 (-1.36349 1.59744)
R2^2/D10^2 : 0.194290 (-0.0834647 7.63694)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.13 using 59 PHA bins.
#Fit statistic : Chi-Squared = 71.09 using 59 PHA bins.
# Reduced chi-squared = 1.293 for 55 degrees of freedom
# Reduced chi-squared = 1.293 for 55 degrees of freedom
# Null hypothesis probability = 7.058152e-02
# Null hypothesis probability = 7.100051e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.076e-07 5.857e-08
25- 50 2.010e-07 1.029e-07
50-150 1.995e-07 1.137e-07
15-150 5.081e-07 2.587e-07
Peak spectrum fit
Power-law model
Time interval is from 0.104 sec. to 1.104 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.69094 ( -0.2629 0.273139 )
Norm@50keV : 1.05557E-02 ( -0.00202047 0.0019952 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 80.29 using 59 PHA bins.
# Reduced chi-squared = 1.409 for 57 degrees of freedom
# Null hypothesis probability = 2.273748e-02
Photon flux (15-150 keV) in 1 sec: 1.39751 ( -0.248861 0.24915 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.77972e-08 ( -1.92662e-08 1.9614e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.104 sec. to 1.104 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.27767 ( -2.59607 1.83826 )
Epeak [keV] : 45.9323 ( -7.20365 13.4672 )
Norm@50keV : 0.533430 ( -0.559354 16.6521 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 70.88 using 59 PHA bins.
# Reduced chi-squared = 1.266 for 56 degrees of freedom
# Null hypothesis probability = 8.696558e-02
Photon flux (15-150 keV) in 1 sec: 1.32579 ( -0.24714 0.2506 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.07998e-08 ( -1.70289e-08 1.99732e-08 ) ergs/cm2
Band function
Time interval is from 0.104 sec. to 1.104 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.95979 ( -5.19884 -4.95979 )
beta : -2.45874 ( -1.05652 0.507764 )
Epeak [keV] : 33.8476 ( -6.62663 5.74081 )
Norm@50keV : 228.436 ( -38.1296 678.836 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.68 using 59 PHA bins.
# Reduced chi-squared = 1.267 for 55 degrees of freedom
# Null hypothesis probability = 8.782759e-02
Photon flux (15-150 keV) in 1 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 8.61982e-08 ( -8.61912e-08 -1.95725e-08 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 11.6773 (-1.7326 2.0513)
R^2/D10^2 : 0.424715 (-0.194529 0.3418)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.05 using 59 PHA bins.
# Reduced chi-squared = 1.246 for 57 degrees of freedom
# Null hypothesis probability = 9.987672e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.222e-08 3.905e-09
25- 50 3.721e-08 9.170e-09
50-150 2.995e-08 1.159e-08
15-150 7.938e-08 2.153e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 108.677 (-45.8038 -107.867)
Norm : 6.24800 (-1.16573 1.63573)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 77.01 using 59 PHA bins.
# Reduced chi-squared = 1.351 for 57 degrees of freedom
# Null hypothesis probability = 3.991428e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.632e-08 4.384e-09
25- 50 2.868e-08 9.085e-09
50-150 4.865e-08 3.252e-08
15-150 9.365e-08 4.514e-08
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 10.8980 (-10.8074 2.26381)
R1^2/D10^2 : 0.519819 (-0.530618 0.575724)
kT2 [keV] : 200.000 (-200 -200)
R2^2/D10^2 : 6.30788E-05 (-6.31071e-05 -6.31071e-05)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.42 using 59 PHA bins.
#Fit statistic : Chi-Squared = 69.36 using 59 PHA bins.
# Reduced chi-squared = 1.262 for 55 degrees of freedom
# Reduced chi-squared = 1.261 for 55 degrees of freedom
# Null hypothesis probability = 9.127290e-02
# Null hypothesis probability = 9.218544e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.302e-08 5.664e-09
25- 50 3.658e-08 1.630e-08
50-150 4.118e-08 1.998e-08
15-150 9.078e-08 3.676e-08
Plot creation:
Tue Jul 9 03:54:26 EDT 2019