batgrbproduct Analysis for Trigger=701454
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): Sun Jun 26 10:51:18 EDT 2016
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger701454/GCN5_download_cron
======================================================================
Trigger: 00701454 Segment: 000
BAT Trigger Time: 488563984 [s; MET]
Trigger Stop: 488564048 [s; MET]
UTC: 2016-06-25T16:12:47.531820 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 299.447008358796 Dec: 35.3830807314601 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 8.51
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 8.51
Flight Position: [ source = BAT ]
RA: 299.447008358796 Dec: 35.3830807314601 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 299.544105102968 Dec: 35.2761772177261 [deg; J2000]
{ 19h 58m 10.6s , +35d 16' 34.2" }
+/- 1.17914770257693 [arcmin] (estimated 90% radius based on SNR)
+/- 0.510463908245603 [arcmin] (formal 1-sigma fit error)
SNR: 24.0368792169098
Angular difference between Flight and Ground position is 7.983251 arcmin
Partial Coding Fraction: 0.890625 [ including projection effects ]
Duration
T90: 64 +/-
Measured from: 0
to: 64 [s; relative to TRIGTIME]
T50: 64 +/-
Measured from: 0
to: 64 [s; relative to TRIGTIME]
WARNING: battblocks failed. Used TDRSS fore/background intervals
Fluence
Peak Flux (peak 64 second)
Measured from: 0
to: 64 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0
to: 64 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.542012 0.692338 0.284047 0.075162
0.044186 0.045329 0.039173 0.033840 [error]
Peak 0.542012 0.692338 0.284047 0.075162
0.044186 0.045329 0.039173 0.033840 [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 1.64e-07 2.45e-07 2.73e-07 5.74e-07 8.55e-07 1.26e-06 erg/cm2
Error 2.01e-08 2.02e-08 3.69e-08 1.56e-07 8.53e-08 1.94e-07 erg/cm2
Peak flux Power-law 8.33e-02 6.84e-02 3.81e-02 3.13e-02 2.04e-01 2.21e-01 ph/cm2/s
Error 1.04e-02 5.66e-03 4.98e-03 7.91e-03 1.69e-02 1.86e-02 ph/cm2/s
Fluence Cutoff-PL 1.50e-07 2.73e-07 2.57e-07 1.25e-07 7.65e-07 8.05e-07 erg/cm2
Error 2.31e-08 3.03e-08 4.75e-08 1.74e-07 1.05e-07 2.06e-07 erg/cm2
Peak flux Cutoff-PL 7.55e-02 7.58e-02 3.69e-02 9.08e-03 1.95e-01 1.97e-01 ph/cm2/s
Error 1.21e-02 8.29e-03 6.18e-03 1.00e-02 1.81e-02 2.06e-02 ph/cm2/s
Fluence Band 1.43e-07 2.82e-07 2.44e-07 2.96e-07 7.86e-07 9.77e-07 erg/cm2
Error -------- -------- 4.41e-08 -------- 9.50e-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 1.844 0.153 - - 1.45e-03 1.43e-04 66.220 57
CPL 0.871 0.872 48.1 19.0 5.29e-03 8.96e-03 61.240 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.844 0.153 - - 1.45e-03 1.43e-04 66.220 57
CPL 0.871 0.872 48.1 19.0 5.29e-03 8.96e-03 61.240 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 64.000 0.000 64.000
T90 64.000 0.000 64.000
T50 64.000 0.000 64.000
Peak 64.000 0.000 64.000
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
299.5441 +35.2762 0.0080 14.1 116.8 2.2322 24.0 TRIG_00701454
------------------------------------------
Foreground time interval of the image:
0.000 64.000 (delta_t = 64.000 [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
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.84382 ( -0.150415 0.155458 )
Norm@50keV : 1.45286E-03 ( -0.000144258 0.000142085 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.22 using 59 PHA bins.
# Reduced chi-squared = 1.162 for 57 degrees of freedom
# Null hypothesis probability = 1.888030e-01
Photon flux (15-150 keV) in 64 sec: 0.203704 ( -0.0169167 0.0169219 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.5504e-07 ( -8.4601e-08 8.6089e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.870550 ( -0.981666 0.763293 )
Epeak [keV] : 48.0905 ( -8.4365 29.5502 )
Norm@50keV : 5.28585E-03 ( -0.00334203 0.0145725 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.24 using 59 PHA bins.
# Reduced chi-squared = 1.094 for 56 degrees of freedom
# Null hypothesis probability = 2.934567e-01
Photon flux (15-150 keV) in 64 sec: 0.195173 ( -0.018155 0.018119 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.65382e-07 ( -1.01235e-07 1.08326e-07 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.182140 ( -1.08263 2.35005 )
beta : -2.40843 ( 2.41035 0.427865 )
Epeak [keV] : 40.7044 ( -9.64544 13.4943 )
Norm@50keV : 1.48492E-02 ( -0.0160492 0.601818 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.63 using 59 PHA bins.
# Reduced chi-squared = 1.066 for 55 degrees of freedom
# Null hypothesis probability = 3.438877e-01
Photon flux (15-150 keV) in 64 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 7.85984e-07 ( -7.85536e-07 -9.46432e-08 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 10.4680 (-0.901886 1.01231)
R^2/D10^2 : 8.17281E-02 (-0.0242195 0.0334487)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 73.36 using 59 PHA bins.
# Reduced chi-squared = 1.287 for 57 degrees of freedom
# Null hypothesis probability = 7.119166e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.184e-07 1.782e-08
25- 50 3.135e-07 2.899e-08
50-150 1.865e-07 3.994e-08
15-150 6.184e-07 6.320e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 83.3716 (-20.929 34.3043)
Norm : 0.946729 (-0.110366 0.133951)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.94 using 59 PHA bins.
# Reduced chi-squared = 1.087 for 57 degrees of freedom
# Null hypothesis probability = 3.042993e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.576e-07 1.888e-08
25- 50 2.620e-07 2.198e-08
50-150 3.801e-07 1.523e-07
15-150 7.997e-07 1.459e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.35565 (-1.78096 1.49284)
R1^2/D10^2 : 0.157370 (-0.052074 0.105685)
kT2 [keV] : 31.5969 (-23.1621 -43.0252)
R2^2/D10^2 : 6.68369E-04 (-0.000271074 0.00387364)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.74 using 59 PHA bins.
# Reduced chi-squared = 1.068 for 55 degrees of freedom
# Null hypothesis probability = 3.399921e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.375e-07 3.574e-08
25- 50 2.878e-07 8.058e-08
50-150 3.557e-07 1.815e-07
15-150 7.811e-07 2.828e-07
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.84382 ( -0.150415 0.155458 )
Norm@50keV : 1.45286E-03 ( -0.000144258 0.000142085 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.22 using 59 PHA bins.
# Reduced chi-squared = 1.162 for 57 degrees of freedom
# Null hypothesis probability = 1.888030e-01
Photon flux (15-150 keV) in 64 sec: 0.203704 ( -0.0169167 0.0169219 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.5504e-07 ( -8.4601e-08 8.6089e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.870550 ( -0.981666 0.763293 )
Epeak [keV] : 48.0905 ( -8.4365 29.5502 )
Norm@50keV : 5.28585E-03 ( -0.00334203 0.0145725 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.24 using 59 PHA bins.
# Reduced chi-squared = 1.094 for 56 degrees of freedom
# Null hypothesis probability = 2.934567e-01
Photon flux (15-150 keV) in 64 sec: 0.195173 ( -0.018155 0.018119 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.65382e-07 ( -1.01235e-07 1.08326e-07 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.182140 ( -1.08263 2.35005 )
beta : -2.40843 ( 2.41035 0.427865 )
Epeak [keV] : 40.7044 ( -9.64544 13.4943 )
Norm@50keV : 1.48492E-02 ( -0.0160492 0.603077 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.63 using 59 PHA bins.
# Reduced chi-squared = 1.066 for 55 degrees of freedom
# Null hypothesis probability = 3.438877e-01
Photon flux (15-150 keV) in 64 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 7.85984e-07 ( -7.85536e-07 -9.46432e-08 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 10.4680 (-0.901886 1.01231)
R^2/D10^2 : 8.17281E-02 (-0.0242195 0.0334487)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 73.36 using 59 PHA bins.
# Reduced chi-squared = 1.287 for 57 degrees of freedom
# Null hypothesis probability = 7.119166e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.184e-07 1.654e-08
25- 50 3.135e-07 3.203e-08
50-150 1.865e-07 3.958e-08
15-150 6.184e-07 6.931e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 83.3716 (-20.929 34.3043)
Norm : 0.946729 (-0.110366 0.133951)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.94 using 59 PHA bins.
# Reduced chi-squared = 1.087 for 57 degrees of freedom
# Null hypothesis probability = 3.042993e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.576e-07 1.840e-08
25- 50 2.620e-07 2.230e-08
50-150 3.801e-07 1.527e-07
15-150 7.997e-07 1.520e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.35565 (-1.78096 1.49284)
R1^2/D10^2 : 0.157370 (-0.052074 0.105685)
kT2 [keV] : 31.5969 (-23.1621 -43.0252)
R2^2/D10^2 : 6.68369E-04 (-0.000271074 0.00387364)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.74 using 59 PHA bins.
# Reduced chi-squared = 1.068 for 55 degrees of freedom
# Null hypothesis probability = 3.399921e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.375e-07 3.782e-08
25- 50 2.878e-07 8.010e-08
50-150 3.557e-07 1.939e-07
15-150 7.811e-07 2.811e-07
Plot creation:
Sun Jun 26 10:59:12 EDT 2016