batgrbproduct analysis for trigger=852625

batgrbproduct Analysis for Trigger=852625

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sat Aug 11 13:43:26 EDT 2018
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger852625/GCN5_download_cron
======================================================================

  Trigger: 00852625      Segment: 000

  BAT Trigger Time: 555588704   [s; MET]
      Trigger Stop: 555588768   [s; MET]
               UTC: 2018-08-10T10:11:22.595200    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 144.435660197179   Dec: -42.7669318754979  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.07
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    7.07

  Flight Position:   [ source = BAT ]
    RA: 144.435660197179   Dec: -42.7669318754979  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 144.445043258794   Dec: -42.8071700548254  [deg; J2000]  
        { 09h 37m 46.8s , -42d 48' 25.8" }
         +/- 3.5844932261842 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.79327773856963 [arcmin] (formal 1-sigma fit error)
    SNR: 4.90996862667572
 
  Angular difference between Flight and Ground position is 2.449389 arcmin
 
  Partial Coding Fraction: 0.8828125    [ 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     0.202587   0.250080   0.089318  -0.037199
           0.055678   0.057759   0.051826   0.049658 [error]
 Peak      0.202587   0.250080   0.089318  -0.037199
           0.055678   0.057759   0.051826   0.049658 [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 6.02e-08 8.59e-08 9.09e-08 1.78e-07 2.93e-07 4.18e-07   erg/cm2
              Error 2.27e-08 2.60e-08 4.29e-08 1.95e-07 1.05e-07 2.17e-07   erg/cm2
Peak flux Power-law 3.06e-02 2.41e-02 1.28e-02 9.81e-03 7.19e-02 7.73e-02   ph/cm2/s
              Error 1.17e-02 7.24e-03 5.84e-03 8.31e-03 2.15e-02 2.35e-02   ph/cm2/s
 
Fluence   Cutoff-PL 5.43e-08 1.24e-07 4.52e-08 9.71e-10 2.25e-07 2.24e-07   erg/cm2
              Error 2.56e-08 3.93e-08 5.71e-08 2.54e-08 8.64e-08 8.92e-08   erg/cm2
Peak flux Cutoff-PL 2.66e-02 3.49e-02 7.19e-03 8.60e-05 6.88e-02 6.88e-02   ph/cm2/s
              Error 1.30e-02 1.11e-02 8.34e-03 1.84e-03 2.02e-02 2.02e-02   ph/cm2/s
 
Fluence        Band 5.91e-08 1.16e-07 6.12e-08 4.27e-08 2.59e-07 2.80e-07   erg/cm2
              Error 2.67e-08 3.79e-08 -------- -------- -------- --------   erg/cm2
Peak flux      Band 2.70e-02 -------- 7.70e-03 2.09e-04 -------- 7.08e-02   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    1.920    0.484    -      -           4.97e-04 1.81e-04   60.720 57
CPL  -1.577    5.048      36.2   12.2      8.37e-02 7.54e+03   55.320 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.920    0.484    -      -           4.97e-04 1.81e-04   60.720 57
CPL  -1.577    5.048      36.2   12.2      8.37e-02 7.54e+03   55.320 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
  144.4450 -42.8072 0.0390   27.5    0.7       0.5415     4.9  TRIG_00852625       
------------------------------------------
 
Foreground time interval of the image:
  0.000  64.000 (delta_t =  64.000 [sec])
Background time interval of the image:

Lightcurves

Notes:

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:

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: 1.92027     ( -0.455223   0.512236 )
Norm@50keV  : 4.96652E-04    ( -0.00018164   0.000180353 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.72 using 59 PHA bins.
# Reduced chi-squared =          1.065 for     57 degrees of freedom 
# Null hypothesis probability =   3.433603e-01
 
Photon flux (15-150 keV)    in 64 sec: 7.18987E-02 ( -0.0215216  0.021526 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.9262e-07 ( -1.01462e-07  1.0879e-07 ) 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: -1.57701     ( -7.3434   2.75288 )
Epeak [keV] : 36.1623      ( -8.3572 15.9592 )
Norm@50keV  : 8.36689E-02    ( -0.101058   15077.8 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.32 using 59 PHA bins.
# Reduced chi-squared =         0.9879 for     56 degrees of freedom 
# Null hypothesis probability =   5.004703e-01
 
Photon flux (15-150 keV)    in 64 sec: 6.87514E-02 ( -0.0199275  0.0204924 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.24553e-07 ( -7.47917e-08  9.7913e-08 ) 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       : 5.00000   ( -5.5474   -5 )
beta        : -2.87214    ( 2.87214   0.88977 )
Epeak [keV] : 28.7595      ( -6.28979 7.42503 )
Norm@50keV   : 39.4357    ( -10.7105   147.675 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.19 using 59 PHA bins.
# Reduced chi-squared =         0.9853 for     55 degrees of freedom 
# Null hypothesis probability =   5.055022e-01
 
Photon flux (15-150 keV)    in 64 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.58523e-07 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 9.26468  (-2.16357  2.96589)
R^2/D10^2   : 5.06588E-02  (-0.0335762   0.089432)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.43 using 59 PHA bins.
# Reduced chi-squared =         0.9725 for     57 degrees of freedom 
# Null hypothesis probability =   5.340865e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.496e-08   3.325e-08
25- 50  1.222e-07   7.179e-08
50-150  5.089e-08   3.916e-08
15-150  2.280e-07   1.283e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 60.8668       (-30.5215      116.252)
Norm        : 0.388570       (-0.142484     0.215508)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.46 using 59 PHA bins.
# Reduced chi-squared =          1.026 for     57 degrees of freedom 
# Null hypothesis probability =   4.214607e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.264e-08   3.654e-08
25- 50  9.576e-08   5.859e-08
50-150  1.103e-07   9.040e-08
15-150  2.687e-07   1.775e-07
Double BB
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.39 using 59 PHA bins.
#Fit statistic : Chi-Squared =          55.36 using 59 PHA bins.
#Fit statistic : Chi-Squared =          55.35 using 59 PHA bins.
#Fit statistic : Chi-Squared =          55.34 using 59 PHA bins.
# Reduced chi-squared =          1.007 for     55 degrees of freedom 
# Reduced chi-squared =          1.007 for     55 degrees of freedom 
# Reduced chi-squared =          1.006 for     55 degrees of freedom 
# Reduced chi-squared =          1.006 for     55 degrees of freedom 
# Null hypothesis probability =   4.598433e-01
# Null hypothesis probability =   4.608996e-01
# Null hypothesis probability =   4.614091e-01
# Null hypothesis probability =   4.619215e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.599e-08   1.964e-05
25- 50  1.201e-07   1.331e-04
50-150  5.614e-08   2.103e-03
15-150  2.323e-07   3.386e-03

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: 1.92027     ( -0.455223   0.512236 )
Norm@50keV  : 4.96652E-04    ( -0.00018164   0.000180353 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.72 using 59 PHA bins.
# Reduced chi-squared =          1.065 for     57 degrees of freedom 
# Null hypothesis probability =   3.433603e-01
 
Photon flux (15-150 keV)    in 64 sec: 7.18987E-02 ( -0.0215216  0.021526 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.9262e-07 ( -1.01462e-07  1.0879e-07 ) 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: -1.57701     ( -7.3434   2.75288 )
Epeak [keV] : 36.1623      ( -8.3572 15.9592 )
Norm@50keV  : 8.36689E-02    ( -0.101058   15077.8 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.32 using 59 PHA bins.
# Reduced chi-squared =         0.9879 for     56 degrees of freedom 
# Null hypothesis probability =   5.004703e-01
 
Photon flux (15-150 keV)    in 64 sec: 6.87514E-02 ( -0.0199275  0.0204924 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.24553e-07 ( -7.47917e-08  9.7913e-08 ) 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       : 5.00000   ( -5.5474   -5 )
beta        : -2.87214    ( 2.87214   0.88977 )
Epeak [keV] : 28.7595      ( -6.28979 7.42503 )
Norm@50keV   : 39.4357    ( -10.7105   147.675 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.19 using 59 PHA bins.
# Reduced chi-squared =         0.9853 for     55 degrees of freedom 
# Null hypothesis probability =   5.055022e-01
 
Photon flux (15-150 keV)    in 64 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.58523e-07 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 9.26468  (-2.16357  2.96589)
R^2/D10^2   : 5.06588E-02  (-0.0335762   0.089432)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.43 using 59 PHA bins.
# Reduced chi-squared =         0.9725 for     57 degrees of freedom 
# Null hypothesis probability =   5.340865e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.496e-08   3.144e-08
25- 50  1.222e-07   7.347e-08
50-150  5.089e-08   3.856e-08
15-150  2.280e-07   1.377e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 60.8668       (-30.5215      116.252)
Norm        : 0.388570       (-0.142484     0.215508)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.46 using 59 PHA bins.
# Reduced chi-squared =          1.026 for     57 degrees of freedom 
# Null hypothesis probability =   4.214607e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.264e-08   3.766e-08
25- 50  9.576e-08   5.763e-08
50-150  1.103e-07   8.875e-08
15-150  2.687e-07   1.770e-07
Double BB
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.39 using 59 PHA bins.
#Fit statistic : Chi-Squared =          55.36 using 59 PHA bins.
#Fit statistic : Chi-Squared =          55.35 using 59 PHA bins.
#Fit statistic : Chi-Squared =          55.34 using 59 PHA bins.
# Reduced chi-squared =          1.007 for     55 degrees of freedom 
# Reduced chi-squared =          1.007 for     55 degrees of freedom 
# Reduced chi-squared =          1.006 for     55 degrees of freedom 
# Reduced chi-squared =          1.006 for     55 degrees of freedom 
# Null hypothesis probability =   4.598433e-01
# Null hypothesis probability =   4.608996e-01
# Null hypothesis probability =   4.614091e-01
# Null hypothesis probability =   4.619215e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.599e-08   1.733e-05
25- 50  1.201e-07   1.321e-04
50-150  5.614e-08   2.852e-03
15-150  2.323e-07   2.530e-03
Plot creation:
Sat Aug 11 13:47:36 EDT 2018