batgrbproduct analysis for trigger=845443

batgrbproduct Analysis for Trigger=845443

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sun Jul  1 15:29:50 EDT 2018
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger845443/GCN5_download_cron
======================================================================

  Trigger: 00845443      Segment: 000

  BAT Trigger Time: 552049932.992   [s; MET]
      Trigger Stop: 552049934.016   [s; MET]
               UTC: 2018-06-30T11:11:51.803800    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 48.8102458660383   Dec: -87.4820175920548  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.75
     Image Trigger?:     NO
     Rate S/N Ratio:     11.5325625946708  [ if not an image trigger ]
     Image S/N Ratio:    7.75

  Flight Position:   [ source = BAT ]
    RA: 48.8102458660383   Dec: -87.4820175920548  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 48.8863133319282   Dec: -87.475801448081  [deg; J2000]  
        { 03h 15m 32.7s , -87d 28' 32.9" }
         +/- 0.830142127792442 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.276544789591404 [arcmin] (formal 1-sigma fit error)
    SNR: 39.6839482366506
 
  Angular difference between Flight and Ground position is 0.423568 arcmin
 
  Partial Coding Fraction: 0.59375    [ including projection effects ]

  Duration
     T90: 18.8479999303818 +/- 6.47663124781276
        Measured from: 1.44400012493134
                   to: 20.2920000553131     [s; relative to TRIGTIME]
     T50: 3.23199999332428 +/- 0.616077879298968
        Measured from: 3.58400011062622
                   to: 6.8160001039505     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 3.64800000190735     
                   to: 4.64800000190735     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.355999946594238     
                   to: 30.0240000486374     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.227547   1.194490   0.647759   0.104091
           0.049185   0.049106   0.041095   0.034282 [error]
 Peak      0.268510   0.270133   0.145825   0.027652
           0.012784   0.013117   0.010381   0.007618 [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 4.15e-07 5.40e-07 5.16e-07 8.73e-07 1.76e-06 2.34e-06   erg/cm2
              Error 3.31e-08 2.67e-08 4.17e-08 1.46e-07 9.54e-08 1.85e-07   erg/cm2
Peak flux Power-law 2.95e+00 2.19e+00 1.08e+00 7.58e-01 6.57e+00 6.97e+00   ph/cm2/s
              Error 2.70e-01 1.24e-01 9.20e-02 1.28e-01 3.86e-01 3.91e-01   ph/cm2/s
 
Fluence   Cutoff-PL 4.02e-07 5.53e-07 5.15e-07 5.90e-07 1.72e-06 2.06e-06   erg/cm2
              Error 3.85e-08 3.31e-08 4.34e-08 3.08e-07 1.11e-07 3.53e-07   erg/cm2
Peak flux Cutoff-PL 2.96e+00 2.19e+00 1.08e+00 7.48e-01 6.57e+00 6.97e+00   ph/cm2/s
              Error -------- -------- -------- -------- -------- 3.16e-01   ph/cm2/s
 
Fluence        Band 3.98e-07 5.48e-07 5.07e-07 8.21e-07 1.74e-06 2.28e-06   erg/cm2
              Error -------- -------- 4.34e-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    2.067    0.098    -      -           6.26e-03 3.63e-04   36.270 57
CPL   1.832    0.289      32.2    0.0      8.39e-03 0.00e+00   35.050 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.019    0.108    -      -           4.34e-02 2.78e-03   47.260 57
CPL   2.086    0.262      58.6    0.0      3.99e-02 0.00e+00   47.170 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: 7.552000 sec.
T50 in the 50-300 keV band: 2.688000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   30.380   -0.356   30.024
T90    18.848    1.444   20.292
T50     3.232    3.584    6.816
Peak    1.000    3.648    4.648

Image

Pre-slew 15-350 keV image (Event data; bkg subtracted)

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   48.8863 -87.4758 0.0048   35.3 -147.2       2.9672    39.7  TRIG_00845443       
------------------------------------------
 
Foreground time interval of the image:
 -0.356  11.409 (delta_t =  11.765 [sec])
Background time interval of the image:
-90.891  -0.356 (delta_t =  90.535 [sec])

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   -0.356 sec. to   30.024 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.06730     ( -0.0972003   0.0992508 )
Norm@50keV  : 6.25718E-03    ( -0.000364796   0.000360959 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          36.27 using 59 PHA bins.
# Reduced chi-squared =         0.6363 for     57 degrees of freedom 
# Null hypothesis probability =   9.853633e-01
 
Photon flux (15-150 keV)    in 30.38 sec: 0.968824 ( -0.050465  0.0506023 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.761e-06 ( -9.51222e-08  9.56569e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.356 sec. to   30.024 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.83204     ( -0.39509   0.182367 )
Epeak [keV] : 32.1715      (   )
Norm@50keV  : 8.39026E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          35.05 using 59 PHA bins.
# Reduced chi-squared =         0.6259 for     56 degrees of freedom 
# Null hypothesis probability =   9.872765e-01
 
Photon flux (15-150 keV)    in 30.38 sec: 0.954805 ( -0.054588  0.054645 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.72329e-06 ( -1.11385e-07  1.11613e-07 ) ergs/cm2
 
Band function
Time interval is from   -0.356 sec. to   30.024 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 1.18371   ( 0.23011   0.23011 )
beta        : -2.11537    ( 2.11605   0.119027 )
Epeak [keV] : 22.3792      ( -23.8948 24.5728 )
Norm@50keV   : 2.14044    ( -2.14025   1307.95 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          34.54 using 59 PHA bins.
# Reduced chi-squared =         0.6279 for     55 degrees of freedom 
# Null hypothesis probability =   9.860526e-01
 
Photon flux (15-150 keV)    in 30.38 sec: 0.954273 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.73634e-06 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 10.5029  (  )
R^2/D10^2   : 0.348563  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         134.61 using 59 PHA bins.
# Reduced chi-squared =         2.3617 for     57 degrees of freedom 
# Null hypothesis probability =   3.184871e-08
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.415e-07   2.190e-08
25- 50  6.424e-07   3.828e-08
50-150  3.858e-07   5.134e-08
15-150  1.270e-06   7.003e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 65.9879       (-9.5665      12.1675)
Norm        : 4.74721       (-0.420952     0.472515)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          39.49 using 59 PHA bins.
# Reduced chi-squared =         0.6929 for     57 degrees of freedom 
# Null hypothesis probability =   9.625943e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.675e-07   2.734e-08
25- 50  5.752e-07   2.856e-08
50-150  7.064e-07   8.613e-08
15-150  1.649e-06   1.072e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.76447        (-0.847526      0.904991)
R1^2/D10^2  : 2.67524        (-1.12528      2.35085)
kT2 [keV]   : 20.2433        (-3.13514      4.54717)
R2^2/D10^2  : 2.00007E-02    (-0.0110155   0.0200596)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          37.38 using 59 PHA bins.
# Reduced chi-squared =         0.6796 for     55 degrees of freedom 
# Null hypothesis probability =   9.669309e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.858e-07   6.280e-08
25- 50  5.484e-07   7.853e-08
50-150  7.537e-07   1.650e-07
15-150  1.688e-06   2.649e-07

Peak spectrum fit

Power-law model
Time interval is from    3.648 sec. to    4.648 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.01889     ( -0.106909   0.108987 )
Norm@50keV  : 4.34019E-02    ( -0.00279784   0.00276556 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.26 using 59 PHA bins.
# Reduced chi-squared =         0.8292 for     57 degrees of freedom 
# Null hypothesis probability =   8.176047e-01
 
Photon flux (15-150 keV)    in 1 sec: 6.56748 ( -0.385276  0.386478 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.00676e-07 ( -2.44114e-08  2.45357e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    3.648 sec. to    4.648 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.08611     ( -0.385474   0.138468 )
Epeak [keV] : 58.6005      (   )
Norm@50keV  : 3.99031E-02    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.17 using 59 PHA bins.
# Reduced chi-squared =         0.8423 for     56 degrees of freedom 
# Null hypothesis probability =   7.936113e-01
 
Photon flux (15-150 keV)    in 1 sec: 6.56719 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.00516e-07 ( -1.2783e-08  2.4331e-08 ) ergs/cm2
 
Band function
Time interval is from    3.648 sec. to    4.648 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 3.61307   ( -4.13146   -4.13146 )
beta        : -2.07791    ( -0.136855   0.119427 )
Epeak [keV] : 21.4604      ( -21.2347 21.8399 )
Norm@50keV   : 1467.50    ( -1466.58   22271.9 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.35 using 59 PHA bins.
# Reduced chi-squared =         0.8245 for     55 degrees of freedom 
# Null hypothesis probability =   8.201206e-01
 
Photon flux (15-150 keV)    in 1 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]    : 10.1981  (  )
R^2/D10^2   : 2.67691  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         151.19 using 59 PHA bins.
# Reduced chi-squared =         2.6524 for     57 degrees of freedom 
# Null hypothesis probability =   1.824241e-10
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.706e-08   5.765e-09
25- 50  1.458e-07   9.500e-09
50-150  8.053e-08   1.147e-08
15-150  2.834e-07   1.850e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 72.1473       (-12.2656      16.4659)
Norm        : 31.1717       (-3.05739     3.4771)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.90 using 59 PHA bins.
# Reduced chi-squared =         0.9983 for     57 degrees of freedom 
# Null hypothesis probability =   4.787227e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.022e-08   6.495e-09
25- 50  1.287e-07   7.950e-09
50-150  1.690e-07   2.275e-08
15-150  3.779e-07   2.455e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.23596        (-0.738868      0.779008)
R1^2/D10^2  : 14.6992        (-5.36175      9.46441)
kT2 [keV]   : 26.1548        (-4.64342      6.95817)
R2^2/D10^2  : 5.46248E-02    (-0.0303992   0.0581511)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.21 using 59 PHA bins.
# Reduced chi-squared =         0.8038 for     55 degrees of freedom 
# Null hypothesis probability =   8.508635e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.645e-08   1.285e-08
25- 50  1.235e-07   1.615e-08
50-150  1.943e-07   5.130e-08
15-150  4.043e-07   7.520e-08
Plot creation:
Sun Jul  1 15:35:15 EDT 2018