batgrbproduct analysis for trigger=770528

batgrbproduct Analysis for Trigger=770528

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Mon Sep  4 16:27:49 EDT 2017
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger770528/GCN5_download_cron
======================================================================

  Trigger: 00770528      Segment: 000

  BAT Trigger Time: 526135766.848   [s; MET]
      Trigger Stop: 526135767.872   [s; MET]
               UTC: 2017-09-03T12:49:07.219440    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 254.511712851535   Dec: 34.9835881466908  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.84
     Image Trigger?:     NO
     Rate S/N Ratio:     17.7763888346312  [ if not an image trigger ]
     Image S/N Ratio:    9.84

  Flight Position:   [ source = BAT ]
    RA: 254.511712851535   Dec: 34.9835881466908  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 254.523905092182   Dec: 34.9832273970707  [deg; J2000]  
        { 16h 58m 05.7s , +34d 58' 59.6" }
         +/- 1.2094873157594 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.457164629238565 [arcmin] (formal 1-sigma fit error)
    SNR: 23.1801636069336
 
  Angular difference between Flight and Ground position is 0.599750 arcmin
 
  Partial Coding Fraction: 0.3007812    [ including projection effects ]

  Duration
     T90: 28.7679999470711 +/- 3.59505880999471
        Measured from: -5.05199986696243
                   to: 23.7160000801086     [s; relative to TRIGTIME]
     T50: 10.3999999761581 +/- 1.75810802264541
        Measured from: 1.0320001244545
                   to: 11.4320001006126     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.579999983310699     
                   to: 1.5799999833107     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -8.85199999809265     
                   to: 25.7039999961853     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.236284   1.449679   0.843482   0.303102
           0.082406   0.080996   0.067679   0.054536 [error]
 Peak      0.124290   0.165090   0.103280   0.036421
           0.016113   0.017125   0.013980   0.010451 [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 4.93e-07 6.96e-07 7.28e-07 1.40e-06 2.36e-06 3.32e-06   erg/cm2
              Error 5.17e-08 4.50e-08 6.94e-08 2.78e-07 1.63e-07 3.39e-07   erg/cm2
Peak flux Power-law 1.63e+00 1.32e+00 7.24e-01 5.82e-01 3.93e+00 4.25e+00   ph/cm2/s
              Error 2.98e-01 1.57e-01 1.18e-01 1.85e-01 4.72e-01 4.94e-01   ph/cm2/s
 
Fluence   Cutoff-PL 4.94e-07 7.00e-07 7.26e-07 1.29e-06 2.35e-06 3.21e-06   erg/cm2
              Error 5.17e-08 4.98e-08 6.93e-08 4.26e-07 1.70e-07 5.22e-07   erg/cm2
Peak flux Cutoff-PL 1.62e+00 1.33e+00 7.26e-01 5.46e-01 3.93e+00 4.22e+00   ph/cm2/s
              Error 3.04e-01 1.86e-01 1.22e-01 2.98e-01 4.76e-01 5.75e-01   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    1.935    0.119    -      -           7.42e-03 5.20e-04   73.580 57
CPL   1.919    0.474     230.1    0.0      7.57e-03 0.00e+00   73.600 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.867    0.202    -      -           2.78e-02 3.54e-03   61.690 57
CPL   1.824    0.759     181.8    0.0      2.94e-02 0.00e+00   61.690 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: 22.144000 sec.
T50 in the 50-300 keV band: 9.984000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   34.556   -8.852   25.704
T90    28.768   -5.052   23.716
T50    10.400    1.032   11.432
Peak    1.000    0.580    1.580

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  254.5239 +34.9832 0.0083   46.7  -29.3       3.8599    23.2  TRIG_00770528       
------------------------------------------
 
Foreground time interval of the image:
 -8.852  25.704 (delta_t =  34.556 [sec])
Background time interval of the image:
-239.848  -8.852 (delta_t = 230.996 [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   -8.852 sec. to   25.704 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.93501     ( -0.118166   0.120603 )
Norm@50keV  : 7.41745E-03    ( -0.00052308   0.000517626 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          73.58 using 59 PHA bins.
# Reduced chi-squared =          1.291 for     57 degrees of freedom 
# Null hypothesis probability =   6.879541e-02
 
Photon flux (15-150 keV)    in 34.56 sec: 1.08066 ( -0.0728015  0.0730871 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.35812e-06 ( -1.62248e-07  1.62965e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -8.852 sec. to   25.704 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.91880     ( -0.40817   0.538922 )
Epeak [keV] : 230.127      (   )
Norm@50keV  : 7.56725E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          73.60 using 59 PHA bins.
# Reduced chi-squared =          1.314 for     56 degrees of freedom 
# Null hypothesis probability =   5.743846e-02
 
Photon flux (15-150 keV)    in 34.56 sec: 1.08105 ( -0.07515  0.0718 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.35062e-06 ( -1.67944e-07  1.71739e-07 ) ergs/cm2
 
Band function
Time interval is from   -8.852 sec. to   25.704 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -2.25190E-02   ( -1.36936   -1.36936 )
beta        : -2.00641    ( -0.146149   0.14869 )
Epeak [keV] : 27.6344      ( -24.3481 179.151 )
Norm@50keV   : 0.175401    ( -0.175102   1025.3 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          72.17 using 59 PHA bins.
# Reduced chi-squared =          1.312 for     55 degrees of freedom 
# Null hypothesis probability =   5.999760e-02
 
Photon flux (15-150 keV)    in 34.56 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]    : 10.9744  (  )
R^2/D10^2   : 0.341207  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         145.90 using 59 PHA bins.
# Reduced chi-squared =         2.5596 for     57 degrees of freedom 
# Null hypothesis probability =   9.852086e-10
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.966e-07   3.783e-08
25- 50  8.362e-07   6.065e-08
50-150  5.679e-07   9.245e-08
15-150  1.701e-06   1.244e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 84.7056       (-16.8167      24.1293)
Norm        : 4.89098       (-0.503099     0.578218)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          78.93 using 59 PHA bins.
# Reduced chi-squared =          1.385 for     57 degrees of freedom 
# Null hypothesis probability =   2.883364e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.400e-07   4.717e-08
25- 50  7.342e-07   4.596e-08
50-150  1.076e-06   2.910e-07
15-150  2.250e-06   2.523e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.37079        (-1.01766      1.03381)
R1^2/D10^2  : 1.28991        (-0.485622      0.924986)
kT2 [keV]   : 33.7573        (-9.00311      19.5208)
R2^2/D10^2  : 3.77173E-03    (-0.00274096   0.00727095)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          71.90 using 59 PHA bins.
# Reduced chi-squared =          1.307 for     55 degrees of freedom 
# Null hypothesis probability =   6.266683e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.308e-07   7.697e-08
25- 50  7.572e-07   1.087e-07
50-150  1.182e-06   5.371e-07
15-150  2.370e-06   6.024e-07

Peak spectrum fit

Power-law model
Time interval is from    0.580 sec. to    1.580 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.86656     ( -0.199059   0.204978 )
Norm@50keV  : 2.77886E-02    ( -0.00356681   0.00350707 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.69 using 59 PHA bins.
# Reduced chi-squared =          1.082 for     57 degrees of freedom 
# Null hypothesis probability =   3.120551e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.93253 ( -0.471413  0.472168 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.55469e-07 ( -3.24775e-08  3.27077e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.580 sec. to    1.580 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.82372     ( -0.883573   0.634984 )
Epeak [keV] : 181.800      (   )
Norm@50keV  : 2.93613E-02    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.69 using 59 PHA bins.
# Reduced chi-squared =          1.102 for     56 degrees of freedom 
# Null hypothesis probability =   2.800896e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.92748 ( -0.47676  0.47518 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.54691e-07 ( -3.5995e-08  3.3285e-08 ) ergs/cm2
 
Band function
Time interval is from    0.580 sec. to    1.580 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.64220   ( -6.41542   -4.6422 )
beta        : -2.04717    ( -0.285466   0.251463 )
Epeak [keV] : 25.2054      ( -5.36346 4.70596 )
Norm@50keV   : 2133.63    ( -245.654   54167.4 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.73 using 59 PHA bins.
# Reduced chi-squared =          1.068 for     55 degrees of freedom 
# Null hypothesis probability =   3.404042e-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]    : 10.4937  (-1.38527  1.67385)
R^2/D10^2   : 1.55203  (-0.680147   1.1375)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          81.22 using 59 PHA bins.
# Reduced chi-squared =          1.425 for     57 degrees of freedom 
# Null hypothesis probability =   1.924372e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.532e-08   7.250e-09
25- 50  9.386e-08   1.594e-08
50-150  5.623e-08   1.605e-08
15-150  1.854e-07   2.845e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 90.4119       (-29.2114      58.219)
Norm        : 17.8088       (-2.99709     3.74887)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.66 using 59 PHA bins.
# Reduced chi-squared =          1.099 for     57 degrees of freedom 
# Null hypothesis probability =   2.824666e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.647e-08   7.910e-09
25- 50  7.868e-08   1.011e-08
50-150  1.202e-07   5.161e-08
15-150  2.453e-07   5.580e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.10203        (-1.74084      1.69577)
R1^2/D10^2  : 3.65452        (-1.57954      4.58898)
kT2 [keV]   : 54.5386        (-33.1744      -58.034)
R2^2/D10^2  : 3.53375E-03    (-0.00269784   0.0373323)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.50 using 59 PHA bins.
# Reduced chi-squared =          1.045 for     55 degrees of freedom 
# Null hypothesis probability =   3.827606e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.485e-08   1.640e-08
25- 50  8.622e-08   2.799e-08
50-150  1.260e-07   6.353e-08
15-150  2.571e-07   8.234e-08
Plot creation:
Mon Sep  4 16:58:39 EDT 2017