batgrbproduct analysis for trigger=945521

batgrbproduct Analysis for Trigger=945521

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sun Dec 22 20:55:17 EST 2019
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger945521/GCN5_download_cron
======================================================================

  Trigger: 00945521      Segment: 000

  BAT Trigger Time: 598653577.28   [s; MET]
      Trigger Stop: 598653578.304   [s; MET]
               UTC: 2019-12-21T20:39:13.151900    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 154.832295571442   Dec: -38.141432610349  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    11.67
     Image Trigger?:     NO
     Rate S/N Ratio:     145.168867185771  [ if not an image trigger ]
     Image S/N Ratio:    11.67

  Flight Position:   [ source = BAT ]
    RA: 154.832295571442   Dec: -38.141432610349  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 154.830555795377   Dec: -38.1519689950725  [deg; J2000]  
        { 10h 19m 19.3s , -38d 09' 07.1" }
         +/- 1.14588306093097 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.321594426761446 [arcmin] (formal 1-sigma fit error)
    SNR: 25.039879688671
 
  Angular difference between Flight and Ground position is 0.637491 arcmin
 
  Partial Coding Fraction: 0.1201172    [ including projection effects ]

  Duration
     T90: 48 +/- 16
        Measured from: -15.2799998521805
                   to: 32.7200001478195     [s; relative to TRIGTIME]
     T50: 16 +/- 16
        Measured from: -15.2799998521805
                   to: 0.720000147819519     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 8.22000002861023     
                   to: 9.22000002861023     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -15.2799999713898     
                   to: 96.7200000286102     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     5.108000   9.430897   8.912686   2.931479
           0.180369   0.203728   0.195057   0.156618 [error]
 Peak      0.149421   0.246408   0.176474   0.057931
           0.026706   0.030840   0.026763   0.020410 [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 1.92e-06 4.13e-06 7.00e-06 2.72e-05 1.92e-05 4.03e-05   erg/cm2
              Error 1.03e-07 1.30e-07 1.99e-07 1.80e-06 5.10e-07 1.88e-06   erg/cm2
Peak flux Power-law 1.89e+00 1.63e+00 9.58e-01 8.44e-01 4.84e+00 5.32e+00   ph/cm2/s
              Error 4.24e-01 2.50e-01 1.93e-01 3.18e-01 7.43e-01 8.04e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.80e-06 4.19e-06 7.19e-06 2.00e-05 1.90e-05 3.32e-05   erg/cm2
              Error 1.32e-07 1.39e-07 2.42e-07 4.46e-06 5.38e-07 4.42e-06   erg/cm2
Peak flux Cutoff-PL 1.59e+00 1.88e+00 1.07e+00 2.87e-01 4.76e+00 4.82e+00   ph/cm2/s
              Error 5.14e-01 3.46e-01 2.40e-01 3.38e-01 7.54e-01 8.01e-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    1.240    0.046    -      -           1.71e-02 4.39e-04   43.240 57
CPL   0.993    0.185     237.7  261.6      2.19e-02 4.01e-03   37.790 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.766    0.237    -      -           3.56e-02 5.78e-03   88.050 57
CPL   0.525    1.273      57.4   50.3      1.61e-01 4.20e-01   84.630 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: 21.504000 sec.
T50 in the 50-300 keV band: 5.312000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  112.000  -15.280   96.720
T90    48.000  -15.280   32.720
T50    16.000  -15.280    0.720
Peak    1.000    8.220    9.220

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  154.8306 -38.1520 0.0076   39.8  119.3      24.4156    25.0  TRIG_00945521       
------------------------------------------
 
Foreground time interval of the image:
-15.280  14.821 (delta_t =  30.101 [sec])
Background time interval of the image:
-239.280 -15.280 (delta_t = 224.000 [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  -15.280 sec. to   96.720 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.23981     ( -0.046159   0.0459601 )
Norm@50keV  : 1.71057E-02    ( -0.000438915   0.000438599 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.24 using 59 PHA bins.
# Reduced chi-squared =         0.7586 for     57 degrees of freedom 
# Null hypothesis probability =   9.108279e-01
 
Photon flux (15-150 keV)    in 112 sec: 2.01984 ( -0.0560952  0.0562124 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.92256e-05 ( -5.10116e-07  5.10272e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -15.280 sec. to   96.720 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.993270     ( -0.188957   0.181305 )
Epeak [keV] : 237.678      ( -77.6443 445.562 )
Norm@50keV  : 2.19248E-02    ( -0.00357434   0.00445069 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          37.79 using 59 PHA bins.
# Reduced chi-squared =         0.6748 for     56 degrees of freedom 
# Null hypothesis probability =   9.705265e-01
 
Photon flux (15-150 keV)    in 112 sec: 1.99072 ( -0.05952  0.05971 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.90211e-05 ( -5.39392e-07  5.35808e-07 ) ergs/cm2
 
Band function
Time interval is from  -15.280 sec. to   96.720 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.893226   ( -1.67778   4.09257 )
beta        : -1.31479    ( -0.0983352   0.0641063 )
Epeak [keV] : 43.1691      ( -11.3439 64.0255 )
Norm@50keV   : 0.402989    ( -0.402988   189.271 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          32.50 using 59 PHA bins.
# Reduced chi-squared =         0.5909 for     55 degrees of freedom 
# Null hypothesis probability =   9.932577e-01
 
Photon flux (15-150 keV)    in 112 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]    : 19.9877  (  )
R^2/D10^2   : 9.10108E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         312.50 using 59 PHA bins.
# Reduced chi-squared =         5.4824 for     57 degrees of freedom 
# Null hypothesis probability =   6.267312e-37
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.852e-07   4.049e-08
25- 50  3.910e-06   1.546e-07
50-150  1.158e-05   4.631e-07
15-150  1.627e-05   4.872e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 8.63919       (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         186.86 using 59 PHA bins.
# Reduced chi-squared =         3.2782 for     57 degrees of freedom 
# Null hypothesis probability =   1.007217e-15
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.409e-06   7.336e-08
25- 50  4.635e-06   1.243e-07
50-150  1.016e-05   2.643e-07
15-150  1.721e-05   5.096e-07
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 9.05328        (-0.873121      0.94131)
R1^2/D10^2  : 0.756817        (-0.192109      0.277932)
kT2 [keV]   : 35.1306        (-3.65752      5.11279)
R2^2/D10^2  : 1.16338E-02    (-0.0041152   0.00521236)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.49 using 59 PHA bins.
#Fit statistic : Chi-Squared =          32.99 using 59 PHA bins.
# Reduced chi-squared =         0.9907 for     55 degrees of freedom 
# Reduced chi-squared =         0.5997 for     55 degrees of freedom 
# Null hypothesis probability =   4.940588e-01
# Null hypothesis probability =   9.919104e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.581e-06   4.316e-07
25- 50  4.023e-06   6.619e-07
50-150  1.226e-05   1.495e-06
15-150  1.786e-05   2.027e-06

Peak spectrum fit

Power-law model
Time interval is from    8.220 sec. to    9.220 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.76563     ( -0.231131   0.243101 )
Norm@50keV  : 3.56088E-02    ( -0.00582377   0.00573259 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          88.05 using 59 PHA bins.
# Reduced chi-squared =          1.545 for     57 degrees of freedom 
# Null hypothesis probability =   5.189545e-03
 
Photon flux (15-150 keV)    in 1 sec: 4.84296 ( -0.74266  0.743301 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.28301e-07 ( -5.45012e-08  5.48803e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    8.220 sec. to    9.220 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.524820     ( -1.40574   1.14012 )
Epeak [keV] : 57.3694      ( -12.4513 88.1632 )
Norm@50keV  : 0.161179    ( -0.161186   0.677911 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          84.63 using 59 PHA bins.
# Reduced chi-squared =          1.511 for     56 degrees of freedom 
# Null hypothesis probability =   8.033430e-03
 
Photon flux (15-150 keV)    in 1 sec: 4.75574 ( -0.75569  0.7523 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.15717e-07 ( -5.4984e-08  5.6082e-08 ) ergs/cm2
 
Band function
Time interval is from    8.220 sec. to    9.220 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.486808   ( -1.01076   2.9256 )
beta        : -3.03451    ( 3.01471   1.20976 )
Epeak [keV] : 56.7260      ( -24.2045 25.8742 )
Norm@50keV   : 0.169340    ( -0.169465   17.7056 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          84.43 using 59 PHA bins.
# Reduced chi-squared =          1.535 for     55 degrees of freedom 
# Null hypothesis probability =   6.542978e-03
 
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]    : 13.3396  (-1.98754  2.20661)
R^2/D10^2   : 0.874743  (-0.38243   0.695488)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          89.70 using 59 PHA bins.
# Reduced chi-squared =          1.574 for     57 degrees of freedom 
# Null hypothesis probability =   3.698541e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.299e-08   9.155e-09
25- 50  1.168e-07   2.464e-08
50-150  1.333e-07   3.888e-08
15-150  2.831e-07   5.490e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 99.9061       (-31.9332      -99.95)
Norm        : 22.0158       (-4.34831     4.35155)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          85.87 using 59 PHA bins.
# Reduced chi-squared =          1.506 for     57 degrees of freedom 
# Null hypothesis probability =   8.020349e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.754e-08   1.169e-08
25- 50  9.948e-08   1.834e-08
50-150  1.611e-07   8.209e-08
15-150  3.181e-07   9.150e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 2.19823        (-2.19184      7.45607)
R1^2/D10^2  : 951.946        (-980.268      -981.615)
kT2 [keV]   : 14.5370        (-2.3583      -14.5301)
R2^2/D10^2  : 0.605240    (-0.603526   0.335185)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          84.28 using 59 PHA bins.
# Reduced chi-squared =          1.532 for     55 degrees of freedom 
# Null hypothesis probability =   6.745116e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.634e-08   1.541e-08
25- 50  1.046e-07   2.860e-08
50-150  1.471e-07   5.329e-08
15-150  2.981e-07   7.250e-08
Plot creation:
Sun Dec 22 20:58:28 EST 2019