batgrbproduct analysis for trigger=948361

batgrbproduct Analysis for Trigger=948361

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Fri Jan 10 05:35:21 EST 2020
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger948361/GCN5_download_cron
======================================================================

  Trigger: 00948361      Segment: 000

  BAT Trigger Time: 600227200.448   [s; MET]
      Trigger Stop: 600227208.64   [s; MET]
               UTC: 2020-01-09T01:46:16.218040    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 307.170901934691   Dec: 53.0032235193214  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    12.72
     Image Trigger?:     NO
     Rate S/N Ratio:     19.5703857907809  [ if not an image trigger ]
     Image S/N Ratio:    12.72

  Flight Position:   [ source = BAT ]
    RA: 307.170901934691   Dec: 53.0032235193214  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 307.115530351627   Dec: 52.9882365336681  [deg; J2000]  
        { 20h 28m 27.7s , +52d 59' 17.7" }
         +/- 1.17999394356625 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.459877164915055 [arcmin] (formal 1-sigma fit error)
    SNR: 24.0122569766253
 
  Angular difference between Flight and Ground position is 2.192490 arcmin
 
  Partial Coding Fraction: 1    [ including projection effects ]

  Duration
     T90: 112 +/- 32
        Measured from: -31.4479998350143
                   to: 80.5520001649857     [s; relative to TRIGTIME]
     T50: 32 +/- 16
        Measured from: -15.4479998350143
                   to: 16.5520001649857     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 8.05200004577637     
                   to: 9.05200004577637     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -31.4479999542236     
                   to: 112.552000045776     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.813580   1.147689   0.980927   0.272848
           0.079944   0.082185   0.071997   0.062987 [error]
 Peak      0.025081   0.032725   0.029423  -0.001035
           0.006881   0.007185   0.006233   0.005544 [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 2.28e-07 4.73e-07 7.65e-07 2.77e-06 2.12e-06 4.24e-06   erg/cm2
              Error 3.25e-08 3.91e-08 7.07e-08 5.88e-07 1.75e-07 6.30e-07   erg/cm2
Peak flux Power-law 1.99e-01 2.26e-01 1.83e-01 2.48e-01 6.99e-01 8.57e-01   ph/cm2/s
              Error 7.71e-02 5.59e-02 4.92e-02 1.36e-01 1.60e-01 2.02e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.29e-07 4.74e-07 7.64e-07 2.73e-06 2.11e-06 4.19e-06   erg/cm2
              Error 3.27e-08 3.86e-08 7.00e-08 6.66e-07 1.73e-07 6.93e-07   erg/cm2
Peak flux Cutoff-PL 1.68e-01 2.53e-01 1.96e-01 7.97e-02 6.74e-01 6.97e-01   ph/cm2/s
              Error 8.79e-02 7.19e-02 5.84e-02 1.59e-01 1.63e-01 2.37e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 2.37e-01 3.13e-01 2.67e-01 2.42e-01 9.34e-01 1.06e+00   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    1.306    0.137    -      -           1.49e-03 1.09e-04   45.420 57
CPL   1.301    0.138    9999.4    0.0      1.49e-03 3.42e-04   45.440 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.301    0.369    -      -           5.86e-03 1.33e-03   70.300 57
CPL   0.203    1.730      78.8  466.5      2.19e-02 1.42e-01   68.810 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: 40.768000 sec.
T50 in the 50-300 keV band: 23.040000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  144.000  -31.448  112.552
T90   112.000  -31.448   80.552
T50    32.000  -15.448   16.552
Peak    1.000    8.052    9.052

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  307.1155 +52.9882 0.0080   15.2 -179.9       3.0266    24.0  TRIG_00948361       
------------------------------------------
 
Foreground time interval of the image:
-31.448  49.253 (delta_t =  80.701 [sec])
Background time interval of the image:
-239.448 -31.448 (delta_t = 208.000 [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  -31.448 sec. to  112.552 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.30611     ( -0.137704   0.136647 )
Norm@50keV  : 1.48939E-03    ( -0.000109413   0.00010932 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.42 using 59 PHA bins.
# Reduced chi-squared =         0.7968 for     57 degrees of freedom 
# Null hypothesis probability =   8.654366e-01
 
Photon flux (15-150 keV)    in 144 sec: 0.177890 ( -0.0134912  0.0135369 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.11624e-06 ( -1.74272e-07  1.75442e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -31.448 sec. to  112.552 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.30136     ( -0.137621   0.138597 )
Epeak [keV] : 9999.36      ( -9999.36 -9999.36 )
Norm@50keV  : 1.49289E-03    ( -0.000109783   0.000574356 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.44 using 59 PHA bins.
# Reduced chi-squared =         0.8114 for     56 degrees of freedom 
# Null hypothesis probability =   8.424154e-01
 
Photon flux (15-150 keV)    in 144 sec: 0.177900 ( -0.013529  0.013452 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.11327e-06 ( -1.71173e-07  1.74787e-07 ) ergs/cm2
 
Band function
Time interval is from  -31.448 sec. to  112.552 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.00182   ( 1.00044   1.00044 )
beta        : -1.30658    ( 1.30654   0.138186 )
Epeak [keV] : 56.5805      ( -56.993 -56.993 )
Norm@50keV   : 2.79295E-03    ( -0.00119814   135309 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.41 using 59 PHA bins.
# Reduced chi-squared =         0.8257 for     55 degrees of freedom 
# Null hypothesis probability =   8.182704e-01
 
Photon flux (15-150 keV)    in 144 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]    : 18.0675  (-1.94529  2.26762)
R^2/D10^2   : 1.07321E-02  (-0.00347479   0.005021)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         101.11 using 59 PHA bins.
# Reduced chi-squared =         1.7739 for     57 degrees of freedom 
# Null hypothesis probability =   2.891308e-04
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.009e-07   1.547e-08
25- 50  4.679e-07   5.479e-08
50-150  1.110e-06   1.519e-07
15-150  1.678e-06   1.706e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-21.7144      -200)
Norm        : 0.735968       (-0.0545318     0.0545318)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.06 using 59 PHA bins.
# Reduced chi-squared =          1.001 for     57 degrees of freedom 
# Null hypothesis probability =   4.729803e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.640e-07   2.160e-08
25- 50  5.078e-07   1.151e-07
50-150  1.114e-06   3.589e-07
15-150  1.885e-06   4.580e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.96263        (-1.67132      2.02791)
R1^2/D10^2  : 0.180502        (-0.103096      0.310651)
kT2 [keV]   : 32.9073        (-7.28903      15.9005)
R2^2/D10^2  : 1.31527E-03    (-0.000896652   0.00166173)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.95 using 59 PHA bins.
# Reduced chi-squared =         0.8536 for     55 degrees of freedom 
# Null hypothesis probability =   7.716626e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.316e-07   7.513e-08
25- 50  4.663e-07   1.274e-07
50-150  1.464e-06   5.653e-07
15-150  2.162e-06   6.264e-07

Peak spectrum fit

Power-law model
Time interval is from    8.052 sec. to    9.052 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.30095     ( -0.374319   0.364464 )
Norm@50keV  : 5.85906E-03    ( -0.00132784   0.00132431 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          70.30 using 59 PHA bins.
# Reduced chi-squared =          1.233 for     57 degrees of freedom 
# Null hypothesis probability =   1.110107e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.699129 ( -0.159353  0.159761 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.78837e-08 ( -1.43938e-08  1.47339e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    8.052 sec. to    9.052 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.203057     ( -2.19536   1.26483 )
Epeak [keV] : 78.7610      ( -28.2643 904.708 )
Norm@50keV  : 2.19282E-02    ( -0.0219266   0.262172 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.81 using 59 PHA bins.
# Reduced chi-squared =          1.229 for     56 degrees of freedom 
# Null hypothesis probability =   1.169117e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.673534 ( -0.163068  0.163767 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.26314e-08 ( -1.52852e-08  1.64633e-08 ) ergs/cm2
 
Band function
Time interval is from    8.052 sec. to    9.052 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.95578   ( -5.69148   -4.95578 )
beta        : -1.59003    ( -0.692815   0.478169 )
Epeak [keV] : 30.3624      ( -9.71597 20.449 )
Norm@50keV   : 170.871    ( -37.433   4384.49 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.50 using 59 PHA bins.
# Reduced chi-squared =          1.227 for     55 degrees of freedom 
# Null hypothesis probability =   1.200373e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.933780 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.39217e-08 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 15.6953  (-3.63456  5.15254)
R^2/D10^2   : 7.28662E-02  (-0.0457223   0.108582)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          70.63 using 59 PHA bins.
# Reduced chi-squared =          1.239 for     57 degrees of freedom 
# Null hypothesis probability =   1.058886e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.727e-09   1.873e-09
25- 50  1.542e-08   5.967e-09
50-150  2.636e-08   1.166e-08
15-150  4.551e-08   1.850e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.360       (-95.9423      -199.362)
Norm        : 2.89636       (-0.652994     0.654408)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          70.74 using 59 PHA bins.
# Reduced chi-squared =          1.241 for     57 degrees of freedom 
# Null hypothesis probability =   1.043253e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.212e-09   4.341e-09
25- 50  1.387e-08   8.155e-09
50-150  3.043e-08   1.794e-08
15-150  5.151e-08   3.089e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 25.8855        (-25.1217      -25.1217)
R1^2/D10^2  : 9.46851E-03        (-0.0107592      0.0948461)
kT2 [keV]   : 8.57461        (-8.34964      -8.34964)
R2^2/D10^2  : 0.316654    (-0.335538   -0.335538)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.36 using 59 PHA bins.
# Reduced chi-squared =          1.243 for     55 degrees of freedom 
# Null hypothesis probability =   1.063806e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.493e-09   3.264e-09
25- 50  1.492e-08   8.440e-09
50-150  3.369e-08   1.918e-08
15-150  5.411e-08   2.715e-08
Plot creation:
Fri Jan 10 05:39:16 EST 2020