batgrbproduct analysis for trigger=927839

batgrbproduct Analysis for Trigger=927839

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sat Oct  5 23:42:29 EDT 2019
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger927839/GCN5_download_cron
======================================================================

  Trigger: 00927839      Segment: 000

  BAT Trigger Time: 591917645.376   [s; MET]
      Trigger Stop: 591917645.888   [s; MET]
               UTC: 2019-10-04T21:33:41.682300    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 49.1767831678255   Dec: -39.6131376723519  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.55
     Image Trigger?:     NO
     Rate S/N Ratio:     18.5202591774521  [ if not an image trigger ]
     Image S/N Ratio:    9.55

  Flight Position:   [ source = BAT ]
    RA: 49.1767831678255   Dec: -39.6131376723519  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 49.2005958914706   Dec: -39.6369714698467  [deg; J2000]  
        { 03h 16m 48.1s , -39d 38' 13.1" }
         +/- 0.636734349081166 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.151365204303305 [arcmin] (formal 1-sigma fit error)
    SNR: 57.9666205376331
 
  Angular difference between Flight and Ground position is 1.804451 arcmin
 
  Partial Coding Fraction: 0.9765625    [ including projection effects ]

  Duration
     T90: 317.567999958992 +/- 70.0838163929186
        Measured from: 1.12800002098083
                   to: 318.695999979973     [s; relative to TRIGTIME]
     T50: 31.8880000114441 +/- 27.7426026271054
        Measured from: 3.77600002288818
                   to: 35.6640000343323     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 2.74799990653992     
                   to: 3.74799990653992     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -1.17200005054474     
                   to: 388.735999941826     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.071230   1.335710   1.522691   0.421000
           0.113230   0.119073   0.109940   0.109439 [error]
 Peak      0.132983   0.237805   0.224230   0.055639
           0.008050   0.009911   0.009865   0.007214 [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 2.52e-07 5.94e-07 1.11e-06 5.02e-06 3.01e-06 6.98e-06   erg/cm2
              Error 4.09e-08 5.58e-08 1.06e-07 1.12e-06 2.73e-07 1.18e-06   erg/cm2
Peak flux Power-law 1.24e+00 1.56e+00 1.43e+00 2.28e+00 5.00e+00 6.50e+00   ph/cm2/s
              Error 1.08e-01 8.30e-02 7.66e-02 2.59e-01 2.33e-01 3.31e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.43e-07 6.02e-07 1.13e-06 3.91e-06 2.98e-06 5.89e-06   erg/cm2
              Error 5.00e-08 6.13e-08 1.18e-07 2.24e-06 2.98e-07 1.76e-06   erg/cm2
Peak flux Cutoff-PL 1.14e+00 1.60e+00 1.49e+00 1.55e+00 4.93e+00 5.77e+00   ph/cm2/s
              Error 1.33e-01 9.26e-02 9.21e-02 4.96e-01 2.39e-01 5.43e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 1.07e+00 1.67e+00 1.43e+00 2.02e+00 4.91e+00 6.21e+00   ph/cm2/s
              Error 1.58e-01 1.15e-01 7.93e-02 -------- -------- 3.82e-01   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.096    0.149    -      -           7.39e-04 5.88e-05   54.970 57
CPL   0.925    0.463     346.8    0.0      8.85e-04 4.90e-04   54.700 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.128    0.079    -      -           4.30e-02 1.97e-03   65.780 57
CPL   0.759    0.314     184.4  282.8      6.40e-02 2.17e-02   61.390 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: 6.976000 sec.
T50 in the 50-300 keV band: 3.136000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  389.908   -1.172  388.736
T90   317.568    1.128  318.696
T50    31.888    3.776   35.664
Peak    1.000    2.748    3.748

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   49.2006 -39.6370 0.0033   14.0 -133.0       3.1773    58.0  TRIG_00927839       
------------------------------------------
 
Foreground time interval of the image:
 -1.172   8.525 (delta_t =   9.697 [sec])
Background time interval of the image:
-239.376 -57.076 (delta_t = 182.300 [sec])
-51.376  -1.172 (delta_t =  50.204 [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   -1.172 sec. to  388.736 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.09638     ( -0.149668   0.14738 )
Norm@50keV  : 7.38678E-04    ( -5.87773e-05   5.87496e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.97 using 59 PHA bins.
# Reduced chi-squared =         0.9644 for     57 degrees of freedom 
# Null hypothesis probability =   5.516376e-01
 
Photon flux (15-150 keV)    in 389.9 sec: 8.56518E-02 ( -0.00697392  0.00699049 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.01474e-06 ( -2.71557e-07  2.7394e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -1.172 sec. to  388.736 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.924925     ( -0.624067   0.301369 )
Epeak [keV] : 346.772      ( -346.772 -346.772 )
Norm@50keV  : 8.85422E-04    ( -0.000197504   0.000782421 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.70 using 59 PHA bins.
# Reduced chi-squared =         0.9768 for     56 degrees of freedom 
# Null hypothesis probability =   5.242305e-01
 
Photon flux (15-150 keV)    in 389.9 sec: 8.48503E-02 ( -0.0074556  0.0074202 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.97934e-06 ( -3.00453e-07  2.96032e-07 ) ergs/cm2
 
Band function
Time interval is from   -1.172 sec. to  388.736 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.943348   ( 0.845392   0.845392 )
beta        : -2.91907    ( 8.32972   18.2345 )
Epeak [keV] : 388.156      ( -199.368 -388.238 )
Norm@50keV   : 8.66942E-04    ( -0.000137219   0.000304288 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.70 using 59 PHA bins.
# Reduced chi-squared =         0.9946 for     55 degrees of freedom 
# Null hypothesis probability =   4.859072e-01
 
Photon flux (15-150 keV)    in 389.9 sec: 0.471219 (    ) 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]    : 20.4350  (-2.19257  2.57159)
R^2/D10^2   : 3.70692E-03  (-0.00115807   0.00162827)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          79.08 using 59 PHA bins.
# Reduced chi-squared =          1.387 for     57 degrees of freedom 
# Null hypothesis probability =   2.812273e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.153e-07   2.047e-08
25- 50  5.827e-07   8.051e-08
50-150  1.809e-06   2.790e-07
15-150  2.507e-06   2.749e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-17.0746      -200)
Norm        : 0.350033       (-0.0286722     0.0286722)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          80.32 using 59 PHA bins.
# Reduced chi-squared =          1.409 for     57 degrees of freedom 
# Null hypothesis probability =   2.261596e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.399e-07   4.400e-08
25- 50  6.539e-07   2.053e-07
50-150  1.434e-06   6.554e-07
15-150  2.428e-06   6.893e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.82433        (-2.45395      4.17597)
R1^2/D10^2  : 0.111902        (-0.090486      1.05324)
kT2 [keV]   : 27.1209        (-5.03565      13.5812)
R2^2/D10^2  : 1.37745E-03    (-0.00100586   0.00112669)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.84 using 59 PHA bins.
# Reduced chi-squared =          1.015 for     55 degrees of freedom 
# Null hypothesis probability =   4.430094e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.538e-07   1.209e-07
25- 50  5.631e-07   1.867e-07
50-150  2.093e-06   5.186e-07
15-150  2.910e-06   6.622e-07

Peak spectrum fit

Power-law model
Time interval is from    2.748 sec. to    3.748 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.12783     ( -0.0792878   0.0791123 )
Norm@50keV  : 4.29999E-02    ( -0.00197492   0.00197489 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.78 using 59 PHA bins.
# Reduced chi-squared =          1.154 for     57 degrees of freedom 
# Null hypothesis probability =   1.989847e-01
 
Photon flux (15-150 keV)    in 1 sec: 5.00200 ( -0.232927  0.233041 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.45712e-07 ( -2.33597e-08  2.33493e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    2.748 sec. to    3.748 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.759129     ( -0.324928   0.303026 )
Epeak [keV] : 184.384      ( -61.7344 503.766 )
Norm@50keV  : 6.40460E-02    ( -0.0174706   0.0259253 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.39 using 59 PHA bins.
# Reduced chi-squared =          1.096 for     56 degrees of freedom 
# Null hypothesis probability =   2.890983e-01
 
Photon flux (15-150 keV)    in 1 sec: 4.93351 ( -0.23948  0.23941 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.36812e-07 ( -2.4926e-08  2.4805e-08 ) ergs/cm2
 
Band function
Time interval is from    2.748 sec. to    3.748 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.759116   ( -0.101217   0.119747 )
beta        : -10.0000    ( 10   20 )
Epeak [keV] : 184.358      ( -48.6065 500.076 )
Norm@50keV   : 6.40433E-02    ( -0.0174927   0.0259388 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.39 using 59 PHA bins.
# Reduced chi-squared =          1.116 for     55 degrees of freedom 
# Null hypothesis probability =   2.579088e-01
 
Photon flux (15-150 keV)    in 1 sec: 4.90525 (    ) 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]    : 19.5281  (  )
R^2/D10^2   : 0.255967  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         141.15 using 59 PHA bins.
# Reduced chi-squared =         2.4763 for     57 degrees of freedom 
# Null hypothesis probability =   4.339452e-09
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.899e-08   1.770e-09
25- 50  9.310e-08   6.545e-09
50-150  2.622e-07   2.200e-08
15-150  3.743e-07   2.140e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 20.2212       (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         136.45 using 59 PHA bins.
# Reduced chi-squared =         2.3938 for     57 degrees of freedom 
# Null hypothesis probability =   1.830783e-08
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.035e-08   2.500e-09
25- 50  9.686e-08   5.075e-09
50-150  2.124e-07   1.265e-08
15-150  3.596e-07   3.700e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.41010        (-1.3452      1.53627)
R1^2/D10^2  : 2.15072        (-0.823148      1.50674)
kT2 [keV]   : 32.6472        (-4.74746      7.6636)
R2^2/D10^2  : 4.03606E-02    (-0.0198151   0.0282071)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.80 using 59 PHA bins.
# Reduced chi-squared =          1.033 for     55 degrees of freedom 
# Null hypothesis probability =   4.077465e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.486e-08   7.855e-09
25- 50  9.494e-08   1.431e-08
50-150  3.116e-07   6.915e-08
15-150  4.414e-07   8.215e-08
Plot creation:
Sat Oct  5 23:46:36 EDT 2019