batgrbproduct analysis for trigger=1110821

batgrbproduct Analysis for Trigger=1110821

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Sun Jun 19 11:47:22 EDT 2022
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/prebascript/trigger1110821/GCN5_download_cron
======================================================================

  Trigger: 01110821      Segment: 000

  BAT Trigger Time: 677236259.264   [s; MET]
      Trigger Stop: 677236261.312   [s; MET]
               UTC: 2022-06-18T09:10:29.923380    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 38.9662491492886   Dec: 55.2135808003858  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.03
     Image Trigger?:     NO
     Rate S/N Ratio:     7.14142842854285  [ if not an image trigger ]
     Image S/N Ratio:    9.03

  Flight Position:   [ source = BAT ]
    RA: 38.9662491492886   Dec: 55.2135808003858  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 38.9860082551592   Dec: 55.2180434141006  [deg; J2000]  
        { 02h 35m 56.6s , +55d 13' 05.0" }
         +/- 2.03527481904523 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.884027965980396 [arcmin] (formal 1-sigma fit error)
    SNR: 11.0211850668917
 
  Angular difference between Flight and Ground position is 0.727412 arcmin
 
  Partial Coding Fraction: 0.2167969    [ including projection effects ]

  Duration
     T90: 96 +/- 65.9696900098826
        Measured from: -15.2639999389648
                   to: 80.7360000610352     [s; relative to TRIGTIME]
     T50: 32 +/- 16
        Measured from: -15.2639999389648
                   to: 16.7360000610352     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 8.23599994182587     
                   to: 9.23599994182587     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -15.2640000581741     
                   to: 128.735999941826     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.731667   1.431160   1.188340  -0.027320
           0.120170   0.125734   0.110197   0.093889 [error]
 Peak      0.028228   0.027155   0.027808   0.004243
           0.013563   0.015211   0.012906   0.010947 [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 3.63e-07 6.25e-07 8.20e-07 2.19e-06 2.40e-06 3.99e-06   erg/cm2
              Error 6.00e-08 6.63e-08 1.06e-07 5.81e-07 2.63e-07 6.72e-07   erg/cm2
Peak flux Power-law 2.90e-01 2.74e-01 1.79e-01 1.81e-01 8.17e-01 9.24e-01   ph/cm2/s
              Error 2.16e-01 1.35e-01 1.38e-01 2.25e-01 3.88e-01 4.19e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.87e-07 7.11e-07 8.94e-07 5.23e-07 2.24e-06 2.41e-06   erg/cm2
              Error 7.16e-08 8.57e-08 1.28e-07 4.18e-07 2.76e-07 4.85e-07   erg/cm2
Peak flux Cutoff-PL 1.87e-01 3.06e-01 2.16e-01 5.34e-02 7.52e-01 7.68e-01   ph/cm2/s
              Error 2.52e-01 1.69e-01 2.13e-01 2.07e-01 5.89e-01 6.46e-01   ph/cm2/s
 
Fluence        Band 2.95e-07 6.93e-07 8.97e-07 6.73e-07 2.30e-06 2.57e-06   erg/cm2
              Error 6.78e-08 8.84e-08 -------- -------- -------- 5.01e-07   erg/cm2
Peak flux      Band 1.76e-01 6.36e-01 2.91e-01 6.01e-03 1.11e+00 1.11e+00   ph/cm2/s
              Error 7.43e-02 2.03e-01 1.07e-01 -------- 3.44e-01 3.46e-01   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.608    0.164    -      -           1.79e-03 1.86e-04   63.410 57
CPL   0.262    0.847      65.0   16.9      8.46e-03 1.02e-02   53.400 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.612    0.820    -      -           6.34e-03 2.96e-03   53.910 57
CPL  -0.202    0.878      65.0    0.0      4.54e-02 0.00e+00   53.440 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: 17.856000 sec.
T50 in the 50-300 keV band: 8.896000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  144.000  -15.264  128.736
T90    96.000  -15.264   80.736
T50    32.000  -15.264   16.736
Peak    1.000    8.236    9.236

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   38.9860 +55.2180 0.0175   47.0  -41.2       2.6768    11.0  TRIG_01110821       
------------------------------------------
 
Foreground time interval of the image:
-15.264  20.956 (delta_t =  36.220 [sec])
Background time interval of the image:
-62.963 -27.134 (delta_t =  35.829 [sec])
-26.264 -15.264 (delta_t =  11.000 [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
Multiple GTIs in the spectrum
tstart tstop
-15.264000 20.956000
21.736000 128.736000
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.60791     ( -0.162345   0.164672 )
Norm@50keV  : 1.79492E-03    ( -0.00018636   0.000185696 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.41 using 59 PHA bins.
# Reduced chi-squared =          1.112 for     57 degrees of freedom 
# Null hypothesis probability =   2.608187e-01
 
Photon flux (15-150 keV)    in 143.2 sec: 0.231223 ( -0.0243041  0.0243733 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.40152e-06 ( -2.61709e-07  2.63299e-07 ) ergs/cm2
 
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-15.264000 20.956000
21.736000 128.736000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.261876     ( -0.926223   0.768639 )
Epeak [keV] : 65.0076      ( -10.3694 23.3611 )
Norm@50keV  : 8.45766E-03    ( -0.00489332   0.0154762 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.40 using 59 PHA bins.
# Reduced chi-squared =         0.9536 for     56 degrees of freedom 
# Null hypothesis probability =   5.739310e-01
 
Photon flux (15-150 keV)    in 143.2 sec: 0.219545 ( -0.025103  0.025197 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.24258e-06 ( -2.7344e-07  2.78223e-07 ) ergs/cm2
 
Band function
Multiple GTIs in the spectrum
tstart tstop
-15.264000 20.956000
21.736000 128.736000
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.261665   ( -0.522174   1.3527 )
beta        : -10.0000    ( 10   5.32907e-15 )
Epeak [keV] : 64.9937      ( -10.3726 20.5402 )
Norm@50keV   : 8.46035E-03    ( -0.00489804   0.0154611 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.40 using 59 PHA bins.
# Reduced chi-squared =         0.9709 for     55 degrees of freedom 
# Null hypothesis probability =   5.360058e-01
 
Photon flux (15-150 keV)    in 143.2 sec: 0.222484 ( 6.77752  -0.028943 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.29925e-06 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 14.6047  (-1.50393  1.69408)
R^2/D10^2   : 2.96751E-02  (-0.00985069   0.0144227)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.82 using 59 PHA bins.
# Reduced chi-squared =          1.084 for     57 degrees of freedom 
# Null hypothesis probability =   3.081854e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.905e-07   3.673e-08
25- 50  7.384e-07   1.012e-07
50-150  1.059e-06   2.007e-07
15-150  1.988e-06   2.427e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 160.823       (-55.942      -160.025)
Norm        : 0.963961       (-0.106151     0.128668)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.523e-07   6.179e-08
25- 50  6.595e-07   2.527e-07
50-150  1.339e-06   7.029e-07
15-150  2.350e-06   1.038e-06
Double BB
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.35265        (-3.22252      4.00827)
R1^2/D10^2  : 0.156600        (-0.107098      0.929899)
kT2 [keV]   : 19.9078        (-4.25738      12.5958)
R2^2/D10^2  : 7.40673E-03    (-0.00657633   0.0123377)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.856e-07   1.602e-07
25- 50  7.104e-07   3.719e-07
50-150  1.244e-06   6.694e-07
15-150  2.240e-06   1.133e-06

Peak spectrum fit

Power-law model
Time interval is from    8.236 sec. to    9.236 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.61223     ( -0.791805   0.847306 )
Norm@50keV  : 6.33646E-03    ( -0.00300042   0.00291077 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.91 using 59 PHA bins.
# Reduced chi-squared =         0.9459 for     57 degrees of freedom 
# Null hypothesis probability =   5.915890e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.817386 ( -0.385908  0.39045 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.91731e-08 ( -2.83085e-08  2.87431e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    8.236 sec. to    9.236 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.201673     ( 0.248596   2.00451 )
Epeak [keV] : 64.9768      (   )
Norm@50keV  : 4.53931E-02    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.44 using 59 PHA bins.
# Reduced chi-squared =         0.9543 for     56 degrees of freedom 
# Null hypothesis probability =   5.723627e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.751844 ( -0.751844  0.425326 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.56268e-08 ( -5.56268e-08  3.01399e-08 ) ergs/cm2
 
Band function
Time interval is from    8.236 sec. to    9.236 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -5.73793E-02   ( 0.979582   0.979582 )
beta        : -3.05167    ( 2.23756   5.98924 )
Epeak [keV] : 65.1324      ( -65.144 110.512 )
Norm@50keV   : 3.61315E-02    ( -0.0442762   1.20495e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.40 using 59 PHA bins.
# Reduced chi-squared =         0.9709 for     55 degrees of freedom 
# Null hypothesis probability =   5.359405e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.10882 ( 5.89118  -0.33366 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.30224e-08 ( -7.30154e-08  -2.23593e-08 ) ergs/cm2
 
Single BB
 XSPEC: quit
 
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 16.0043  (-5.29346  9.05881)
R^2/D10^2   : 7.86168E-02  (-0.0786166   0.246888)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.163e-09   2.861e-09
25- 50  1.752e-08   1.114e-08
50-150  3.138e-08   2.203e-08
15-150  5.306e-08   3.741e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 191.265       (-187.202      -187.202)
Norm        : 3.34170       (-1.52009     2.6251)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.365e-09   5.405e-09
25- 50  1.601e-08   1.027e-08
50-150  3.463e-08   2.139e-08
15-150  5.901e-08   3.737e-08
Double BB
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 0.408654        (-2.98531      20.9074)
R1^2/D10^2  : 8.44306E+13        (-9.16357e+13      5.35784e+18)
kT2 [keV]   : 16.3906        (-5.37056      9.68811)
R2^2/D10^2  : 7.06824E-02    (-0.0585832   0.146177)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.426e-09   5.650e-09
25- 50  1.563e-08   9.585e-09
50-150  3.256e-08   2.366e-08
15-150  5.662e-08   3.453e-08
Plot creation:
Sun Jun 19 11:51:47 EDT 2022