batgrbproduct analysis for trigger=1142997

batgrbproduct Analysis for Trigger=1142997

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Sat Dec  3 18:57:13 EST 2022
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/prebascript/trigger1142997/GCN5_download_cron
======================================================================

  Trigger: 01142997      Segment: 000

  BAT Trigger Time: 691704400.896   [s; MET]
      Trigger Stop: 691704404.992   [s; MET]
               UTC: 2022-12-02T20:06:10.572640    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 77.0950930217306   Dec: -59.8061378421313  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.44
     Image Trigger?:     NO
     Rate S/N Ratio:     11.6189500386223  [ if not an image trigger ]
     Image S/N Ratio:    7.44

  Flight Position:   [ source = BAT ]
    RA: 77.0950930217306   Dec: -59.8061378421313  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 77.0019149933964   Dec: -59.8358214427098  [deg; J2000]  
        { 05h 08m 00.5s , -59d 50' 09.0" }
         +/- 2.13598900258352 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.16982318428007 [arcmin] (formal 1-sigma fit error)
    SNR: 10.2863819909798
 
  Angular difference between Flight and Ground position is 3.327262 arcmin
 
  Partial Coding Fraction: 0.8515625    [ including projection effects ]

  Duration
     T90: 10.336000084877 +/- 1.21188779375741
        Measured from: 1.2720000743866
                   to: 11.6080001592636     [s; relative to TRIGTIME]
     T50: 5.75999999046326 +/- 2.24151368053652
        Measured from: 2.82400012016296
                   to: 8.58400011062622     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 3.30799996852875     
                   to: 4.30799996852875     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 1.03199994564056     
                   to: 12.4399999380112     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.167286   0.225836   0.128939   0.024783
           0.027444   0.028876   0.024986   0.021882 [error]
 Peak      0.023665   0.043277   0.026660   0.005327
           0.008259   0.008648   0.007622   0.006475 [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 5.00e-08 8.44e-08 1.08e-07 2.79e-07 3.20e-07 5.22e-07   erg/cm2
              Error 1.08e-08 1.23e-08 2.35e-08 1.23e-07 5.60e-08 1.46e-07   erg/cm2
Peak flux Power-law 2.22e-01 2.37e-01 1.80e-01 2.22e-01 7.24e-01 8.62e-01   ph/cm2/s
              Error 9.82e-02 6.63e-02 5.89e-02 1.51e-01 1.90e-01 2.33e-01   ph/cm2/s
 
Fluence   Cutoff-PL 4.61e-08 9.34e-08 1.08e-07 8.18e-08 2.96e-07 3.30e-07   erg/cm2
              Error 1.22e-08 1.71e-08 2.73e-08 2.23e-07 6.24e-08 1.83e-07   erg/cm2
Peak flux Cutoff-PL 2.08e-01 2.49e-01 1.86e-01 1.33e-01 7.13e-01 7.75e-01   ph/cm2/s
              Error 1.12e-01 8.13e-02 6.58e-02 1.97e-01 1.95e-01 2.42e-01   ph/cm2/s
 
Fluence        Band 4.47e-08 9.67e-08 1.02e-07 1.74e-07 3.02e-07 4.20e-07   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    1.640    0.251    -      -           3.01e-03 4.89e-04   33.720 57
CPL   0.832    1.127      64.2  -23.5      8.47e-03 2.39e-02   31.870 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.398    0.453    -      -           5.95e-03 1.58e-03   58.930 57
CPL   0.974    1.963     117.7    0.0      9.90e-03 9.18e-02   58.770 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: 0.000000 sec.
T50 in the 50-300 keV band: 0.000000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   11.408    1.032   12.440
T90    10.336    1.272   11.608
T50     5.760    2.824    8.584
Peak    1.000    3.308    4.308

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   77.0019 -59.8358 0.0188   14.1  -73.7       0.5373    10.3  TRIG_01142997       
------------------------------------------
 
Foreground time interval of the image:
  1.032  12.440 (delta_t =  11.408 [sec])
Background time interval of the image:
-239.896   1.032 (delta_t = 240.928 [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    1.032 sec. to   12.440 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.64025     ( -0.245572   0.256027 )
Norm@50keV  : 3.01100E-03    ( -0.000494336   0.000484295 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          33.72 using 59 PHA bins.
# Reduced chi-squared =         0.5916 for     57 degrees of freedom 
# Null hypothesis probability =   9.940022e-01
 
Photon flux (15-150 keV)    in 11.41 sec: 0.391907 ( -0.0569933  0.0570042 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.19838e-07 ( -5.53134e-08  5.67009e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    1.032 sec. to   12.440 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.831808     ( -1.33649   0.917868 )
Epeak [keV] : 64.2098      ( -17.265 -64.2098 )
Norm@50keV  : 8.47358E-03    ( -0.00847358   0.0394179 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          31.87 using 59 PHA bins.
# Reduced chi-squared =         0.5691 for     56 degrees of freedom 
# Null hypothesis probability =   9.961078e-01
 
Photon flux (15-150 keV)    in 11.41 sec: 0.381374 ( -0.058485  0.058485 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.95748e-07 ( -6.07708e-08  6.3985e-08 ) ergs/cm2
 
Band function
Time interval is from    1.032 sec. to   12.440 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 6.75043E-02   ( -2.37397   -0.708399 )
beta        : -2.06941    ( 1.98637   0.477531 )
Epeak [keV] : 44.3787      ( -38.4185 122.498 )
Norm@50keV   : 3.34117E-02    ( -0.0321321   85.5819 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          31.56 using 59 PHA bins.
# Reduced chi-squared =         0.5738 for     55 degrees of freedom 
# Null hypothesis probability =   9.953373e-01
 
Photon flux (15-150 keV)    in 11.41 sec: 0.384028 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.01529e-07 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 12.0011  (-1.94005  2.41897)
R^2/D10^2   : 9.83697E-02  (-0.0477872   0.0878854)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          38.56 using 59 PHA bins.
# Reduced chi-squared =         0.6765 for     57 degrees of freedom 
# Null hypothesis probability =   9.709102e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.419e-08   9.236e-09
25- 50  1.076e-07   2.218e-08
50-150  9.320e-08   3.247e-08
15-150  2.350e-07   4.786e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 140.643       (-64.014      -138.835)
Norm        : 1.64295       (-0.256148     0.339117)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.839e-08   2.715e-08
25- 50  8.884e-08   4.877e-08
50-150  1.706e-07   1.055e-07
15-150  3.079e-07   1.771e-07
Double BB
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.72935        (-3.58205      3.27179)
R1^2/D10^2  : 0.327152        (-0.211615      1.94877)
kT2 [keV]   : 24.8240        (-16.2586      110.96)
R2^2/D10^2  : 4.62134E-03    (-0.00456391   0.0404295)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.493e-08   2.593e-08
25- 50  9.670e-08   5.075e-08
50-150  1.616e-07   9.037e-08
15-150  3.033e-07   1.579e-07

Peak spectrum fit

Power-law model
Time interval is from    3.308 sec. to    4.308 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.39838     ( -0.452324   0.453948 )
Norm@50keV  : 5.94654E-03    ( -0.00158717   0.00156862 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.93 using 59 PHA bins.
# Reduced chi-squared =          1.034 for     57 degrees of freedom 
# Null hypothesis probability =   4.046070e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.723913 ( -0.189651  0.190015 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.74778e-08 ( -1.67907e-08  1.72633e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    3.308 sec. to    4.308 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.974167     ( -2.46811   1.45874 )
Epeak [keV] : 117.733      ( -117.75 -117.75 )
Norm@50keV  : 9.89596E-03    ( -0.00547203   0.178162 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.77 using 59 PHA bins.
# Reduced chi-squared =          1.049 for     56 degrees of freedom 
# Null hypothesis probability =   3.745221e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.713095 ( -0.195612  0.194617 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.54598e-08 ( -1.87754e-08  1.87622e-08 ) ergs/cm2
 
Band function
Time interval is from    3.308 sec. to    4.308 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.376490   ( 0.330604   0.330604 )
beta        : -1.63712    ( 1.64765   0.66413 )
Epeak [keV] : 61.8656      ( -58.7269 182.711 )
Norm@50keV   : 2.36941E-02    ( -0.0293983   391.601 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.54 using 59 PHA bins.
# Reduced chi-squared =          1.064 for     55 degrees of freedom 
# Null hypothesis probability =   3.469149e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Single BB
 XSPEC: quit
 
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 14.9432  (-4.40966  6.65763)
R^2/D10^2   : 8.56583E-02  (-0.0615589   0.20163)
(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  4.007e-09   2.429e-09
25- 50  1.587e-08   8.920e-09
50-150  2.407e-08   1.555e-08
15-150  4.394e-08   2.453e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.362       (-119.004      -199.363)
Norm        : 2.98257       (-0.772722     0.773675)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.427e-09   4.477e-09
25- 50  1.429e-08   8.585e-09
50-150  3.133e-08   1.877e-08
15-150  5.305e-08   3.239e-08
Double BB
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 9.09339        (-7.33967      7.0435)
R1^2/D10^2  : 0.341434        (-0.160027      345.92)
kT2 [keV]   : 37.5045        (-35.7943      -37.5045)
R2^2/D10^2  : 2.74242E-03    (-0.00265656   0.0981352)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.047e-09   3.678e-09
25- 50  1.542e-08   9.200e-09
50-150  3.538e-08   2.003e-08
15-150  5.685e-08   2.950e-08
Plot creation:
Sat Dec  3 19:00:34 EST 2022