batgrbproduct analysis for trigger=970886

batgrbproduct Analysis for Trigger=970886

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.47
    Process Start Time (local time): Sun May 10 14:47:32 EDT 2020
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger970886/GCN5_download_cron
======================================================================

  Trigger: 00970886      Segment: 000

  BAT Trigger Time: 610699662.336   [s; MET]
      Trigger Stop: 610699666.432   [s; MET]
               UTC: 2020-05-09T06:47:17.426340    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 116.449929380473   Dec: -4.64135929017309  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    10.2
     Image Trigger?:     NO
     Rate S/N Ratio:     13.1529464379659  [ if not an image trigger ]
     Image S/N Ratio:    10.2

  Flight Position:   [ source = BAT ]
    RA: 116.449929380473   Dec: -4.64135929017309  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 116.412145764794   Dec: -4.63488833468982  [deg; J2000]  
        { 07h 45m 38.9s , -04d 38' 05.6" }
         +/- 1.66362104157675 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.818611800168268 [arcmin] (formal 1-sigma fit error)
    SNR: 14.7003059386857
 
  Angular difference between Flight and Ground position is 2.292707 arcmin
 
  Partial Coding Fraction: 0.3984375    [ including projection effects ]

  Duration
     T90: 828.335999965668 +/- 13.3094474626136
        Measured from: 3.3600001335144
                   to: 831.696000099182     [s; relative to TRIGTIME]
     T50: 368.360000014305 +/- 285.442647976417
        Measured from: 446.076000094414
                   to: 814.436000108719     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 822.692000031471     
                   to: 823.692000031471     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.796000003814697     
                   to: 848.991999983788     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     3.070280   4.146130   3.229660   0.832418
           0.179433   0.186453   0.165921   0.152105 [error]
 Peak      0.064522   0.049708   0.039922   0.012871
           0.006578   0.006927   0.006004   0.005075 [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 1.17e-06 1.94e-06 2.44e-06 6.14e-06 7.26e-06 1.17e-05   erg/cm2
              Error 1.04e-07 1.04e-07 1.64e-07 8.90e-07 3.94e-07 1.01e-06   erg/cm2
Peak flux Power-law 6.74e-01 5.02e-01 2.49e-01 1.76e-01 1.51e+00 1.60e+00   ph/cm2/s
              Error 1.35e-01 6.36e-02 5.26e-02 7.34e-02 1.95e-01 2.02e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.07e-06 2.01e-06 2.52e-06 3.40e-06 7.05e-06 9.00e-06   erg/cm2
              Error 1.28e-07 1.23e-07 1.81e-07 1.70e-06 4.34e-07 1.73e-06   erg/cm2
Peak flux Cutoff-PL 6.87e-01 5.03e-01 2.44e-01 1.67e-01 1.51e+00 1.60e+00   ph/cm2/s
              Error 1.36e-01 4.83e-02 5.29e-02 8.76e-02 -------- 2.03e-01   ph/cm2/s
 
Fluence        Band 1.06e-06 2.01e-06 2.50e-06 4.22e-06 7.04e-06 9.84e-06   erg/cm2
              Error 1.29e-07 -------- -------- -------- 4.32e-07 --------   erg/cm2
Peak flux      Band 2.19e-01 2.91e-01 2.83e-01 4.90e-01 9.55e-01 1.28e+00   ph/cm2/s
              Error 1.44e-01 -------- 8.46e-02 -------- -------- --------   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.666    0.091    -      -           9.22e-04 4.77e-05   41.510 57
CPL   1.225    0.386      90.0   95.9      1.52e-03 6.80e-04   37.300 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.011    0.258    -      -           1.00e-02 1.56e-03   49.730 57
CPL   2.870    0.792     280.9 -106.9      3.98e-03 6.94e-03   48.430 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: 825.408000 sec.
T50 in the 50-300 keV band: 770.304000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  849.788   -0.796  848.992
T90   828.336    3.360  831.696
T50   368.360  446.076  814.436
Peak    1.000  822.692  823.692

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  116.4121  -4.6349 0.0131   46.5 -171.0       2.0704    14.7  TRIG_00970886       
------------------------------------------
 
Foreground time interval of the image:
 -0.796  27.074 (delta_t =  27.870 [sec])
 27.664  37.565 (delta_t =   9.901 [sec])
Background time interval of the image:
-239.336 -56.337 (delta_t = 182.999 [sec])
-55.336  -0.796 (delta_t =  54.540 [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
-0.796000 27.074000
27.664000 287.714000
288.664000 848.992000
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.66623     ( -0.0906676   0.0914622 )
Norm@50keV  : 9.21876E-04    ( -4.77516e-05   4.76315e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.51 using 59 PHA bins.
# Reduced chi-squared =         0.7283 for     57 degrees of freedom 
# Null hypothesis probability =   9.386369e-01
 
Photon flux (15-150 keV)    in 848.2 sec: 0.121026 ( -0.00649802  0.00651658 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.26087e-06 ( -3.93537e-07  3.94805e-07 ) ergs/cm2
 
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-0.796000 27.074000
27.664000 287.714000
288.664000 848.992000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.22525     ( -0.402044   0.369092 )
Epeak [keV] : 89.9970      ( -21.3943 170.383 )
Norm@50keV  : 1.51893E-03    ( -0.00050843   0.000851597 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          37.30 using 59 PHA bins.
# Reduced chi-squared =         0.6661 for     56 degrees of freedom 
# Null hypothesis probability =   9.743357e-01
 
Photon flux (15-150 keV)    in 848.2 sec: 0.117935 ( -0.006946  0.006977 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.05348e-06 ( -4.3455e-07  4.33167e-07 ) ergs/cm2
 
Band function
Multiple GTIs in the spectrum
tstart tstop
-0.796000 27.074000
27.664000 287.714000
288.664000 848.992000
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.19688   ( -0.37325   1.87312 )
beta        : -2.14054    ( 2.14504   0.459223 )
Epeak [keV] : 86.2140      ( -53.1518 159.828 )
Norm@50keV   : 1.57650E-03    ( -0.000552994   0.0162588 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          37.25 using 59 PHA bins.
# Reduced chi-squared =         0.6772 for     55 degrees of freedom 
# Null hypothesis probability =   9.681236e-01
 
Photon flux (15-150 keV)    in 848.2 sec: 0.117781 ( 6.88222  -0.006975 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.03834e-06 ( -7.0324e-06  -4.31912e-07 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 14.4939  (-0.887488  0.948538)
R^2/D10^2   : 1.47440E-02  (-0.00305073   0.00383078)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         112.74 using 59 PHA bins.
# Reduced chi-squared =         1.9779 for     57 degrees of freedom 
# Null hypothesis probability =   1.555819e-05
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.528e-07   5.289e-08
25- 50  2.127e-06   1.306e-07
50-150  2.993e-06   2.833e-07
15-150  5.672e-06   3.448e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 155.733       (-34.8109      45.1075)
Norm        : 0.493459       (-0.0291112     0.0356458)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          37.41 using 59 PHA bins.
# Reduced chi-squared =         0.6562 for     57 degrees of freedom 
# Null hypothesis probability =   9.791661e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.071e-06   8.482e-08
25- 50  1.997e-06   2.311e-07
50-150  4.002e-06   1.254e-06
15-150  7.070e-06   1.362e-06
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.50246        (-1.27834      1.48274)
R1^2/D10^2  : 0.159723        (-0.0791221      0.198987)
kT2 [keV]   : 22.4379        (-3.12174      5.0272)
R2^2/D10^2  : 2.39314E-03    (-0.00131422   0.00198107)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          39.97 using 59 PHA bins.
# Reduced chi-squared =         0.7266 for     55 degrees of freedom 
# Null hypothesis probability =   9.363424e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.034e-06   2.397e-07
25- 50  2.004e-06   3.117e-07
50-150  3.898e-06   7.905e-07
15-150  6.936e-06   1.154e-06

Peak spectrum fit

Power-law model
Time interval is from  822.692 sec. to  823.692 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.01081     ( -0.246697   0.269201 )
Norm@50keV  : 1.00011E-02    ( -0.00160072   0.00152863 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.73 using 59 PHA bins.
# Reduced chi-squared =         0.8725 for     57 degrees of freedom 
# Null hypothesis probability =   7.417565e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.50767 ( -0.194545  0.195078 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.22836e-08 ( -1.35482e-08  1.37095e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  822.692 sec. to  823.692 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.86979     ( -1.21689   0.366615 )
Epeak [keV] : 280.901      ( -65.198 -278.972 )
Norm@50keV  : 3.97902E-03    ( -0.00283229   0.0110537 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.43 using 59 PHA bins.
# Reduced chi-squared =         0.8648 for     56 degrees of freedom 
# Null hypothesis probability =   7.539140e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.51165 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.2148e-08 ( -1.34072e-08  1.3858e-08 ) ergs/cm2
 
Band function
Time interval is from  822.692 sec. to  823.692 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.84192   ( 1.8426   1.8426 )
beta        : -2.01059    ( 2.01073   0.246202 )
Epeak [keV] : 11.8673      ( -11.6329 -11.6329 )
Norm@50keV   : 1.49246E-02    ( -0.00611973   1.5521 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.73 using 59 PHA bins.
# Reduced chi-squared =         0.9042 for     55 degrees of freedom 
# Null hypothesis probability =   6.754759e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.955421 (    ) 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]    : 12.2320  (-2.07474  2.36114)
R^2/D10^2   : 0.312505  (-0.149515   0.311666)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          76.52 using 59 PHA bins.
# Reduced chi-squared =          1.342 for     57 degrees of freedom 
# Null hypothesis probability =   4.327041e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.903e-09   2.615e-09
25- 50  3.187e-08   7.105e-09
50-150  2.904e-08   8.875e-09
15-150  7.081e-08   1.349e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 81.1543       (-28.3457      56.6838)
Norm        : 6.87498       (-1.29366     1.71283)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.18 using 59 PHA bins.
# Reduced chi-squared =         0.9330 for     57 degrees of freedom 
# Null hypothesis probability =   6.190169e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.786e-08   3.205e-09
25- 50  2.949e-08   4.480e-09
50-150  4.203e-08   1.793e-08
15-150  8.939e-08   2.014e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 3.12612        (-0.797721      1.09489)
R1^2/D10^2  : 78.4533        (-62.855      248.89)
kT2 [keV]   : 17.3060        (-3.15985      4.4209)
R2^2/D10^2  : 7.39598E-02    (-0.0427736   0.0854145)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.71 using 59 PHA bins.
# Reduced chi-squared =         0.8130 for     55 degrees of freedom 
# Null hypothesis probability =   8.376906e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.335e-08   1.173e-08
25- 50  2.331e-08   8.223e-09
50-150  4.332e-08   1.701e-08
15-150  8.997e-08   2.669e-08
Plot creation:
Sun May 10 14:52:50 EDT 2020