batgrbproduct analysis for trigger=846088

batgrbproduct Analysis for Trigger=846088

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Thu Jul  5 07:32:25 EDT 2018
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger846088/GCN5_download_cron
======================================================================

  Trigger: 00846088      Segment: 000

  BAT Trigger Time: 552375424.064   [s; MET]
      Trigger Stop: 552375425.088   [s; MET]
               UTC: 2018-07-04T05:36:42.855940    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 32.6378994196206   Dec: 69.9477861437904  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.74
     Image Trigger?:     NO
     Rate S/N Ratio:     34.8711915483254  [ if not an image trigger ]
     Image S/N Ratio:    7.74

  Flight Position:   [ source = BAT ]
    RA: 32.6378994196206   Dec: 69.9477861437904  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 32.6046668053229   Dec: 69.9652543141675  [deg; J2000]  
        { 02h 10m 25.1s , +69d 57' 54.9" }
         +/- 1.32637391178373 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.446147074131368 [arcmin] (formal 1-sigma fit error)
    SNR: 20.3180150758454
 
  Angular difference between Flight and Ground position is 1.251208 arcmin
 
  Partial Coding Fraction: 0.07421875    [ including projection effects ]

  Duration
     T90: 19.6560000181198 +/- 1.40470652898984
        Measured from: -17.135999917984
                   to: 2.5200001001358     [s; relative to TRIGTIME]
     T50: 14.5839999914169 +/- 0.811874458929508
        Measured from: -14.1719999313354
                   to: 0.412000060081482     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.0440000295639038     
                   to: 1.0440000295639     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -17.8960000276566     
                   to: 4.23599994182587     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.272124   2.400420   2.916254   1.374494
           0.132978   0.151890   0.147119   0.121888 [error]
 Peak      0.125747   0.341133   0.460442   0.155316
           0.031547   0.039427   0.044608   0.036330 [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 6.03e-07 1.31e-06 2.25e-06 8.87e-06 6.15e-06 1.30e-05   erg/cm2
              Error 7.44e-08 9.81e-08 1.41e-07 1.25e-06 3.67e-07 1.31e-06   erg/cm2
Peak flux Power-law 2.33e+00 2.97e+00 2.75e+00 4.48e+00 9.58e+00 1.25e+01   ph/cm2/s
              Error 5.24e-01 4.24e-01 3.38e-01 1.10e+00 1.17e+00 1.50e+00   ph/cm2/s
 
Fluence   Cutoff-PL 5.45e-07 1.33e-06 2.35e-06 6.04e-06 6.12e-06 1.03e-05   erg/cm2
              Error 9.80e-08 1.05e-07 1.88e-07 2.66e-06 3.74e-07 2.65e-06   erg/cm2
Peak flux Cutoff-PL 1.45e+00 3.05e+00 3.37e+00 1.93e+00 9.14e+00 9.80e+00   ph/cm2/s
              Error 6.51e-01 4.98e-01 5.14e-01 1.01e+00 1.19e+00 1.58e+00   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   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    1.224    0.101    -      -           2.76e-02 1.66e-03   76.340 57
CPL   0.868    0.425     194.2  -59.1      3.90e-02 1.64e-02   74.230 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.108    0.182    -      -           8.25e-02 9.68e-03   68.860 57
CPL  -0.382    1.067     100.5   41.4      3.32e-01 4.01e-01   60.610 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: 21.632000 sec.
T50 in the 50-300 keV band: 15.552000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   22.132  -17.896    4.236
T90    19.656  -17.136    2.520
T50    14.584  -14.172    0.412
Peak    1.000    0.044    1.044

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   32.6047 +69.9653 0.0095   57.7  -18.1       8.3688    20.3  TRIG_00846088       
------------------------------------------
 
Foreground time interval of the image:
-17.896   4.236 (delta_t =  22.132 [sec])
Background time interval of the image:
-239.064 -17.896 (delta_t = 221.168 [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  -17.896 sec. to    4.236 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.22423     ( -0.101622   0.10026 )
Norm@50keV  : 2.75994E-02    ( -0.00166649   0.00166048 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          76.34 using 59 PHA bins.
# Reduced chi-squared =          1.339 for     57 degrees of freedom 
# Null hypothesis probability =   4.453534e-02
 
Photon flux (15-150 keV)    in 22.13 sec: 3.25111 ( -0.213211  0.214183 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.15499e-06 ( -3.67265e-07  3.67462e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -17.896 sec. to    4.236 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.868314     ( -0.45904   0.390483 )
Epeak [keV] : 194.158      ( -75.9241 -194.158 )
Norm@50keV  : 3.89873E-02    ( -0.0119992   0.0208004 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          74.23 using 59 PHA bins.
# Reduced chi-squared =          1.326 for     56 degrees of freedom 
# Null hypothesis probability =   5.191744e-02
 
Photon flux (15-150 keV)    in 22.13 sec: 3.19486 ( -0.22195  0.22317 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.11757e-06 ( -3.74484e-07  3.73267e-07 ) ergs/cm2
 
Band function
Time interval is from  -17.896 sec. to    4.236 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.777141   ( 0.777903   0.777903 )
beta        : -1.48968    ( 1.47414   0.293656 )
Epeak [keV] : 158.036      ( -157.735 808.533 )
Norm@50keV   : 4.33146E-02    ( -0.0141917   0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          74.07 using 59 PHA bins.
# Reduced chi-squared =          1.347 for     55 degrees of freedom 
# Null hypothesis probability =   4.416690e-02
 
Photon flux (15-150 keV)    in 22.13 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]    : 21.3197  (  )
R^2/D10^2   : 0.122675  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         118.22 using 59 PHA bins.
# Reduced chi-squared =         2.0740 for     57 degrees of freedom 
# Null hypothesis probability =   3.566134e-06
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.316e-07   2.775e-08
25- 50  1.202e-06   1.153e-07
50-150  4.075e-06   3.552e-07
15-150  5.509e-06   3.707e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-9.36952      -200)
Norm        : 14.1298       (-0.8434     0.8434)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         110.82 using 59 PHA bins.
# Reduced chi-squared =         1.9442 for     57 degrees of freedom 
# Null hypothesis probability =   2.572722e-05
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.790e-07   5.189e-08
25- 50  1.498e-06   1.031e-07
50-150  3.286e-06   4.503e-07
15-150  5.564e-06   4.072e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.88104        (-1.87552      3.50391)
R1^2/D10^2  : 2.61260        (-1.89603      6.2522)
kT2 [keV]   : 28.1980        (-3.77018      9.24907)
R2^2/D10^2  : 4.23980E-02    (-0.0272845   0.0290048)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          77.13 using 59 PHA bins.
# Reduced chi-squared =          1.402 for     55 degrees of freedom 
# Null hypothesis probability =   2.612382e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.530e-07   2.454e-07
25- 50  1.300e-06   3.339e-07
50-150  4.266e-06   7.259e-07
15-150  6.119e-06   9.793e-07

Peak spectrum fit

Power-law model
Time interval is from    0.044 sec. to    1.044 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.10818     ( -0.182481   0.181336 )
Norm@50keV  : 8.24875E-02    ( -0.00969931   0.00967008 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.86 using 59 PHA bins.
# Reduced chi-squared =          1.208 for     57 degrees of freedom 
# Null hypothesis probability =   1.349467e-01
 
Photon flux (15-150 keV)    in 1 sec: 9.57578 ( -1.16473  1.16941 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.60173e-07 ( -1.04046e-07  1.04244e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.044 sec. to    1.044 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.381798     ( -1.19853   0.934515 )
Epeak [keV] : 100.497      ( -19.7227 63.0187 )
Norm@50keV  : 0.332247    ( -0.190136   0.612077 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.61 using 59 PHA bins.
# Reduced chi-squared =          1.082 for     56 degrees of freedom 
# Null hypothesis probability =   3.130394e-01
 
Photon flux (15-150 keV)    in 1 sec: 9.14378 ( -1.1805  1.19052 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.57175e-07 ( -1.08391e-07  1.07872e-07 ) ergs/cm2
 
Band function
Time interval is from    0.044 sec. to    1.044 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.381747   ( -0.577923   1.77478 )
beta        : -10.0000    ( 10   20 )
Epeak [keV] : 100.475      ( -19.704 63.0319 )
Norm@50keV   : 0.332324    ( -0.190168   0.612879 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.62 using 59 PHA bins.
# Reduced chi-squared =          1.102 for     55 degrees of freedom 
# Null hypothesis probability =   2.805279e-01
 
Photon flux (15-150 keV)    in 1 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]    : 22.0991  (-2.50862  2.95355)
R^2/D10^2   : 0.358870  (-0.1215   0.172705)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.47 using 59 PHA bins.
# Reduced chi-squared =          1.096 for     57 degrees of freedom 
# Null hypothesis probability =   2.882975e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.237e-08   7.610e-09
25- 50  1.716e-07   2.755e-08
50-150  6.262e-07   1.109e-07
15-150  8.302e-07   1.234e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-24.7898      -200)
Norm        : 40.1668       (-4.82426     4.82426)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          83.91 using 59 PHA bins.
# Reduced chi-squared =          1.472 for     57 degrees of freedom 
# Null hypothesis probability =   1.171218e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.000e-07   5.640e-08
25- 50  1.925e-07   1.071e-07
50-150  4.221e-07   2.351e-07
15-150  7.146e-07   3.942e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 3.71197        (-3.71149      10.1915)
R1^2/D10^2  : 55.8672        (-55.4058      -55.8678)
kT2 [keV]   : 23.5920        (-3.05206      5.78112)
R2^2/D10^2  : 0.279555    (-0.175593   0.103008)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.55 using 59 PHA bins.
# Reduced chi-squared =          1.065 for     55 degrees of freedom 
# Null hypothesis probability =   3.465309e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.281e-08   2.745e-08
25- 50  1.634e-07   4.037e-08
50-150  6.363e-07   1.303e-07
15-150  8.625e-07   1.698e-07
Plot creation:
Thu Jul  5 07:35:37 EDT 2018