batgrbproduct analysis for trigger=1040345

batgrbproduct Analysis for Trigger=1040345

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Sun Apr  4 03:20:17 EDT 2021
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/prebascript/trigger1040345/GCN5_download_cron
======================================================================

  Trigger: 01040345      Segment: 000

  BAT Trigger Time: 639131260.736   [s; MET]
      Trigger Stop: 639131261.76   [s; MET]
               UTC: 2021-04-03T08:27:13.956380    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 2.76672918535528   Dec: -32.9992877873351  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.52
     Image Trigger?:     NO
     Rate S/N Ratio:     10.5830052442584  [ if not an image trigger ]
     Image S/N Ratio:    7.52

  Flight Position:   [ source = BAT ]
    RA: 2.76672918535528   Dec: -32.9992877873351  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 2.81344379890025   Dec: -33.0242088937317  [deg; J2000]  
        { 00h 11m 15.2s , -33d 01' 27.2" }
         +/- 2.63787517338489 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.39278952109654 [arcmin] (formal 1-sigma fit error)
    SNR: 7.60898289581901
 
  Angular difference between Flight and Ground position is 2.785695 arcmin
 
  Partial Coding Fraction: 0.8046875    [ including projection effects ]

  Duration
     T90: 168.291999936104 +/- 9.2259809153922
        Measured from: -35.9119998216629
                   to: 132.380000114441     [s; relative to TRIGTIME]
     T50: 99.3199999332428 +/- 10.3071564770824
        Measured from: 2.62400019168854
                   to: 101.944000124931     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.180000066757202     
                   to: 1.1800000667572     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -41.5119999647141     
                   to: 137.180000066757     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     2.257776   2.440147   0.988928   0.052076
           0.084859   0.087471   0.075878   0.066653 [error]
 Peak      0.046555   0.051025   0.032486  -0.000974
           0.006861   0.007123   0.006186   0.004862 [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 7.42e-07 9.33e-07 8.54e-07 1.36e-06 2.99e-06 3.89e-06   erg/cm2
              Error 5.44e-08 4.49e-08 7.21e-08 2.31e-07 1.64e-07 3.06e-07   erg/cm2
Peak flux Power-law 4.02e-01 3.53e-01 2.13e-01 1.93e-01 1.05e+00 1.16e+00   ph/cm2/s
              Error 9.14e-02 5.51e-02 4.85e-02 8.41e-02 1.64e-01 1.85e-01   ph/cm2/s
 
Fluence   Cutoff-PL 6.46e-07 1.04e-06 7.92e-07 2.61e-07 2.67e-06 2.74e-06   erg/cm2
              Error 6.56e-08 6.10e-08 8.94e-08 1.61e-07 1.88e-07 2.50e-07   erg/cm2
Peak flux Cutoff-PL 3.49e-01 4.01e-01 2.21e-01 5.91e-02 1.02e+00 1.03e+00   ph/cm2/s
              Error 1.08e-01 7.48e-02 5.76e-02 -------- 1.67e-01 1.85e-01   ph/cm2/s
 
Fluence        Band 6.39e-07 1.04e-06 7.87e-07 3.55e-07 2.68e-06 2.82e-06   erg/cm2
              Error 6.52e-08 6.11e-08 -------- 3.19e-07 -------- --------   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    2.128    0.097    -      -           1.80e-03 1.09e-04   73.020 57
CPL   0.930    0.515      37.4    4.8      8.51e-03 6.35e-03   52.210 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.731    0.264    -      -           7.82e-03 1.39e-03   60.200 57
CPL   0.601    1.320      55.9  114.4      3.26e-02 1.12e-01   57.150 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: 226.560000 sec.
T50 in the 50-300 keV band: 123.136000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  178.692  -41.512  137.180
T90   168.292  -35.912  132.380
T50    99.320    2.624  101.944
Peak    1.000    0.180    1.180

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
    2.8134 -33.0242 0.0252   20.1 -113.4       3.8800     7.6  TRIG_01040345       
------------------------------------------
 
Foreground time interval of the image:
-41.512 137.180 (delta_t = 178.692 [sec])
Background time interval of the image:
-60.736 -41.512 (delta_t =  19.224 [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  -41.512 sec. to  137.180 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.12764     ( -0.0953426   0.097775 )
Norm@50keV  : 1.79833E-03    ( -0.000109123   0.000108114 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   73.02     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 7.48e-02 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 178.7 sec: 0.286845 ( -0.0142075  0.014232 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.9943e-06 ( -1.62975e-07  1.64463e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -41.512 sec. to  137.180 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.929586     ( -0.545044   0.485349 )
Epeak [keV] : 37.4260      ( -5.30823 4.31087 )
Norm@50keV  : 8.50715E-03    ( -0.00394133   0.00876161 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   52.21     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 6.19e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 178.7 sec: 0.267996 ( -0.015673  0.01574 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.67367e-06 ( -1.839e-07  1.92674e-07 ) ergs/cm2
 
Band function
Time interval is from  -41.512 sec. to  137.180 sec.
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.941903   ( -0.455082   0.511584 )
beta        : -9.36925    ( 9.36925   19.3692 )
Epeak [keV] : 37.3800      ( -3.7167 4.33744 )
Norm@50keV   : 8.37256E-03    ( -0.0038039   0.0122426 )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in 178.7 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.67714e-06 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 10.0259  (-0.52431  0.552834)
R^2/D10^2   : 0.126464  (-0.0241849   0.0299293)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   91.89     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 2.33e-03 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.630e-07   4.074e-08
25- 50  1.156e-06   6.406e-08
50-150  6.076e-07   8.587e-08
15-150  2.226e-06   1.188e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 55.2321       (-7.36128      8.73455)
Norm        : 1.53926       (-0.134182     0.136881)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   54.01     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 5.88e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.812e-07   5.066e-08
25- 50  1.010e-06   5.227e-08
50-150  1.070e-06   1.367e-07
15-150  2.761e-06   1.564e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.49318        (-1.21994      1.62194)
R1^2/D10^2  : 1.52264        (-1.01599      3.261)
kT2 [keV]   : 13.0948        (-1.55854      2.76791)
R2^2/D10^2  : 3.60774E-02    (-0.0219724   0.031021)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   53.31     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 5.39e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.573e-07   2.481e-07
25- 50  1.024e-06   2.320e-07
50-150  8.909e-07   1.955e-07
15-150  2.572e-06   4.959e-07

Peak spectrum fit

Power-law model
Time interval is from    0.180 sec. to    1.180 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.73104     ( -0.255953   0.272118 )
Norm@50keV  : 7.81647E-03    ( -0.00140346   0.00137096 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   60.20     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.61e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 1.04963 ( -0.163586  0.163629 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.22103e-08 ( -1.32463e-08  1.35615e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.180 sec. to    1.180 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.601051     ( -1.53246   1.1079 )
Epeak [keV] : 55.9206      ( -14.3383 214.412 )
Norm@50keV  : 3.25694E-02    ( -0.0325804   0.19216 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   57.15     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 4.32e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 1.01655 ( -0.16738  0.16711 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.65329e-08 ( -1.36258e-08  1.45795e-08 ) ergs/cm2
 
Band function
Time interval is from    0.180 sec. to    1.180 sec.
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.723203   ( -0.888907   1.22595 )
beta        : -8.83233    ( 9.25368   19.2537 )
Epeak [keV] : 58.3793      ( -28.8051 241.15 )
Norm@50keV   : 2.75093E-02    ( -0.027858   16.4314 )
------------------------------------------------------------
 
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]    : 12.2480  (-1.94087  2.36653)
R^2/D10^2   : 0.248147  (-0.118493   0.216524)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   61.60     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.15e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.885e-09   2.143e-09
25- 50  2.541e-08   5.710e-09
50-150  2.323e-08   8.105e-09
15-150  5.653e-08   1.421e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 99.9399       (-36.602      -99.9871)
Norm        : 4.71049       (-0.858106     0.995928)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   58.16     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 4.32e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.231e-08   2.673e-09
25- 50  2.129e-08   4.990e-09
50-150  3.448e-08   2.324e-08
15-150  6.808e-08   2.434e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 3.82356        (-1.98161      24.9733)
R1^2/D10^2  : 8.66183        (-5.55489      535.055)
kT2 [keV]   : 14.9238        (-3.19127      17.1471)
R2^2/D10^2  : 0.107211    (-0.104004   0.142887)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   56.64     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 4.14e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.131e-08   6.060e-09
25- 50  2.178e-08   1.192e-08
50-150  2.994e-08   1.810e-08
15-150  6.303e-08   2.980e-08
Plot creation:
Sun Apr  4 03:23:16 EDT 2021