batgrbproduct analysis for trigger=1161390

batgrbproduct Analysis for Trigger=1161390

Analysis Summary

Notes:

1) No attempt has been made to eliminate the non-significant decimal places.
2) This batgrbproduct analysis is done using the HEASARC data.
3) This batgrbproduct analysis is using the flight position for the mask-weighting calculation.

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Wed Jun 14 15:08:07 EDT 2023
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1161390
======================================================================

  Trigger: 01161390      Segment: 000

  BAT Trigger Time: 701406966.848   [s; MET]
      Trigger Stop: 701406967.872   [s; MET]
               UTC: 2023-03-25T03:15:35.863840    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 296.820236138275   Dec: -46.0941325282463  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    11.62
     Image Trigger?:     NO
     Rate S/N Ratio:     29.086079144498  [ if not an image trigger ]
     Image S/N Ratio:    11.62

  Flight Position:   [ source = BAT ]
    RA: 296.820236138275   Dec: -46.0941325282463  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 296.857024926155   Dec: -46.0707340759418  [deg; J2000]  
        { 19h 47m 25.7s , -46d 04' 14.6" }
         +/- 1.5568128472591 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.558808453447805 [arcmin] (formal 1-sigma fit error)
    SNR: 16.1619940153994
 
  Angular difference between Flight and Ground position is 2.077276 arcmin
 
  Partial Coding Fraction: 0.4882812    [ including projection effects ]

  Duration
     T90: 38.2880001068115 +/- 11.3418334203591
        Measured from: -7.22400009632111
                   to: 31.0640000104904     [s; relative to TRIGTIME]
     T50: 6.04800009727478 +/- 7.18016826971619
        Measured from: -0.168000102043152
                   to: 5.87999999523163     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.0680000782012939     
                   to: 0.931999921798706     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -8.55200004577637     
                   to: 41.7039999961853     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.736410   0.905709   0.570368   0.101465
           0.076035   0.077711   0.067597   0.058154 [error]
 Peak      0.100025   0.146943   0.144738   0.031913
           0.013842   0.015027   0.014572   0.009694 [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 2.45e-07 3.71e-07 4.23e-07 9.20e-07 1.31e-06 1.96e-06   erg/cm2
              Error 3.67e-08 3.64e-08 6.56e-08 2.90e-07 1.52e-07 3.54e-07   erg/cm2
Peak flux Power-law 9.59e-01 1.07e+00 8.62e-01 1.15e+00 3.32e+00 4.04e+00   ph/cm2/s
              Error 1.82e-01 1.28e-01 1.09e-01 2.96e-01 3.62e-01 4.47e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.32e-07 3.90e-07 4.26e-07 4.80e-07 1.27e-06 1.53e-06   erg/cm2
              Error 4.17e-08 4.27e-08 7.00e-08 4.13e-07 1.66e-07 4.64e-07   erg/cm2
Peak flux Cutoff-PL 8.67e-01 1.12e+00 9.13e-01 7.44e-01 3.27e+00 3.64e+00   ph/cm2/s
              Error 2.24e-01 1.46e-01 1.35e-01 4.33e-01 3.69e-01 6.01e-01   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    1.813    0.181    -      -           2.84e-03 3.22e-04   43.720 57
CPL   1.405    0.706      67.0  -23.7      4.72e-03 4.42e-03   42.570 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.319    0.176    -      -           2.77e-02 2.97e-03   56.720 57
CPL   0.861    0.665     136.8  -40.5      4.56e-02 3.90e-02   55.420 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: 1.920000 sec.
T50 in the 50-300 keV band: 0.960000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   50.256   -8.552   41.704
T90    38.288   -7.224   31.064
T50     6.048   -0.168    5.880
Peak    1.000   -0.068    0.932

Click here for the BAT GCN circular template

Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minute to calcaulte

Image

Pre-slew 15.0-350.0 keV image (Event data)

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
  296.8570   -46.0707   0.0119    30.2234   108.6637         1.8526862     16.162 TRIG_01161390                 
 
Foreground time interval of the image:
 -8.552  15.053 (delta_t =  23.605 [sec])
Background time interval of the image:
-239.848  -8.552 (delta_t = 231.296 [sec])

Lightcurves

Notes:

1) The mask-weighted light curves are using the flight position.
2) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
3) For all the mask-weighted lightcurves, the y-axis units are counts/sec/det where a det is 0.4 x 0.4 = 0.16 sq cm.
4) The verticle lines correspond to following: green dotted lines are T50 interval, black dotted lines are T90 interval, blue solid line(s) is a spacecraft slew start time, and orange solid line(s) is a spacecraft slew end time.
5) Time of each bin is in the middle of the bin.

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

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000

8 ms binning

From T100_start-3 s to T100_start+3 s

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000

2 ms binning

From T100_start-1 s to T100_start+1 s

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000

SN=5 or 10 sec. binning (whichever binning is satisfied first)

SN=5 or 10 sec. binning (T < 200 sec)

Quad-rate summed light curves (from T0-300s to T0+1000s)

Spectral Evolution

Spectra

Notes:

1) The fitting includes the systematic errors.
2) When the burst includes telescope slew time periods, the fitting uses an average response file made from multiple 5-s response files through out the slew time plus single time preiod for the non-slew times, and weighted by the total counts in the corresponding time period using addrmf. An average response file is needed becuase a spectral fit using the pre-slew DRM will introduce some errors in both a spectral shape and a normalization if the PHA file contains a lot of the slew/post-slew time interval.
3) For fits to more complicated models (e.g. a power-law over a cutoff power-law), the BAT team has decided to require a chi-square improvement of more than 6 for each extra dof.

Time averaged spectrum fit using the average DRM

Power-law model

Time interval is from   -8.552 sec. to   41.704 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.81321     ( -0.177818   0.184893 )
Norm@50keV  : 2.83835E-03    ( -0.000324843   0.000318725 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   43.72     using 59 bins.
 Reduced chi-squared = 0.767018
# Null hypothesis probability of 9.02e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 50.26 sec: 0.393161 ( -0.038906  0.038932 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.31293e-06 ( -1.51102e-07  1.53401e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from   -8.552 sec. to   41.704 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.40523     ( -0.742023   0.669905 )
Epeak [keV] : 67.0219      ( -19.6458 -67.0203 )
Norm@50keV  : 4.71607E-03    ( -0.00186206   0.00696988 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   42.57     using 59 bins.
 Reduced chi-squared = 0.760179
# Null hypothesis probability of 9.07e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 50.26 sec: 0.386332 ( -0.040362  0.040349 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.26804e-06 ( -1.64793e-07  1.68119e-07 ) ergs/cm2

Band function

Time interval is from   -8.552 sec. to   41.704 sec.
 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       :    (     )
beta        :     (     )
Epeak [keV] :       (   )
Norm@50keV   :     (     )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in  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]    : 11.9122  (-1.52119  1.75556)
R^2/D10^2   : 9.53985E-02  (-0.0378483   0.062849)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   68.63     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 1.39e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.438e-07   2.681e-08
25- 50  4.487e-07   5.328e-08
50-150  3.809e-07   8.559e-08
15-150  9.734e-07   1.312e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 99.6486       (-30.1664      56.9124)
Norm        : 1.73473       (-0.22703     0.27559)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   42.68     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 9.21e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.279e-07   3.237e-08
25- 50  3.938e-07   4.523e-08
50-150  6.368e-07   2.486e-07
15-150  1.258e-06   2.943e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.47987        (-1.53584      1.73568)
R1^2/D10^2  : 1.12069        (-0.710726      3.21345)
kT2 [keV]   : 20.1467        (-4.22171      6.86545)
R2^2/D10^2  : 1.08522E-02    (-0.00734434   0.0117816)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   41.29     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 9.15e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.375e-07   1.142e-07
25- 50  3.715e-07   1.374e-07
50-150  6.514e-07   3.614e-07
15-150  1.260e-06   4.329e-07

Peak spectrum fit

Power-law model

Time interval is from   -0.068 sec. to    0.932 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.31880     ( -0.175747   0.177109 )
Norm@50keV  : 2.77147E-02    ( -0.00297003   0.00296409 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   56.72     using 59 bins.
 Reduced chi-squared = 0.995088
# Null hypothesis probability of 4.85e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 3.31820 ( -0.36172  0.36214 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.72672e-07 ( -3.21914e-08  3.23422e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -0.068 sec. to    0.932 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.861265     ( -0.786155   0.543093 )
Epeak [keV] : 136.821      ( -55.76 -136.82 )
Norm@50keV  : 4.55892E-02    ( -0.0198296   0.0580951 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   55.42     using 59 bins.
 Reduced chi-squared = 0.989643
# Null hypothesis probability of 4.97e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 3.27346 ( -0.36879  0.36841 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.05604e-07 ( -3.64082e-08  3.28578e-08 ) ergs/cm2

Band function

Time interval is from   -0.068 sec. to    0.932 sec.
 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       :    (     )
beta        :     (     )
Epeak [keV] :       (   )
Norm@50keV   :     (     )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in  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]    : 18.0632  (-2.33422  2.71717)
R^2/D10^2   : 0.214701  (-0.0804363   0.126369)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   71.72     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 9.07e-02 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.401e-08   3.136e-09
25- 50  6.496e-08   1.183e-08
50-150  1.540e-07   3.005e-08
15-150  2.330e-07   3.185e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-36.3707      -200)
Norm        : 13.7520       (-1.47809     1.47809)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   60.96     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.35e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.424e-08   6.860e-09
25- 50  6.587e-08   3.609e-08
50-150  1.445e-07   7.889e-08
15-150  2.446e-07   1.028e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.71233        (-3.38497      4.40123)
R1^2/D10^2  : 3.02541        (-2.25096      49.4044)
kT2 [keV]   : 25.7179        (-5.95842      16.161)
R2^2/D10^2  : 5.51137E-02    (-0.0452776   0.0913727)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   56.02     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 4.36e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.716e-08   1.404e-08
25- 50  6.226e-08   2.670e-08
50-150  1.790e-07   7.849e-08
15-150  2.684e-07   1.190e-07

Pre-slew spectrum (Pre-slew PHA with pre-slew DRM)

Power-law model

 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.71895     ( -0.162961   0.167533 )
Norm@50keV  : 5.04480E-03    ( -0.000493471   0.00048643 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   51.78     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 6.71e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 23.6 sec: 0.674504 ( -0.0609588  0.0610712 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.10077e-06 ( -1.12039e-07  1.13227e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.58190     ( -0.662251   0.299204 )
Epeak [keV] : 148.858      ( -89.2582 -148.837 )
Norm@50keV  : 5.93894E-03    ( -0.00271179   0.00684116 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   51.63     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 6.41e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 23.6 sec: 0.669906 ( -0.06414  0.063649 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.08978e-06 ( -1.22812e-07  1.21344e-07 ) ergs/cm2

Band function

 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       :    (     )
beta        :     (     )
Epeak [keV] :       (   )
Norm@50keV   :     (     )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in  sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2

S(25-50 keV) vs. S(50-100 keV) plot

S(25-50 keV)  = 3.71e-07
S(50-100 keV) = 4.23e-07

T90 vs. Hardness ratio plot

T90                                   = 38.2880001068115 sec.
Hardness ratio (energy fluence ratio) = 1.14016

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.2299
Count Ratio (50-100 keV) / (15-25 keV) = 0.774525

Mask shadow pattern

IMX = -1.864270239209484E-01, IMY = -5.519256895322276E-01

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000

Spacecraft aspect plot

Bright source in the pre-burst/pre-slew/post-slew images

Pre-burst image of 15-350 keV band

Time interval of the image:
-239.848000 -8.552000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
285.1672 -24.7972    7.9  46.1  136.8   2.7676   1.5   10.3	HT1900.1-2455                 
334.2822 -49.5677    2.5  10.1   57.0   1.5468   4.6 ------	UNKNOWN                       
357.1847  -5.5316    3.4  38.5 -103.4   3.6562   3.4  372.3	UNKNOWN

Pre-slew background subtracted image of 15-350 keV band

Time interval of the image:
-8.552000 15.052600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
285.0409 -24.8904   32.1  46.2  136.6  -0.1263  -0.4    1.8	HT1900.1-2455                 
296.8571 -46.0707    0.7  30.2  108.7   1.8522  16.2 ------	UNKNOWN                       
 60.7702 -62.7785    2.7  52.3    9.4   0.9134   4.3 ------	UNKNOWN                       
 45.2796 -32.4049    2.1  53.8  -30.8   2.4946   5.6 ------	UNKNOWN                       
 37.1089 -26.2237    2.5  50.7  -42.1   1.7404   4.6 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
82.252590 539.952600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
256.1383 -37.9903    0.0  30.9  108.8  -1.4767  -1.3   11.3	4U 1700-377                   
256.4387 -36.4208   86.0  31.5  111.6  -0.1587  -0.1    0.2	GX 349+2                      
262.9229 -24.8750   98.8  34.4  134.7  -0.1498  -0.1    9.1	GX 1+4                        
264.7041 -44.4638   25.1  22.5  100.8  -0.4799  -0.5    1.9	4U 1735-44                    
268.2528  -1.6269    0.0  51.0  160.4  -3.5154  -0.9   12.5	SW J1753.5-0127               
270.2371 -24.9464    6.7  30.0  144.0   1.6666   1.7    8.4	GX 5-1                        
270.1484 -25.7690    3.9  29.4  142.9   2.9412   3.0    8.5	GRS 1758-258                  
274.0887 -13.9420    5.7  37.4  160.2  -2.5405  -2.0    7.4	GX 17+2                       
275.8460 -30.5232   27.8  22.5  144.7   0.3360   0.4   10.2	H1820-303                     
285.0489 -24.7949    5.9  23.3  170.4  -1.5264  -1.9    7.6	HT1900.1-2455                 
263.0017 -33.9720    4.6  28.3  121.6   2.5121   2.5    8.3	GX 354-0                      
268.3150 -34.6113    2.4  24.4  126.3   4.2967   4.8 ------	UNKNOWN

Plot creation:
Fri Jun 16 09:11:50 EDT 2023