batgrbproduct analysis for trigger=1165354

batgrbproduct Analysis for Trigger=1165354

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 14:59:49 EDT 2023
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1165354
======================================================================

  Trigger: 01165354      Segment: 000

  BAT Trigger Time: 703969706.624   [s; MET]
      Trigger Stop: 703969718.784   [s; MET]
               UTC: 2023-04-23T19:07:55.465280    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 122.604962807057   Dec: -21.9203287405549  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.3
     Image Trigger?:     NO
     Rate S/N Ratio:     8.60232526704263  [ if not an image trigger ]
     Image S/N Ratio:    7.3

  Flight Position:   [ source = BAT ]
    RA: 122.604962807057   Dec: -21.9203287405549  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 122.617613108822   Dec: -21.90101311814  [deg; J2000]  
        { 08h 10m 28.2s , -21d 54' 03.6" }
         +/- 2.31936388783496 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.1251900313376 [arcmin] (formal 1-sigma fit error)
    SNR: 9.14456016139219
 
  Angular difference between Flight and Ground position is 1.356105 arcmin
 
  Partial Coding Fraction: 1.03125    [ including projection effects ]

  Duration
     T90: 23.6039999723434 +/- 4.27154537102887
        Measured from: -0.659999966621399
                   to: 22.944000005722     [s; relative to TRIGTIME]
     T50: 13.5759999752045 +/- 5.71036467937035
        Measured from: 3.89600002765656
                   to: 17.472000002861     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 10.6240000724792     
                   to: 11.6240000724792     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -2.25199997425079     
                   to: 24.4920001029968     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.223083   0.360289   0.195658  -0.002772
           0.041995   0.043384   0.037300   0.032194 [error]
 Peak      0.022458   0.037889   0.011594   0.001708
           0.008410   0.008686   0.007360   0.006693 [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 7.59e-08 1.24e-07 1.54e-07 3.77e-07 4.60e-07 7.33e-07   erg/cm2
              Error 1.69e-08 1.83e-08 3.53e-08 1.77e-07 8.29e-08 2.12e-07   erg/cm2
Peak flux Power-law 2.62e-01 1.95e-01 9.65e-02 6.81e-02 5.86e-01 6.22e-01   ph/cm2/s
              Error 1.10e-01 6.47e-02 5.44e-02 8.16e-02 1.90e-01 2.08e-01   ph/cm2/s
 
Fluence   Cutoff-PL 7.25e-08 1.31e-07 1.55e-07 1.82e-07 4.41e-07 5.40e-07   erg/cm2
              Error 1.88e-08 2.40e-08 3.85e-08 2.61e-07 9.38e-08 2.25e-07   erg/cm2
Peak flux Cutoff-PL 1.92e-01 2.67e-01 8.61e-02 3.35e-03 5.49e-01 5.49e-01   ph/cm2/s
              Error 1.69e-01 1.11e-01 6.60e-02 2.93e-02 1.97e-01 1.98e-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    1.691    0.267    -      -           1.86e-03 3.14e-04   43.530 57
CPL   1.257    1.026      76.7  -11.1      3.24e-03 8.52e-03   43.010 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.015    0.623    -      -           3.88e-03 1.70e-03   57.980 57
CPL  -0.688    1.111      40.5    0.0      1.45e-01 2.29e+04   56.060 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   26.744   -2.252   24.492
T90    23.604   -0.660   22.944
T50    13.576    3.896   17.472
Peak    1.000   10.624   11.624

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
  122.6176   -21.9010   0.0211     4.9926   -62.4655         0.7312292      9.145 TRIG_01165354                 
 
Foreground time interval of the image:
 -2.252  24.492 (delta_t =  26.744 [sec])
Background time interval of the image:
-239.624  -2.252 (delta_t = 237.372 [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

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)

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   -2.252 sec. to   24.492 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.69125     ( -0.260047   0.27396 )
Norm@50keV  : 1.86039E-03    ( -0.000318406   0.000310013 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   43.53     using 59 bins.
 Reduced chi-squared = 0.763684
# Null hypothesis probability of 9.05e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 26.74 sec: 0.246340 ( -0.036356  0.036363 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.6099e-07 ( -8.18656e-08  8.39663e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -2.252 sec. to   24.492 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.25654     ( -1.29018   0.761451 )
Epeak [keV] : 76.7188      ( -54.4419 -76.7188 )
Norm@50keV  : 3.23539E-03    ( -0.00323539   0.0137951 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   43.01     using 59 bins.
 Reduced chi-squared = 0.768036
# Null hypothesis probability of 8.99e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 26.74 sec: 0.242321 ( -0.037623  0.037526 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.41255e-07 ( -9.27966e-08  9.48513e-08 ) ergs/cm2

Band function

Time interval is from   -2.252 sec. to   24.492 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]    : 11.5390  (-1.94576  2.47198)
R^2/D10^2   : 6.95278E-02  (-0.0352786   0.0669079)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   51.66     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 6.75e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.213e-08   1.364e-08
25- 50  1.565e-07   3.560e-08
50-150  1.220e-07   4.040e-08
15-150  3.307e-07   7.387e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 122.150       (-54.1171      -123.017)
Norm        : 1.05263       (-0.179427     0.227803)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   43.01     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 9.15e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.326e-08   2.776e-08
25- 50  1.315e-07   4.853e-08
50-150  2.367e-07   1.493e-07
15-150  4.414e-07   2.100e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.68030        (-2.92344      2.73533)
R1^2/D10^2  : 0.224679        (-0.140252      0.251555)
kT2 [keV]   : 28.4939        (-12.6573      117.237)
R2^2/D10^2  : 1.79348E-03    (-0.00171571   0.0156739)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   42.61     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 8.89e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.835e-08   3.828e-08
25- 50  1.390e-07   7.351e-08
50-150  2.447e-07   1.411e-07
15-150  4.520e-07   2.296e-07

Peak spectrum fit

Power-law model

Time interval is from   10.624 sec. to   11.624 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.01489     ( -0.54831   0.697753 )
Norm@50keV  : 3.87879E-03    ( -0.00175077   0.0016511 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   57.98     using 59 bins.
 Reduced chi-squared = 1.01719
# Null hypothesis probability of 4.39e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 0.585885 ( -0.189457  0.189584 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.58088e-08 ( -1.41856e-08  1.53335e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   10.624 sec. to   11.624 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.688297     ( 0.739872   2.96243 )
Epeak [keV] : 40.4502      ( -40.4248 -40.4248 )
Norm@50keV  : 0.145444    ( -0.174985   45727.6 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   56.06     using 59 bins.
 Reduced chi-squared = 1.00107
# Null hypothesis probability of 4.73e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 0.548718 ( -0.199061  0.19465 ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2

Band function

Time interval is from   10.624 sec. to   11.624 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]    : 10.3348  (-2.62634  3.42031)
R^2/D10^2   : 0.268651  (-0.268651   0.519702)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   55.95     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 5.14e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.905e-09   3.587e-09
25- 50  1.537e-08   9.245e-09
50-150  8.817e-09   6.937e-09
15-150  3.009e-08   1.906e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 60.5133       (-33.5324      -60.4744)
Norm        : 3.13138       (-1.23846     2.0842)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   57.04     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 4.74e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.881e-09   5.060e-09
25- 50  1.203e-08   7.608e-09
50-150  1.378e-08   1.128e-08
15-150  3.369e-08   2.183e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 1.05506        (-1.04464      2.49192)
R1^2/D10^2  : 2.30839E+05        (-290006      -290021)
kT2 [keV]   : 11.1043        (-2.83246      3.99772)
R2^2/D10^2  : 0.192942    (-0.136896   0.153029)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   52.94     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 5.54e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.126e-09   3.323e-09
25- 50  1.425e-08   8.915e-09
50-150  9.999e-09   7.125e-09
15-150  3.038e-08   1.855e-08

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: 1.69125     ( -0.260047   0.27396 )
Norm@50keV  : 1.86039E-03    ( -0.000318406   0.000310013 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   43.53     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 9.05e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 26.74 sec: 0.246330 ( -0.0363541  0.0363605 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.6092e-07 ( -8.18263e-08  8.39935e-08 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.25654     ( -1.29018   0.761454 )
Epeak [keV] : 76.7186      ( -59.8645 -76.7188 )
Norm@50keV  : 3.23539E-03    ( -0.00323539   0.0137951 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   43.01     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 8.99e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 26.74 sec: 0.242284 ( -0.037614  0.03693 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.41397e-07 ( -9.27958e-08  9.49618e-08 ) 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)  = 1.24e-07
S(50-100 keV) = 1.54e-07

T90 vs. Hardness ratio plot

T90                                   = 23.6039999723434 sec.
Hardness ratio (energy fluence ratio) = 1.24194

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.61504
Count Ratio (50-100 keV) / (15-25 keV) = 0.877064

Mask shadow pattern

IMX = 4.038392364169518E-02, IMY = 7.746302932783052E-02

TIME vs. PHA plot around the trigger time

TIME vs. DetID plot around the trigger time

100 us light curve (15-350 keV)

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:
-239.624000 -2.252000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.4070 -40.5572    2.8  17.1  147.7   1.9949   4.1    5.5	Vela X-1                      
170.3692 -60.6447    9.1  46.3  142.4   2.8849   1.3    2.0	Cen X-3                       
161.6209 -23.3903    2.4  31.6   84.7   3.6284   4.7 ------	UNKNOWN                       
152.1359   7.9970    2.5  41.1   30.1   2.5551   4.6 ------	UNKNOWN                       
129.1225  -7.0557    3.4  18.1   -2.7   1.4507   3.4 ------	UNKNOWN                       
 85.0104 -21.4931    2.9  38.5 -103.5   5.7511   3.9 ------	UNKNOWN

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

Time interval of the image:
-2.252000 24.492000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.5361 -40.7035    6.3  17.3  147.6  -0.1606  -1.8    8.9	Vela X-1                      
170.4839 -60.6453    4.0  46.4  142.3   0.8873   2.9    5.1	Cen X-3                       
142.7112  18.9957    2.2  46.6   11.0   0.8653   5.2 ------	UNKNOWN                       
135.8760  -2.2596    2.2  24.3   12.4   0.4567   5.2 ------	UNKNOWN                       
129.0046 -33.2827    2.3   8.5  158.1   0.4140   5.1 ------	UNKNOWN                       
122.6176 -21.9011    1.3   5.0  -62.5   0.7311   9.1 ------	UNKNOWN                       
112.3730  12.8078    2.9  40.4  -32.0   0.5808   4.0 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
84.076600 306.639000
307.376000 549.507900
550.376000 962.464300
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.4393 -40.5494    2.7  21.6  141.7   6.7782   4.2    4.1	Vela X-1                      
156.7231 -21.4300    2.7  31.6   84.6  11.1352   4.3 ------	UNKNOWN                       
141.5280  24.8094    2.3  50.2   11.5   9.2425   5.1 ------	UNKNOWN

Plot creation:
Fri Jun 16 09:08:07 EDT 2023