batgrbproduct analysis for trigger=1242223

batgrbproduct Analysis for Trigger=1242223

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): Sat Oct 19 15:10:44 EDT 2024
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1242223
======================================================================

  Trigger: 01242223      Segment: 000

  BAT Trigger Time: 742447666.624   [s; MET]
      Trigger Stop: 742447674.816   [s; MET]
               UTC: 2024-07-12T03:27:12.831520    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 122.368929948927   Dec: -37.0767268156002  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.11
     Image Trigger?:     NO
     Rate S/N Ratio:     12.6095202129185  [ if not an image trigger ]
     Image S/N Ratio:    7.11

  Flight Position:   [ source = BAT ]
    RA: 122.368929948927   Dec: -37.0767268156002  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 122.37956792607   Dec: -37.097278920141  [deg; J2000]  
        { 08h 09m 31.1s , -37d 05' 50.2" }
         +/- 2.48858899462288 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.43358141336616 [arcmin] (formal 1-sigma fit error)
    SNR: 8.26934260453583
 
  Angular difference between Flight and Ground position is 1.334111 arcmin
 
  Partial Coding Fraction: 0.9375    [ including projection effects ]

  Duration
     T90: 12.7799999713898 +/- 2.71105891575919
        Measured from: -0.579999923706055
                   to: 12.2000000476837     [s; relative to TRIGTIME]
     T50: 6.73199987411499 +/- 3.54843072359151
        Measured from: 1.39200007915497
                   to: 8.12399995326996     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 1.24000000953674     
                   to: 2.24000000953674     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -1.08799993991852     
                   to: 12.4000000953674     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.081796   0.138233   0.133574   0.010123
           0.022119   0.023154   0.020141   0.017350 [error]
 Peak      0.011047   0.023502   0.025209   0.002494
           0.006073   0.006486   0.005626   0.004758 [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 2.79e-08 5.85e-08 9.56e-08 3.53e-07 2.64e-07 5.36e-07   erg/cm2
              Error 8.21e-09 1.05e-08 1.91e-08 1.56e-07 4.80e-08 1.69e-07   erg/cm2
Peak flux Power-law 1.41e-01 1.58e-01 1.27e-01 1.70e-01 4.88e-01 5.96e-01   ph/cm2/s
              Error 7.16e-02 5.15e-02 4.38e-02 1.20e-01 1.46e-01 1.80e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.47e-08 6.15e-08 1.01e-07 1.66e-07 2.55e-07 3.53e-07   erg/cm2
              Error 1.00e-08 1.20e-08 2.21e-08 2.30e-07 5.06e-08 1.87e-07   erg/cm2
Peak flux Cutoff-PL 1.01e-01 1.72e-01 1.47e-01 6.06e-02 4.62e-01 4.80e-01   ph/cm2/s
              Error 8.84e-02 6.39e-02 5.65e-02 1.07e-01 1.54e-01 1.95e-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    1.290    0.281    -      -           1.98e-03 3.23e-04   51.450 57
CPL   0.698    1.075     118.3  -34.0      3.78e-03 6.54e-03   50.540 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.315    0.491    -      -           4.08e-03 1.19e-03   64.060 57
CPL  -0.070    2.713      82.0  -12.1      1.78e-02 2.80e-01   62.910 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: 8.384000 sec.
T50 in the 50-300 keV band: 2.688000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   13.488   -1.088   12.400
T90    12.780   -0.580   12.200
T50     6.732    1.392    8.124
Peak    1.000    1.240    2.240

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
  122.3796   -37.0973   0.0232    21.3699    -3.0989         0.3581363      8.269 TRIG_01242223                 
 
Foreground time interval of the image:
 -1.088  12.400 (delta_t =  13.488 [sec])
Background time interval of the image:
-239.624  -1.088 (delta_t = 238.536 [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 8.192000

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 8.192000

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 8.192000

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   -1.088 sec. to   12.400 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.28988     ( -0.28219   0.278839 )
Norm@50keV  : 1.97766E-03    ( -0.00032393   0.000323062 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   51.45     using 59 bins.
 Reduced chi-squared = 0.902632
# Null hypothesis probability of 6.82e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 13.49 sec: 0.235509 ( -0.039312  0.039413 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.64322e-07 ( -4.77549e-08  4.8338e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -1.088 sec. to   12.400 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.697536     ( -1.34203   0.807222 )
Epeak [keV] : 118.266      ( -50.2251 -118.286 )
Norm@50keV  : 3.77723E-03    ( -0.00205244   0.0110186 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   50.54     using 59 bins.
 Reduced chi-squared = 0.9025
# Null hypothesis probability of 6.81e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 13.49 sec: 0.229636 ( -0.041074  0.04085 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.55565e-07 ( -5.02782e-08  5.0851e-08 ) ergs/cm2

Band function

Time interval is from   -1.088 sec. to   12.400 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]    : 18.6200  (-3.46059  4.44222)
R^2/D10^2   : 1.35807E-02  (-0.00694063   0.0135461)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   56.03     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 5.11e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.257e-08   4.322e-09
25- 50  5.962e-08   1.860e-08
50-150  1.513e-07   4.713e-08
15-150  2.235e-07   5.821e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-65.1529      -200)
Norm        : 0.976241       (-0.160628     0.160628)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   53.36     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 6.13e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.280e-08   1.906e-08
25- 50  6.311e-08   3.644e-08
50-150  1.384e-07   7.851e-08
15-150  2.343e-07   1.317e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.13352        (-2.79106      5.18701)
R1^2/D10^2  : 0.542682        (-0.495258      2.87175)
kT2 [keV]   : 23.2406        (-5.48978      12.4474)
R2^2/D10^2  : 5.86358E-03    (-0.00459784   0.00921619)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   49.30     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 6.91e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.746e-08   1.611e-08
25- 50  5.580e-08   2.774e-08
50-150  1.702e-07   9.497e-08
15-150  2.534e-07   1.350e-07

Peak spectrum fit

Power-law model

Time interval is from    1.240 sec. to    2.240 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.31522     ( -0.490744   0.491387 )
Norm@50keV  : 4.08154E-03    ( -0.00119553   0.00119343 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   64.06     using 59 bins.
 Reduced chi-squared = 1.12386
# Null hypothesis probability of 2.43e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 0.488336 ( -0.145307  0.145971 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.01902e-08 ( -1.28054e-08  1.30562e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    1.240 sec. to    2.240 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -6.95244E-02     ( -3.67666   1.74954 )
Epeak [keV] : 82.0296      ( -57.9045 -82.0141 )
Norm@50keV  : 1.78101E-02    ( -0.0178256   0.541714 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   62.91     using 59 bins.
 Reduced chi-squared = 1.12339
# Null hypothesis probability of 2.45e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 0.462225 ( -0.154229  0.152935 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.79193e-08 ( -1.27952e-08  1.35632e-08 ) ergs/cm2

Band function

Time interval is from    1.240 sec. to    2.240 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]    : 18.2027  (-4.90578  7.26246)
R^2/D10^2   : 3.15757E-02  (-0.0315757   0.0598102)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   63.42     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 2.60e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.087e-09   1.310e-09
25- 50  9.733e-09   5.975e-09
50-150  2.348e-08   1.524e-08
15-150  3.530e-08   2.110e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.362       (-112.895      -199.363)
Norm        : 2.03251       (-0.595557     0.595549)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   64.38     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 2.34e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.061e-09   3.210e-09
25- 50  9.736e-09   6.165e-09
50-150  2.135e-08   1.285e-08
15-150  3.615e-08   2.245e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 1.23867        (-1.58095      5.00633)
R1^2/D10^2  : 2.14009E+04        (-20258.1      -20258.1)
kT2 [keV]   : 19.1368        (-5.17388      8.01275)
R2^2/D10^2  : 2.60021E-02    (-0.0259559   0.0480156)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   61.07     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 2.67e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.364e-09   1.405e-09
25- 50  8.946e-09   5.240e-09
50-150  2.434e-08   1.566e-08
15-150  3.665e-08   2.168e-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: 1.28988     ( -0.28219   0.278839 )
Norm@50keV  : 1.97766E-03    ( -0.00032393   0.000323062 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   51.45     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 6.82e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 13.49 sec: 0.235506 ( -0.0393109  0.0394117 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.64291e-07 ( -4.77448e-08  4.8367e-08 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.697515     ( -1.34204   0.807212 )
Epeak [keV] : 118.259      ( -50.2256 -118.286 )
Norm@50keV  : 3.77738E-03    ( -0.00205245   0.0110185 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   50.54     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 6.81e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 13.49 sec: 0.229620 ( -0.041062  0.040841 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.55677e-07 ( -5.02786e-08  5.09261e-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)  = 5.85e-08
S(50-100 keV) = 9.56e-08

T90 vs. Hardness ratio plot

T90                                   = 12.7799999713898 sec.
Hardness ratio (energy fluence ratio) = 1.63419

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.68997
Count Ratio (50-100 keV) / (15-25 keV) = 1.63301

Mask shadow pattern

IMX = 3.907181005366667E-01, IMY = 2.115322218977296E-02

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 8.192000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 8.192000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 8.192000

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 -1.088000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.5732 -40.6120    2.9  32.0    2.1   1.6567   4.0    4.0	Vela X-1                      
 76.3940 -59.5473    2.7  31.5   84.7   2.6055   4.2 ------	UNKNOWN                       
108.0142  -1.0897    2.4  31.8  -95.2   2.4393   4.8 ------	UNKNOWN                       
108.4480   8.5142    2.9  41.2  -98.9   5.6319   4.0 ------	UNKNOWN

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

Time interval of the image:
-1.088000 12.400000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.4747 -40.4256    4.1  31.9    1.7   0.1389   2.8    8.1	Vela X-1                      
166.0850 -51.1320    3.2  53.2   17.5   0.6964   3.6 ------	UNKNOWN                       
122.3796 -37.0973    1.4  21.4   -3.1   0.3581   8.3 ------	UNKNOWN                       
 65.2175   2.1738    3.1  45.4 -164.0   0.2585   3.8 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
119.076600 962.475200
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.6246 -40.5388    2.2  10.9   34.0   4.8211   5.2    4.5	Vela X-1                      
170.3188 -60.6256   63.2  38.0   65.2   0.5293   0.2    0.2	Cen X-3                       
 63.5016 -68.9900    2.6  44.7  127.3  25.7424   4.5 ------	UNKNOWN                       
144.3597 -50.3445    2.9  20.6   58.5   4.5779   4.0 ------	UNKNOWN                       
170.2531 -13.2173    2.9  48.8   -4.9   6.4089   4.0 ------	UNKNOWN

Plot creation:
Sat Oct 19 18:23:47 EDT 2024