batgrbproduct analysis for trigger=1202522

batgrbproduct Analysis for Trigger=1202522

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): Tue Dec 26 15:21:53 EST 2023
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1202522
======================================================================

  Trigger: 01202522      Segment: 000

  BAT Trigger Time: 724326477.824   [s; MET]
      Trigger Stop: 724326479.872   [s; MET]
               UTC: 2023-12-15T09:47:25.273080    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 9.75000608289667   Dec: 57.6422967295133  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.55
     Image Trigger?:     NO
     Rate S/N Ratio:     98.4428768372806  [ if not an image trigger ]
     Image S/N Ratio:    9.55

  Flight Position:   [ source = BAT ]
    RA: 9.75000608289667   Dec: 57.6422967295133  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 9.72981974483865   Dec: 57.6337025644225  [deg; J2000]  
        { 00h 38m 55.2s , +57d 38' 01.3" }
         +/- 1.29658815140801 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.564341848036143 [arcmin] (formal 1-sigma fit error)
    SNR: 20.988074460736
 
  Angular difference between Flight and Ground position is 0.828368 arcmin
 
  Partial Coding Fraction: 0.06542969    [ including projection effects ]

  Duration
     T90: 22.0960000753403 +/- 3.47252532735092
        Measured from: -5.79200005531311
                   to: 16.3040000200272     [s; relative to TRIGTIME]
     T50: 7.04000008106232 +/- 1.43260322573292
        Measured from: -1.79200005531311
                   to: 5.24800002574921     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.179999947547913     
                   to: 1.17999994754791     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -7.03999996185303     
                   to: 21.1200000047684     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     2.055800   3.826335   4.786562   2.606511
           0.185494   0.213855   0.209811   0.187671 [error]
 Peak      0.099387   0.365054   0.570215   0.242444
           0.039289   0.050311   0.056179   0.047175 [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 8.00e-07 1.96e-06 3.83e-06 1.86e-05 1.04e-05 2.52e-05   erg/cm2
              Error 9.35e-08 1.38e-07 1.97e-07 2.23e-06 5.25e-07 2.27e-06   erg/cm2
Peak flux Power-law 1.26e-04 1.69e-03 4.31e-02 3.63e+00 1.03e-01 2.38e+00   ph/cm2/s
              Error -------- -------- 5.30e-02 2.91e+00 -------- 2.97e+00   ph/cm2/s
 
Fluence   Cutoff-PL 7.97e-07 2.03e-06 3.86e-06 1.84e-05 1.04e-05 2.50e-05   erg/cm2
              Error 9.69e-08 1.29e-07 2.34e-07 3.66e-06 5.16e-07 3.60e-06   erg/cm2
Peak flux Cutoff-PL 2.06e-05 2.21e-04 1.20e-02 1.60e+00 2.36e-02 1.65e+00   ph/cm2/s
              Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+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    1.031    0.091    -      -           3.45e-02 1.87e-03   55.810 57
CPL   1.025    0.237    10000.0    0.0      3.47e-02 1.80e-03   55.810 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.920    0.215    -      -           8.64e-02 1.20e-02   66.970 57
CPL  -0.220    1.121     124.5  177.6      2.45e-01 3.02e-01   62.970 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: 22.208000 sec.
T50 in the 50-300 keV band: 5.568000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   28.160   -7.040   21.120
T90    22.096   -5.792   16.304
T50     7.040   -1.792    5.248
Peak    1.000    0.180    1.180

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
    9.7298    57.6337   0.0091    57.1930  -174.1937        14.3297439     20.988 TRIG_01202522                 
 
Foreground time interval of the image:
 -7.040  21.120 (delta_t =  28.160 [sec])
Background time interval of the image:
-239.824  -7.040 (delta_t = 232.784 [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 2.048000

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 2.048000

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 2.048000

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   -7.040 sec. to   21.120 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.03128     ( -0.0917248   0.0898922 )
Norm@50keV  : 3.44510E-02    ( -0.00187769   0.0018622 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   55.81     using 59 bins.
 Reduced chi-squared = 0.979123
# Null hypothesis probability of 5.20e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 28.16 sec: 3.97370 ( -0.2258  0.22679 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.03777e-05 ( -5.24426e-07  5.24666e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from   -7.040 sec. to   21.120 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.02503     ( -0.367008   0.106016 )
Epeak [keV] : 9999.99      ( -9999.99 -9999.99 )
Norm@50keV  : 3.46515E-02    ( -0.00187888   0.00172177 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   55.81     using 59 bins.
 Reduced chi-squared = 0.996607
# Null hypothesis probability of 4.82e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 28.16 sec: 3.97132 ( -0.23369  0.2282 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.03818e-05 ( -5.19856e-07  5.12078e-07 ) ergs/cm2

Band function

Time interval is from   -7.040 sec. to   21.120 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]    : 24.9465  (  )
R^2/D10^2   : 9.48969E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                  129.69     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 1.38e-07 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.892e-07   3.110e-08
25- 50  1.639e-06   1.488e-07
50-150  7.566e-06   5.294e-07
15-150  9.494e-06   5.688e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 17.4997       (     )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                  163.40     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.31e-12 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.227e-06   7.124e-08
25- 50  2.360e-06   1.433e-07
50-150  5.177e-06   3.520e-07
15-150  8.765e-06   5.350e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 9.58521        (-2.00402      2.36911)
R1^2/D10^2  : 1.13195        (-0.533201      1.24978)
kT2 [keV]   : 42.1176        (-7.79057      16.6284)
R2^2/D10^2  : 1.62114E-02    (-0.00983631   0.0145557)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   57.21     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.93e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.877e-07   1.721e-07
25- 50  2.070e-06   4.000e-07
50-150  7.718e-06   1.954e-06
15-150  1.048e-05   2.291e-06

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: 0.919778     ( -0.219477   0.210331 )
Norm@50keV  : 8.63562E-02    ( -0.01208   0.0119194 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   66.97     using 59 bins.
 Reduced chi-squared = 1.17491
# Null hypothesis probability of 1.72e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 0.102950 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.619e-07 ( -1.2818e-07  1.28284e-07 ) 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: -0.220065     ( -1.25958   0.9826 )
Epeak [keV] : 124.516      ( -34.5802 320.669 )
Norm@50keV  : 0.244962    ( -0.143571   0.460534 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   62.97     using 59 bins.
 Reduced chi-squared = 1.12446
# Null hypothesis probability of 2.43e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 2.35713E-02 ( -0.0235713  -0.0235713 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.54113e-07 ( -1.33591e-07  1.32238e-07 ) ergs/cm2

Band function

Time interval is from    0.180 sec. to    1.180 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]    : 24.7798  (-3.51578  4.41618)
R^2/D10^2   : 0.265191  (-0.106902   0.165183)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   65.30     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 2.11e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.842e-08   7.885e-09
25- 50  1.605e-07   3.595e-08
50-150  7.317e-07   1.499e-07
15-150  9.206e-07   1.696e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-24.9424      -200)
Norm        : 41.4686       (-5.81595     5.81595)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   90.47     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.15e-03 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.033e-07   5.780e-08
25- 50  1.987e-07   1.128e-07
50-150  4.358e-07   2.425e-07
15-150  7.378e-07   4.135e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 10.1302        (-10.1557      -10.1557)
R1^2/D10^2  : 1.30184        (-1.29764      -1.29764)
kT2 [keV]   : 30.6070        (-7.57052      -30.6235)
R2^2/D10^2  : 0.118771    (-0.118503   0.201726)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   62.77     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 2.20e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.452e-08   2.527e-08
25- 50  1.761e-07   9.370e-08
50-150  7.393e-07   3.962e-07
15-150  9.599e-07   4.878e-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: 1.03128     ( -0.0917248   0.0898922 )
Norm@50keV  : 3.44510E-02    ( -0.00187769   0.0018622 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   55.81     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 5.20e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 28.16 sec: 3.97363 ( -0.225744  0.226832 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.03767e-05 ( -5.24559e-07  5.24598e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.02472     ( -0.366661   0.0908835 )
Epeak [keV] : 9809.35      ( -9690.91 -9690.91 )
Norm@50keV  : 3.46524E-02    ( -0.00177866   0.0134864 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   55.81     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 4.82e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 28.16 sec: 3.96808 ( -0.23063  0.22998 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.03864e-05 ( -5.16145e-07  5.19355e-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)  = 1.96e-06
S(50-100 keV) = 3.83e-06

T90 vs. Hardness ratio plot

T90                                   = 22.0960000753403 sec.
Hardness ratio (energy fluence ratio) = 1.95408

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.86124
Count Ratio (50-100 keV) / (15-25 keV) = 2.32832

Mask shadow pattern

IMX = -1.543322842016900E+00, IMY = 1.569353617951765E-01

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000

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:
-239.824000 -7.040000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 98.9896  26.0216    2.1  31.6   84.7   3.6983   5.5 ------	UNKNOWN                       
 44.9802  72.5856    2.0  37.4 -166.9   2.7386   5.7 ------	UNKNOWN                       
187.7312  41.3832    2.8  44.4  -61.2   6.9021   4.1 ------	UNKNOWN

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

Time interval of the image:
-7.040000 21.120000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 88.8185  21.5761    3.4  40.1   94.8   1.2125   3.4 ------	UNKNOWN                       
 78.1280  45.9002    2.1  29.2  137.1   0.6467   5.4 ------	UNKNOWN                       
  9.7298  57.6337    0.6  57.2 -174.2  14.3340  20.8 ------	UNKNOWN                       
  9.3605  76.8847    2.9  44.3 -155.6   0.6977   4.0 ------	UNKNOWN                       
173.4315  55.1581    3.7  29.7  -74.4   0.4385   3.1 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
217.476590 664.076600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
170.3945 -60.5898    4.2  54.3   -8.0   3.3557   2.7    3.1	Cen X-3                       
186.7995 -62.7886    9.8  52.4  -17.8   1.8559   1.2    4.1	GX 301-2                      
244.9889 -15.6126    1.1  41.8 -106.0  32.9606  10.3    1.7	Sco X-1                       
171.0281  -2.6884    4.3  32.1   77.1   2.9885   2.7 ------	UNKNOWN                       
163.5477 -25.7401    2.9  39.0   36.6   4.2599   4.0 ------	UNKNOWN                       
226.0558  17.4344    1.8  37.4 -167.0   5.2388   6.4 ------	UNKNOWN

Plot creation:
Tue Dec 26 16:57:39 EST 2023