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INSPECTION OF VARIABLES

Miriad task, uvcheck, is to check uv-variable values and flag uv-data if variables or data are out of range.

 Task:   uvcheck
  vis      = sgra690_rx2.lsb
  var      = antaz

It reports:

0 known problems in this data
0 channels flagged
0 wideband flagged
antaz: 8656 values in range: -0.10000E+21 to 0.10000E+21
Average=179.74 rms=34.475 Min=123.38 Max=252.07

It also can flag the visibility channel data outside a range of the variable specified:

 Task:   uvcheck
  vis      = sgra690_rx2.lsb
  flagval  = flag
  var      = systemp
  range    = 0,8000
It reports:
0 known problems in this data
2304 channels flagged
0 wideband flagged
systemp:  6489 values in range:0.0000 to 8000.0
Average=2460.9 rms=799.79 Min=274.23 Max=6870.7

Miriad task, uvlist, with options=var,full can list all the variables in a uv file:

Task:   uvlist
  vis      = sgra690_rx2.lsb
  options  = var,full

Header variables at 05FEB16:14:05:13
antaz   :   191.13       191.13       191.13       191.13       191.13
antaz   :   191.13       191.13       191.13
antel   :   63.877       63.877       63.877       63.877       63.877
antel   :   63.877       63.877       63.877
antpos  :   14.809      -19.019      -1.6939       17.437      -59.769
antpos  :   0.0000       0.0000       0.0000      -213.07      -63.328
antpos  :  -83.905      -66.972      -198.66       0.0000       0.0000
antpos  :   0.0000      -72.842       52.067       4.2689      -49.515
antpos  :   100.30       0.0000       0.0000       0.0000
calcode :c                                        dec     : -5:51:18.830
epoch   :  2000.00       evector : 0.785398
instrume:SMA                                      inttime :  10.3000
ischan  :       1      33      65      97     129     161     193     225
ischan  :     257     289     321     353     385     417     449     481
ischan  :     513     545     577     609     641     673     705     737
jyperk  :  139.000       latitud : 19:49:27.139   longitu : 204:31:22.796
mount   :       0        nants   :       8        nchan   :     768
npol    :       1
nschan  :      32      32      32      32      32      32      32      32
nschan  :      32      32      32      32      32      32      32      32
nschan  :      32      32      32      32      32      32      32      32
nspect  :      24        obsdec  : -5:53:02.285
observer:SmaUser                                  obsra   : 13:10:35.488
pol     :      -5        ra      : 13:10:19.171
restfreq:   689.00       689.00       689.00       689.00       689.00
restfreq:   689.00       689.00       689.00       689.00       689.00
restfreq:   689.00       689.00       689.00       689.00       689.00
restfreq:   689.00       689.00       689.00       689.00       689.00
restfreq:   689.00       689.00       689.00       689.00
sdf     : -3.25000E-03 -3.25000E-03 -3.25000E-03 -3.25000E-03 -3.25000E-03
sdf     : -3.25000E-03 -3.25000E-03 -3.25000E-03 -3.25000E-03 -3.25000E-03
sdf     : -3.25000E-03 -3.25000E-03 -3.25000E-03 -3.25000E-03 -3.25000E-03
sdf     : -3.25000E-03 -3.25000E-03 -3.25000E-03 -3.25000E-03 -3.25000E-03
sdf     : -3.25000E-03 -3.25000E-03 -3.25000E-03 -3.25000E-03
sfreq   :   680.03       679.95       679.88       679.79       679.71
sfreq   :   679.62       679.55       679.47       679.38       679.30
sfreq   :   679.22       679.14       679.05       678.97       678.89
sfreq   :   678.81       678.72       678.64       678.56       678.48
sfreq   :   678.39       678.31       678.24       678.15
source  :callisto                                 sourid  :       1
systemp :  1689.99      1419.48      1646.18      1859.80      1468.15
systemp :  1175.32      0.00000      0.00000      tcorr   :       0
telescop:SMA                                      veldop  :     -36.370
veltype :VELO-LSR
version :test                                     vsource :  0.00000



Jun-Hui Zhao (miriad for SMA)
2012-07-09