AIPS HELP file for SYVSN in 31DEC24
As of Fri Apr 26 11:18:07 2024
SYVSN: Plots selected SY data with SN phases versus time
INPUTS
INNAME UV data (name).
INCLASS UV data (class).
INSEQ 0.0 9999.0 UV data (seq. #). 0 => high
INDISK 0.0 9.0 Disk unit #. 0 => any
INVERS SY table file version no.
SNVER SN table file version no.
SOURCES Source list
QUAL -10.0 Source qualifier -1=>all
TIMERANG Time range to plot
STOKES 'R', 'L', 'RL', 'RRLL'
SELBAND Bandwidth to plot (kHz)
SELFREQ Frequency to plot (MHz)
FREQID Freq. ID to plot, -1=>all
SUBARRAY -1.0 Limit to subarray; 0 -> 1
-1 -> all
ANTENNAS Antennas to plot 0=>all
PIXRANGE Range to plot: 0 => self
scale each antenna separately
NPLOTS 0.0 28.0 Number of plots per page
OPTYPE SY Data to be plotted:
'PSYS','PSUM','PDIF'
REFANT Reference antenna: 0 none
else subtract value of
REFANT from all others
OPCODE SN data to be plotted
'PHAS','DELA','AMP '
APARM (1,2) IF range sum SY over
(3,4) IF range 1 for SY mean
(5,6) IF range 2 for SY mean
(7) scale SY factor
(8) =1 -> plot normalized
BPARM (1,2) IF range sum SN over
(3,4) IF range 1 for SN mean
(5,6) IF range 2 for SN mean
(7) scale SN factor
SAMPTYPE Smoothing type for corr.
' ' -> none
CPARM Smoothing parameters for
correlation computation
XINC 0.0 Compute linear correlation
coeff every XINC seconds if
XAXIS < 0. 0 -> don't
CROWDED 0.0 1 -> Plot pols together
XAXIS Variable data is to be
plotted against, 0=>time.
< 0 -> do also SY vs SN
DO3COLOR -1.0 2.0 > 0 use 3-color symbols for
DO3COL=2 => color by source
SYMBOL 0.0 24.0 Plot symbol number: 1 - 24
FACTOR -10.0 10.0 Scale plot symbols by FACTOR
<0 => connect points too
DOBLANK -1.0 24.0 > 0, show blanked values with
symbol type DOBLANK
CUTOFF Table weights <= CUTOFF will
not be plotted, flagged data
are not plotted.
DOSCAN -1.0 2.0 = 1 -> plot full boundaries
= 2 -> plot ticks at scans
LTYPE -410.0 410.0 Type of labeling: 1 border,
2 no ticks, 3 - 6 standard,
7 - 10 only tick labels
<0 -> no date/time
DOTV -1.0 1.0 > 0 Do plot on the TV, else
make a plot file
GRCHAN 0.0 8.0 Graphics channel
XYRATIO 0.0 X/Y ratio 0 -> fit TV or 1 PL
HELP SECTION
SYVSN
Type: Task
Use: Plots selected calibration data versus time from specified SY
or TY (whichever occurs in the input data set) and SN tables.
Unlike SNPLT it constructs functions of the measured Psum,
Psys, Pdif, Tsys, or Tant and compares them with functions of
the SN table phases, delays, or amplitudes.
Adverbs:
INNAME.....UV file name (name). Standard defaults.
INCLASS....UV file name (class). Standard defaults.
INSEQ......UV file name (seq. #). 0 => highest.
INDISK.....Disk unit #. 0 => any.
INVERS.....SY/TY table version number of table to plot,
0=>highest no.
SNVERS.....SN table version number of table to plot, 0=>highest no.
SOURCES....Source list. '*' = all; a "-" before a source name means
all except ANY source named.
QUAL.......Only sources with a source qualifier number in the SU table
matching QUAL will be used if QUAL is not -1.
TIMERANG...Time range of the data to be plotted. In order: Start day,
hour, min. sec, end day, hour, min. sec. Days relative to
reference date. If a start and stop time are given and
the XAXIS is 1 (time), then all plots will be from the
given start time to the given stop time. Otherwise, the
X-axis is plotted over the range of X values found in the
data. All plots in a given execution will be on the same
X scale in any case.
STOKES.....The desired Stokes type of the displayed data:
'R' = RCP, 'L' = LCP, 'RL' or 'RRLL' both RCP and LCP
'V' = VLP, 'H' = HLP, 'VH' or 'VVHH' both VLP and HLP
SELBAND....Bandwidth of data to be selected. If more than one IF is
present SELBAND is the width of the first IF required.
Units = kHz.
SELFREQ....Frequency of data to be selected. If more than one IF is
present SELFREQ is the frequency of the first IF required.
Units = MHz.
FREQID.....Frequency identifier to select (you may determine which is
applicable from the OPTYPE='SCAN' listing produced by
LISTR). If either SELBAND or SELFREQ are set, their values
overide that of FREQID. However, setting SELBAND and
SELFREQ may result in an ambiguity. In that case, the task
will request that you use FREQID. -1 => all, 0 => first
SUBARRAY...Limit display to specific subarray. -1 -> all, 0 -> 1.
ANTENNAS...A list of the antennas to be plotted. All 0 => all. If any
number is negative then all antennas listed are NOT to be
plotted and all others are.
PIXRANGE...If PIXR(1) < PIXR(2), all plots will be from PIXR(1) to
PIXR(2). Otherwise each plot will be self-scaling.
NPLOTS.....Number of antennas to plot per page (try 5).
OPTYPE.....Data to be plotted: default PSYS
'PSYS' = EVLA PSUM/PDIF/2 * Tcal (=Tsys) (SY)
uses values from the CD table
'PSUM' = EVLA Gb * (Pon + Poff) (SY)
'PDIF' = EVLA Gb * (Pon - Poff) (SY)
'TSYS' = Tsys values from TY table
'TANT' = Tant values from TY table
OPCODE.....Type of SN data plot:
'PHAS' = gain phase in degrees (default)
'AMP ' = gain amplitude
'DELA' = delay in ns
APARM......(1,2) Average SY data over this range of IFs: NO DEFAULT
(3,6) Subtract mean SY value in 1 or 2 IF ranges:
IFs APARM(3) through APARM(4) and APARM(5) through
APARM(6). If 0 in APARM(5,6), do only APARM(3,4).
If 0 in APARM(3,4), do not subtract the mean.
(7) Scale the result by APARM(7). 0 -> 1.
(8) 1 => Plot value/mean - 1 rather than value - mean.
BPARM......(1,2) Average SN data over this range of IFs: NO DEFAULT
(3,6) Subtract mean SN value in 1 or 2 IF ranges:
IFs BPARM(3) through BPARM(4) and BPARM(5) through
BPARM(6). If 0 in BPARM(5,6), do only BPARM(3,4).
If 0 in BPARM(3,4), do not subtract the mean.
(7) Scale the result by BPARM(7). 0 -> 1.
SAMPTYPE...The type of smoothing used to make the correlation
computation: ' ' -> do not do this computation
'BOX ' = boxcar smoothing (default)
'MWF ' = Median window filter
'GAUS' = Gaussian
'EXP ' = Exponential
'LINE' = Linear (1 - abs(t-t0)/sigma)
'2PT ' = Two-point
'2PTH' = Two-point + "Hanning"
CPARM......Parameters for smoothing function to get SN and SY on the
same grid of times (or other X axis parameters)
Function support full-width width
(1) => support time for SY parameter (0 -> 30)
(2) => support time for SN parameter (0 -> 30)
Added parameter (FWHM) for GAUS, EXP, LINE
(6) => smoothing FWHM time for SY parameter
(7) => smoothing FWHM time for SN parameter
Units are seconds for XAXIS=1 (time), 0.01 degrees for
elevation, parallactic angle, and azimuth, and 10s of
seconds for hour angle and LST.
XINC.......If XAXIS < 0, compute liner correlation coefficients
every XINC seconds. 1 < XINC < 25 -> 180; <= 1 -> don't
CROWDED....0 -> polarizations appear in separate panels
1 -> polarizations appear in the same panel (use DO3COL =
1 to separate the two)
2 -> the two parameters appear in the same panel (use
DO3COL = 1 to separate the two), polarizations are
in separate panels. The SY table values are labeled
and the SN values are self-scaled.
XAXIS......Variable data are to be plotted against. <= 0 => 1
(< 0) Plot also plots with SY on the X axis and SN on
the Y axis, one antenna/polarization at a time.
NOTE: SAMPTYPE and CPARM must also be specified
(1) = Data label time
(2) = Antenna elevation
(3) = Hour angle
(4) = Local Sidereal Time
(5) = Parallactic angle
(6) = Antenna azimuth
Moving sources are supported for XAXIS 2-6 if a
PO table is attached.
DO3COLOR...DO3COL = 1 tells SYVSN to plot Right or X polarization in
pink (graphics plane 3) and Left or Y polarization in
cyan (graphics plane 4).
DO3COL = 2 tells SYVSN to separate the plotted points
with color representing source. The list of source
numbers actually occurring in the table, time range,
source list, et al. is translated into consecutive
integers (in the same order) and then assigned red
through dark blue. Thus source numbers 1,2,5,10
become red, yellow, cyan, and blue, resp. no matter
what order they appear in the table.
SYMBOL.....Choices are
1: Plus sign 13: Star of David
2: Cross (X) 14: Seven-pointed star
3: Circle 15: Eight-pointed star
4: Box 16: Nine-pointed star
5: Triangle 17: Ten-pointed star
6: Diamond 18: 11-pointed star
7: Pentagon 19: 12-pointed star
8: Hexagon 20: 13-pointed star
9: Septagon 21: 14-pointed star
10: Octagon 22: Plus (+) with gap
11: Nine-gon 23: Cross (X) with gap
12: Five pointed star 24: Vertical line
FACTOR.....Scale plot symbols by FACTOR 0 -> 1.
If FACTOR < 0, draw lines between the points and use
abs(FACTOR) to scale the points plotted.
DOBLANK....> 0 => plot blanked solutions with a symbol of type
DOBLANK (see symbol types above). They will be plotted
along the lower edge of each plot. NOTE: if DOTV true
and GRCHAN 0 and DO3COL <= 0, then the blanked samples
will be in the color of graphics channel 3 (pink) and the
good samples in the color of graphics channel 4 (blue).
DOBLANK > 0 is forced to be different than SYMBOL by
adding 1.
CUTOFF.....If >= 0, the task will examine the weight column of the
table and if the weight <= CUTOFF, the task will not plot
that sample. If = 0, will plot all good points; flagged
data are not plotted. CUTOFF is ignored for TY and PC
tables and OPTYPEs MDEL, ATM, GEO, and CCAL.
DOSCAN.....> 0 => plot scan boundaries when there is an NX table and
the X axis is time. The boundary is a tick mark when
DOSCAN=2 and a full line when DOSCAN=1.
<= 0 -> do not plot boundaries.
LTYPE......Labelling type, see HELP LTYPE for details:
1 = border, 2 = no ticks, 3 or 7 = standard, 4 or 8 =
relative to ref. pixel, 5 or 9 = relative to subimage
(BLC, TRC) center, 6 or 10 = pixels. 7-10 all labels
other than tick numbers and axis type are omitted.
Less than 0 is the same except that the plot file
version number and create time are omitted.
Add n * 100 to alter the metric scaling.
DOTV.......> 0 => plot directly on the TV device, otherwise make a
plot file for later display on one or more devices
(including the TV if desired).
GRCHAN.....Graphics channel (1 - 7) to use for line drawing.
A value of 0 causes more than one graphics channel to be
used.
XYRATIO....Scale the X axis longer than the Y by XYRATIO.
If DOTV > 0, 0 -> fit to the TV window
If DOTV <= 0, 0 -> 1.
EXPLAIN SECTION