AIPS NRAO AIPS HELP file for EDITA in 31DEC18



As of Wed Jun 20 22:33:18 2018


EDITA: uv-data editor based on system gains or temperatures

INPUTS

INNAME                             Input UV data (name)
INCLASS                            Input UV data (class)
INSEQ                              Input UV data (seq. #)
INDISK                             Input UV data disk drive #
INEXT                              Input table type:
                                      (TY, SY, SN, CL)
INVERS                             Input table file version no.
DODELAY          -1.0       3.0    > 0 -> use delays/rates too
                                   = 2 => edit MB delay only
                                   = 3 => edit dispersion only
FREQID           -1.0              Frequency ID; 0 => 1
SUBARRAY          0.0              Subarray number 0 => 1.
FLAGVER                            Flag table version
OUTFGVER          0.0              Output FG table version
TIMERANG                           Time range to include
BIF                                First IF to include
EIF                                Last IF to include
ANTENNAS                           Antennas to include/exclude
SOLINT            0.0              Times within SOLINT (min) are
                                   treated as equal.
DETIME            0.0              Break interval (min)
DOHIST          -10.0       1.0    Record flags in history file
DOTWO            -1.0       1.0    True => do second observable
                                   plot of main baseline
EXPERT           -1.0       1.0    > 0 start in expert mode
CROWDED          -1.0       1.0    > 0 => allow plots with all
                                   polarizations and IFs
DO3COL           -1.0       2.0    > 0 => do CROWDED with
                                   multiple colors; =2 always
REASON                             Initial reason string
ANTUSE            0.0      90.0    Initial displayed antennas
BADDISK          -1.0      1000.0  Disks to avoid for scratch.

HELP SECTION

EDITA
Type:  Task
Use:   To edit uv data by examining system temperature, SysPower, or
       gain solution table data interactively.  The chosen observable,
       i.e,. system temperatures or the differences between the
       current system temperatures and a running mean from TY tables,
       power differences, power sums, power ratios (=Tsys) or
       differences of these from a running mean from SY tables, or
       antenna gain amplitudes, phases, delays, and rates from SN or
       CL tables, for an antenna is displayed as a function of time in
       an edit window.  You may view the entire time range or select
       more detailed time ranges interactively.  Optionally, under
       control of adverb DOTWO, a second observable for the same
       antenna may be displayed over the same time range in a window
       above the edit window.  Data in the primary observable for 0 to
       10 other antennas may be displayed over the same time range in
       windows above these on the TV screen.  This display is
       controlled interactively.  A menu-like control interface is
       available to select the data antenna and time range to be
       edited and to select various forms of editing.  An "expert
       mode" allows you to enter single-letter menu selections from
       the keyboard (xterm) while this expert mode is enabled.

       EDITA creates a Flag Command file attached to the input UV data
       file.  If one already exists - due to a prior power failure or
       program failure - it will be used.  This is a bit dangerous and
       should be done only if the data selection adverbs have the values
       they had when the FC file was created.
Adverbs:
  INNAME.....Input UV data file (name).       Standard defaults.
  INCLASS....Input UV data file (class).      Standard defaults.
  INSEQ......Input UV data file (seq. #).     0 => highest.
  INDISK.....Input UV data file disk drive #. 0 => any.
  INEXT......Table type: TY (system temperature), SY (EVLA SysPower),
             SN (gain solution), and CL (calibration) are supported.
             The task will use the TANT columns of a TY table if they
             are valid and will use the TSYS columns otherwise.  FILLM
             writes the TANT columns with more-or-less calibrated
             antenna temperatures for data taken after May 1996.  SY
             tables are provide with EVLA data - at least data read
             from the ASDM by obit (e.g. with BDF2AIPS).  The
             CalDevice (CD) table is also used to provide the Tcals.
  INVERS.....Input table file version number, 0 -> current highest.
             The input file is not changed, but may be sorted.
  DODELAY....> 0 AND <= 1.5 => use delays and rates as well as
                      amplitudes and phases in the displays and editing
                      process (for CL and SN)
             > 1.5 => use multi-band delays (only) in the displays and
                      editing process (for CL and SN, not usually for
                      EVLA data)
                      NOTE: MB delays are used by astrometric solving
                      tasks not in AIPS.  They are written into SN
                      tables by FRING when APARM(5)=1 but do not
                      differ from the single-band delays written into
                      all IFs.  FRING with APARM(5)=2 does a separate
                      solution for MB and SB delays and different
                      values will appear in the columns then.  MBDLY
                      will take phases from FRING with APARM(5)=0
                      (separate SB delays) and fit an MB delay which
                      it adds to the SN table.
             > 2.5 => use dispersion only in the displays and editing
                      process.  Dispersion may be computed by KRING or
                      FRING and is most important at the lowest
                      frequencies.
             <=  0 => do not display or edit upon delays and rates
  FREQID.....Frequency ID to edit.  0 => 1.
  SUBARRAY...Subarray number to edit.  0 => 1.
  FLAGVER....specifies the version of the flagging table to be applied
             to the data on input.     0 -> highest, -1 -> none.
             If the specified input flag table already exists, it is
             applied to the table data after they are read but before
             they are displayed.  Any points flagged thereby will not be
             displayed.  At the end, the flags are written into a flag
             table for both single-source and multi-source data sets.
  OUTFGVER...Flag table version to be used on output for both single-
             and multi-source data sets.  If OUTFGVER is <= 0 or
             greater than FGmax (the previously highest FG version
             number), then a new FG table will be created for the new
             flags with version FGmax+1.  This new table will also
             contain the flags applied on input (if any) from FG
             version FLAGVER.  If OUTFGVER specifies a pre-existing FG
             version, then the input flags are not copied even if
             OUTFGVER and FLAGVER are not equal.
  TIMERANG...Time range of the data to be edited. In order:
             Start day, hour, min. sec, end day, hour, min. sec. Days
             are relative to the reference date.
  BIF........The lowest numbered IF to include.   0 => 1.
  EIF........The highest numbered IF to include. 0 =>highest.
             Note: not all data sets will have IFs.
  ANTENNAS...A list of antenna numbers to include.  0 => all.
  SOLINT.....Samples within SOLINT (minutes) of the first sample in each
             time interval will be considered part of that interval,
             i.e., times with SOLINT of each other are treated as equal.
             0 => 1/6000 (i.e. 0.01 sec) which is fine in most cases.
  DETIME.....Samples more than DETIME (minutes) from the previous will
             be considered to imply a break in the time sequence and
             will be assigned a time interval after a gap of intervals
             or 2 intervals if the sample is more than 2 * DETIME later.
             < SOLINT => max (2, 5*SOLINT) minutes.  DETIME is used as
             the initial estimate of the scan length as well - this may
             be changed interactively.
  DOHIST.....> 0 => record task execution and flagging info in the
             history file (this can be a lot!).  <= 0.0 means to omit
             the flagging info and <= -9.5 means to omit the execution
             information as well.
  DOTWO......> 0 (true) means to do the secondary plot of a second
             observable (Tsys diff, amplitude, phase, etc) from the
             primary antenna.  <= 0 means to plot only the primary
             observable used for the editing.  True is recommended.
  EXPERT.....> 0 => the task begins in "expert mode" in which commands
             are entered with single characters at the keyboard rather
             than by TV menu selection.  You can switch in and out of
             expert mode interactively after the task begins without
             regard for the value of EXPERT.  If the task begins in
             EXPERT mode on CL or SN tables, it starts with the
             amplitudes plotted from 0 to maximum, phases from -180 to
             180, delays from -1000 to 1000 ns and rates from -1000 to
             1000 mHz.  With all tables in EXPERT mode, it starts with
             the ALL IF and ALL POL flags = .NOT.CROWDED rather than
             false.  These choices may be changed interactively.
  CROWDED....If true (> 0), the task will be allowed to plot and edit
             all IFs and/or all polarizations at once.  Otherwise,
             only one polarization and one IF are plotted at a time
             and much of the editing is based only on the values of
             that polarization/IF.
  DO3COL.....If CROWDED > 0 and DO3COL > 0, use 3 grey-scale image
             planes to plot the data in colors so as to differentiate
             between IFs and polarizations.  When one IF and
             polarization is plotted, the graphics plane is used
             unless DO3COL > 1.5.
  REASON.....The initial reason for flagging recorded in the FG table.
             ' ' => task name, date and time.  This can be changed
             interactively.
  ANTUSE.....Lists the antennas to appear in the initial display:
             antenna ANTUSE(1) is the initial edit antenna and
             ANTUSE(2) through ANTUSE(11) are the comparison antennas.
             The default is equivalent to ANTUSE=1,2,3 (or whatever
             are the 3 lowest numbered antennas).
  BADDISK....This array contains the numbers of disks on which it is
             desired that scratch files not be located.

EXPLAIN SECTION


     EDITA is a TV graphic editor for uv data using system temperature
(TY), EVLA SysPower (SY), gain solution (SN) and calibration (CL)
tables.  It works with the XAS-TV display graphics (and image) planes
to allow you to flag uv data based on values in the selected table.

     EDITA attempts to read the entire table into the pseudo-AP memory
when if starts up.  If it cannot fit all the data, it attempts to read
just one IF at a time.  In that case, when you switch IFs, EDITA reads
in the next IF.  EDITA will tell you as it starts whether "All data will
reside in memory" or "Will do only one IF in memory at a time".  The
SWITCH ALL IF option will not appear in the latter case.

     There are 5 parts to EDITA's display:
(1) A menu of operations displayed in two columns, one each at the left
and right sides of the screen.  When the menu is displayed, move the
cursor to the desired item and press buttons A, B, or C.  To get on-line
help in the message window about a given option, move the cursor to the
desired menu item and press button D.
(2) A plot at the bottom of the screen in a bright color (usually) of
the data which may be actively edited at present.  It is of the chosen
type for the selected antenna, polarization(s), and IF(s) and is
limited in time range by the current frame (which can be all or a
portion of the total time range).  Flagged data are shown in a
different color.  The time range of the frame may be made small to
expand the time axis, but may also be made so large as to cause
serious crowding of the plotted data points.  (Increase your XAS
window width to increase the plot scale.)
(3) A plot above the edit area plot in the same bright color of the data
from the selected antenna, polarization(s), and IF(s).  This plot is
in a second observable (e.g. if amplitude is in the edit plot, phase
is often the second observable).  For TY tables the two observables
are Tsys and the difference between Tsys and a running mean of Tsys
(scaled by that mean so that everything is on a similar scale).  Data
in this second area may not be used for editing but should be helpful
in choosing which data to delete in the edit area.  Flagged data are
shown in a different color.  This plot may be suppressed by adverb
DOTWO.
(4) 0-10 plots of data of the current data type, polarization(s), and
IF(s) for a list of 0-10 other antennas are shown above the second
plot.  They are shown for comparison using another color, while
flagged data are shown in a different color.
(5) Several text areas also appear including (a) the start and end times
for the current frame's time axis, (b) the selected data type, IF, and
polarization at the bottom of the screen, (c) the antenna shown in each
plot at the top right of each plot, (d) the current all-IF,
all-polarization, and all-antenna flags, (e) the y-axis tick values on
each of the frame plots, and (f) while interactively setting time and/or
value ranges, the time and/or value to which you are currently pointing
and the associated source name.

     You may change the size of the XAS window at any time.  EDITA will
not allow it to become too small, but will adjust its display for all
reasonable sizes.

     The left-hand menu can contain

| FLAG TIME       |  To delete one time at a time.
| FLAG TIME RANGE |  To delete one or more time ranges.
| FLAG BELOW      |  To delete all displayed times with data below a
                        cutoff value.
| FLAG ABOVE      |  To delete all displayed times with data above a
                        cutoff value.
| FLAG AREA       |  To delete one or more areas in the data-value -
                        time plane.
| FLAG POINT      |  To delete one sample at a time using both
                        horizontal and vertical cursor position.
| FLAG QUICKLY    |  To delete samples using only mouse clicks
| ENTER WT RNG    | (SN) To select the display range for solution
                        weight plots.  Use 0 -1 for 0 to antenna
                        maximum and 0 0 for min to max.
| ENTER AMPL RNG  | (SN) To select the display range for amplitude
                         plots
| ENTER PHASE RNG | (SN) To select the display range for phase plots.
| ENTER DELAY RNG | (SN) To select the display range for delay plots.
| ENTER RATE RNG  | (SN) To select the display range for rate plots.
| ENTER TSYS RNG  | (TY) To select the display range for system
                        temperature plots.  Use 0 -1 for 0 to antenna
                        maximum and  0 0 for min to max.
| ENTER TDIF RNG  | (TY) To select the display range for plots of the
                        difference between Tsys and its running average
                        divided by the average.
| ENTER PDIF RNG  | (SY) To select the display range for power
                        difference plots.  Use 0 -1 for 0 to antenna
                        maximum and  0 0 for min to max.
| ENTER PSUM RNG  | (SY) To select the display range for power sum
                        plots.  Use 0 -1 for 0 to antenna maximum and
                        0 0 for min to max.
| ENTER PGAIN RNG | (SY) To select the display range for PostGain
                        plots.
| ENTER TSYS RNG  | (SY) To select the display range for power sum
                        divided by power difference time Tcal (=Tsys)
                        plots. Use 0 -1 for 0 to antenna maximum and
                        0 0 for min to max.
| ENTER PD/P RNG  | (SY) To select the display range for plots of the
                        difference between Pdif and its running average
                        divided by the average.
| ENTER PS/P RNG  | (SY) To select the display range for plots of the
                        difference between Psum and its running average
                        divided by the average.
| ENTER PG/P RNG  | (SY) To select the display range for plots of the
                        difference between Pgain and its running average
                        divided by the average.
| ENTER TS/T RNG  | (SY) To select the display range for plots of the
                        difference between Psum/Pdif/2*Tcal (= Tsys)
                        and its running average divided by the average.
| SET SCAN LENGTH | (TY) To set the averaging time used to determine
                        the running average in seconds.
| LIST FLAGS      |  To list all flags now in the Flag Command table.
| UNDO FLAGS      |  To undo one of the flag operations in the FC table
| REDO FLAGS      |  To reapply all remaining flags after one or more
                        have been undone (see note below)
| SET REASON      |  To set the 24-character "reason" string to be put
                        in the uv-data flag table
| USE EXPERT MODE |  To control the task from the keyboard instead of
                        the menu.
| HOLD TV LOAD    |  To stop updating the TV display with every change
                     of parameter; change several, then select
| DO TV LOAD      |  To update the TV display now and with each change
                     of display parameter.
| REPLOT          |  To do the current plot over again, recomputing
                        the differences from the running mean if
                        appropriate.
| EXIT            |  To exit EDITA, writing the data back to the output
                     SN table and moving the FC table to a uv-data FG
                     table
| ABORT           |  To exit EDITA, deleting the output SN table and the
                     FC table


     The right-hand menu can contain

| NEXT POL/IF     |  To switch to viewing the next correlator,
                        switching to the other polarization and, if
                        needed, incrementing the IF.
| SWITCH POLARIZ  |  To switch to viewing and editing the other
                        polarization (can cycle through all).
| SWITCH ALL POL  |  To switch functions from applying to one
                        polarization to applying to both polarizations
                        or vice versa.
| ENTER IF        |  To select which IF is viewed and edited.  (SN) This
                        can cause the current IF to be written to disk
                        if all IFs did not fit in memory.  0 -> all.
| SWITCH ALL IF   |  To switch functions from applying to one IF, to
                        applying to a range of IFs, or to applying to
                        all IFs (in sequence).
| SWITCH ALL TIME |  To switch FLAG ABOVE and FLAG BELOW between all
                        times and the time range of the frame
| SWITCH ALL SOURC|  To switch between flagging the current source and
                        all sources.
| SWITCH ALL ANT  |  To switch functions from applying to one antenna to
                        applying to all antennas or vice versa.
| ENTER ANTENNA   |  To select the antenna to be displayed at the top
                        and in the edit area and to be edited.
| ENTER OTHER ANT |  To select up to 10 other antennas to be displayed;
                        enter 10 numbers, 0's are then ignored (to plot
                        5 enter the 5 plus 5 0's)
| NEXT ANTENNA    |  To select an antenna one higher than the currently
                        selected antenna
| PLOT ALL TIMES  |  To display and edit data for all times.
| SELECT FRAME    |  To select a window into the current data
                        interactively.
| NEXT FRAME      |  To select the next time range window.
| PREVIOUS FRAME  |  To select the previous time range window.
| TV ZOOM         |  To alter the display zoom used while in the flag
                        functions.
| OFF ZOOM        |  To turn off any zooming.
| SHOW TSYS       | (TY) To display and edit system temperatures
| SHOW TSYS/-1 | (TY) To display and edit the differences between
                        system temperature and its running mean
| SHOW PDIF       | (SY) To display and edit power differences
                         (Pon-Poff)
| SHOW PSUM       | (SY) To display and edit power sums (Pon+Poff)
| SHOW PGAIN      | (SY) To display and edit power post gains (Pgain)
| SHOW TSYS       | (SY) To display and edit Psum/Pdif/2*Tcal = Tsys
| SHOW PDIF/

-1 | (SY) To display and edit the differences between power difference and its running mean | SHOW PSUM/

-1 | (SY) To display and edit the differences between power sum and its running mean | SHOW PGAIN/

-1 |(SY) To display and edit the differences between Pgain and its running mean | SHOW TSYS/-1 | (SY) To display and edit the differences between Psum/Pdif/2*Tcal = Tsys and its running mean | SHOW ALSO PDIF | (SY) To display power differences (Pon-Poff) in the secondary window. | SHOW ALSO PSUM | (SY) To display power sums (Pon+Poff) in the secondary window. | SHOW ALSO PGAIN | (SY) To display power post gains in the secondary window. | SHOW ALSO TSYS | (SY) To display Psum/Pdif/2*Tcal = Tsys in the secondary window. | SHOW ALSO DPDIF | (SY) To display the difference between the power difference and its running mean in the secondary window. | SHOW ALSO DPSUM | (SY) To display the difference between the power sum and its running mean in the secondary window. | SHOW ALSO DPGAIN |(SY) To display the difference between the power post gain and its running mean in the secondary window. | SHOW ALSO DTSYS | (SY) To display the difference between Psum/Pdif/2 * Tcal = Tsys and its running mean in the secondary window. | SHOW WEIGHT | (SN) To display and edit solution weights | SHOW AMPLITUDE | (SN) To display and edit amplitudes. | SHOW PHASE | (SN) To display and edit phases. | SHOW DELAY | (SN) To display and edit delays. | SHOW RATE | (SN) To display and edit rates. | SHOW ALSO WT | (SN) To display solution weights in the secondary window. | SHOW ALSO AMPL | (SN) To display amplitudes in the secondary window. | SHOW ALSO PHASE | (SN) To display phases in the secondary window. | SHOW ALSO DELAY | (SN) To display delayss in the secondary window. | SHOW ALSO RATE | (SN) To display rates in the secondary window.



     The menus will not show all of these options every time.  The HOLD
TV LOAD option is shown until invoked, and then is replaced with the DO
TV LOAD.  When that is invoked, the HOLD TV LOAD option reappears.  The
DELAY and RATE options appear only if the DODELAY adverb was true.  The
SWITCH POLARIZ and SWITCH ALL POL options appear only if there are two
polarizations in the TY or SN/CL table.  The ENTER IF option appears
only if there is more than one IF in the table and the SWITCH ALL IF
option appears only if there is more than one IF and all IFs fit in the
program memory.  The options marked (SN) appear only when SN/CL tables
are used and those marked with (TY) or (SY) appear only when TY or SY
tables are used.  The only SHOW and SHOW ALSO options to appear are
for those not already displayed.

     With TY editing, plots of the difference between the system
temperature and its running mean divided by the running mean can be
particularly sensitive to short term disturbances while ignoring slow
changes due to gradually changing elevation and the like.  The running
mean is not carried between sources and, as a result, is not normally
carried across scan boundaries.  Similar comments apply to SY editing
with the Pdif and Psum values.

     Note that value-dependent flagging (FLAG BELOW, ABOVE, AREA) use
the values currently plotted to make a list of value-independent flag
commands (i.e., a single time for the specified antennas, IFs,
polarizations, etc.).  When a value-dependent FLAG operation is undone
(UNDO FLAGS) or redone (REDO FLAGS), it is these value-independent flags
which are undone or redone.  You may have to undo more commands and then
repeat FLAG commands to get the results you could have gotten by doing
the now desired value-dependent command in the first place.  You need
also to be careful with the SWITCH ALL ANT setting with these
value-dependent commands.  If one antenna is set, then the commands only
apply to the current antenna.  If all antennas is set, the commands
apply to all antennas.  The first two set a clip level, below or above
which data are deleted, based on the value of the observable in each
antenna independently.  The FLAG AREA command, however, only looks at
the values of the observable in the main edit antenna and flags those
samples from all applicable antennas.

     Be careful when choosing EXIT versus ABORT.  The former applies the
flag commands to a flag table attached to the input uv data, the latter
causes the flag commands to disappear without a trace.  After EXIT, of
course, one may use, edit, or ignore the output flag (FG) table.  For
single-source files, it may be necessary to run SPLIT to apply the FG
table to the data since only some tasks know how to apply FG tables
(those with FLAGVER as an adverb).

     The colors used by EDITA are those of the various graphics planes
when it begins to run.  You may change them with the AIPS verb GWRITE to
more desirable colors.  The planes are:
   Plane     Default RGB      Use
     1     1.00  1.00  0.00   Main editing and secondary windows
     2     0.06  1.00  0.00   Comparison antenna data windows
     3     1.00  0.67  1.00   Menu highlight
     4     0.00  1.00  1.00   Edit and frame window boundaries
     5     1.00  0.18  0.18   Flagged data in all windows
     6     0.60  0.60  1.00   Menu foreground
     7     1.00  0.80  0.40   unused
You may wish to change the colors to ones that you can see better.
When CROWDED and DO3COL are invoked together, TV channels 14-16 are
used for a 3-color display to help you see which IF/polarization is
which.  The colors range from red to blue starting with IF BIF,
polarization 1, then polarization 2, then IF 2 polarization 1, and so
on.  When you select a single IF and polarization, graphics plane 1 is
used unless you set DO3COL > 1.5.  In that case each correlation is
plotted in its unique color whether in a single display or a crowded
one.  When displaying one IF and two polarizations, the colors are
chosen so that polarization 1 appears in a red/orange color and
polarization 2 in a green/blue color.

     In "expert" mode, you are prompted with a set of 4-character codes.
You type in the letter within that code that is shown in upper case
(left-justified with a carriage return) to get the desired function.
The expert functions allowed are

      Code  Prompt  Full menu OP name
         T   Time   FLAG TIME
         R   Rang   FLAG TIME RANGE
         B   Belo   FLAG BELOW
         A   Abov   FLAG ABOVE
         E   arEa   FLAG AREA
         O   pOin   FLAG POINT
         Q   Quik   FLAG QUICKLY
         L   List   LIST FLAGS
         U   Undo   UNDO FLAGS
         C   nCor   NEXT POL/IF
         N   Nant   NEXT ANTENNA
         F   Fram   SELECT FRAME
         M   aMpl   SHOW AMPLITUDE    (SN)
         P   Phas   SHOW PHASE        (SN)
         D   Dely   SHOW DELAY        (SN)
         S   Srat   SHOW RATE         (SN)
         S   tSys   SHOW TSYS         (TY)
         D   tDif   SHOW TSYS -    (TY)
         D   tDif   SHOW PDIF         (SY)
         S   pSum   SHOW PSUM         (SY)
         Y   tsYs   SHOW TSYS         (SY)
         X   eXit   EXIT EXPERT MODE
         H   Help   THIS HELP LIST

although some may be suppressed depending on what is currently
displayed.


AIPS