; UV ;--------------------------------------------------------------- ;! Information about UV ;# INFORMATION GENERAL ;----------------------------------------------------------------------- ;; Copyright (C) 1995-2017 ;; Associated Universities, Inc. Washington DC, USA. ;; ;; This program is free software; you can redistribute it and/or ;; modify it under the terms of the GNU General Public License as ;; published by the Free Software Foundation; either version 2 of ;; the License, or (at your option) any later version. ;; ;; This program is distributed in the hope that it will be useful, ;; but WITHOUT ANY WARRANTY; without even the implied warranty of ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ;; GNU General Public License for more details. ;; ;; You should have received a copy of the GNU General Public ;; License along with this program; if not, write to the Free ;; Software Foundation, Inc., 675 Massachusetts Ave, Cambridge, ;; MA 02139, USA. ;; ;; Correspondence concerning AIPS should be addressed as follows: ;; Internet email: aipsmail@nrao.edu. ;; Postal address: AIPS Project Office ;; National Radio Astronomy Observatory ;; 520 Edgemont Road ;; Charlottesville, VA 22903-2475 USA ;----------------------------------------------------------------------- UV LLLLLLLLLLLLUUUUUUUUUUUU CCCCCCCCCCCCCCCCCCCCCCCCCCCCC ---------------------------------------------------------------- List of verbs, adverbs, tasks in category UV ACCOR Corrects cross amplitudes using auto correlation measurements ACLIP edits suto-corr data for amplitudes, phases, and weights out of range ACSCL Corrects cross amplitudes using auto correlation measurements ADDIF Adds an IF axis to a uv data set AFILE sorts and edits MkIII correlator A-file. ALIAS adverb to alias antenna numbers to one another ALVAR plots the Allan Variance statistic of a UV data set ALVPR prints statistics on the Allan Variance of a UV data set ANBPL plots and prints uv data converted to antenna based values ASDMFILE Full path to EVLA ASDM/BDF directory ATLOD Reads ATCA data in RPFITS dormat into AIPS AVER Averages over time UV data sets in 'BT' order AVOPTION Controls type or range of averaging done by a task AVSPC Averages uv-data in the frequency domain BAND specifies the approximate frequency of UV data to be selected BASFIT fits antenna locations from SN-table data BASRM Task to remove a spectral baseline from total power spectra BDF2AIPS Read EVLA ASDM/BDF data into AIPS BDFLIST List contents of EVLA ASD data file BIF gives first IF to be included BLAVG Average cross-polarized UV data over baselines. BLOAT converts line data to greater number channels BPASSPRM Control adverb array for bandpass calibration BPEDT Interactive TV task to edit uv data based on BP tables BPLOT Plots bandpass tables in 2 dimensions as function of time BPSMO Smooths or interpolates bandpass tables to regular times BPWAY Determines channel-dependent relative weights BPWGT Calibrates data and scales weights by bandpass correction BREAK procedure to TELL FILLM to break all current uv files, start new BSCAN seeks best scan to use for phase cal, fringe search, .. BSMOD creates single-dish UV beam-switched data with model sources BSROT modifies SD beam-switch continuum data for error in throw CALIB determines antenna calibration: complex gain CAPLT plots closure amplitude and model from CC file CENTR modifies UV data to center the reference channel CLIP edits data based on amplitudes, phases, and weights out of range CLPLT plots closure phase and model from CC file CMETHOD specifies the method by which the uv model is computed CMODEL specifies the method by which the uv model is computed COHER Baseline Phase coherence measurement CONFIG Configuration ID number within an EVLA ASDM/BDF data set CORER calculates correlator statistics and flags bad ones CORFQ corrects uvw for incorrect observing frequency CVEL shifts spectral-line UV data to a given velocity DAYFX Fixes day number problems left by FILLM DBAPP appends one or more data sets to the output data set DBCON concatenates two UV data sets DECOR Measures the decorrelation between channels and IF of uv data DEFER Controls when file creation takes place DEFLG edits data based on decorrelation over channels and time DESCM copies a portion of a UV data set DFQID modifies UV data changing the indicated FQIDs DFTIM Makes image of DFT at arbitrary point showing time vs frequency DFTPL plots DFT of a UV data set at arbitrary point versus time DIFRL divides the RR data by LL data DIFUV Outputs the difference of two matching input uv data sets DOACOR specifies whether autocorrelation data are included DOARRAY spcifies if subarrays are ignored or the information used DOBTWEEN Controls smoothing between sources in calibration tables DOCONCAT selects concatenated or indivudual output files DOEBAR Controls display of estimates of the uncertainty in the data DOIFS controls functions done across IFs DOROBUST Controls method of averaging - simple mean/rms or robust DOSTOKES selects options related to polarizations DOUVCOMP selects use of compression in writing UV data to disk DQUAL Rearranges source list, dropping qualifiers DSORC copies a data set elliminating some source numbers DSTOK Drops the cross-hand polarizations DTCHK Task to check results of a test using simulated data. DTSUM Task to provide a summary of the contents of a dataset EDITA Interactive TV task to edit uv data based on TY/SY/SN/CL tables EDITR Interactive baseline-oriented visibility editor using the TV EIF last IF number to be included in operation ELFIT Plots/fits selected contents of SN, TY, SY, PC or CL files EVASN Evaluates statistics in SN/CL tables EVAUV Subtracts & divides a model into UV data, does statistics on results EVLA puts the list of eVLA antennas in the current file on stack FEW procedure to TELL FILLM to append incoming data to existing uv files FGCNT Counts samples comparing two flag tables FGDIF Compares affect of 2 FG tables FGPLT Plots selected contents of FG table FGSPW Flags bad spectral windows FGTAB Plots selected contents of FG table FILLM reads VLA on-line/archive format uv data tapes (post Jan 88) FILLR reads old VLA on-line-system tapes into AIPS FINDR Find normal values for a uv data set FITAB writes images / uv data w extensions to tape in FITS format FITDISK writes images / uv data w extensions to disk in FITS format FITTP writes images / uv data w extensions to tape in FITS format FIXAL least squares fit aliasing function and remove FIXAN fixes the contents of the ANtenna extension file FIXRL correctes right vs left polarizations for a list of antennas FIXWT Modify weights to reflect amplitude scatter of data FLAGR Edit data based on internal RMS, amplitudes, weights FLGIT flags data based on the rms of the spectrum FLOPM reverses the spectral order of UV data, can fix VLA error FOV Specifies the field of view FQCENTER specifies that the frequency axis should be centered FRMAP Task to build a map using fringe rate spectra FRPLT Task to plot fringe rate spectra FTFLG interactive flagging of UV data in channel-time using the TV FUDGE modifies UV data with user's algorithm: paraform task FXALIAS least squares fit aliasing function and remove FXPOL Corrects VLBA polarization assignments FXTIM fixes start date so all times are positive FXVLA Task to correct VLA data for on-line errors in special cases. FXVLB Builds a CQ table to enable VLBA correlator loss corrections GCPLT Plots gain curves from text files HA2TI Converts data processed by TI2HA (STUFFER) back to real times HAFIX Recomputes u,v,w when time is hour angle (UVdata is output of TI2HA) HLPEDIBP Interactive BP table uv-data editor BPEDT - run-time help HLPEDICL Interactive SN/CL table uv-data editor - run-time help HLPEDIPC Interactive PC table editor PCEDT - run-time help HLPEDISN Interactive SN/CL table (not UV) editor - run-time help HLPEDISS Interactive SY table (not UV) editor - run-time help HLPEDISY Interactive SY table uv-data editor EDITA - run-time help HLPEDITS Interactive TY table (not UV) editor - run-time help HLPEDITY Interactive TY table uv-data editor EDITA - run-time help HLPEDIUV Interactive uv-data editor EDITR - run-time help HLPFTFLG Interactive time-channel visibility Editor - run-time help HLPIBLED Interactive Baseline based visibility Editor - run-time help HLPPCFLG Interactive time-channel PC table Editor PCFLG - run-time help HLPSPFLG Interactive time-channel visibility Editor SPFLG - run-time help HLPTVFLG Interactive time-baseline visibility Editor TVFLG - run-time help HLPUFLAG Edit uv-data on a grid UFLAG - run-time help HLPWIPER edit uv data from UVPLT-like plot WIPER - run-time help HOLGR Read & process holography visibility data to telescope images HOLOG Read & process holography visibility data to telescope images HSA puts the list of HSA antennas in the current file on stack IBLED Interactive BaseLine based visibility EDitor IM2UV converts an image to a visibility data set IMFRING large image delay fitting with IM2CC and OOFRING IMSCAL large image self-cal with IM2CC and OOCAL LISTR prints contents of UV data sets and assoc. calibration tables LOCIT fits antenna locations from SN-table data LPCAL Determines instrumental polarization for UV data M3TAR translate Haystack MKIII VLBI format "A" TAR's into AIPS MANY procedure to TELL FILLM to start new uv files on each scan MAPBM Map VLA beam polarization MATCH changes antenna, source, FQ numbers to match a data set MK3IN translate Haystack MKIII VLBI format "A" tapes into AIPS MORIF Combines IFs or breaks spectral windows into multiple windows (IFs) MSORT Sort a UV dataset into a specified order MULIF Change number of IFs in output MULTI Task to convert single-source to multi-source UV data NANS reads an image or a UV data set and looks for NaNs NCHAN Number of spectral channels in each spectral window NIF Number of IFs (spectral windows) in a data set NOIFS makes all IFs into single spectrum NPIECE The number of pieces to make OBJECT The name of an object OBPLT Plot columns of an OB table. OMFIT Fits sources and, optionally, a self-cal model to uv data OOCAL determines antenna complex gain with frequency-dependent models OOSRT Sort a UV dataset into a specified order OOSUB Subtracts/divides a model from/into a uv data base PCAL Determines instrumental polarization for UV data PCASS Finds amplitude bandpass shape from pulse-cal table data PCCOR Corrects phases using PCAL tones data from PC table PCEDT Interactive TV task to edit pulse-cal (PC) tables PCFIT Finds delays and phases using a pulse-cal (PC) table PCFLG interactive flagging of Pulse-cal data in channel-TB using the TV PCPLT Plots pulse-cal tables in 2 dimensions as function of time PCVEL shifts spectral-line UV data to a given velocity: planet version PEELR calibrates interfering sources in multi-facet imges PHASE Baseline Phase coherence measurement PHNEG Negates a UV datafile's visibility phase. PHSLIMIT gives a phase value in degrees PHSRF Perform phase-referencing within a spectral line database. POSSM Task to plot total and cross-power spectra. PRTAN prints the contents of the ANtenna extension file PRTUV prints contents of a visibility (UV) data set QCREATE adverb controlling the way large files are created QUACK Flags beginning or end portions of UV-data scans QUAL Source qualifier QUFIX determines Right minus Left phase difference, corrects cal files QUIT procedure to TELL FILLM to stop at the end of the current scan QUOUT writes text file of Q, U versus frequency to be used by RLDIF READISK writes images / uv data w extensions to tape in FITS format REAMP modifies UV data re-scaling the amplitudes REFDATE To specify the initial or reference date of a data set REFLG Attempts to compress a flag table REIFS Breaks spectral windows into multiple spectral windows (IFs) RESEQ Renumber antennas REWAY computes weights based in rms in spectra REWEIGHT Reweighting factors for UV data weights. REWGT modifies UV data re-scaling the weights only RFLAG Flags data set based on time and freq rms in fringe visibilities RLCAL Determines instrumental right-left phase versus time (a self-cal) RLCOR corrects a data set for R-L phase differences RLDIF determines Right minus Left phase difference, corrects cal files ROBUST Uniform weighting "robustness" parameter SBCOR Task to correct VLBA data for phase shift between USB & LSB SDLSF least squares fit to channels and subtracts from SD uv data SDMOD modifies single-dish UV data with model sources SDVEL shifts spectral-line single-dish data to a given velocity SETAN Reads an ANtenna file info from a text file SHADO Calculate the shadowing of antennas at the array SHOUV displays uv data in various ways. SMOOTH Specifies spectral smoothing SNEDT Interactive SN/CL/TY/SY table editor using the TV SNFIT Fits parabola to SN amplitudes and plots result SNFLG Writes flagging info based on the contents of SN files SNIFS Plots selected contents of SN, TY, SY, PC or CL files SNPLT Plots selected contents of SN, SY, TY, PC or CL files SNREF Chooses best reference antenna to minimize R-L differences SORT Specified desired sort order SOUSP fits source spectral index from SU table or adverbs SPCAL Determines instrumental polzn. for spec. line UV data SPECR Spectral regridding task for UV data SPFLG interactive flagging of UV data in channel-TB using the TV SPLAT Applies calibration and splits or assemble selected sources. SPLIT converts multi-source to single-source UV files w calibration SPMOD Modify UV database by adding a model with spectral lines STOKES Stokes parameter STOP procedure to TELL FILLM to break all current uv files and stop STUFFR averages together data sets in hour angle SUFIX modifies source numbers on uv data SWAPR modifies UV data by swapping real and imaginary parts SWPOL Swap polarizations in a UV data base TBAVG Time averages data combining all baselines. TELFLM procedure to TELL real-time FILLM a new APARM(1) value TFILE sorts and edits MkIII correlator UNIX-based A-file. TI2HA modifies times in UV data to hour angles TIORD checks data for time baseline ordering, displays failures TRUEP determines true antenna polarization from special data sets TVFLG interactive flagging of UV data using the TV U2CAT list a user's UV and scratch files on disk IN2DISK U3CAT list a user's UV and scratch files on disk IN3DISK U4CAT list a user's UV and scratch files on disk IN4DISK U5CAT list a user's UV and scratch files on disk IN5DISK UBAVG Baseline dependent time averaging of uv data UCAT list a user's UV and scratch files on disk INDISK UFLAG Plots and edits data using a uv-plane grid and the TV UJOIN modifies UV data converting IFs to spectral channels UOCAT list a user's UV and scratch files on disk OUTDISK USUBA Assign subarrays within a uv-data file UV1TYPE Convolving function type 1, pillbox or square wave UV2MS Append single-source file to multi-source file. UV2TB Converts UV autocorrelation spectra to tables UV2TYPE Convolving function type 2, exponential function UV3TYPE Convolving function type 3, sinc function UV4TYPE Convolving function type 4, exponent times sinc function UV5TYPE Convolving function type 5, spheroidal function UV6TYPE Convolving function type 6, exponent times BessJ1(x) / x UVADC Fourier transforms and corrects a model and adds to uv data. UVAVG Average or merge a sorted (BT, TB) uv database UVBAS averages several channels and subtracts from uv data. UVBOX radius of the smoothing box used for uniform weighting UVBXFN type of function used when counting for uniform weighting UVCMP Convert a UV database to or from compressed format UVCON Generate sample UV coverage given a user defined array layout UVCOP Task to copy a subset of a UV data file UVCOPPRM Parameter adverb array for task UVCOP UVCRS Finds the crossing points of UV-ellipses. UVDEC Decrements the number of spectral channels, keeping every nth UVDGP Copy a UV data file, deleting a portion of it UVDI1 Subtract UV data(averaged up to one time) from the other UV data UVDIF prints differences between two UV data sets UVFIL Create, fill a uv database from user supplied information UVFIT Fits source models to uv data. UVFIX Recomputes u,v,w for a uv database UVFIXPRM Parameter adverb array for task UVFIX UVFLG Flags UV-data UVFND prints selected data from UV data set to search for problems UVFRE Makes one data set have the spectral structure of another UVGIT Fits source models to uv data. UVGLU Glues UV data frequency blocks back together UVHGM Plots statistics of uv data files as histogram. UVHIM Makes image of the histogram on two user-chosen axes UVHOL prints holography data from a UV data base with calibration UVIMG Grid UV data into an "image" UVLIN Fits and removes continuum visibility spectrum, also can flag UVLOD Read export or FITS data from a tape or disk UVLSD least squares fit to channels and divides the uv data. UVLSF least squares fit to channels and subtracts from uv data. UVMLN edits data based on the rms of the spectrum UVMOD Modify UV database by adding a model incl spectral index UVMTH Averages one data set and applied it to another. UVNOU flags uv samples near the U,V axes to reduce interference UVPLT plots data from a UV data base UVPOL modifies UV data to make complex image and beam UVPRM measures parameters from a UV data base UVPRT prints data from a UV data base with calibration UVRANGE Specify range of projected baselines UVRFI Mitigate RFI by Fourier transform or fitting the circle UVSEN Determine RMS sidelobe level and brightness sensitivity UVSIM Generate sample UV coverage given a user defined array layout UVSIZE specifies number of pixels on X and Y axes of a UV image UVSRT Sort a UV dataset into a specified order UVSUB Subtracts/divides a model from/into a uv data base UVTAPER Widths in U and V of gaussian weighting taper function UVWAX flags uv samples near the U,V axes to reduce interference UVWTFN Specify weighting function, Uniform or Natural VBGLU Glues together data from multiple passes thru the VLBA corr. VECTOR selects method of averaging UV data VLA puts the list of VLA antennas in the current file on stack VLBA puts the list of VLBA antennas in the current file on stack VLBIN Task to read VLBI data from an NRAO/MPI MkII correlator VPFLG Resets flagging to all or all corss-hand whenever some are flagged VPLOT plots uv data and model from CC file VTEST Measures velocity discrepancy across fields WEIGHTIT Controls modification of weights before gain/fringe solutions WETHR Plots selected contents of WX tables, flags data based on WX WIPER plots and edits data from a UV data base using the TV WRTDISK writes images / uv data w extensions to tape in FITS format WRTPROCS Procedures to simplify the reduction of VLBA data WTMOD modifies weights in a UV data set WTUV Specifies the weight to use for UV data outside UVRANGE ZEROSP Specify how to include zero spacing fluxes in FT of UV data