AIPS HELP file for BADDISK in 31DEC24
As of Sun Apr 28 11:07:42 2024
HELP SECTION
BADDISK
Type: Adverb (Real(10))
Use: An adverb which contains a sequence of up to ten disk drive #'s
which cannot be used for temporary (scratch) files during
execution. The location of catalog files are not affected by this
adverb since the user has full control of these disk drives.
Null value: Usually 0.
Null value means that all disk drives are working and may
be used for scratch files. This state does occasionally
happen.
Verbs:
OBITIMAG......Access to OBIT task Imager without self-cal or peeling.
OBITMAP.......Simplified access to OBIT task Imager.
OBITPEEL......Access to OBIT task Imager with self-cal and peeling.
OBITSCAL......Access to OBIT task Imager with self-cal, NOT peeling.
Procedures:
BLPOLCAL......Do BLCHN for I, Q, U, V models
CRSFRING......Procedure to calibrate cross pol. delay and phase
offsets.
CXIMAGR.......Grid UV data into a complex image, Fourier transform,
Clean.
CXPOLN........Procedure to make complex polarization images and beam.
DDT...........Previous verion of Y2K to test performance and
correctness of code.
DOOSRO........Calibrating amplitude and phase, and imaging VLA data.
IMFRING.......Large image delay fitting with IM2CC and OOFRING.
IMSCAL........Large image self-cal with IM2CC and OOCAL.
LINIMAGE......Build image cube from multi-IF data set.
MAPPR.........Simplified access to IMAGR.
MERGECAL......Procedure to merge calibration records after
concatenation.
OOCAL.........Determines antenna complex gain with frequency-dependent
models.
OOFRING.......Fringe fit data to determine calibration with spectral
index options.
PEELR.........Calibrates interfering sources in multi-facet imges.
PIPEAIPS......Calibrating amplitude and phase, and imaging VLA data.
STUFFR........Averages together data sets in hour angle.
VLACLCAL......Runs CLCAL and prints the results with LISTR.
VLARUN........Calibrating amplitude and phase, and imaging VLA data.
VLBAAMP.......Applies a-priori amplitude corrections to VLBA data.
VLBACALA......Applies a-priori amplitude corrections to VLBA data.
VLBACPOL......Procedure to calibrate cross-polarization delays.
VLBAFRGP......Fringe fit phase referenced data and apply calibration.
VLBAFRNG......Fringe fit data and apply calibration.
VLBAIT........Procedure to read and process VLBA data.
VLBAKRGP......Fringe fit phase referenced data and apply calibration.
VLBAKRNG......Fringe fit data and apply calibration.
VLBAMCAL......Merges redundant calibration data.
VLBAMPHC......Applies VLBARUN calibration to additional phase stopping
centers.
VLBAPANG......Corrects for parallactic angle.
VLBARFI.......Calibrates VLBA autocorrelations, writes out statistics
VLBARUN.......Applies amplitude and phase calibration procs to VLBA
data.
Y2K...........Verifies correctness and performance using standard
problems.
Y2KSAVE.......Verifies correctness and performance using standard
problems.
Tasks:
ACCOR.........Corrects cross amplitudes using auto correlation
measurements.
ACFIT.........Determine antenna gains from autocorrelations.
ACIMG.........Makes image of autocorrelation data showing time vs
frequency
ACLIP.........Edits suto-corr data for amplitudes, phases, and weights
out of range.
ACSCL.........Corrects cross amplitudes using auto correlation
measurements.
AGAUS.........Fits 1-dimensional Gaussians to absorption-line spectra.
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.
ANCAL.........Places antenna-based Tsys and gain corrections in CL
table.
APCLN.........Deconvolves images with CLEAN algorithm.
APGS..........Deconvolves image with Gerchberg-Saxton algorithm.
APVC..........Deconvolves images with van Cittert algorithm.
ATMCA.........Determines delay/phase gradient from calibrator
observations.
AVGWT.........Computes the average visibility weight of the included
data.
AVSPC.........Averages uv-data in the frequency domain.
BLAPP.........Applies baseline-based fringe solutions a la BLAPP.
BLAVG.........Average cross-polarized UV data over baselines.
BLCAL.........Compute closure offset corrections.
BLCHN.........Compute closure offset corrections on a
channel-by-channel basis.
BLING.........Find residual rate and delay on individual baselines.
BLPCL.........Do divide by I,Q,U models for circular polarization
BLCHN.
BLSUM.........Sums images over irregular sub-images, displays spectra.
BPASS.........Computes spectral bandpass correction table.
BPCOR.........Correct BP table.
BPEDT.........Interactive TV task to edit uv data based on BP tables.
BPEPL.........Plots bandpass tables overlaying multiple times like
BPEDT.
BPFLG.........Flgas uv data based on bad BP values.
BPWAY.........Determines channel-dependent relative weights.
BPWGT.........Calibrates data and scales weights by bandpass
correction.
BSCAN.........Seeks best scan to use for phase cal, fringe search, ..
BSGRD.........Task to image beam-switched single-dish data.
CALIB.........Determines antenna calibration: complex gain.
CAPLT.........Plots closure amplitude and model from CC file.
CCMRG.........Sums all clean components at the same pixel.
CL2HF.........Convert CL table to HF table.
CLCAL.........Merges and smooths SN tables, applies them to CL tables.
CLCOR.........Applies user-selected corrections to the calibration CL
table.
CLIP..........Edits data based on amplitudes, phases, and weights out
of range.
CLOSE.........Plots closure phase or amplitude spectra averaged over
closures.
CLPLT.........Plots closure phase and model from CC file.
CLSMO.........Smooths a calibration CL table.
COHER.........Baseline Phase coherence measurement.
CONVL.........Convolves an image with a gaussian or another image.
CORER.........Calculates correlator statistics and flags bad ones.
CPASS.........Computes polynomial spectral bandpass correction table.
CSCOR.........Applies specified corrections to CS tables.
CVEL..........Shifts spectral-line UV data to a given velocity.
CXCLN.........Complex Hogbom CLEAN.
DCONV.........Deconvolves a gaussian from an image.
DECOR.........Measures the decorrelation between channels and IF of uv
data.
DEFLG.........Edits data based on decorrelation over channels and time.
DELZN.........Determines residual atmosphere depth at zenith and clock
errors.
DFCOR.........Applies user-selected corrections to the calibration CL
table.
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.
DISKU.........Shows disk use by one or all users.
DT2PD.........Write PD table from a PD table text file.
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.
ELINT.........Determines and removes gain dependence on elevation.
EVAUV.........Subtracts & divides a model into UV data, does statistics
on results.
FFT...........Takes Fourier Transform of an image or images.
FGCNT.........Counts samples comparing two flag tables.
FGDIF.........Compares affect of 2 FG tables.
FGSPW.........Flags bad spectral windows.
FINDR.........Find normal values for a uv data set.
FIXAL.........Least squares fit aliasing function and remove.
FIXWT.........Modify weights to reflect amplitude scatter of data.
FLAGR.........Edit data based on internal RMS, amplitudes, weights.
FLATN.........Re-grid multiple fields into one image incl sensitivity.
FLGIT.........Flags data based on the rms of the spectrum.
FLOPM.........Reverses the spectral order of UV data, can fix VLA
error.
FRCAL.........Faraday rotation self calibration task.
FRING.........Fringe fit data to determine antenna calibration, delay,
rate.
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.
HOLIS.........Prints information about holography sampling.
IBLED.........Interactive BaseLine based visibility EDitor.
IM2UV.........Converts an image to a visibility data set.
IMAGR.........Wide-field and/or wide-frequency Cleaning / imaging task.
IMERG.........Merges images of different spatial resolutions.
IMLIN.........Fits and removes continuum emission from cube.
KRING.........Fringe fit data to determine antenna calibration, delay,
rate.
LISTR.........Prints contents of UV data sets and assoc. calibration
tables.
LISUN.........Prints contents of UV data sets with Sun angles.
LOCIT.........Fits antenna locations from SN-table data.
LPCAL.........Determines instrumental polarization for UV data.
LTESS.........Makes mosaic images by linear combination.
MAPBM.........Map VLA beam polarization.
MULIF.........Change number of IFs in output.
NOIFS.........Makes all IFs into single spectrum.
OBEDT.........Task to flag data of orbiting antennas.
OFLAG.........Uses on-line flag table information to write a flag
table.
OMFIT.........Fits sources and, optionally, a self-cal model to uv
data.
OOSRT.........Sort a UV dataset into a specified order.
OOSUB.........Subtracts/divides a model from/into a uv data base.
PBEAM.........Fits the analytic function to the measured values of the
beam.
PCAL..........Determines instrumental polarization for UV data.
PCABL.........Copies the Cable cal values from PC table 1 to PC table n
PCASS.........Finds amplitude bandpass shape from pulse-cal table data.
PCAVG.........Averages pulse-cal (PC) tables over time.
PCDIV.........Scales pulse-cal amplitudes by Tsys or Psum
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.
PCLOD.........Reads ascii file containing pulse-cal info to PC table.
PCPLT.........Plots pulse-cal tables in 2 dimensions as function of
time.
PCRMS.........Finds statistics of a pulse-cal table; flags bad times
and channels.
PCVEL.........Shifts spectral-line UV data to a given velocity: planet
version.
PDEDT.........Interactive TV task to edit polarization D-term (PD)
tables.
PHASE.........Baseline Phase coherence measurement.
PHSRF.........Perform phase-referencing within a spectral line
database.
PLRFI.........Plots spectral statistics from output of VBRFI & VLBRF
POLCO.........Task to correct polarization maps for Ricean bias.
POSSM.........Task to plot total and cross-power spectra.
PRTSD.........Prints contents of AIPS single-dish data sets.
PRTSY.........Task to print statistics from the SY table.
QUACK.........Flags beginning or end portions of UV-data scans.
REFLG.........Attempts to compress a flag table.
REWAY.........Computes weights based in rms in spectra.
RFI...........Look for RFI in uv data.
RFLAG.........Flags data set based on time and freq rms in fringe
visibilities.
RIRMS.........Computes rms of real/imag of a selected subset of a uv
data set
RLCAL.........Determines instrumental right-left phase versus time (a
self-cal).
RLDIF.........Determines Right minus Left phase difference, corrects
cal files.
RLDLY.........Fringe fit data to determine antenna R-L delay
difference.
RMFIT.........Fits 1-dimensional polarization spectrum to Q/U cube.
RSTOR.........Restores a Clean component file to a map with a Gaussian
beam.
SABOX.........Create box file from source islands in facet images.
SCIMG.........Full-featured imaging plus self-calibration loop with
editing.
SCMAP.........Imaging plus self-calibration loop with editing.
SDCAL.........Task to apply single dish calibration.
SDCLN.........Deconvolves image by Clark and then "SDI" cleaning
methods.
SDGRD.........Task to select and image random-position single-dish
data.
SDIMG.........Task to select and image random-position single-dish
data.
SDVEL.........Shifts spectral-line single-dish data to a given
velocity.
SERCH.........Finds line signals in transposed data cube.
SHOUV.........Displays uv data in various ways.
SNCOR.........Applies user-selected corrections to the calibration SN
table.
SNEDT.........Interactive SN/CL/TY/SY table editor using the TV.
SNFLG.........Writes flagging info based on the contents of SN files.
SNSMO.........Smooths and filters a calibration SN table.
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.
SPIXR.........Fits spectral indexes to each row of an image incl
curvature.
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.
SPRMS.........Plots spectral statistics of a selected subset of a uv
data set.
STEER.........Task which deconvolves the David Steer way.
STESS.........Task which finds sensitivity in mosaicing.
SUFIX.........Modifies source numbers on uv data.
SUMIM.........Task to sum overlapping, sequentially-numbered images.
SUMSQ.........Task to sum the squared pixel values of overlapping,.
SWAPR.........Modifies UV data by swapping real and imaginary parts.
SYPRT.........Task to print values from the SY table.
SYSOL.........Undoes and re-does nominal sensitivity application for
Solar data.
TACOP.........Task to copy tables, other extension files.
TAMRG.........Task to merge table rows under specified conditions.
TAPPE.........Task to append 2 tables and merge to output table.
TASRT.........Task to sort extension tables.
TBDIF.........Compare entries in two tables.
TI2HA.........Modifies times in UV data to hour angles.
TIORD.........Checks data for time baseline ordering, displays
failures.
TRANS.........Task to transpose a subimage of an up to 7-dim. image.
TRUEP.........Determines true antenna polarization from special data
sets.
TVFLG.........Interactive flagging of UV data using the TV.
TYAPL.........Undoes and re-does nominal sensitivity application.
TYSMO.........Smooths and filters a calibration TY or SY table.
UBAVG.........Baseline dependent time averaging of uv data.
UFLAG.........Plots and edits data using a uv-plane grid and the TV.
UTESS.........Deconvolves images by maximizing emptiness.
UV2MS.........Append single-source file to multi-source file.
UV2TB.........Converts UV autocorrelation spectra to tables.
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.
UVCOP.........Task to copy a subset of a UV data file.
UVFIT.........Fits source models to 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.
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.
UVLSD.........Least squares fit to channels and divides the uv data.
UVLSF.........Least squares fit to channels and subtracts from uv data.
UVMAP.........Makes images from calibrated 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.
UVPLT.........Plots data from a UV data base in multiple ways.
UVPRM.........Measures parameters from a UV data base.
UVPRT.........Prints data from a UV data base with calibration.
UVRFI.........Mitigate RFI by Fourier transform or fitting the circle.
UVRMS.........Computes statistics of a selected subset of a uv data
set.
UVSRT.........Sort a UV dataset into a specified order.
UVSUB.........Subtracts/divides a model from/into a uv data base.
VBRFI.........Plots spectral statistics of VLBA autocorrelation data
for RFI.
VH2RL.........Converts from linear to circular polarization and vice
versa.
VLABP.........VLA antenna beam polarization correction for snapshot
images.
VLAMP.........Makes ANTAB file for phased VLA used in VLBI
observations.
VLBCD.........Reads ascii file containing VLBA calibration info into
a CD table
VLBRF.........Plots spectral statistics of VLBA autocorrelation data
for RFI.
VLBSY.........Reads ascii file containing VLBA total power info into
an SY table
VPLOT.........Plots uv data and model from CC file.
VTESS.........Deconvolves sets of images by the Maximum Entropy Method.
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.
XBASL.........Fits and subtracts nth-order baselines from cube (x
axis).
XGAUS.........Fits 1-dimensional Gaussians to images: restartable.
XMOM..........Fits one-dimensional moments to each row of an image.
XYDIF.........Find/apply X minus Y linear polarization phase
difference.
XYMOD.........Compute linear polarization point source model, applies
to data.
ZAMAN.........Fits 1-dimensional Zeeman model to absorption-line data.
ZEMAN.........Fits 1-dimensional Zeeman model to data.
EXPLAIN SECTION