[daip] Re: aips-data uploading from a tape
Eric Greisen
egreisen at cv3.cv.nrao.edu
Mon Dec 3 15:21:25 EST 2001
Hiroko Shinnaga writes:
A general remark. You seem not to have read the AIPS CookBook. This
is available to you (the files are in $AIPSPUBL as COOKn.PS where n is
the chapter number) or from the web:
http://www.cv.nrao.edu/aips/cook.html
The CookBook tells you how to use AIPS and tells you how to load data.
> Using 'prttp', I could check all the list on the tape and
> looks OK. So, in principal, I should be able to read the
> data from the file.
You do not show me the output of PRTTP so there are a lot of things I
do not know - such as is the data in the format for FILLM, how many
tape files does it use, what time range is involved, etc
> When I try to read it through 'fillm' just after I run aips
> and do 'mount', the message window says
>
>
> ula.sm> FILLM1: Task FILLM (release of 31DEC01) begins
> ula.sm> FILLM1: UV data will be written in compressed format
> ula.sm> FILLM1: Shadow flag limit = 2.500E+01 meters.
> ula.sm> FILLM1: No data found meeting selection criteria!
> ula.sm> FILLM1: Read 0 visibilities from 1 files
> ula.sm> FILLM1: Appears to have ended successfully
>
> I set all the nessesary parameter for the FILLM as follows;
>
> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
> >inp
> AIPS 1: FILLM Task to read a VLA archive tape
> AIPS 1: Adverbs Values Comments
> AIPS 1: ----------------------------------------------------------------
>
> AIPS 1: INTAPE 1 Tape drive number
> AIPS 1: NFILES 0 Number of files to advance
> AIPS 1: BAND ' ' Freq. band (4,P,L,C,X,U,K,Q)
> AIPS 1: QUAL -1 Source qualifier -1=>all
> AIPS 1: CALCODE ' ' Calibrator code
> AIPS 1: VLAOBS 'AS707 ' VLA obs. pgm. name ('AZ99')
> AIPS 1: VLAMODE ' ' VLA obs. mode (' '=any)
> AIPS 1: REFDATE '20010316' Reference date. 'yyyymmdd'
This normally does not need to be set and may be the cause of
your problem. This refdate plus the times below (also not normally
set) may be wrong for your data by 1 day.
> AIPS 1: TIMERANG 0 23 Timerange selected
> AIPS 1: 34 30 1 4
> AIPS 1: 32 20
> AIPS 1: BCHAN 1 First spectral channel
> AIPS 1: ECHAN 0 Highest spectral channel
> AIPS 1: OUTNAME ' ' Output UV file name (name)
> AIPS 1: OUTSEQ 0 Output UV file name (seq. #)
> AIPS 1: OUTDISK 1 Output UV file disk unit #.
> AIPS 1: DOUVCOMP 1 1 (T) => compressed data
> AIPS 1: DOALL 1 1 (T) => write all data.
> AIPS 1: DOCONCAT -1 1 (T) => append data to old
> AIPS 1: files
> AIPS 1: NCOUNT 1 Number of files to read
It never hurts to ask for more than 1 file. Often the first
file is a tape label and has no data (this can be seen from PRTTP)
> AIPS 1: DOWEIGHT 1 Use nominal sensitivity to
> AIPS 1: scale weights?
> AIPS 1: DOACOR 1 Load autocorrelation data?
> AIPS 1: CPARM *all 0 User options.
> AIPS 1: 1 => Avg. time (seconds)
> AIPS 1: 2 => bitmap (see help)
> AIPS 1: = 16 for planets & Sun
> AIPS 1: 3 => Max. OK IF status
> AIPS 1: <=3 => 3
> AIPS 1: 4 => Control dropping of
> AIPS 1: shadowed data
> AIPS 1: < 0 => no shadow check
> AIPS 1: 0 => 25 m limit
> AIPS 1: > 0 => Shadow limit is
> AIPS 1: CPARM(4) in meters
>
> AIPS 1: 5 = channel code (see HELP)
> AIPS 1: 6 => Subarray number-see HELP
>
> AIPS 1: 7 => FQ entry tolerance (kHz)
>
> AIPS 1: (see HELP)
> AIPS 1: 8 => CL table time incr. min
> AIPS 1: 9 => TY table time incr. min
> AIPS 1: 10=> Calibrator avg. time
> AIPS 1: DPARM *all 0 Selection by Frequency
> AIPS 1: 1+2 => A Frequency (Hz)
> AIPS 1: 3+4 => B Frequency (Hz)
> AIPS 1: 5+6 => C Frequency (Hz)
> AIPS 1: ** press RETURN for more, enter Q or next line to quit print **
> #
> AIPS 1: 7+8 => D Frequency (Hz)
> AIPS 1: 9 => tolerance for A&C
> AIPS 1: 10 => tolerance for B&D
> AIPS 1: BPARM *all 0 Opacity and Gain curve
> AIPS 1: control (see help)
> AIPS 1: INFILE ' '
> AIPS 1: Antenna gains file
> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
>
> Since I cannot get any file, I made the 'fillm' command
> with the same parameters again. This time, always takes much
> more time to get finished than the first time. Then, I get the
> same message again, as follows.
This clearly suggests that you have several files of data on the
tape.
>
> ula.sm> FILLM1: ula 31DEC01 TST: Cpu= 0.0 Real= 8
> ula.sm> FILLM1: Task FILLM (release of 31DEC01) begins
> ula.sm> FILLM1: UV data will be written in compressed format
> ula.sm> FILLM1: Shadow flag limit = 2.500E+01 meters.
> ula.sm> FILLM1: No data found meeting selection criteria!
> ula.sm> FILLM1: Read 0 visibilities from 1 files
> ula.sm> FILLM1: Appears to have ended successfully
>
> Could you please let me know how I can upload the files
> from the tape? If you know any checking points, please
> let me know.
>
> As I wrote down in my previous mail, I also have *.CHO files etc...
> downloaded from socorro site. Although I put those data in a proper
> dir for AIPS, aips cannot recognize the data at all.
You did not say how you did this. If you would glance at the
CookBook you would see that you read the tape with aips programs like
FITLD. You do not "dd" the data from tape directly into the data
area.
>
> I'm a bit worry about AIPS user ID. I'm using an ID number 1.
> However, I didn't set anythig special for assigning it in any file.
> Should I assign those ID number in any special file? If so, please
> let me know.
I would use any number but 1 to avoid having to type the
password all the time. It is not necessary to enter the number
anywhere. The $NET0/NETSP file allows you to restrict a disk data
area to specific user numbers but, since you are on your own
computer, that is really not needed.
Eric Greisen
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