Custom Query (241 matches)

I am trying to edit bad data in ASAP. Some scans are bad, so I want to mask the entire scan. When I do this, and later time-average the data, ASAP crashes on me. Here is the script I use that will cause a crash:

s = scantable('2006-11-29_1258-M179.rpf')
q = s.auto_quotient()
q.set_unit('channel')
#
# DROP BAD SCANS
#
sel2 = selector()
sel2.set_scans([1])
q.set_selection(sel2)
msk1 = q.create_mask([0,8200])
q.flag(msk1)
#
#
#
av=q.average_time(weight='tsys')

ASAP will crash on the last line of this script (called fail.py), with the following:

ASAP>execfile('fail.py')
Auto averaging integrations
Importing 2006-11-29_1258-M179.rpf...
The current mask window unit is channel

/usr/bin/asap: line 54: 29374 Segmentation fault      $ip -ipythondir "${HOME}/.asap" -p 'asap' $*

Note that if I change the script so that channels 0 to 200 are masked (or indeed any number of channels != to all channels), ASAP will happily average scans.

I have also tried this on many files which contain more than two scans, with the same result.

Later. Andrew xxx

Hi As we are more familiar with CLASS software we intend to export the rpfits data via ASAP in a FITS format readable by CLASS. But the only format available is SDFITS which can't be read by CLASS. Having the possibility to export in a more common format like FITS would be very very useful (of course with all the header informations).

Moreover, the following informations are missing or impossible through ASAP:

• image band frequency
• RA/DEC of the source
• LST time

Thanks

If you have a scantable scans and you issue either the commands print scans scans.summmary() The coordinates come back in the form hh:mm:ss.s -dd.mm.ss.s i.e. the separator for the declination is a decimal point when it should be a : This is just a pain because you can't simply cut and paste these values into other programs as . is not a standard separator between degree and minutes or minutes and second in coordinate formats.