1 | #import genera operating system related functions |
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2 | import os |
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3 | #import asap module |
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4 | from asap import * |
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5 | # create a reader |
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6 | r = sdreader() |
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7 | # open an RPFITS file |
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8 | r.open('/u/mmarquar/zorro/singledish/data/2001-09-01_0332_P363.rpf') |
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9 | # create a vector with numbers [0..109] |
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10 | integrations = range(110) |
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11 | r.read(integrations) |
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12 | # get the data out of the reader |
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13 | scans = r.getdata() |
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14 | # close the reader |
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15 | r = None |
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16 | # Test sdwriter. |
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17 | print 'Writing ASAP table to disk as /tmp/test.tbl...' |
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18 | scans.makepersistent('/tmp/test.tbl') |
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19 | print "removing /tmp/test.tbl ..." |
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20 | os.remove('/tmp/test_SDWriter.sdfits') |
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21 | print 'Begin sdwriter tests...' |
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22 | # Create an MS2 writer. |
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23 | w = sdwriter('MS2') |
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24 | # Change to SDFITS output format (the default). |
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25 | w.setformat() |
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26 | # Write out the spectra. |
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27 | w.write(scans, '/tmp/test_SDWriter.sdfits') |
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28 | # clean up |
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29 | print "removing test_SDWriter.sdfits ..." |
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30 | os.remove('/tmp/test_SDWriter.sdfits') |
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31 | # print a short summary of the data |
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32 | scans.summary() |
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33 | # get the scan with the number '1' |
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34 | scan = scans.getscan(0) |
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35 | # get the scan with the number '1' |
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36 | ref = scans.getscan(1) |
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37 | # close the data table |
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38 | scans = None |
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39 | # open the math server |
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40 | # average the "on" scan |
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41 | scanav = average(scan) |
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42 | # get rid of the original scan |
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43 | scan = None |
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44 | # print a summary of the scan |
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45 | scanav.summary() |
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46 | # average the "off" scan |
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47 | refav = average(ref) |
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48 | # get rid of the original scan |
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49 | ref = None |
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50 | # print a summary of the scan |
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51 | refav.summary() |
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52 | # form the quotione spectrum |
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53 | quot = quotient(scanav,refav) |
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54 | # set the cursor to polarisation 0 |
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55 | quot.setpol(0) |
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56 | # get the spectrum for polarisation 0 |
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57 | v0 = quot.getspectrum() |
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58 | #print the first ten channel |
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59 | print v0[0:10] |
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60 | # set the cursor to polarisation 1 |
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61 | quot.setpol(1) |
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62 | # get the spectrum for polarisation 1 |
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63 | v1 = quot.getspectrum() |
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64 | #print the first ten channel |
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65 | print v1[0:10] |
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66 | # write it to disk for further use |
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67 | quot.makepersistent('/tmp/myfirstquotient.tbl') |
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68 | # cleanup |
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69 | print "removing /tmp/myfirstquotient.tbl ..." |
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70 | os.system('rm -rf /tmp/myfirstquotient.tbl') |
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71 | print "Test successful." |
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