This is a personal note about PdBI/IRAM spectral data reduction. The steps will start from transfering the raw data to the local hard-drive, organizing raw data, calibration with to the further data reduction with procedure. The final stage will be mapping and aquring the spectra. If you have any questions or comments, please feeling free to contact me.
Now, let’s take a high-z observation project for example. Assuming we have observed a molecular line of a high-z galaxy in 2013. So our project name (starting from 2014, a new proposal system called PMS took over the old one, the project naming system has also been changed) would be:
W is 2012, V is for 2011 and X is for 2013, etc. I guess there’s a loop of the letters starts from a certain date; 0 is for the target index in this proposal, it could be WAB4, WBB4 and WCB4, …; B4 is the project index, 16th, hexadecimal.
And also we have an observation project name containing the data information, and it could be:
Just as the proposal project code X represents the year “2013″, C stands for December, hexadecimal form of month; 12: the date 12th.
Thus the raw data file of one observation will be like this:
XC12WAB4.IPB, XC12WAB4.OBS, XC12WAB4.RDI
for the source WAB4 observed on Dec 12th, 2013.
Then now we need to first download the data from IRAM data centre to the computers that we perform data reduction (usually at IRAM-HQ) by using:
getproj -p w0b4
The data will be downloaded on the ~/tmp/DATA directory.
You will need to create several directories for data calibration. Usually the calibration directory is under ~/calib, such as
$HOME/calib/w0b4/wab4 $HOME/calib/w0b4/wbb4 ...
After all these get ready, you can now move on to data calibration.