Running qbd

1. Create demo data

Run the qbd command with the --create-demo-data flag to create the directory channels with FITS demo data.

qbd --create-demo-data
Writing file: channels/demo-channel-001.fits
Writing file: channels/demo-channel-002.fits
Writing file: channels/demo-channel-003.fits
Writing file: channels/demo-channel-006.fits
Writing file: channels/demo-channel-007.fits

2. Create input file list

Create a simple text file containing the filepaths to input the channel data.

find channels/*.fits > channel-list.txt

cat channel-list.txt
channels/demo-channel-001.fits
channels/demo-channel-002.fits
channels/demo-channel-003.fits
channels/demo-channel-006.fits
channels/demo-channel-007.fits

3. (Optional) Add empty channels

Add empty channels (filled with np.nan) by adding an empty lines in channel-list.txt:

cat channel-list.txt
channels/demo-channel-001.fits
channels/demo-channel-002.fits
channels/demo-channel-003.fits


channels/demo-channel-006.fits
channels/demo-channel-007.fits

4. Start cube creation

Start the data cube creation by calling the channel-list.txt with qbd.

qbd channel-list.txt
Creating empty cube: cube.fits
Processing channel 0/7: channels/demo-channel-001.fits
Processing channel 1/7: channels/demo-channel-002.fits
Processing channel 2/7: channels/demo-channel-003.fits
Processing channel 3/7: Empty channel. Setting NaN.
Processing channel 4/7: Empty channel. Setting NaN.
Processing channel 5/7: channels/demo-channel-006.fits
Processing channel 6/7: channels/demo-channel-007.fits
Cube filled: cube.fits