"z1" refers to which interferometer it is. And, uh, I can't for the life of me remember whether it's Hanford or Livingston! Most of them should be Hanford, since that was doing better during S4. Normally those are called H1 and L1, so why the funky name? It's basically because some machines would be running a mixture of "albert" and "einstein" workunits, and the filenames needed to be kept separate. If you recall, we got into some trouble with the first switchover because the filenames were not unique. "Once bitten, twice shy" as we say in English.
"z1" refers to which interferometer it is. And, uh, I can't for the life of me remember whether it's Hanford or Livingston! Most of them should be Hanford, since that was doing better during S4. Normally those are called H1 and L1, so why the funky name? It's basically because some machines would be running a mixture of "albert" and "einstein" workunits, and the filenames needed to be kept separate. If you recall, we got into some trouble with the first switchover because the filenames were not unique. "Once bitten, twice shy" as we say in English.
Hope this helps,
Ben
The z stands for "Zucker" (director of Livingston)
and r stands for "Raab" (director of Hanford)
We needed to keep the workunit names short so I had to be creative.
I notice that different WU's have a different behaviour - some of them have a "big step" in "stellar grid", but some of them - much smaller. Why? Different "precision" of analysis?
Hoarfrost, the workunits can have very different grid steps depending on the frequency of the data analyzed. At low frequencies the signal does not contain much information on the sky position, and so the grid step is very large. I think the lowest frequency is 50Hz and those work units only have a few hundred grid points. The highest is 1500Hz and those have a couple million.
I'm sorry to give you such vague numbers. My grad student, a former postdoc, and I did the calculations and wrote the code for those grids, but that was ages ago and my memory is pretty hazy.
Z Workunits
)
Hoarfrost,
"z1" refers to which interferometer it is. And, uh, I can't for the life of me remember whether it's Hanford or Livingston! Most of them should be Hanford, since that was doing better during S4. Normally those are called H1 and L1, so why the funky name? It's basically because some machines would be running a mixture of "albert" and "einstein" workunits, and the filenames needed to be kept separate. If you recall, we got into some trouble with the first switchover because the filenames were not unique. "Once bitten, twice shy" as we say in English.
Hope this helps,
Ben
RE: Hoarfrost, "z1" refers
)
The z stands for "Zucker" (director of Livingston)
and r stands for "Raab" (director of Hanford)
We needed to keep the workunit names short so I had to be creative.
RE: Hope this
)
Thank you Ben! Thank you David!
I notice that different WU's have a different behaviour - some of them have a "big step" in "stellar grid", but some of them - much smaller. Why? Different "precision" of analysis?
Thanks, David. Makes sense
)
Thanks, David. Makes sense about the names.
Hoarfrost, the workunits can have very different grid steps depending on the frequency of the data analyzed. At low frequencies the signal does not contain much information on the sky position, and so the grid step is very large. I think the lowest frequency is 50Hz and those work units only have a few hundred grid points. The highest is 1500Hz and those have a couple million.
I'm sorry to give you such vague numbers. My grad student, a former postdoc, and I did the calculations and wrote the code for those grids, but that was ages ago and my memory is pretty hazy.
Hope this helps,
Ben