J. Kissel for J. Batch, J. Hanks, and J. Zweizig
CDS Bugzilla Ticket #1072

The interferometer output that is used by astrophysical searches, GDS-CALIB_STRAIN and DCS_CALIB_STRAIN_${calversion} (when available) are now available via DTT, thanks to J. Batch, J. Hanks, and J. Zweizig.

I attach a screenshot of a random time in which the IFO was observing and I know DCS-CALIB_STRAIN_CO1 is available (Jan 12 2017 @ 12:00 UTC) for proof.

The update that was required to DTT is not yet a part of the default call, so here're the instructions to-date:
(1) In a terminal, source the needed newer version of gds package that has this update:
    ]$ source /ligo/apps/linux-x86_64/gds-2.17.9-2/etc/gds-user-env.sh
(2) Initialize your kerberos ticket so you can use NDS2:
    ]$ kinit
    Password for arbert.einstein@LIGO.ORG:
(3) Start DTT:
    ]$ diaggui &
(4) Under the input tab, select "NDS2", then click over to the "Measurement" tab. Be patient while the NDS2 channel list is downloaded into DTT. You can reduce this time a little bit by narrowing down the Epoch Start and Stop times.
(5) Select the channels from the drop-down menus. Note 
    (a) for GDS-CALIB_STRAIN and DCS-CALIB_STRAIN_${calversion} the time you're requesting *MUST* be in the past. 
    (b) If you're requesting DCS-CALIB_STRAIN_${calversion}, you should check whether the data has been generated yet (see status table on the JRPC wiki.ligo.org page), since this is done manually when the calibration group feels it has a new better product to release.
(6) To calibrate into displacement units, [m], here's the DTT calibration:
    CAL-DELTAL_EXTERNAL_DQ
        Gain: 1 
        Poles: 0.3, 0.3, 0.3, 0.3, 0.3, 0.3
        Zeros: 30, 30, 30, 30, 30, 30

    GDS-CALIB_STRAIN
        Gain: 3994.47
        Poles: (none)
        Zeros: (none)

    DCS-CALIB_STRAIN
        Gain: 3994.47
        Poles: (none)
        Zeros: (none)

If you want the time-dependent correction factors in the GDS-CALIB* or DCS-CALIB* family of channels, they can be found under the "H1 (slow)" folder, e.g. 
    H1:GDS-CALIB_KAPPA_C

Happy hunting!

"One small step for man, one giant leap for mankind..."