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Running ORACDR with IRCAM/TUFTI
Automatic Pipeline Data ReductionSelecting a RecipeUse the ORAC Observing Tool (OT) to select your data reduction recipe. This will set the recipe name in the image header so that the pipeline knows how to manipulate the data. Be careful to select a recipe appropriate for the acquisition sequence e.g. sets of 4 offsets for the Nod4 recipe etc. Also, for the pipeline to work, ensure that you take any calibration frames required by the recipe before you take the science frames. Please refer to ORACDR Recipes to see what each recipe requires.
Select a recipe using
ORACDR RunupORACDR must be run from a UNIX machine. At the summit this will usually be Kauwa. To specify which instrument you are using type oracdr_ircamData is expected to have the current UT date as a prefix, and be in the UT-appropriate summit data directories. To specify other dates and directories see the following section. To set ORACDR into a loop where it recognises that new data has come in, reduces it according to the recipe name in the header, and displays the images, type oracdr -loop flag &The ampersand is only to allow you use of the xterm after issuing the command. Note loop mode is different for IRCAM/TUFTI pre- and post-ORAC. There is now a flag identifying new data. New windows will come up on your screen, an ORACDR status window, and a GAIA display. Warning messages are informational only. If there is a fatal error such as lack of a suitable calibration frame ORACDR will exit, with an error message (such data can be subsequently reduced using the explicit commands shown below). If no data comes in for an hour ORACDR will also exit. To restart ORACDR in loop mode from for example observation number 204, type oracdr -loop flag -from 204 &To abort ORACDR type cntrl-c in the xterm, or close the status window.
Selective Data Reduction and Other Useful Features
oracdr -list 1:8 &At the telescope for example this will reduce the array tests (observations 1 to 8) and allow you to delay starting ORACDR in loop mode until you're ready to observe.
oracdr JITTER9_SELF_FLAT -list 10:18,20:28 &will tell ORACDR to use JITTER9_SELF_FLAT to reduce observation numbers 10 to 18 and 20 to 28, instead of whatever recipe was in the header.
oracdr -list 21:25 -cal dark=dark_9 &will allow you to use a different dark from the default (taken closest in time) avoiding for example using a dark with a persistence stain. Pointing to a specific flat can also be useful.
oracdr -list 21:25 -nodisplay &This can simplify your desktop if you're doing something routine, or re-reducing data that you do not need to see again.
oracdr -loop flag -from 204 &
Reducing Data in a Non-Standard Data Directory
oracdr_ircam 20000101 setenv ORAC_DATA_IN /local/ukirt/tempdata/skl/20000101/raw/ setenv ORAC_DATA_OUT /local/ukirt/tempdata/skl/20000101/reduced/ oracdr -list 1:999 ....
setenv ORAC_DATA_ROOT /export/data/skl/
Help InformationHelp can be obtained by typing oracdr_ircam oracdr -hMore detailed help is available on individual recipes by typing for example oracdr_ircam oracman NOD4_SELF_FLAT_NO_MASK
Speed IssuesThe data reduction recipes can be cpu-intensive. Use the sub-array where possible. The _NO_MASK options are faster and the _BASIC faster still. If you are using the full array and need your reduced mosaics coming in in almost real-time you will need to use the _BASIC recipes. It will help if you use a different machine for things like Netscape, email, etc.
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, the DR component editor.
A screen will be displayed as shown in the following image. Use the scroll
bar (when running in the OT) to see the entire list. If you wish
to change the recipe, highlight the one you want and click on the object
" set " button. You do not normally need to change the other settings.
