In the past we ran a program called stripshooter which captured StripTool images and posted them to the CDS web page. This could not back-fill its data and so could not practically be used to trend months of data.
I have now written its ndscope equivalent, ndshooter. For each YAML file in the userapps/cds/h1/ndshooter directory, the program runs ndscope to a virtual frame buffer and displays the minute trend plot for the look back time specified in the yaml file (minimum of 1 week).
Chandra has requested this system trend certain critical vacuum channels. The attachments below show the trends for the vacuum pressure gauges and LN2 levels.
The vacuum pressure plots show 1 month and 3 month trends for certain LVEA, X-ARM and Y-ARM gauges.
The liquid nitrogen level plots show 1 week and 1 month trends for the cryopumps and external dewars (except CP4).
If other CDS channels should be trended in this way, please send me an email and I can add them to the system.
All of the current ndshooter trends are collated on the ndshooter.html web page (accessible from the LHO CDS main page). Currently only VAC and PEM-weather are being trended.