Processing XRCF ACIS Data

PSU FITS Files

PSU provided data sets separated to TRW_ID and processed into FITS files with roughly Level 0 values. See the "Telemetry Data" link at PSU's XRCF web page

• The PSU fits files are in (at MIT) /nfs/opabinia/d5/PHASE_H_DATA/trw_ids/*/*/[filename is trw_id] and can be read into IDL with mrdfits.
• Timing Note about continuous clocking frames.

dd's Processing of these files

These PSU FITS files were processed by psu_view.pro to produce IDL save files containing Level_1-like quantities (DETX, DETY, ENERGY, GRADE, FLTGRADE). Further details are in the header of psu_view.pro.

• The ddIDL processed "Level 1" data are in /nfs/spectra/d6/ACIS_anal with a filename [trw_id]_l1.idlsav . An IDL restore on the file will produce a structure l1 which has the tags (l1.detx, l1.dety, etc.) as given above.

MARX Simulations of the Measurements

MARX simulations of the XRCF data are carried out using xrcf_sim.pro and marx_compare.pro .

• The simulation directories are (e.g., for iteration 0) /nfs/spectra/d6/MARX/[trw_id]/i0/ . These directories contain the IDL save files ml1.idlsav which when restored give the simulation "level 1" data: ml1.detx, ml1.dety, and ml1.energy.
• These directories have a file marx_commands: this lists all the changes to the nominal MARX file that are made to simulate the measurement and runs marx. It is 'sourced' by an IDL spawn.

Energy-color-coded Images

All of this benefits from color-coding events by their (ACIS derived) energies. The small event scatter plots in the web table are created in psu_view.pro and use a red to blue mapping to color code the events by their ACIS energy (dd_load_ct.pro). The larger color-coded images (data and simulation) are created using xye_image.pro (with lots of thanks to Dave H.). Because of ACIS's energy resolution color-coded intensity images are useful!