MRO CRISM Ancillary Data (ANCILL)

Instrument: Compact Reconnaissance Imaging Spectrometer for Mars

PDS Data Set ID: MRO-M-CRISM-2-CDR-V1.0 (found in the CDR directories)

For more information about CRISM products, go to the CRISM Product Primer.

For more information about ANCILLs, see the CRISM Data Product SIS.

The Ancillary Data (ANCILL) products are Experimental Data Record (EDR) processing tables. They are an ASCII table of 6 columns, containing scene data and the corresponding EDRs containing time-dependent calibration measurements. ANCILL products are used to process scene EDRs to Targeted Reduced Data Records (TRDRs), and calibration EDRs to Calibration Data Records (CDRs). If there is a discrepancy between the actual and predicted EDRs used for calibration, the TRDRs resulting from scene EDRs are quality-flagged.

CRISM ANCILL products have the following file names:

ATF_cc_yyyy_ddd_vv.TAB (with detached PDS label)

where:

cc = sensor

VN = VNIR

IR = IR

yyyy = year

ddd = day of year

vv = version

In ODE, ANCILL VNIR products have the following Product IDs:

ATF_VN_YYYY_DDD_VV

In ODE, ANCILL IR products all have the following Product ID:

ATF_IR___YYYY_DDD___VV