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auto analysis results auto analysis results (AAR) are the products from the auto-analysis processing glitch a glitch is a short duration anomaly in the datastream, usually caused by an ionizing particle. in-band power the power (in W) falling on the detector for a filter, aperture, and polariser combination measurement see definition section 3.3 preformance verification the performance verification (PV) phase comprises the first 80 days of the ISO mission and has been exclusively reserved for instruments check-out, calibrations, and AOT commissioning. product a product is a FITS file defined by the Science Operations Centre and contains the ISO data for official distribution. observation An observation refers to the acquisition of the scientifically useful data during one AOT by the prime instrument requested by the proposer. The term "observation" also loosely refers to the data products created from the acquired data. An observation has a one-to-one association with an ISO Observation Number (ION). ramp a ramp is formed by the read-outs collected during one and the same reset interval responsivity the detector responsivity (in A/W) is the ratio between electrical current through a detector and the illuminating power falling on the detector. standard processed data standard processed data (SPD) are the products from the standard processing, chapter 7 target dedicated time a target dedicated time (TDT) is the entire contiguous time period scheduled for performing the N observations of a concatenated group. (N = 1 if no concatenation). All overheads, including slewing, are included (TDT = observation time plus overheads time). The start of a TDT is defined as the time of the first AOCS command to point at the new target. The end of the TDT is defined as the time at which all instrument activities connected with the (N) observation(s) have been completed. Note that the above restrictions on concatenation imply that one TDT can belong to only one proposer.
ISOPHOT Data Users Manual, Version 4.1, SAI/95-220/Dc