As the ERD is reformatted telemetry data, the different ERD products reflect the data structures related to the different PHT sub-systems: single pixel data (P1, P2, and P3), 9 pixel data (PHT-C100), 4 pixel data (PHT-C200) and 128 pixel data (PHT-S). Each ERD product is accompanied by one compact status product with product name prefix ``PSTA''. A compact status record defines the instrument configuration for one measurement. The structure of the compact status product is the same for all PHT subinstruments.

FIELD Off N T Description Comment GPSCTKEY 0 1 I*4 Instrument time key see IDPD, unit= 2^-14 s GPSCRPID 4 2 I*1 Raster point ID points and lines GPSCFILL 6 1 I*2 Filler empty PPERPIXF 8 1 I*2 Bit flags accompanying pixels appendix B.4 PPERPCS1 10 1 I*2 Power of calibration source1 appendix B.2 PPERPCS2 12 1 I*2 Power of calibration source2 appendix B.2 PPERFIL1 14 1 I*2 Spare PPERTEMP 16 1 I*2 Measured temperature P1, P2, or P3 appendix B.1 PPERFIL2 18 2 I*2 Spare PPERCPOS 22 1 I*2 Measured chopper position appendix B.3 PPERMBV 24 1 I*2 Measured bias voltage P1, P2, or P3 PPERPIX 26 1 I*2 IR data (1 pixel) 12 bits used see appendix B.2

12.2.3 Product P1ER

FIELD Off N T Description Comment GPSCTKEY 0 1 I*4 Instrument time key see IDPD, unit= 2^-14 s GPSCRPID 4 2 I*1 Raster point ID points and lines GPSCFILL 6 1 I*2 Filler P1ERPIXF 8 1 I*2 Bit flags accompanying pixels appendix B.4 P1ERPCS1 10 1 I*2 Power of calibration source1 appendix B.2 P1ERPCS2 12 1 I*2 Power of calibration source2 appendix B.2 P1ERCREV 14 1 I*2 Measured CRE checkout voltage see note below P1ERTEMP 16 1 I*2 Measured temperature C100 appendix B.1 P1ERFILL 18 2 I*2 Spare P1ERCPOS 22 1 I*2 Measured chopper position appendix B.3 P1ERMBV 24 1 I*2 Measured bias voltage C100 P1ERPIXR 26 1 I*2 IR data (resistor) see note below P1ERPIXO 28 1 I*2 IR data (open) P1ERPIX 30 9 I*2 IR data: 9 pixels for ordering see 3.4.2 12 bits used see appendix B.2

Note : The CRE checkout voltage is of no importance for the analysis of the IR data. It was a diagnosis DC voltage which was applied to the CRE resistor pixel for PHT-C and PHT-S and produced a kind of load curve at the output of the resistor pixel. This worked like a connection to a normal CRE channel of a detector pixel, however the resistance of this special channel was much smaller than the one of a high-ohmic detector pixel.

12.2.4 Product P2ER

FIELD Off N T Description Comment GPSCTKEY 0 1 I*4 Instrument time key see IDPD, unit= 2^-14 s GPSCRPID 4 2 I*1 Raster point ID points and lines GPSCFILL 6 1 I*2 Filler P2ERPIXF 8 1 I*2 Bit flags accompanying pixels appendix B.4 P2ERPCS1 10 1 I*2 Power of FCS 1 appendix B.2 P2ERPCS2 12 1 I*2 Power of FCS2 appendix B.2 P2ERCREV 14 1 I*2 Measured CRE checkout voltage cf. note 12.2.3 P2ERTEMP 16 1 I*2 Measured temperature C200 appendix B.1 P2ERFILL 18 2 I*2 Spare P2ERCPOS 22 1 I*2 Measured chopper position appendix B.3 P2ERMBV1 24 1 I*2 Measured bias voltage pixel1 see section 3.4.2- P2ERMBV2 26 1 I*2 Measured bias voltage pixel2 -for pixel position on- P2ERMBV3 28 1 I*2 Measured bias voltage pixel3 -sky P2ERMBV4 30 1 I*2 Measured bias voltage pixel4 P2ERPIX1 32 1 I*2 IR data (pixel 1) see section 3.4.2 - P2ERPIX2 34 1 I*2 IR data (pixel 2) -for pixel position on- P2ERPIX3 36 1 I*2 IR data (not used) -sky P2ERPIX4 38 1 I*2 IR data (pixel 3) - see - P2ERPIX5 40 1 I*2 IR data (pixel 4) - appendix B.2- P2ERPIX6 42 1 I*2 IR data (resistor) - for bit usage -

12.2.5 Product P2ES

PHT C200 Edited Raw Data for PHT serendipity mode
Record length: 44 bytes
Identical record structure as for product P2ER (section 12.2.4), the prefix P2ER should be replaced by P2ES.

12.2.6 Product PSER

FIELD Off N T Description Comment GPSCTKEY 0 1 I*4 Instrument time key see IDPD, unit= 2^-14 s GPSCRPID 4 2 I*1 Raster point ID points and lines GPSCFILL 6 1 I*2 Filler PSERPIXF 8 1 I*2 Bit flags accompanying pixels appendix B.4 PSERPCS1 10 1 I*2 Power of calibration source 1 no meaning, FCS - -always off in AOT PSERPCS2 12 1 I*2 Power of calibration source 2 no meaning, FCS - -always off in AOT PSERCREV 14 1 I*2 Measured CRE checkout voltage cf. note 12.2.3 PSERTEM1 16 1 I*2 Measured temperature S1(SL) appendix B.1 PSERTEM2 18 1 I*2 Measured temperature S2(SS) appendix B.1 PSERFILL 20 1 I*2 Spare PSERCPOS 22 1 I*2 Measured chopper position appendix B.3 PSERMBV1 24 1 I*2 Measured bias voltage S1(=SL) PSERMBV2 26 1 I*2 Measured bias voltage S2(=SS) PSERPIX1 28 66 I*2 IR data for SL branch includes 2 resistor pixels values 65 and 66 12 bits used - - appendix B.2 PSERPIX2 160 66 I*2 IR data for SS branch includes 2 resistor pixels values 65 and 66 12 bits used - - appendix B.2

12.2.7 Product PSTA

FIELD Off N T Description Comment CSGPUKST 0 1 I*4 UTK start time Universal Time Keys- CSGPUKEN 4 1 I*4 UTK end time - see ISDM [17] CSGPIKST 8 1 I*4 ITK start time CSGPIKEN 12 1 I*4 ITK end time CSGPUTST 16 2 I*4 UTC start time Universal Time- CSGPUTEN 24 2 I*4 UTC end time - Coordinated CSGPOSN 32 1 I*1 Observation Sequence Number also ION, as in PGA CSGPFILL 33 15 I*1 Spare PSTASPAR 48 1 I*4 Spare PSTASUBS 52 1 I*2 Subsystem PSTAOPFO 54 1 I*2 Chopper OPF Override PSTAF1TS 56 1 I*2 TRS(FCS1) value: 1 or 2 see 3.5 PSTAF2TS 58 1 I*2 TRS(FCS2) value: 1 or 2 PSTAF1PS 60 1 I*2 FCS1 power sel. in mW PSTAF2PS 62 1 I*2 FCS2 power sel. in mW PSTAC1PS 64 1 I*2 CHW1 position (selected) value: 1 - 14, see A.1 PSTAC2PS 66 1 I*2 CHW2 position (selected) idem PSTAC3PS 68 1 I*2 CHW3 position (selected) idem PSTACMOD 70 1 I*2 Chopper mode see Table 12.2 PSTACAMP 72 1 I*2 Chopper amplitude as commanded in arcsec PSTACSTE 74 1 I*2 Chopper step as commanded in arcsec PSTACINC 76 1 I*2 Chopper increment as commanded in arcsec PSTACRES 78 1 I*2 CRE switch PSTADETA 80 1 I*2 Detector assy detector assembly PSTADRS 82 1 I*2 Data reduction size integer, see 3.2.4 PSTAMUX1 84 1 I*2 MUX1 line multiplexer line PSTAMUX2 86 1 I*2 MUX2 line multiplexer line PSTAXSTA 88 1 I*2 Cross status of multiplexer line PSTAD1OF 90 1 I*2 DIE1 offset see 7.2.5 PSTAD1GA 92 1 I*2 DIE1 gain idem PSTAD2OF 94 1 I*2 DIE2 offset idem PSTAD2GA 96 1 I*2 DIE2 gain idem PSTAFREQ 98 1 I*2 clock speed of CRE value 1, 4, or 8 (kHz) PSTANNDR 100 1 I*2 No. NDRs per ramp 2ⁿ-1 PSTANDR 102 1 I*2 No. DRs per chopper plateau 2ⁿ PSTAINTT 104 1 I*2 Integration time 2^7-n sec PSTAMEAT 106 1 I*2 Measurement time 2ⁿ sec PSTAMPC1 108 1 I*2 Measurement position CHW1 value: 1 - 14, see A.1 PSTAMPC2 110 1 I*2 Measurement position CHW2 idem PSTAMPC3 112 1 I*2 Measurement position CHW3 idem PSTAMET 114 1 I*2 Measured EEU temperature see appendix B.1 PSTASER 116 1 I*2 PHT serendipity mode flag 1= serendipity 0= normal prime instrument PSTAFILL 118 10 I*1 Filler

**Table 12.2:** Coding of chopper mode
Mode	Description
0,1	sawtooth chopping
2, 3	triangular chopping
4, 5, 6, 7	rectangular chop
8	chop between FCS1 and FCS2
13	staring CFOV
14	staring FCS1
9, 10, 11, 12, 15	not used in AOTs

$\dagger$ The value given in the product is n. The formula in the last column above gives the actual value.

12.2 ERD product types

12.2.1 Rationale behind product design

12.2.2 Product PPER

12.2.3 Product P1ER

12.2.4 Product P2ER

12.2.5 Product P2ES

12.2.6 Product PSER

12.2.7 Product PSTA