CompressionFactorStudy
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The compression rate of on board EIS data may vary depending on a few factors such as the observing target (QS, AR, CH, etc), slit/slot selection, exposures, etc.

The purpose of this study is trying to investigate how different compression schemes effect EIS data volume on board and work out a better estimation of compression rate for compression scheme (eg. DPCM, JPEG98, JPEG95, etc.)

The approach:

1. to get actual data volume from MDP status information: the inclined curve means data packets from EIS on MDP, the vertical curve means data packets dumped to ground station. So in general, known a raster's start and end time can calculate actual data volume, and then compare it with the designed data volume of this raster to get data compression rate.

2. to get related information from planning database/eis catalogue/fits header, for example: raster ID, compression scheme, designed data volume, SCI_OBJ, TARGET, slit/slot, exposures, etc.

3. prepare plots based on various factor combinations: compression rate vs. slit/slot, rate vs. target, rate vs. exposures


Some preliminary results (plots):

(The investigation here is for dates between 2007-Sep-15 and 2007-Dec-15, as EIS is operationally stable over this duration.)

DPCM Compression Scheme

JPEG98 Compression Scheme

JPEG95 Compression Scheme

JPEG90 Compression Scheme

JPEG85 Compression Scheme

JPEG75 Compression Scheme

DPCM compression (all samples) #

DPCM compression vs different target#

DPCM vs. QS

DPCM vs. AR

DPCM vs. CH

DPCM vs. PCH

DPCM vs. FIL

DPCM compression vs SLA selection#

DPCM vs. 1" slit

DPCM vs. 2" slit

DPCM vs. 40" slit

DPCM vs. 266" slit

DPCM compression vs SLA selection vs target#

DPCM vs. 1" slit vs. AR

DPCM vs. 2" slit vs. AR

DPCM vs. 40" slit vs. AR

DPCM vs. 266" slit vs. AR

DPCM vs. 1" slit vs. AR

DPCM vs. 2" slit vs. AR

DPCM vs. 40" slit vs. AR

DPCM vs. 266" slit vs. AR

DPCM vs. 1" slit vs. QS

DPCM vs. 2" slit vs. QS

DPCM vs. 40" slit vs. QS

DPCM vs. 266" slit vs. QS

DPCM vs. 1" slit vs. CH

DPCM vs. 2" slit vs. CH

DPCM vs. 40" slit vs. CH

DPCM vs. 266" slit vs. CH

DPCM vs. 1" slit vs. FIL

DPCM vs. 2" slit vs. FIL

DPCM vs. 40" slit vs. FIL

DPCM vs. 266" slit vs. FIL

DPCM vs. 1" slit vs. PCH

DPCM vs. 2" slit vs. PCH

DPCM vs. 40" slit vs. PCH

DPCM vs. 266" slit vs. PCH

DPCM compression vs different exposures#

DPCM vs. 10 second

DPCM vs. 15 second

DPCM vs. 20 second

DPCM vs. 30 second

DPCM vs. 60s second

DPCM compression vs 1" SLA selection vs exposures#

DPCM vs. 1" slit vs. 10s exposures

DPCM vs. 1" slit vs. 15s exposures

DPCM vs. 1" slit vs. 20s exposures

DPCM vs. 1" slit vs. 30s exposures

DPCM vs. 1" slit vs. 60s exposures

DPCM compression vs 2" SLA selection vs exposures#

DPCM vs. 2" slit vs. 10s exposures

DPCM vs. 2" slit vs. 15s exposures

DPCM vs. 2" slit vs. 20s exposures

DPCM vs. 2" slit vs. 30s exposures

DPCM vs. 2" slit vs. 60s exposures

DPCM compression vs 40" SLA selection vs exposures#

DPCM vs. 40" slit vs. 10s exposures

DPCM vs. 40" slit vs. 15s exposures

DPCM vs. 40" slit vs. 20s exposures

DPCM vs. 40" slit vs. 30s exposures

DPCM vs. 40" slit vs. 60s exposures

DPCM compression vs 266" SLA selection vs exposures#

DPCM vs. 266" slit vs. 10s exposures

DPCM vs. 266" slit vs. 15s exposures

DPCM vs. 266" slit vs. 20s exposures

DPCM vs. 266" slit vs. 30s exposures

DPCM vs. 266" slit vs. 60s exposures

JPEG98 compression (all samples) #

JPEG98 compression vs different target#

JPEG98 vs. QS

JPEG98 vs. AR

JPEG98 vs. CH

JPEG98 vs. PCH

JPEG98 vs. FIL

JPEG98 compression vs SLA selection#

JPEG98 vs. 1" slit

JPEG98 vs. 2" slit

JPEG98 vs. 40" slit

JPEG98 vs. 266" slit

JPEG98 compression vs SLA selection vs target#

JPEG98 vs. 1" slit vs. AR

JPEG98 vs. 2" slit vs. AR

JPEG98 vs. 40" slit vs. AR

JPEG98 vs. 266" slit vs. AR

JPEG98 vs. 1" slit vs. AR

JPEG98 vs. 2" slit vs. AR

JPEG98 vs. 40" slit vs. AR

JPEG98 vs. 266" slit vs. AR

JPEG98 vs. 1" slit vs. QS

JPEG98 vs. 2" slit vs. QS

JPEG98 vs. 40" slit vs. QS

JPEG98 vs. 266" slit vs. QS

JPEG98 vs. 1" slit vs. CH

JPEG98 vs. 2" slit vs. CH

JPEG98 vs. 40" slit vs. CH

JPEG98 vs. 266" slit vs. CH

JPEG98 vs. 1" slit vs. FIL

JPEG98 vs. 2" slit vs. FIL

JPEG98 vs. 40" slit vs. FIL

JPEG98 vs. 266" slit vs. FIL

JPEG98 vs. 1" slit vs. PCH

JPEG98 vs. 2" slit vs. PCH

JPEG98 vs. 40" slit vs. PCH

JPEG98 vs. 266" slit vs. PCH

JPEG98 compression vs different exposures#

JPEG98 vs. 10 second

JPEG98 vs. 15 second

JPEG98 vs. 20 second

JPEG98 vs. 30 second

JPEG98 vs. 60s second

JPEG98 compression vs 1" SLA selection vs exposures#

JPEG98 vs. 1" slit vs. 10s exposures

JPEG98 vs. 1" slit vs. 15s exposures

JPEG98 vs. 1" slit vs. 20s exposures

JPEG98 vs. 1" slit vs. 30s exposures

JPEG98 vs. 1" slit vs. 60s exposures

JPEG98 compression vs 2" SLA selection vs exposures#

JPEG98 vs. 2" slit vs. 10s exposures

JPEG98 vs. 2" slit vs. 15s exposures

JPEG98 vs. 2" slit vs. 20s exposures

JPEG98 vs. 2" slit vs. 30s exposures

JPEG98 vs. 2" slit vs. 60s exposures

JPEG98 compression vs 40" SLA selection vs exposures#

JPEG98 vs. 40" slit vs. 10s exposures

JPEG98 vs. 40" slit vs. 15s exposures

JPEG98 vs. 40" slit vs. 20s exposures

JPEG98 vs. 40" slit vs. 30s exposures

JPEG98 vs. 40" slit vs. 60s exposures

JPEG98 compression vs 266" SLA selection vs exposures#

JPEG98 vs. 266" slit vs. 10s exposures

JPEG98 vs. 266" slit vs. 15s exposures

JPEG98 vs. 266" slit vs. 20s exposures

JPEG98 vs. 266" slit vs. 30s exposures

JPEG98 vs. 266" slit vs. 60s exposures

JPEG95 compression (all samples) #

JPEG95 compression vs different target#

JPEG95 vs. QS

JPEG95 vs. AR

JPEG95 vs. CH

JPEG95 vs. PCH

JPEG95 vs. FIL

JPEG95 compression vs SLA selection#

JPEG95 vs. 1" slit

JPEG95 vs. 2" slit

JPEG95 vs. 40" slit

JPEG95 vs. 266" slit

JPEG95 compression vs SLA selection vs target#

JPEG95 vs. 1" slit vs. AR

JPEG95 vs. 2" slit vs. AR

JPEG95 vs. 40" slit vs. AR

JPEG95 vs. 266" slit vs. AR

JPEG95 vs. 1" slit vs. AR

JPEG95 vs. 2" slit vs. AR

JPEG95 vs. 40" slit vs. AR

JPEG95 vs. 266" slit vs. AR

JPEG95 vs. 1" slit vs. QS

JPEG95 vs. 2" slit vs. QS

JPEG95 vs. 40" slit vs. QS

JPEG95 vs. 266" slit vs. QS

JPEG95 vs. 1" slit vs. CH

JPEG95 vs. 2" slit vs. CH

JPEG95 vs. 40" slit vs. CH

JPEG95 vs. 266" slit vs. CH

JPEG95 vs. 1" slit vs. FIL

JPEG95 vs. 2" slit vs. FIL

JPEG95 vs. 40" slit vs. FIL

JPEG95 vs. 266" slit vs. FIL

JPEG95 vs. 1" slit vs. PCH

JPEG95 vs. 2" slit vs. PCH

JPEG95 vs. 40" slit vs. PCH

JPEG95 vs. 266" slit vs. PCH

JPEG95 compression vs different exposures#

JPEG95 vs. 10 second

JPEG95 vs. 15 second

JPEG95 vs. 20 second

JPEG95 vs. 30 second

JPEG95 vs. 60s second

JPEG95 compression vs 1" SLA selection vs exposures#

JPEG95 vs. 1" slit vs. 10s exposures

JPEG95 vs. 1" slit vs. 15s exposures

JPEG95 vs. 1" slit vs. 20s exposures

JPEG95 vs. 1" slit vs. 30s exposures

JPEG95 vs. 1" slit vs. 60s exposures

JPEG95 compression vs 2" SLA selection vs exposures#

JPEG95 vs. 2" slit vs. 10s exposures

JPEG95 vs. 2" slit vs. 15s exposures

JPEG95 vs. 2" slit vs. 20s exposures

JPEG95 vs. 2" slit vs. 30s exposures

JPEG95 vs. 2" slit vs. 60s exposures

JPEG95 compression vs 40" SLA selection vs exposures#

JPEG95 vs. 40" slit vs. 10s exposures

JPEG95 vs. 40" slit vs. 15s exposures

JPEG95 vs. 40" slit vs. 20s exposures

JPEG95 vs. 40" slit vs. 30s exposures

JPEG95 vs. 40" slit vs. 60s exposures

JPEG95 compression vs 266" SLA selection vs exposures#

JPEG95 vs. 266" slit vs. 10s exposures

JPEG95 vs. 266" slit vs. 15s exposures

JPEG95 vs. 266" slit vs. 20s exposures

JPEG95 vs. 266" slit vs. 30s exposures

JPEG95 vs. 266" slit vs. 60s exposures

JPEG90 compression (all samples) #

JPEG90 compression vs different target#

JPEG90 vs. QS

JPEG90 vs. AR

JPEG90 vs. CH

JPEG90 vs. PCH

JPEG90 vs. FIL

JPEG90 compression vs SLA selection#

JPEG90 vs. 1" slit

JPEG90 vs. 2" slit

JPEG90 vs. 40" slit

JPEG90 vs. 266" slit

JPEG90 compression vs SLA selection vs target#

JPEG90 vs. 1" slit vs. AR

JPEG90 vs. 2" slit vs. AR

JPEG90 vs. 40" slit vs. AR

JPEG90 vs. 266" slit vs. AR

JPEG90 vs. 1" slit vs. AR

JPEG90 vs. 2" slit vs. AR

JPEG90 vs. 40" slit vs. AR

JPEG90 vs. 266" slit vs. AR

JPEG90 vs. 1" slit vs. QS

JPEG90 vs. 2" slit vs. QS

JPEG90 vs. 40" slit vs. QS

JPEG90 vs. 266" slit vs. QS

JPEG90 vs. 1" slit vs. CH

JPEG90 vs. 2" slit vs. CH

JPEG90 vs. 40" slit vs. CH

JPEG90 vs. 266" slit vs. CH

JPEG90 vs. 1" slit vs. FIL

JPEG90 vs. 2" slit vs. FIL

JPEG90 vs. 40" slit vs. FIL

JPEG90 vs. 266" slit vs. FIL

JPEG90 vs. 1" slit vs. PCH

JPEG90 vs. 2" slit vs. PCH

JPEG90 vs. 40" slit vs. PCH

JPEG90 vs. 266" slit vs. PCH

JPEG90 compression vs different exposures#

JPEG90 vs. 10 second

JPEG90 vs. 15 second

JPEG90 vs. 20 second

JPEG90 vs. 30 second

JPEG90 vs. 60s second

JPEG90 compression vs 1" SLA selection vs exposures#

JPEG90 vs. 1" slit vs. 10s exposures

JPEG90 vs. 1" slit vs. 15s exposures

JPEG90 vs. 1" slit vs. 20s exposures

JPEG90 vs. 1" slit vs. 30s exposures

JPEG90 vs. 1" slit vs. 60s exposures

JPEG90 compression vs 2" SLA selection vs exposures#

JPEG90 vs. 2" slit vs. 10s exposures

JPEG90 vs. 2" slit vs. 15s exposures

JPEG90 vs. 2" slit vs. 20s exposures

JPEG90 vs. 2" slit vs. 30s exposures

JPEG90 vs. 2" slit vs. 60s exposures

JPEG90 compression vs 40" SLA selection vs exposures#

JPEG90 vs. 40" slit vs. 10s exposures

JPEG90 vs. 40" slit vs. 15s exposures

JPEG90 vs. 40" slit vs. 20s exposures

JPEG90 vs. 40" slit vs. 30s exposures

JPEG90 vs. 40" slit vs. 60s exposures

JPEG90 compression vs 266" SLA selection vs exposures#

JPEG90 vs. 266" slit vs. 10s exposures

JPEG90 vs. 266" slit vs. 15s exposures

JPEG90 vs. 266" slit vs. 20s exposures

JPEG90 vs. 266" slit vs. 30s exposures

JPEG90 vs. 266" slit vs. 60s exposures

JPEG85 compression (all samples) #

JPEG85 compression vs different target#

JPEG85 vs. QS

JPEG85 vs. AR

JPEG85 vs. CH

JPEG85 compression vs SLA selection#

JPEG85 vs. 40" slit

JPEG85 vs. 266" slit

JPEG85 compression vs SLA selection vs target#

JPEG85 vs. 40" slit vs. AR

JPEG85 vs. 266" slit vs. AR

JPEG85 vs. 40" slit vs. QS

JPEG85 vs. 266" slit vs. QS

JPEG85 vs. 40" slit vs. CH

JPEG85 vs. 266" slit vs. CH

JPEG85 compression vs different exposures#

JPEG85 vs. 30 second

JPEG85 compression vs 266" SLA selection vs exposures#

JPEG85 vs. 40" slit vs. 30s exposures

JPEG85 vs. 266" slit vs. 30s exposures

JPEG75 compression (all samples) #

JPEG75 compression vs different target#

JPEG75 vs. QS

JPEG75 vs. AR

JPEG75 vs. CH

JPEG75 compression vs SLA selection#

JPEG75 vs. 40" slit

JPEG75 vs. 266" slit

JPEG75 compression vs SLA selection vs target#

JPEG75 vs. 40" slit vs. AR

JPEG75 vs. 266" slit vs. AR

JPEG75 vs. 40" slit vs. QS

JPEG75 vs. 266" slit vs. QS

JPEG75 vs. 40" slit vs. CH

JPEG75 vs. 266" slit vs. CH

JPEG75 compression vs different exposures#

JPEG75 vs. 30 second

JPEG75 compression vs 266" SLA selection vs exposures#

JPEG75 vs. 40" slit vs. 30s exposures

JPEG75 vs. 266" slit vs. 30s exposures

QS	QS,DC	QS,SYN	QS,CH   QS,NET	QS,DC,XBP	QS,SYN,DC       QS,DC,SEI       QS,PCH

XBP,QS

AR      AR,LMB          AR,EFR          AR,PLG  AR,CH   AR,NFL  AR,CH,LMB

SYN     SYN,DC          SYN,QS,DC

PCH     PCH,LMB,JET     PCH,JET

JET,LMB,PCH

LMB     LMB,LO          LMB,PCH,SPI     LMB,SPI

ENG,LMB,JET,PCH         ENG,QS,DC

SYN,DC,QS       SYN,DC

CH      CH,JET          CH,XBP          CH,DC   CH,LMB          CH,QS           CH,XBP,JET,EFR          CH,BP,JET

PR      PR,LMB          PP,PCH

SPI,LMB

EFR     SEI,EFR

DC      DC,LMB          WAV     NET

SPI     SPI,CH

BP,CH,JET       BP,JET

FIL,PR          FIL,QS