ASTROSAT CZTI

Data Quality Report

Orbit 29779

Creation date: 2024-06-27T20:07:41.695120
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T03_291T01_9000004278_29779cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29779cztM0_level2_quad_clean.evt
Size (bytes)595,022,400112,999,680
Size567.5 MB 107.8 MB
Events in quadrant A3,757,798740,794
Events in quadrant B6,007,909745,533
Events in quadrant C3,727,788715,815
Events in quadrant D4,016,468695,989

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161072
B0230842
C0157122
D0165722

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7535931.234240%
B75351752.322495%
C75351191.579297%
D7535310.411413%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7805 7537 54 54 0.69% 0.72%
B 7805 7537 5 5 0.06% 0.07%
C 7805 7537 0 0 0.00% 0.00%
D 7805 7537 9 9 0.12% 0.12%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 12 96 211017 1137.09 918 899 184.8
A 13 254 17005 87.16 918 899 184.8
A 3 137 9418 46.1 918 899 184.8
B 6 159 2258048 12846.31 916 893 175.7
B 0 229 111080 627.12 916 893 175.7
B 12 111 21819 119.1 916 893 175.7
C 14 238 147192 710.39 886 891 205.9
C 3 233 98972 476.25 886 891 205.9
C 2 114 18195 84.02 886 891 205.9
D 8 195 567417 2657.36 890 864 213.2
D 2 250 34026 155.54 890 864 213.2
D 2 234 33006 150.76 890 864 213.2

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter