ASTROSAT CZTI

Data Quality Report

Orbit 12872

Creation date: 2024-06-27T16:33:24.022588
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/AS1G08_041T01_9000001892_12872cztM0_level2.evt modeM0/AS1G08_041T01_9000001892_12872cztM0_level2_quad_clean.evt
Size (bytes)647,470,08084,257,280
Size617.5 MB 80.4 MB
Events in quadrant A3,948,294513,013
Events in quadrant B7,028,371491,142
Events in quadrant C3,796,033510,702
Events in quadrant D4,298,401485,335

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169633
B0260802
C0166352
D0182392

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79282613.292129%
B7928146018.415742%
C79281241.564077%
D79282372.989405%

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 8428 7931 1 1 0.01% 0.01%
B 8428 7931 854 854 10.13% 10.77%
C 8428 7931 0 0 0.00% 0.00%
D 8428 7931 102 102 1.21% 1.29%

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 15 174 39640 190.16 998 972 203.3
A 8 15 15754 72.7 998 972 203.3
A 12 189 13970 63.92 998 972 203.3
B 0 85 1913986 10754.35 925 902 177.9
B 4 239 941567 5287.92 925 902 177.9
B 0 219 288672 1617.69 925 902 177.9
C 8 128 12526 51.1 967 972 226.1
C 13 61 7166 27.39 967 972 226.1
C 8 112 7113 27.16 967 972 226.1
D 1 52 452805 1931.53 961 933 233.9
D 2 14 57269 240.81 961 933 233.9
D 2 136 46862 196.32 961 933 233.9

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