ASTROSAT CZTI

Data Quality Report

Orbit 10991

Creation date: 2024-06-27T16:06:39.415704
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_027T06_9000001594_10991cztM0_level2.evt modeM0/AS1G08_027T06_9000001594_10991cztM0_level2_quad_clean.evt
Size (bytes)623,036,160105,750,720
Size594.2 MB 100.9 MB
Events in quadrant A5,143,967658,651
Events in quadrant B5,338,727683,808
Events in quadrant C3,503,676675,890
Events in quadrant D4,358,940646,775

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205262
B0210011
C0159721
D0181521

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77195667.332556%
B77194185.415209%
C7719340.440472%
D7719670.867988%

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 7949 7721 404 404 5.08% 5.23%
B 7949 7721 222 222 2.79% 2.88%
C 7949 7721 11 11 0.14% 0.14%
D 7949 7721 21 21 0.26% 0.27%

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 8 5 1613735 8776.69 893 874 183.8
A 15 223 21789 113.81 893 874 183.8
A 8 15 19908 103.58 893 874 183.8
B 4 239 1484607 8554.12 906 886 173.5
B 3 189 74454 424.14 906 886 173.5
B 0 219 62313 354.14 906 886 173.5
C 4 254 48728 233.07 880 884 205.3
C 8 128 8471 36.96 880 884 205.3
C 13 61 6711 28.39 880 884 205.3
D 8 195 402610 1864.04 877 849 215.5
D 1 52 237772 1099.25 877 849 215.5
D 5 222 120519 555.23 877 849 215.5

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