ASTROSAT CZTI

Data Quality Report

Orbit 16042

Creation date: 2024-06-27T17:17:11.191424
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_012T01_9000002370_16042cztM0_level2.evt modeM0/AS1G08_012T01_9000002370_16042cztM0_level2_quad_clean.evt
Size (bytes)513,679,680107,305,920
Size489.9 MB 102.3 MB
Events in quadrant A3,761,799679,051
Events in quadrant B3,859,598693,183
Events in quadrant C3,802,363676,710
Events in quadrant D3,611,531666,874

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164783
B0166852
C0163742
D0163072

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76731972.567444%
B76732633.427603%
C76732803.649159%
D76731141.485729%

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 8269 7675 1 1 0.01% 0.01%
B 8269 7675 5 5 0.06% 0.07%
C 8269 7675 0 0 0.00% 0.00%
D 8269 7677 3 3 0.04% 0.04%

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 15 157 31060 154.19 957 936 195.4
A 3 80 20143 98.31 957 936 195.4
A 12 96 19035 92.64 957 936 195.4
B 0 189 24666 127.74 958 933 185.8
B 0 229 23435 121.11 958 933 185.8
B 12 111 22985 118.69 958 933 185.8
C 14 238 142443 638.97 929 935 221.5
C 3 233 28281 123.48 929 935 221.5
C 10 22 8459 33.97 929 935 221.5
D 2 152 29518 124.13 939 913 230.4
D 2 234 25584 107.06 939 913 230.4
D 13 232 20209 83.74 939 913 230.4

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