ASTROSAT CZTI

Data Quality Report

Orbit 20220228_C07_001T01_9000004982_level2

Creation date: 2026-01-01T15:50:39.813309
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/AS1C07_001T01_9000004982cztM0_level2.fits modeM0/AS1C07_001T01_9000004982cztM0_level2_quad_clean.evt
Size (bytes)758,292,480966,067,200
Size723.2 MB 921.3 MB
Events in quadrant A4,602,5846,198,306
Events in quadrant B4,454,6006,231,435
Events in quadrant C4,560,2686,102,224
Events in quadrant D3,752,5705,136,263

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02004860
B01798500
C01716550
D02981080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016600
B016600
C016600
D016600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03010
B03010
C03010
D03010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8158120332.492002%
B8158111621.424351%
C815815110.626371%
D8158170168.600042%

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 111306 81579 0 0 0.00% 0.00%
B 111306 81578 0 0 0.00% 0.00%
C 111306 81577 0 0 0.00% 0.00%
D 111306 81547 0 0 0.00% 0.00%

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 9 19 3853 9.28 1203 1136 292.8
A 0 29 3720 8.83 1203 1136 292.8
A 7 110 3719 8.82 1203 1136 292.8
B 2 9 3813 11.6 1181 1130 231.2
B 3 80 3450 10.03 1181 1130 231.2
B 2 8 3180 8.87 1181 1130 231.2
C 3 158 3079 6.39 1206 1137 303.8
C 3 187 3046 6.28 1206 1137 303.8
C 9 188 2986 6.09 1206 1137 303.8
D 7 3 2823 6.42 1075 982 286.5
D 10 113 2739 6.13 1075 982 286.5
D 6 67 2728 6.09 1075 982 286.5

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