ASTROSAT CZTI

Data Quality Report

Orbit 58342

Creation date: 2026-07-10T18:10:59.133560
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/AS1A14_044T03_9000006588_58342cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58342cztM0_level2_quad_clean.evt
Size (bytes)587,119,680108,743,040
Size559.9 MB 103.7 MB
Events in quadrant A4,560,666731,818
Events in quadrant B8,370,757608,625
Events in quadrant C3,917,836726,493
Events in quadrant D4,266,927674,129

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192661
B0301891
C0175971
D0181781

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79353113.919345%
B7935221127.863894%
C7935851.071204%
D79351111.398866%

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 7935 7935 175 175 2.21% 2.21%
B 7935 7935 1288 1288 16.23% 16.23%
C 7935 7935 50 50 0.63% 0.63%
D 7935 7935 60 60 0.76% 0.76%

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 7 64 810081 3731.86 880 858 216.8
A 2 143 79677 363.49 880 858 216.8
A 13 248 64068 291.5 880 858 216.8
B 6 255 4091866 24545.35 775 748 166.7
B 10 128 294057 1759.76 775 748 166.7
B 8 234 151953 907.18 775 748 166.7
C 6 223 160645 680.54 859 851 234.8
C 9 38 92794 391.57 859 851 234.8
C 6 13 85545 360.7 859 851 234.8
D 11 129 221894 915.28 859 821 241.5
D 12 110 189723 782.08 859 821 241.5
D 8 160 146292 602.27 859 821 241.5

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