ASTROSAT CZTI

Data Quality Report

Orbit 54912

Creation date: 2025-11-21T23:36:37.405985
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_014T01_9000006528_54912cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54912cztM0_level2_quad_clean.evt
Size (bytes)569,226,24099,434,880
Size542.9 MB 94.8 MB
Events in quadrant A5,689,165638,379
Events in quadrant B3,756,647709,757
Events in quadrant C4,202,374633,161
Events in quadrant D6,854,995519,533

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022355369
B016375308
C018176345
D0264731096

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01544
C01540
D01546

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73175747.844745%
B73393494.755416%
C73333284.472931%
D7243115315.918818%

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 7719 7397 176 176 2.28% 2.38%
B 7716 7419 21 21 0.27% 0.28%
C 7717 7416 90 90 1.17% 1.21%
D 7719 7346 720 720 9.33% 9.80%

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 3 14 1589776 7922.12 809 785 200.6
A 0 8 619780 3086.08 809 785 200.6
A 0 250 163442 810.95 809 785 200.6
B 5 236 336151 1879.56 820 787 178.4
B 5 185 74885 415.28 820 787 178.4
B 7 252 43523 239.52 820 787 178.4
C 4 5 354837 1598.86 814 807 221.4
C 9 38 212071 954.1 814 807 221.4
C 12 252 105551 473.04 814 807 221.4
D 3 12 921011 4312.7 757 727 213.4
D 15 94 843608 3949.97 757 727 213.4
D 14 52 686579 3214.09 757 727 213.4

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