ASTROSAT CZTI

Data Quality Report

Orbit 20200314_A07_069T01_9000003570_level2

Creation date: 2025-12-10T01:10:18.763072
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/AS1A07_069T01_9000003570cztM0_level2.fits modeM0/AS1A07_069T01_9000003570cztM0_level2_quad_clean.evt
Size (bytes)1,046,139,840736,202,880
Size997.7 MB 702.1 MB
Events in quadrant A6,737,6364,150,727
Events in quadrant B6,319,2604,065,216
Events in quadrant C6,356,8103,876,599
Events in quadrant D5,268,1123,204,491

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020740
B020740
C020740
D020740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02163570
B02373810
C02215150
D03268540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01840
B01840
C01840
D01840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10205713351.308093%
B10205746794.584693%
C10205721692.125283%
D1020571337013.100522%

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 120253 102048 0 0 0.00% 0.00%
B 120253 101923 0 0 0.00% 0.00%
C 120253 102049 0 0 0.00% 0.00%
D 120253 101591 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 0 29 6371 11.22 1752 1651 420.6
A 7 110 5425 8.97 1752 1651 420.6
A 9 19 5026 8.02 1752 1651 420.6
B 2 9 4824 9.82 1675 1605 327.7
B 3 80 4125 7.69 1675 1605 327.7
B 2 8 4077 7.54 1675 1605 327.7
C 1 81 4743 7.47 1678 1573 424.5
C 1 80 4687 7.34 1678 1573 424.5
C 12 241 4366 6.58 1678 1573 424.5
D 3 14 3804 6.13 1503 1369 397.1
D 10 189 3763 6.03 1503 1369 397.1
D 7 3 3695 5.86 1503 1369 397.1

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