ASTROSAT CZTI

Data Quality Report

Orbit 20210509_A10_053T15_9000004364_level2

Creation date: 2025-12-25T10:29:55.911010
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/AS1A10_053T15_9000004364cztM0_level2.fits modeM0/AS1A10_053T15_9000004364cztM0_level2_quad_clean.evt
Size (bytes)631,814,400475,225,920
Size602.5 MB 453.2 MB
Events in quadrant A4,022,7822,734,280
Events in quadrant B3,795,6702,709,311
Events in quadrant C3,658,6002,324,427
Events in quadrant D3,431,4962,398,560

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01304430
B01868200
C02183600
D01458050

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01010
B01010
C01010
D01010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012520
B012520
C012520
D012520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A615717421.205113%
B6157113192.142242%
C61571832213.516103%
D615719821.594907%

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 71621 61563 0 0 0.00% 0.00%
B 71621 61560 0 0 0.00% 0.00%
C 71620 61525 0 0 0.00% 0.00%
D 71621 61562 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 3837 11.14 1050 990 255.5
A 7 110 3197 8.64 1050 990 255.5
A 14 95 2929 7.59 1050 990 255.5
B 2 9 2888 9.85 1002 960 195.7
B 3 80 2520 7.97 1002 960 195.7
B 5 128 2504 7.89 1002 960 195.7
C 1 81 2812 7.88 966 911 241.3
C 1 80 2806 7.85 966 911 241.3
C 12 241 2592 6.97 966 911 241.3
D 15 46 2543 6.35 980 894 259.6
D 7 3 2520 6.26 980 894 259.6
D 3 14 2453 6.0 980 894 259.6

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