ASTROSAT CZTI

Data Quality Report

Orbit 53301

Creation date: 2025-08-05T13:10:22.316500
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/AS1C09_011T08_9000006492_53301cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53301cztM0_level2_quad_clean.evt
Size (bytes)737,700,48088,536,960
Size703.5 MB 84.4 MB
Events in quadrant A3,507,783644,278
Events in quadrant B5,201,367659,730
Events in quadrant C12,895,141320,491
Events in quadrant D5,163,495570,782

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156470
B0203410
C0430660
D0204870

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69621091.565642%
B69625177.426027%
C6962364352.326918%
D69613454.956184%

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 6963 6963 88 88 1.26% 1.26%
B 6963 6963 259 259 3.72% 3.72%
C 6963 6963 3338 3338 47.94% 47.94%
D 6962 6962 329 329 4.73% 4.73%

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 7 206 259134 1444.78 714 694 178.9
A 0 8 163630 910.87 714 694 178.9
A 4 159 131738 732.58 714 694 178.9
B 4 206 1107459 7486.65 698 675 147.8
B 4 81 396375 2676.65 698 675 147.8
B 10 28 317812 2145.22 698 675 147.8
C 1 241 7634753 53821.8 514 510 141.8
C 15 224 991346 6985.44 514 510 141.8
C 15 147 819883 5776.62 514 510 141.8
D 11 245 1280647 6588.3 682 652 194.3
D 3 12 472548 2428.91 682 652 194.3
D 2 249 167596 859.28 682 652 194.3

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