ASTROSAT CZTI

Data Quality Report

Orbit 52308

Creation date: 2025-07-22T16:02:29.342385
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_011T05_9000006474_52308cztM0_level2.fits modeM0/AS1C09_011T05_9000006474_52308cztM0_level2_quad_clean.evt
Size (bytes)728,752,32074,695,680
Size695.0 MB 71.2 MB
Events in quadrant A3,163,592570,209
Events in quadrant B3,652,772608,074
Events in quadrant C10,761,345286,682
Events in quadrant D8,940,688383,513

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133701
B0149251
C0360601
D0306991

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5908911.540284%
B59091322.233881%
C5909312352.851582%
D5909187631.748181%

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 7048 5909 69 69 0.98% 1.17%
B 7049 5909 59 59 0.84% 1.00%
C 7048 5908 2996 2996 42.51% 50.71%
D 7049 5910 1854 1854 26.30% 31.37%

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 11 3 264624 1704.91 619 604 154.9
A 12 3 105338 676.32 619 604 154.9
A 3 14 67391 431.28 619 604 154.9
B 0 216 325149 2557.21 606 586 126.9
B 4 171 305046 2398.82 606 586 126.9
B 10 254 224923 1767.54 606 586 126.9
C 9 38 3345986 27370.79 438 435 122.2
C 15 224 2372750 19408.5 438 435 122.2
C 0 161 1251493 10235.22 438 435 122.2
D 12 2 4048353 27475.01 512 487 147.3
D 2 172 1109396 7526.75 512 487 147.3
D 15 93 808254 5482.74 512 487 147.3

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