ASTROSAT CZTI

Data Quality Report

Orbit 54619

Creation date: 2025-11-02T06:04:37.743903
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_066T07_9000006522_54619cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54619cztM0_level2_quad_clean.evt
Size (bytes)465,854,40093,850,560
Size444.3 MB 89.5 MB
Events in quadrant A3,396,118621,521
Events in quadrant B3,406,945658,507
Events in quadrant C4,049,513575,744
Events in quadrant D5,901,373545,446

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146951
B0147621
C0164821
D0222421

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63141862.945835%
B63142383.769401%
C63143415.400697%
D63152213.499604%

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 7419 6315 133 133 1.79% 2.11%
B 7419 6315 132 132 1.78% 2.09%
C 7419 6316 301 301 4.06% 4.77%
D 7420 6316 100 100 1.35% 1.58%

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 8 244135 1424.63 694 678 170.9
A 11 3 168743 983.46 694 678 170.9
A 3 14 77358 448.71 694 678 170.9
B 1 207 414674 2817.18 686 660 147.0
B 10 247 107565 727.44 686 660 147.0
B 5 172 91546 618.44 686 660 147.0
C 13 3 1167479 6334.55 670 667 184.2
C 6 223 55372 296.99 670 667 184.2
C 1 16 52805 283.05 670 667 184.2
D 2 62 2340740 12072.09 667 636 193.8
D 2 172 347423 1789.0 667 636 193.8
D 8 160 292777 1507.09 667 636 193.8

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