ASTROSAT CZTI

Data Quality Report

Orbit 20220514_A10_071T19_9000005144_level2

Creation date: 2026-01-02T17:19:15.296000
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_071T19_9000005144cztM0_level2.fits modeM0/AS1A10_071T19_9000005144cztM0_level2_quad_clean.evt
Size (bytes)353,453,760294,552,000
Size337.1 MB 280.9 MB
Events in quadrant A2,044,4981,422,641
Events in quadrant B2,126,5481,811,521
Events in quadrant C2,182,1321,740,649
Events in quadrant D1,797,9221,395,392

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01295100
B0868410
C0806100
D01223220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01570
B01570
C01570
D01570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07600
B07600
C07600
D07600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A37099663817.892666%
B370987512.024368%
C370993731.005418%
D37098436811.774220%

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 51082 36970 0 0 0.00% 0.00%
B 51082 37085 0 0 0.00% 0.00%
C 51082 37085 0 0 0.00% 0.00%
D 51082 36904 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 9 19 1725 9.31 534 502 131.4
A 0 29 1677 8.94 534 502 131.4
A 7 110 1634 8.62 534 502 131.4
B 2 9 1785 11.13 563 538 112.1
B 3 80 1714 10.49 563 538 112.1
B 2 8 1477 8.38 563 538 112.1
C 1 81 1837 8.69 575 542 149.1
C 1 80 1821 8.58 575 542 149.1
C 3 202 1746 8.08 575 542 149.1
D 4 160 1355 6.48 514 471 136.3
D 6 38 1289 6.0 514 471 136.3
D 10 113 1285 5.97 514 471 136.3

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