ASTROSAT CZTI

Data Quality Report

Orbit 58445

Creation date: 2026-07-17T16:14:49.041689
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_045T01_9000006590_58445cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58445cztM0_level2_quad_clean.evt
Size (bytes)453,038,400111,222,720
Size432.1 MB 106.1 MB
Events in quadrant A3,573,520727,440
Events in quadrant B4,963,249753,854
Events in quadrant C3,475,907699,699
Events in quadrant D4,155,755649,035

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161781
B0200760
C0160560
D0177660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7734540.698216%
B77344085.275407%
C7734160.206879%
D77341391.797259%

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 7734 7734 35 35 0.45% 0.45%
B 7734 7734 294 294 3.80% 3.80%
C 7734 7734 7 7 0.09% 0.09%
D 7734 7734 121 121 1.56% 1.56%

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 13 248 82106 380.57 853 831 213.6
A 12 80 40533 185.9 853 831 213.6
A 4 249 38896 178.24 853 831 213.6
B 5 172 931229 5203.75 826 797 178.8
B 8 128 151707 844.02 826 797 178.8
B 4 201 134938 750.23 826 797 178.8
C 4 5 53545 233.95 826 821 225.4
C 14 254 45527 198.37 826 821 225.4
C 14 245 42226 183.73 826 821 225.4
D 8 240 450416 1927.6 818 779 233.3
D 2 249 199137 850.36 818 779 233.3
D 2 120 104064 442.78 818 779 233.3

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