ASTROSAT CZTI

Data Quality Report

Orbit 46599

Creation date: 2024-06-27T23:25:17.416083
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/AS1A13_092T08_9000006236_46599cztM0_level2.fits modeM0/AS1A13_092T08_9000006236_46599cztM0_level2_quad_clean.evt
Size (bytes)702,702,720108,319,680
Size670.1 MB 103.3 MB
Events in quadrant A7,167,005744,530
Events in quadrant B4,224,996768,094
Events in quadrant C3,686,855747,734
Events in quadrant D10,367,363510,226

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0267076
B0173632
C0161355
D03584112

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73043154.312705%
B73062713.709280%
C73041722.354874%
D7304241733.091457%

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 7460 7308 6 6 0.08% 0.08%
B 7461 7309 25 25 0.34% 0.34%
C 7461 7308 46 46 0.62% 0.63%
D 7460 7308 1929 1929 25.86% 26.40%

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 10 83 3758702 21938.93 820 802 171.3
A 9 191 75527 436.25 820 802 171.3
A 15 235 61569 354.76 820 802 171.3
B 2 2 460098 2774.8 824 797 165.5
B 3 112 96009 575.21 824 797 165.5
B 4 171 77413 462.87 824 797 165.5
C 12 2 204956 1059.86 815 818 192.6
C 15 208 84697 435.49 815 818 192.6
C 14 254 82558 424.38 815 818 192.6
D 1 52 4311786 23849.33 707 684 180.8
D 2 37 1116371 6172.06 707 684 180.8
D 13 168 764645 4226.29 707 684 180.8

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