ASTROSAT CZTI

Data Quality Report

Orbit 20240530_A13_068T05_9000006280_level2

Creation date: 2024-06-04T14:45:55.292840
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_068T05_9000006280cztM0_level2.fits modeM0/AS1A13_068T05_9000006280cztM0_level2_quad_clean.evt
Size (bytes)420,367,680421,640,640
Size400.9 MB 402.1 MB
Events in quadrant A2,508,7522,666,640
Events in quadrant B2,122,1101,881,502
Events in quadrant C2,567,7142,615,426
Events in quadrant D2,120,7962,201,685

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010020
B010020
C010020
D010020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01676610
B02192950
C01048710
D01458820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4957814732.971076%
B495791377127.775873%
C495795121.032695%
D4957843778.828513%

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 58400 49576 0 0 0.00% 0.00%
B 58400 49478 0 0 0.00% 0.00%
C 58400 49573 0 0 0.00% 0.00%
D 58400 49457 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 7 110 2121 8.8 655 609 171.8
A 14 95 1927 7.67 655 609 171.8
A 0 29 1913 7.59 655 609 171.8
B 2 9 1971 12.63 560 530 114.1
B 2 8 1639 9.72 560 530 114.1
B 3 17 1549 8.93 560 530 114.1
C 3 202 1960 7.47 678 627 178.5
C 1 81 1908 7.18 678 627 178.5
C 1 80 1884 7.04 678 627 178.5
D 10 189 1599 6.1 608 549 172.1
D 15 47 1575 5.96 608 549 172.1
D 12 6 1536 5.73 608 549 172.1

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