ASTROSAT CZTI

Data Quality Report

Orbit 20230101_A12_037T01_9000005456_level2

Creation date: 2023-01-03T14:57:07.621805
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/AS1A12_037T01_9000005456cztM0_level2.fits modeM0/AS1A12_037T01_9000005456cztM0_level2_quad_clean.evt
Size (bytes)563,843,520514,465,920
Size537.7 MB 490.6 MB
Events in quadrant A3,397,7742,918,818
Events in quadrant B3,390,2123,164,650
Events in quadrant C3,503,1583,044,067
Events in quadrant D2,411,3182,091,918

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01920500
B01389280
C01298210
D03693330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012940
B012940
C012940
D012940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02420
B02420
C02420
D02420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6357255548.736551%
B635727411.165608%
C63572760.119549%
D635722576540.528849%

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 87492 63558 0 0 0.00% 0.00%
B 87492 63568 0 0 0.00% 0.00%
C 87492 63573 0 0 0.00% 0.00%
D 87492 63453 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 0 29 2800 8.76 886 825 225.5
A 7 110 2763 8.59 886 825 225.5
A 9 19 2709 8.35 886 825 225.5
B 2 9 2939 11.88 894 851 175.8
B 3 80 2568 9.77 894 851 175.8
B 2 8 2364 8.61 894 851 175.8
C 1 81 2972 8.85 925 863 238.2
C 1 80 2830 8.26 925 863 238.2
C 3 202 2730 7.84 925 863 238.2
D 4 160 1838 6.62 689 630 182.3
D 1 3 1797 6.4 689 630 182.3
D 7 3 1755 6.17 689 630 182.3

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