ASTROSAT CZTI

Data Quality Report

Orbit 30320

Creation date: 2024-06-27T20:13:39.022570
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_071T23_9000004356_30320cztM0_level2.evt modeM0/AS1A10_071T23_9000004356_30320cztM0_level2_quad_clean.evt
Size (bytes)668,805,12096,998,400
Size637.8 MB 92.5 MB
Events in quadrant A4,636,870626,801
Events in quadrant B6,065,753634,351
Events in quadrant C5,559,215596,024
Events in quadrant D3,532,183604,707

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182382
B0226842
C0211702
D0146962

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68183284.810795%
B68172984.371424%
C68175017.349274%
D6817620.909491%

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 7733 6818 153 153 1.98% 2.24%
B 7732 6817 65 65 0.84% 0.95%
C 7732 6817 244 244 3.16% 3.58%
D 7732 6817 9 9 0.12% 0.13%

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 14 239 1315776 7591.55 853 833 173.2
A 8 192 19656 108.67 853 833 173.2
A 13 254 11764 63.11 853 833 173.2
B 6 159 1861197 11416.48 839 818 163.0
B 6 36 836836 5130.34 839 818 163.0
B 0 190 38566 231.65 839 818 163.0
C 3 233 2203791 11488.27 814 817 191.8
C 14 238 143343 743.26 814 817 191.8
C 14 254 20519 102.74 814 817 191.8
D 8 195 126816 638.67 838 815 197.3
D 13 104 110039 553.63 838 815 197.3
D 2 250 57546 287.56 838 815 197.3

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