ASTROSAT CZTI

Data Quality Report

Orbit 18727

Creation date: 2024-06-27T17:54:13.211642
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/AS1A05_226T06_9000002800_18727cztM0_level2.evt modeM0/AS1A05_226T06_9000002800_18727cztM0_level2_quad_clean.evt
Size (bytes)470,972,16073,457,280
Size449.2 MB 70.1 MB
Events in quadrant A3,456,614446,069
Events in quadrant B3,608,346451,356
Events in quadrant C3,408,822426,998
Events in quadrant D3,326,587424,895

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144112
B0148692
C0142792
D0142932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6808801.175088%
B68081181.733255%
C68081051.542303%
D6809550.807754%

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 8918 6810 1 1 0.01% 0.01%
B 8918 6810 8 8 0.09% 0.12%
C 8918 6810 0 0 0.00% 0.00%
D 8919 6811 3 3 0.03% 0.04%

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 15 192 15622 82.9 889 871 177.9
A 13 254 10757 55.56 889 871 177.9
A 0 13 10059 51.64 889 871 177.9
B 10 245 117808 694.13 881 860 168.5
B 3 64 24940 142.92 881 860 168.5
B 12 111 20119 114.31 881 860 168.5
C 14 238 131797 671.37 838 844 195.1
C 3 233 7765 35.48 838 844 195.1
C 13 61 5957 26.21 838 844 195.1
D 7 96 43850 203.56 855 829 211.3
D 10 70 29607 136.17 855 829 211.3
D 2 234 28160 129.32 855 829 211.3

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