ASTROSAT CZTI

Data Quality Report

Orbit 19228

Creation date: 2024-06-27T18:00:13.957979
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_007T06_9000002844_19228cztM0_level2.evt modeM0/AS1A05_007T06_9000002844_19228cztM0_level2_quad_clean.evt
Size (bytes)543,971,520112,279,680
Size518.8 MB 107.1 MB
Events in quadrant A3,498,642716,927
Events in quadrant B3,588,911735,440
Events in quadrant C4,519,899715,406
Events in quadrant D4,345,103697,992

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157942
B0158502
C0185793
D0182842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76901451.885566%
B76911762.288389%
C76902222.886866%
D76902202.860858%

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 8230 7693 2 2 0.02% 0.03%
B 8231 7694 4 4 0.05% 0.05%
C 8230 7693 0 0 0.00% 0.00%
D 8230 7693 119 119 1.45% 1.55%

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 9 143 41280 221.65 897 874 182.3
A 13 254 9919 49.61 897 874 182.3
A 0 226 7752 37.73 897 874 182.3
B 12 111 21736 121.59 902 879 171.5
B 7 220 18891 105.0 902 879 171.5
B 11 111 18852 104.77 902 879 171.5
C 3 233 1006707 4969.61 864 868 202.4
C 14 238 134988 662.65 864 868 202.4
C 13 61 6109 25.89 864 868 202.4
D 11 176 636736 2996.71 869 842 212.2
D 5 222 321616 1511.67 869 842 212.2
D 1 52 58298 270.76 869 842 212.2

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