ASTROSAT CZTI

Data Quality Report

Orbit 45987

Creation date: 2024-06-27T23:18:28.720158
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_017T01_9000006148_45987cztM0_level2.fits modeM0/AS1A13_017T01_9000006148_45987cztM0_level2_quad_clean.evt
Size (bytes)662,235,840122,840,640
Size631.6 MB 117.1 MB
Events in quadrant A6,603,927826,279
Events in quadrant B7,857,751791,519
Events in quadrant C3,752,677818,584
Events in quadrant D5,687,815733,436

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246640
B0287990
C0171680
D0223990

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79031101.391877%
B790392511.704416%
C7904921.163968%
D79043714.693826%

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 7903 7903 13 13 0.16% 0.16%
B 7902 7902 656 656 8.30% 8.30%
C 7904 7904 90 90 1.14% 1.14%
D 7904 7904 342 342 4.33% 4.33%

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 10 83 2990557 16156.72 881 862 185.0
A 15 223 196240 1055.85 881 862 185.0
A 13 254 11238 56.07 881 862 185.0
B 3 112 4406307 25910.54 854 827 170.0
B 12 48 56863 329.57 854 827 170.0
B 12 111 22297 126.27 854 827 170.0
C 14 254 398136 1952.4 859 863 203.5
C 13 61 5820 24.36 859 863 203.5
C 11 16 5125 20.95 859 863 203.5
D 1 52 1292530 6134.62 845 816 210.6
D 12 2 751371 3564.54 845 816 210.6
D 2 249 185259 875.96 845 816 210.6

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