ASTROSAT CZTI

Data Quality Report

Orbit 45961

Creation date: 2024-06-27T23:18:12.862990
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_071T06_9000006146_45961cztM0_level2.fits modeM0/AS1A13_071T06_9000006146_45961cztM0_level2_quad_clean.evt
Size (bytes)2,149,943,040267,632,640
Size2.0 GB 255.2 MB
Events in quadrant A16,879,5071,906,076
Events in quadrant B29,219,0591,396,973
Events in quadrant C8,185,9271,924,898
Events in quadrant D23,861,1971,583,883

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0625413
B09992910
C0385583
D0841683

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A187186143.280265%
B18717655235.005610%
C187181931.031093%
D18718247613.227909%

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 20078 18718 82 82 0.41% 0.44%
B 20077 18717 5280 5280 26.30% 28.21%
C 20078 18720 11 11 0.05% 0.06%
D 20078 18719 2556 2556 12.73% 13.65%

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 7909064 18459.89 2064 2018 428.3
A 0 247 581751 1353.45 2064 2018 428.3
A 14 235 242171 560.66 2064 2018 428.3
B 3 112 20755660 57654.09 1849 1791 360.0
B 4 21 749761 2077.85 1849 1791 360.0
B 5 172 115556 316.04 1849 1791 360.0
C 3 9 51822 103.22 2052 2060 482.1
C 12 249 42650 84.19 2052 2060 482.1
C 12 2 36382 71.19 2052 2060 482.1
D 11 241 12988744 25923.35 1976 1914 501.0
D 12 2 921686 1835.98 1976 1914 501.0
D 1 52 827552 1648.08 1976 1914 501.0

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