ASTROSAT CZTI

Data Quality Report

Orbit 21601

Creation date: 2024-06-27T18:30:04.704301
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_094T01_9000003204_21601cztM0_level2.evt modeM0/AS1A05_094T01_9000003204_21601cztM0_level2_quad_clean.evt
Size (bytes)540,535,68089,320,320
Size515.5 MB 85.2 MB
Events in quadrant A3,439,464562,065
Events in quadrant B3,552,504569,652
Events in quadrant C3,454,270548,972
Events in quadrant D5,425,298512,504

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150141
B0151871
C0150231
D0210761

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73381451.976015%
B73391692.302766%
C73391872.548031%
D73396028.202752%

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 7488 7339 0 0 0.00% 0.00%
B 7489 7340 0 0 0.00% 0.00%
C 7489 7340 0 0 0.00% 0.00%
D 7489 7340 363 363 4.85% 4.95%

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 13 254 9891 49.98 892 871 180.5
A 3 137 7749 38.11 892 871 180.5
A 0 226 7613 37.36 892 871 180.5
B 0 190 32981 188.72 885 861 170.2
B 12 111 20978 118.2 885 861 170.2
B 0 230 20853 117.46 885 861 170.2
C 14 238 132053 655.39 851 854 200.2
C 13 61 6142 26.42 851 854 200.2
C 8 128 2594 8.69 851 854 200.2
D 1 52 1734400 8386.48 840 813 206.7
D 2 136 152271 732.7 840 813 206.7
D 13 174 145806 701.42 840 813 206.7

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