ASTROSAT CZTI

Data Quality Report

Orbit 03949

Creation date: 2024-06-27T14:35:35.268993
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/AS1G05_172T01_9000000502_03949cztM0_level2.evt modeM0/AS1G05_172T01_9000000502_03949cztM0_level2_quad_clean.evt
Size (bytes)75,412,80010,751,040
Size71.9 MB 10.3 MB
Events in quadrant A367,48373,914
Events in quadrant B392,11474,194
Events in quadrant C303,67772,447
Events in quadrant D1,177,09054,905

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014641
B015441
C012781
D038921

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A595122.016807%
B595172.857143%
C59530.504202%
D59529649.747899%

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 595 595 4 4 0.67% 0.67%
B 595 595 1 1 0.17% 0.17%
C 595 595 0 0 0.00% 0.00%
D 595 595 306 306 51.43% 51.43%

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 0 199 17466 924.26 80 78 18.8
A 0 118 11296 596.29 80 78 18.8
A 0 50 10255 540.96 80 78 18.8
B 10 16 44211 2477.87 80 79 17.8
B 4 48 10978 611.94 80 79 17.8
B 15 204 9068 504.7 80 79 17.8
C 12 4 6935 354.24 74 75 19.4
C 1 16 2507 125.59 74 75 19.4
C 13 61 725 33.57 74 75 19.4
D 9 82 921345 53935.26 61 59 17.1
D 2 232 8839 514.01 61 59 17.1
D 13 248 5268 304.95 61 59 17.1

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
Veto Counter