ASTROSAT CZTI

Data Quality Report

Orbit 31459

Creation date: 2024-06-27T20:28:46.716692
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/AS1T04_029T01_9000004582_31459cztM0_level2.evt modeM0/AS1T04_029T01_9000004582_31459cztM0_level2_quad_clean.evt
Size (bytes)660,988,80085,184,640
Size630.4 MB 81.2 MB
Events in quadrant A3,873,101519,476
Events in quadrant B6,293,607521,877
Events in quadrant C5,016,360497,050
Events in quadrant D4,301,338493,229

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164691
B0241283
C0199961
D0180691

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78863254.121227%
B78854766.036779%
C78855196.582118%
D78852523.195942%

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 7886 7886 0 0 0.00% 0.00%
B 7885 7885 2 2 0.03% 0.03%
C 7885 7885 13 13 0.16% 0.16%
D 7885 7885 0 0 0.00% 0.00%

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 13658 62.47 1003 982 202.9
A 3 137 11083 49.78 1003 982 202.9
A 0 226 8379 36.46 1003 982 202.9
B 6 159 2340356 12226.04 978 951 191.3
B 0 190 79978 413.0 978 951 191.3
B 12 111 24807 124.67 978 951 191.3
C 3 233 1017769 4568.85 946 952 222.6
C 14 238 163479 730.28 946 952 222.6
C 0 10 44208 194.36 946 952 222.6
D 8 195 623236 2684.25 969 941 231.8
D 2 234 27476 114.46 969 941 231.8
D 5 233 23687 98.11 969 941 231.8

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