ASTROSAT CZTI

Data Quality Report

Orbit 47818

Creation date: 2024-08-01T04:49:11.520580
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_081T01_9000006354_47818cztM0_level2.fits modeM0/AS1A13_081T01_9000006354_47818cztM0_level2_quad_clean.evt
Size (bytes)518,440,320106,076,160
Size494.4 MB 101.2 MB
Events in quadrant A6,914,659729,161
Events in quadrant B3,286,912734,543
Events in quadrant C2,801,493708,190
Events in quadrant D5,662,499567,640

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250084
B0148471
C0136791
D0218211

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67732123.130075%
B6774620.915264%
C6774160.236197%
D677488012.990847%

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 7668 6774 79 79 1.03% 1.17%
B 7669 6775 16 16 0.21% 0.24%
C 7669 6775 2 2 0.03% 0.03%
D 7669 6774 883 883 11.51% 13.04%

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 3860582 25930.22 718 702 148.9
A 14 235 202838 1357.93 718 702 148.9
A 0 31 34916 229.85 718 702 148.9
B 0 200 328615 2329.13 716 692 140.8
B 10 7 66740 469.11 716 692 140.8
B 5 255 23951 165.2 716 692 140.8
C 14 254 12604 70.73 711 714 168.1
C 12 2 5770 30.08 711 714 168.1
C 13 61 4551 22.82 711 714 168.1
D 12 2 1901138 11488.05 654 632 165.4
D 2 165 934465 5644.77 654 632 165.4
D 13 29 81777 490.5 654 632 165.4

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