ASTROSAT CZTI

Data Quality Report

Orbit 44418

Creation date: 2024-06-27T23:03:22.716652
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_008T08_9000005998_44418cztM0_level2.fits modeM0/AS1A13_008T08_9000005998_44418cztM0_level2_quad_clean.evt
Size (bytes)598,867,200108,576,000
Size571.1 MB 103.5 MB
Events in quadrant A5,515,474751,884
Events in quadrant B3,849,703778,589
Events in quadrant C4,370,473727,778
Events in quadrant D7,902,321552,435

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218641
B0159341
C0178011
D0281841

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68352733.994148%
B68361632.384435%
C68363244.739614%
D6836162523.771211%

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 7735 6836 99 99 1.28% 1.45%
B 7736 6837 62 62 0.80% 0.91%
C 7736 6837 189 189 2.44% 2.76%
D 7736 6837 1431 1431 18.50% 20.93%

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 1902020 11622.55 785 768 163.6
A 15 223 445017 2715.74 785 768 163.6
A 13 248 66289 400.54 785 768 163.6
B 5 235 355456 2274.19 788 765 156.0
B 0 229 129446 825.07 788 765 156.0
B 0 155 100465 639.25 788 765 156.0
C 12 16 907045 5122.13 750 755 176.9
C 14 254 243005 1369.14 750 755 176.9
C 2 14 210552 1185.72 750 755 176.9
D 5 222 2128637 12244.98 687 665 173.8
D 4 221 955927 5496.86 687 665 173.8
D 2 249 935904 5381.64 687 665 173.8

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