ASTROSAT CZTI

Data Quality Report

Orbit 46551

Creation date: 2024-06-27T23:24:38.036841
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_091T08_9000006228_46551cztM0_level2.fits modeM0/AS1A13_091T08_9000006228_46551cztM0_level2_quad_clean.evt
Size (bytes)673,513,920126,959,040
Size642.3 MB 121.1 MB
Events in quadrant A7,301,910842,156
Events in quadrant B4,630,039884,920
Events in quadrant C4,439,288844,758
Events in quadrant D7,929,733706,270

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262941
B0191271
C0190441
D0290851

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81394375.369210%
B81393153.870254%
C81392763.391080%
D8139111713.724045%

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 8159 8139 2 2 0.02% 0.02%
B 8159 8139 39 39 0.48% 0.48%
C 8159 8139 116 116 1.42% 1.43%
D 8159 8139 882 882 10.81% 10.84%

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 3587628 18179.1 940 916 197.3
A 9 191 37197 183.89 940 916 197.3
A 13 254 13812 65.36 940 916 197.3
B 2 2 420576 2254.04 937 907 186.2
B 0 189 156149 833.8 937 907 186.2
B 3 112 105147 559.87 937 907 186.2
C 1 241 492765 2263.04 924 928 217.3
C 14 254 267459 1226.36 924 928 217.3
C 2 14 29330 130.68 924 928 217.3
D 1 52 1675601 7404.54 885 854 226.2
D 13 249 1162892 5137.71 885 854 226.2
D 5 33 1062426 4693.52 885 854 226.2

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