ASTROSAT CZTI

Data Quality Report

Orbit 20220319_T05_010T01_9000005016_level2

Creation date: 2022-06-16T15:32:16.028632
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/AS1T05_010T01_9000005016cztM0_level2_bc.evt modeM0/AS1T05_010T01_9000005016cztM0_level2_quad_clean.evt
Size (bytes)7,240,173,1202,275,240,320
Size6.7 GB 2.1 GB
Events in quadrant A37,615,29214,745,904
Events in quadrant B44,769,85114,938,990
Events in quadrant C43,809,06714,546,442
Events in quadrant D82,012,09213,532,155

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03394950
B03730400
C03461990
D04965610

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06400
B06400
C06400
D06410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033240
B033240
C033240
D033240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1628894200.257844%
B16288928241.733696%
C16288910770.661186%
D16288965464.018688%

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 231198 162922 41 41 0.02% 0.03%
B 231199 162883 101 101 0.04% 0.06%
C 231199 162892 174 174 0.08% 0.11%
D 231198 162885 516 516 0.22% 0.32%

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 1647792 848.64 8851 8767 1931.4
A 15 223 662673 338.57 8851 8767 1931.4
A 13 6 295514 148.47 8851 8767 1931.4
B 5 172 3305509 1899.43 8875 8716 1735.7
B 5 31 1741091 998.1 8875 8716 1735.7
B 4 232 1388281 794.83 8875 8716 1735.7
C 15 214 6411952 3252.88 8619 8611 1968.5
C 0 10 2331132 1179.83 8619 8611 1968.5
C 14 67 689284 345.78 8619 8611 1968.5
D 8 195 29160702 14317.24 8502 8303 2036.2
D 10 118 3716940 1821.37 8502 8303 2036.2
D 13 249 2405211 1177.16 8502 8303 2036.2

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