ASTROSAT CZTI

Data Quality Report

Orbit 20201005_T03_247T01_9000003914_level2

Creation date: 2021-01-07T20:17:49.544530
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1T03_247T01_9000003914cztM0_level2_bc.evt modeM0/AS1T03_247T01_9000003914cztM0_level2_quad_clean.evt
Size (bytes)654,762,240335,462,400
Size624.4 MB 319.9 MB
Events in quadrant A4,033,0512,236,043
Events in quadrant B4,273,5732,283,075
Events in quadrant C3,809,5052,198,272
Events in quadrant D6,420,3912,143,289

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0392080
B0398030
C0392140
D0475250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A188861580.836599%
B188862121.122525%
C188862601.376681%
D188864182.213280%

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 19886 18888 2 2 0.01% 0.01%
B 19886 18886 6 6 0.03% 0.03%
C 19886 18886 12 12 0.06% 0.06%
D 19886 18886 32 32 0.16% 0.17%

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 14 235 228544 1084.15 955 936 209.9
A 13 34 62719 294.29 955 936 209.9
A 0 13 29080 134.06 955 936 209.9
B 3 112 283705 1511.26 967 942 187.1
B 3 64 90540 478.87 967 942 187.1
B 5 172 68504 361.09 967 942 187.1
C 15 208 156696 699.24 929 923 222.8
C 2 16 52472 231.4 929 923 222.8
C 8 222 14091 59.11 929 923 222.8
D 1 52 1323885 5623.22 933 907 235.3
D 7 38 606257 2573.0 933 907 235.3
D 2 250 391042 1658.24 933 907 235.3

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