ASTROSAT CZTI

Data Quality Report

Orbit 20210614_A10_071T28_9000004464_level2

Creation date: 2021-06-16T14:39:55.316714
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/AS1A10_071T28_9000004464cztM0_level2_bc.evt modeM0/AS1A10_071T28_9000004464cztM0_level2_quad_clean.evt
Size (bytes)3,450,720,960868,752,000
Size3.2 GB 828.5 MB
Events in quadrant A15,291,8845,588,544
Events in quadrant B40,359,1105,519,023
Events in quadrant C16,419,7215,261,106
Events in quadrant D27,682,4765,147,714

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01462920
B02299280
C01527750
D01870630

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014300
B014300
C014300
D014300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A699329721.389922%
B6993229354.196934%
C6993221163.025796%
D6993121443.065879%

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 81397 69926 2 2 0.00% 0.00%
B 81397 69921 87 87 0.11% 0.12%
C 81397 69924 66 66 0.08% 0.09%
D 81397 69926 109 109 0.13% 0.16%

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 0 31 254086 302.31 3876 3815 827.9
A 13 254 116608 136.25 3876 3815 827.9
A 11 47 37275 40.42 3876 3815 827.9
B 6 159 18921858 25915.53 3884 3799 730.0
B 6 36 4776822 6538.48 3884 3799 730.0
B 0 190 476072 646.96 3884 3799 730.0
C 0 10 1430742 1660.54 3664 3655 859.4
C 3 233 391208 450.95 3664 3655 859.4
C 1 16 262030 300.64 3664 3655 859.4
D 8 195 6510489 7720.24 3687 3598 842.8
D 12 218 2068710 2450.19 3687 3598 842.8
D 1 52 1828676 2165.4 3687 3598 842.8

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