ASTROSAT CZTI

Data Quality Report

Orbit 35932

Creation date: 2022-06-09T02:58:12.980564
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/AS1A11_080T01_9000005146_35932cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35932cztM0_level2_quad_clean.evt
Size (bytes)492,514,56082,923,840
Size469.7 MB 79.1 MB
Events in quadrant A2,859,819553,065
Events in quadrant B5,265,876499,802
Events in quadrant C3,084,804542,135
Events in quadrant D3,318,330517,436

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119423
B0192072
C0123632
D0135502

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5700150.263158%
B5700107518.859649%
C57001021.789474%
D5700991.736842%

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 7162 5701 1 1 0.01% 0.02%
B 7162 5701 851 851 11.88% 14.93%
C 7162 5701 76 76 1.06% 1.33%
D 7162 5701 81 81 1.13% 1.42%

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 172152 1232.52 678 668 139.1
A 15 169 39685 280.43 678 668 139.1
A 13 6 11223 75.86 678 668 139.1
B 5 172 2635424 22498.28 602 588 117.1
B 5 255 220798 1880.32 602 588 117.1
B 0 245 14340 117.42 602 588 117.1
C 0 10 303399 1967.48 652 660 153.9
C 15 214 236553 1533.05 652 660 153.9
C 13 61 4296 23.63 652 660 153.9
D 1 52 325860 2016.89 654 637 161.2
D 2 250 109326 674.04 654 637 161.2
D 13 249 99429 612.67 654 637 161.2

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