ASTROSAT CZTI

Data Quality Report

Orbit 34351

Creation date: 2022-02-04T03:19:46.864066
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/AS1A05_019T01_9000004906_34351cztM0_level2.evt modeM0/AS1A05_019T01_9000004906_34351cztM0_level2_quad_clean.evt
Size (bytes)686,283,84058,161,600
Size654.5 MB 55.5 MB
Events in quadrant A2,375,333396,255
Events in quadrant B3,101,654397,050
Events in quadrant C4,000,436382,904
Events in quadrant D10,974,008238,557

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101022
B0122831
C0148401
D0359811

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4922130.264120%
B49221372.783421%
C49224549.223893%
D4922349170.926453%

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 7074 4923 6 6 0.08% 0.12%
B 7074 4923 93 93 1.31% 1.89%
C 7074 4923 388 388 5.48% 7.88%
D 7073 4922 3404 3404 48.13% 69.16%

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 10 83 32231 266.51 594 583 118.8
A 9 143 25504 209.86 594 583 118.8
A 13 6 14737 119.19 594 583 118.8
B 5 172 577089 5130.92 591 576 112.4
B 5 255 43098 378.44 591 576 112.4
B 4 251 42680 374.72 591 576 112.4
C 14 254 1405557 10809.23 565 571 130.0
C 15 214 202136 1550.74 565 571 130.0
C 0 10 131432 1006.78 565 571 130.0
D 7 223 6725704 66544.72 382 374 101.1
D 12 235 1401967 13868.26 382 374 101.1
D 8 195 808482 7995.94 382 374 101.1

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