ASTROSAT CZTI

Data Quality Report

Orbit 11164

Creation date: 2024-06-27T16:09:13.752186
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/AS1A04_042T01_9000001630_11164cztM0_level2.evt modeM0/AS1A04_042T01_9000001630_11164cztM0_level2_quad_clean.evt
Size (bytes)760,726,08084,136,320
Size725.5 MB 80.2 MB
Events in quadrant A5,952,075515,203
Events in quadrant B4,722,168539,437
Events in quadrant C3,215,605543,521
Events in quadrant D8,684,557469,625

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223794
B0185041
C0144011
D0305831

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A687684712.318208%
B68775868.521157%
C68771382.006689%
D6877112216.315254%

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 6897 6878 382 382 5.54% 5.55%
B 6897 6878 217 217 3.15% 3.15%
C 6897 6878 4 4 0.06% 0.06%
D 6897 6878 940 940 13.63% 13.67%

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 14 238 1776586 10602.85 809 790 167.5
A 8 15 728192 4343.14 809 790 167.5
A 8 5 275660 1641.18 809 790 167.5
B 4 239 1019729 6375.11 826 804 159.8
B 10 16 133366 829.4 826 804 159.8
B 4 80 87526 542.59 826 804 159.8
C 14 234 25669 130.17 812 814 190.9
C 8 128 9100 43.39 812 814 190.9
C 13 61 5974 27.02 812 814 190.9
D 10 157 3430769 18068.96 777 751 189.8
D 12 16 1914789 10082.94 777 751 189.8
D 8 195 111589 583.88 777 751 189.8

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