ASTROSAT CZTI

Data Quality Report

Orbit 19356

Creation date: 2024-06-27T18:01:46.616220
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_204T01_9000002856_19356cztM0_level2.evt modeM0/AS1A05_204T01_9000002856_19356cztM0_level2_quad_clean.evt
Size (bytes)572,469,120100,428,480
Size545.9 MB 95.8 MB
Events in quadrant A3,388,357660,298
Events in quadrant B3,626,970660,426
Events in quadrant C3,416,818636,897
Events in quadrant D6,416,068581,445

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148813
B0155292
C0148812
D0239422

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7209230.319046%
B7210660.915395%
C7210720.998613%
D721091612.704577%

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 7639 7210 0 0 0.00% 0.00%
B 7640 7211 12 12 0.16% 0.17%
C 7640 7211 0 0 0.00% 0.00%
D 7640 7210 734 734 9.61% 10.18%

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 14 111 12565 66.11 874 858 177.1
A 13 254 9592 49.32 874 858 177.1
A 0 226 7779 39.09 874 858 177.1
B 7 220 86018 508.09 869 844 167.6
B 15 32 52100 305.76 869 844 167.6
B 0 229 24835 143.11 869 844 167.6
C 14 238 129587 651.91 839 843 197.5
C 3 233 14181 67.54 839 843 197.5
C 13 61 5804 25.12 839 843 197.5
D 10 66 2008965 10152.63 815 793 197.8
D 7 238 554112 2797.39 815 793 197.8
D 11 176 470720 2375.79 815 793 197.8

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