ASTROSAT CZTI

Data Quality Report

Orbit 35284

Creation date: 2022-04-08T04:46:51.049424
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_082T01_9000005056_35284cztM0_level2.evt modeM0/AS1A11_082T01_9000005056_35284cztM0_level2_quad_clean.evt
Size (bytes)910,428,480118,177,920
Size868.3 MB 112.7 MB
Events in quadrant A3,515,036830,514
Events in quadrant B9,480,361720,631
Events in quadrant C5,601,088798,345
Events in quadrant D8,457,837693,539

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156893
B0334412
C0217712
D0304222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7687130.169117%
B7687208227.084688%
C76872292.979056%
D7687147719.214258%

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 9000 7688 0 0 0.00% 0.00%
B 8999 7687 1677 1677 18.64% 21.82%
C 9000 7688 220 220 2.44% 2.86%
D 9000 7688 1294 1294 14.38% 16.83%

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 112814 638.95 872 854 175.2
A 13 6 13932 74.63 872 854 175.2
A 13 254 13209 70.51 872 854 175.2
B 5 172 3864136 26010.68 771 751 148.5
B 5 236 2373838 15977.08 771 751 148.5
B 3 112 127543 853.64 771 751 148.5
C 15 159 664480 3343.16 845 849 198.5
C 0 10 587109 2953.39 845 849 198.5
C 4 254 581729 2926.29 845 849 198.5
D 7 80 2918996 15337.29 775 753 190.3
D 2 249 758019 3979.93 775 753 190.3
D 13 249 704017 3696.12 775 753 190.3

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