ASTROSAT CZTI

Data Quality Report

Orbit 06661

Creation date: 2024-06-27T15:10:00.523232
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/AS1A02_103T01_9000000904_06661cztM0_level2.evt modeM0/AS1A02_103T01_9000000904_06661cztM0_level2_quad_clean.evt
Size (bytes)621,653,76094,907,520
Size592.9 MB 90.5 MB
Events in quadrant A3,392,458612,469
Events in quadrant B3,631,405620,610
Events in quadrant C3,316,693612,167
Events in quadrant D7,984,148513,292

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153863
B0158722
C0152632
D0289182

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74021211.634693%
B74021411.904891%
C7402470.634964%
D7402157221.237503%

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 7942 7403 10 10 0.13% 0.14%
B 7942 7403 9 9 0.11% 0.12%
C 7942 7403 0 0 0.00% 0.00%
D 7942 7403 1241 1241 15.63% 16.76%

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 40249 221.2 865 846 178.1
A 0 226 8048 40.43 865 846 178.1
A 12 194 7981 40.05 865 846 178.1
B 0 228 104371 612.92 873 851 168.9
B 4 81 60734 354.55 873 851 168.9
B 4 173 37112 214.69 873 851 168.9
C 9 16 28970 142.64 841 847 197.2
C 13 61 6751 29.95 841 847 197.2
C 9 247 4931 20.71 841 847 197.2
D 2 33 4005596 22314.45 727 704 179.5
D 8 195 916780 5104.19 727 704 179.5
D 2 152 228272 1267.96 727 704 179.5

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