ASTROSAT CZTI

Data Quality Report

Orbit 09691

Creation date: 2024-06-27T15:49:25.049613
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/AS1A03_068T01_9000001380_09691cztM0_level2.evt modeM0/AS1A03_068T01_9000001380_09691cztM0_level2_quad_clean.evt
Size (bytes)984,024,000168,909,120
Size938.4 MB 161.1 MB
Events in quadrant A6,827,4341,032,575
Events in quadrant B6,935,3981,049,286
Events in quadrant C6,950,3861,021,273
Events in quadrant D8,085,266990,112

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03042
B03040
C03040
D03044

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030621199
B030718190
C031142185
D034243264

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A148041400.945690%
B148112011.357099%
C148071741.175120%
D147902161.460446%

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 16621 14891 0 0 0.00% 0.00%
B 16621 14893 1 1 0.01% 0.01%
C 16621 14893 34 34 0.20% 0.23%
D 16621 14890 71 71 0.43% 0.48%

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 0 226 16126 39.73 1772 1729 362.4
A 12 194 14307 34.71 1772 1729 362.4
A 13 251 10299 23.65 1772 1729 362.4
B 12 111 40675 113.36 1777 1732 343.5
B 11 111 33218 91.65 1777 1732 343.5
B 14 111 25717 69.82 1777 1732 343.5
C 14 234 160735 392.49 1726 1729 405.1
C 9 68 40168 94.88 1726 1729 405.1
C 10 22 16622 36.76 1726 1729 405.1
D 8 195 991930 2355.34 1709 1663 420.4
D 12 233 406139 962.04 1709 1663 420.4
D 1 52 60658 140.32 1709 1663 420.4

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