ASTROSAT CZTI

Data Quality Report

Orbit 18799

Creation date: 2024-06-27T17:54:49.290502
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_024T01_9000002810_18799cztM0_level2.evt modeM0/AS1A05_024T01_9000002810_18799cztM0_level2_quad_clean.evt
Size (bytes)378,843,84075,407,040
Size361.3 MB 71.9 MB
Events in quadrant A2,581,130481,844
Events in quadrant B2,658,934494,405
Events in quadrant C3,048,142471,659
Events in quadrant D2,816,755456,456

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01168
B01146
C01157
D01179

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113
B0102
C092
D091

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011648606
B011900671
C013342609
D012345625

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A541020.036969%
B541560.110803%
C5422350.645518%
D5407170.314407%

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 7306 5431 0 0 0.00% 0.00%
B 7306 5439 1 1 0.01% 0.02%
C 7306 5436 0 0 0.00% 0.00%
D 7306 5426 17 17 0.23% 0.31%

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 13 254 8986 62.19 669 655 134.0
A 0 226 5712 37.75 669 655 134.0
A 3 137 4970 32.21 669 655 134.0
B 12 111 14742 111.14 667 650 126.8
B 0 198 13086 98.08 667 650 126.8
B 11 111 12988 97.31 667 650 126.8
C 3 233 383518 2501.59 656 663 153.0
C 14 238 102515 665.5 656 663 153.0
C 13 61 4683 26.27 656 663 153.0
D 5 222 244026 1532.94 659 643 158.8
D 1 52 60055 374.2 659 643 158.8
D 2 234 22856 139.91 659 643 158.8

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