ASTROSAT CZTI

Data Quality Report

Orbit 29135

Creation date: 2024-06-27T20:00:39.562508
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/AS1A10_099T01_9000004184_29135cztM0_level2.evt modeM0/AS1A10_099T01_9000004184_29135cztM0_level2_quad_clean.evt
Size (bytes)512,542,08066,844,800
Size488.8 MB 63.7 MB
Events in quadrant A3,462,594394,080
Events in quadrant B3,700,301399,359
Events in quadrant C3,625,500383,889
Events in quadrant D4,274,716374,683

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146102
B0151822
C0149692
D0173082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6768400.591017%
B6768670.989953%
C67681081.595745%
D67681472.171986%

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 7893 6769 0 0 0.00% 0.00%
B 7893 6769 8 8 0.10% 0.12%
C 7893 6769 0 0 0.00% 0.00%
D 7893 6769 86 86 1.09% 1.27%

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 11194 57.71 895 878 178.7
A 3 137 8532 42.82 895 878 178.7
A 15 174 8027 40.0 895 878 178.7
B 10 246 151130 907.0 882 861 165.7
B 0 190 45237 267.85 882 861 165.7
B 10 245 26475 154.6 882 861 165.7
C 14 238 140545 698.34 858 864 200.0
C 3 233 113818 564.72 858 864 200.0
C 2 114 15803 74.69 858 864 200.0
D 1 52 475795 2342.33 863 841 202.8
D 8 195 322667 1587.15 863 841 202.8
D 12 233 101069 494.29 863 841 202.8

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