ASTROSAT CZTI

Data Quality Report

Orbit 31048

Creation date: 2024-06-27T20:22:43.605481
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_071T63_9000004486_31048cztM0_level2.evt modeM0/AS1A10_071T63_9000004486_31048cztM0_level2_quad_clean.evt
Size (bytes)570,703,68093,971,520
Size544.3 MB 89.6 MB
Events in quadrant A3,188,864629,913
Events in quadrant B5,375,713628,455
Events in quadrant C3,363,251597,530
Events in quadrant D4,946,727567,355

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132591
B0200701
C0137421
D0187071

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6055390.644096%
B60561382.278732%
C60561442.377807%
D60551312.163501%

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 7394 6054 0 0 0.00% 0.00%
B 7395 6055 33 33 0.45% 0.55%
C 7395 6055 19 19 0.26% 0.31%
D 7394 6054 113 113 1.53% 1.87%

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 10907 61.86 826 813 163.2
A 3 137 7591 41.54 826 813 163.2
A 0 226 7054 38.25 826 813 163.2
B 6 159 1786116 11677.9 817 798 152.9
B 4 52 91988 596.48 817 798 152.9
B 5 172 72990 472.21 817 798 152.9
C 14 238 128191 696.22 788 796 183.0
C 0 10 111535 605.19 788 796 183.0
C 1 16 23513 124.15 788 796 183.0
D 8 195 1340076 7198.72 791 772 186.0
D 1 52 311198 1668.53 791 772 186.0
D 13 249 159852 855.05 791 772 186.0

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