ASTROSAT CZTI

Data Quality Report

Orbit 31116

Creation date: 2024-06-27T20:23:33.097725
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_109T01_9000004492_31116cztM0_level2.evt modeM0/AS1A10_109T01_9000004492_31116cztM0_level2_quad_clean.evt
Size (bytes)532,572,48079,522,560
Size507.9 MB 75.8 MB
Events in quadrant A3,336,702497,737
Events in quadrant B5,265,138494,181
Events in quadrant C3,559,621472,380
Events in quadrant D3,511,350474,625

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139193
B0203362
C0145222
D0144882

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6731701.039964%
B67311281.901649%
C67311552.302778%
D6731791.173674%

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 7631 6732 1 1 0.01% 0.01%
B 7631 6732 2 2 0.03% 0.03%
C 7631 6732 27 27 0.35% 0.40%
D 7631 6732 22 22 0.29% 0.33%

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 8 144 35448 202.04 856 841 171.3
A 13 254 11606 62.85 856 841 171.3
A 3 137 8822 46.59 856 841 171.3
B 6 159 1892661 11598.24 840 819 163.1
B 0 230 29422 175.36 840 819 163.1
B 12 111 21061 124.1 840 819 163.1
C 0 10 196831 1034.3 809 815 189.5
C 14 238 130164 682.52 809 815 189.5
C 15 159 31207 160.37 809 815 189.5
D 8 195 300639 1529.89 825 803 196.0
D 13 174 72246 364.53 825 803 196.0
D 2 234 22650 111.47 825 803 196.0

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