ASTROSAT CZTI

Data Quality Report

Orbit 03677

Creation date: 2024-06-27T14:32:22.444291
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/AS1G05_201T01_9000000478_03677cztM0_level2.evt modeM0/AS1G05_201T01_9000000478_03677cztM0_level2_quad_clean.evt
Size (bytes)438,684,48082,388,160
Size418.4 MB 78.6 MB
Events in quadrant A3,620,976522,054
Events in quadrant B3,575,894526,129
Events in quadrant C2,788,365520,807
Events in quadrant D2,896,969511,249

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146992
B0145891
C0123271
D0125991

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59362644.447439%
B59361342.257412%
C5936821.381402%
D5936971.634097%

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 7121 5937 104 104 1.46% 1.75%
B 7121 5937 25 25 0.35% 0.42%
C 7121 5937 8 8 0.11% 0.13%
D 7121 5937 12 12 0.17% 0.20%

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 0 118 465815 3196.92 711 695 145.5
A 13 251 207208 1419.43 711 695 145.5
A 13 164 94067 641.78 711 695 145.5
B 15 204 402645 2939.17 717 701 136.8
B 5 172 113956 828.16 717 701 136.8
B 3 0 83328 604.2 717 701 136.8
C 1 16 52443 321.0 692 697 161.2
C 9 247 16722 99.41 692 697 161.2
C 8 208 7212 40.41 692 697 161.2
D 8 195 79033 461.81 699 682 169.7
D 14 34 61852 360.54 699 682 169.7
D 2 37 50356 292.79 699 682 169.7

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
Veto Counter