ASTROSAT CZTI

Data Quality Report

Orbit 04491

Creation date: 2024-06-27T14:42:49.266067
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_253T03_9000000562_04491cztM0_level2.evt modeM0/AS1G05_253T03_9000000562_04491cztM0_level2_quad_clean.evt
Size (bytes)516,222,72078,312,960
Size492.3 MB 74.7 MB
Events in quadrant A4,102,409461,740
Events in quadrant B3,614,927470,959
Events in quadrant C3,398,363475,723
Events in quadrant D4,018,064451,109

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173112
B0156253
C0152751
D0171685

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73515146.992246%
B73503034.122449%
C73511902.584682%
D73493254.422370%

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 7366 7352 134 134 1.82% 1.82%
B 7366 7352 7 7 0.10% 0.10%
C 7366 7352 0 0 0.00% 0.00%
D 7366 7352 88 88 1.19% 1.20%

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 13 545463 3042.19 861 840 179.0
A 0 118 157735 876.39 861 840 179.0
A 7 16 39764 217.42 861 840 179.0
B 8 3 93578 547.39 880 857 169.4
B 15 204 61887 360.29 880 857 169.4
B 4 170 27318 156.21 880 857 169.4
C 14 48 23913 115.11 854 856 200.3
C 9 54 14608 68.65 854 856 200.3
C 9 16 7273 32.04 854 856 200.3
D 13 235 307915 1485.22 847 821 206.8
D 14 34 171573 825.82 847 821 206.8
D 2 136 86275 413.29 847 821 206.8

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