ASTROSAT CZTI

Data Quality Report

Orbit 08471

Creation date: 2024-06-27T15:33:06.670792
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/AS1A03_074T01_9000001192_08471cztM0_level2.evt modeM0/AS1A03_074T01_9000001192_08471cztM0_level2_quad_clean.evt
Size (bytes)579,049,920101,318,400
Size552.2 MB 96.6 MB
Events in quadrant A4,125,282621,114
Events in quadrant B4,309,125622,269
Events in quadrant C3,993,076633,292
Events in quadrant D4,549,013617,957

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178695
B0181832
C0176212
D0192702

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82434395.325731%
B82444435.373605%
C82443233.918001%
D82443954.791363%

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 8869 8245 4 4 0.05% 0.05%
B 8869 8245 20 20 0.23% 0.24%
C 8869 8245 1 1 0.01% 0.01%
D 8869 8245 45 45 0.51% 0.55%

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 4 2 95918 439.41 1042 1018 216.0
A 13 14 13732 58.87 1042 1018 216.0
A 0 226 9459 39.08 1042 1018 216.0
B 4 81 112476 546.95 1034 1008 203.8
B 0 214 83149 403.05 1034 1008 203.8
B 11 51 49884 239.82 1034 1008 203.8
C 9 54 32773 134.61 1012 1018 235.9
C 13 61 7669 28.19 1012 1018 235.9
C 8 128 5971 21.0 1012 1018 235.9
D 13 105 434148 1772.24 1015 990 244.4
D 1 52 61440 247.33 1015 990 244.4
D 2 152 41926 167.49 1015 990 244.4

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