ASTROSAT CZTI

Data Quality Report

Orbit 09877

Creation date: 2024-06-27T15:51:45.888757
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_117T06_9000001404_09877cztM0_level2.evt modeM0/AS1A03_117T06_9000001404_09877cztM0_level2_quad_clean.evt
Size (bytes)602,418,24085,392,000
Size574.5 MB 81.4 MB
Events in quadrant A4,353,798505,077
Events in quadrant B4,112,659519,198
Events in quadrant C4,737,795497,484
Events in quadrant D4,467,771478,619

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01869541
B01784431
C01997478
D01938933

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84354425.240071%
B84354074.825133%
C84255116.065282%
D84354545.382336%

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 8765 8450 47 47 0.54% 0.56%
B 8765 8450 1 1 0.01% 0.01%
C 8763 8449 90 90 1.03% 1.07%
D 8765 8450 138 138 1.57% 1.63%

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 15 174 185453 865.95 1033 1007 213.0
A 15 239 152160 709.65 1033 1007 213.0
A 13 14 26695 120.6 1033 1007 213.0
B 4 81 38168 182.11 1034 1007 204.1
B 0 85 31040 147.18 1034 1007 204.1
B 12 111 25113 118.13 1034 1007 204.1
C 4 254 813139 3441.02 996 998 236.0
C 8 128 14693 58.03 996 998 236.0
C 14 67 9024 34.01 996 998 236.0
D 1 52 629538 2415.53 993 969 260.2
D 2 234 31080 115.71 993 969 260.2
D 2 14 18220 66.29 993 969 260.2

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