ASTROSAT CZTI

Data Quality Report

Orbit 13827

Creation date: 2024-06-27T16:46:37.584482
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/AS1A04_199T01_9000002040_13827cztM0_level2.evt modeM0/AS1A04_199T01_9000002040_13827cztM0_level2_quad_clean.evt
Size (bytes)591,811,20080,928,000
Size564.4 MB 77.2 MB
Events in quadrant A3,664,091485,556
Events in quadrant B3,750,715492,873
Events in quadrant C3,671,134481,434
Events in quadrant D6,312,845452,990

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160532
B0162041
C0160551
D0241261

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77393444.445019%
B77393754.845587%
C77392813.630960%
D77393394.380411%

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 7785 7740 0 0 0.00% 0.00%
B 7785 7740 7 7 0.09% 0.09%
C 7785 7742 2 2 0.03% 0.03%
D 7785 7740 27 27 0.35% 0.35%

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 1 162 15577 75.67 941 916 193.8
A 8 15 15410 74.81 941 916 193.8
A 0 226 8917 41.29 941 916 193.8
B 10 244 22453 117.72 943 918 182.9
B 12 111 22074 115.65 943 918 182.9
B 11 111 18818 97.85 943 918 182.9
C 3 233 56080 255.44 925 930 215.9
C 13 61 6788 27.13 925 930 215.9
C 14 234 5388 20.65 925 930 215.9
D 10 157 2167671 8850.87 908 887 244.8
D 1 52 403086 1642.9 908 887 244.8
D 8 195 259979 1058.34 908 887 244.8

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