ASTROSAT CZTI

Data Quality Report

Orbit 03449

Creation date: 2024-06-27T14:29:10.911576
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_167T01_9000000456_03449cztM0_level2.evt modeM0/AS1G05_167T01_9000000456_03449cztM0_level2_quad_clean.evt
Size (bytes)529,902,720108,020,160
Size505.4 MB 103.0 MB
Events in quadrant A3,685,168684,494
Events in quadrant B4,509,397687,974
Events in quadrant C3,737,399686,288
Events in quadrant D3,575,844659,466

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A12513186377920
B1-1-1
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166582
B0188021
C0168451
D0167171

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7955610.766813%
B79551421.785041%
C7955510.641106%
D7955430.540541%

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 7955 7955 1 1 0.01% 0.01%
B 7955 7955 31 31 0.39% 0.39%
C 7955 7955 2 2 0.03% 0.03%
D 7955 7955 11 11 0.14% 0.14%

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 8 15 13070 61.83 949 930 196.3
A 0 50 12118 56.99 949 930 196.3
A 12 194 10039 46.4 949 930 196.3
B 14 167 369796 1955.65 965 941 188.6
B 15 204 368673 1949.69 965 941 188.6
B 0 229 27121 138.8 965 941 188.6
C 1 192 77567 351.69 929 936 217.9
C 7 220 15570 67.16 929 936 217.9
C 13 61 7950 32.19 929 936 217.9
D 13 223 57772 250.98 917 890 226.6
D 2 37 22508 95.38 917 890 226.6
D 7 223 21911 92.75 917 890 226.6

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