ASTROSAT CZTI

Data Quality Report

Orbit 12147

Creation date: 2024-06-27T16:23:03.160599
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/AS1G08_065T01_9000001796_12147cztM0_level2.evt modeM0/AS1G08_065T01_9000001796_12147cztM0_level2_quad_clean.evt
Size (bytes)573,845,760108,239,040
Size547.3 MB 103.2 MB
Events in quadrant A3,916,149699,411
Events in quadrant B5,094,427683,927
Events in quadrant C3,611,356684,572
Events in quadrant D4,227,161667,085

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168723
B0203772
C0161682
D0178402

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78111341.715529%
B78114285.479452%
C7811821.049802%
D78111381.766739%

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 9237 7814 5 5 0.05% 0.06%
B 9237 7814 138 138 1.49% 1.77%
C 9237 7814 1 1 0.01% 0.01%
D 9237 7814 32 32 0.35% 0.41%

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 81613 425.83 941 922 189.5
A 15 239 57641 299.32 941 922 189.5
A 13 248 35773 183.92 941 922 189.5
B 4 239 704506 3991.48 927 902 176.3
B 3 64 236598 1337.08 927 902 176.3
B 11 51 154320 870.32 927 902 176.3
C 15 208 9899 42.14 920 922 213.0
C 13 61 6799 27.59 920 922 213.0
C 0 207 5891 23.33 920 922 213.0
D 1 52 232100 1060.62 916 891 218.0
D 8 195 144423 658.42 916 891 218.0
D 10 157 92791 421.57 916 891 218.0

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