ASTROSAT CZTI

Data Quality Report

Orbit 16519

Creation date: 2024-06-27T17:23:52.100869
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/AS1A05_174T01_9000002440_16519cztM0_level2.evt modeM0/AS1A05_174T01_9000002440_16519cztM0_level2_quad_clean.evt
Size (bytes)616,838,40085,510,080
Size588.3 MB 81.5 MB
Events in quadrant A3,957,413522,684
Events in quadrant B3,709,269540,410
Events in quadrant C6,758,057497,857
Events in quadrant D3,750,651509,088

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168142
B0159371
C0249781
D0164821

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74582383.191204%
B74581471.971038%
C7458114515.352641%
D74581552.078305%

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 8569 7459 121 121 1.41% 1.62%
B 8569 7459 3 3 0.04% 0.04%
C 8569 7459 753 753 8.79% 10.10%
D 8569 7459 30 30 0.35% 0.40%

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 500168 2780.12 887 868 179.6
A 15 223 29092 157.15 887 868 179.6
A 15 239 15848 83.41 887 868 179.6
B 15 35 53785 302.9 898 875 174.7
B 0 189 45899 257.75 898 875 174.7
B 10 16 41189 230.79 898 875 174.7
C 3 233 3361476 17297.55 825 831 194.3
C 14 238 123952 633.72 825 831 194.3
C 7 247 50443 255.36 825 831 194.3
D 12 110 173714 805.24 873 844 214.7
D 5 222 121736 563.12 873 844 214.7
D 10 70 120660 558.11 873 844 214.7

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