ASTROSAT CZTI

Data Quality Report

Orbit 48074

Creation date: 2024-08-19T12:24:41.729724
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/AS1A13_073T04_9000006396_48074cztM0_level2.fits modeM0/AS1A13_073T04_9000006396_48074cztM0_level2_quad_clean.evt
Size (bytes)506,502,720102,962,880
Size483.0 MB 98.2 MB
Events in quadrant A8,026,199878,771
Events in quadrant B1,410,149219
Events in quadrant C3,850,066870,828
Events in quadrant D4,807,555789,311

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0294332
B087782
C0177942
D0201852

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83142442.934809%
B8314831199.963916%
C8315540.649429%
D83152182.621768%

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 8634 8316 5 5 0.06% 0.06%
B 8633 8313 0 0 0.00% 0.00%
C 8635 8317 35 35 0.41% 0.42%
D 8635 8317 163 163 1.89% 1.96%

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 10 83 4347408 22203.49 934 914 195.8
A 0 31 56977 286.39 934 914 195.8
A 13 254 15948 76.8 934 914 195.8
B 2 177 1149492 80895.61 60 58 14.2
B 4 21 18406 1291.31 60 58 14.2
B 0 198 1913 130.55 60 58 14.2
C 15 208 185622 836.67 927 929 220.7
C 10 20 20558 88.92 927 929 220.7
C 14 254 19923 86.04 927 929 220.7
D 2 249 631099 2732.55 911 882 230.6
D 2 165 340222 1471.34 911 882 230.6
D 13 84 113963 490.31 911 882 230.6

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