ASTROSAT CZTI

Data Quality Report

Orbit 20230510_A12_101T04_9000005610_level2

Creation date: 2023-05-11T12:09:36.929004
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/AS1A12_101T04_9000005610cztM0_level2.fits modeM0/AS1A12_101T04_9000005610cztM0_level2_quad_clean.evt
Size (bytes)428,751,360395,046,720
Size408.9 MB 376.7 MB
Events in quadrant A2,695,8742,422,566
Events in quadrant B2,454,4302,333,316
Events in quadrant C2,241,9841,814,755
Events in quadrant D2,232,5522,040,123

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01057820
B01378980
C01937350
D01270210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09960
B09960
C09960
D09960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01980
B01980
C01980
D01980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A48850900.184237%
B4884939448.073860%
C488501212724.824974%
D4885022254.554759%

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 68542 48851 0 0 0.00% 0.00%
B 68542 48826 0 0 0.00% 0.00%
C 68542 48724 0 0 0.00% 0.00%
D 68542 48802 0 0 0.00% 0.00%

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 0 29 2234 8.84 704 659 178.2
A 7 110 2215 8.73 704 659 178.2
A 9 19 2171 8.48 704 659 178.2
B 2 9 2140 11.7 650 621 129.8
B 3 80 1807 9.14 650 621 129.8
B 2 8 1707 8.37 650 621 129.8
C 1 81 1831 8.32 593 555 153.4
C 1 80 1801 8.12 593 555 153.4
C 1 65 1498 6.15 593 555 153.4
D 4 160 1639 6.12 638 582 172.6
D 10 189 1625 6.04 638 582 172.6
D 6 62 1616 5.99 638 582 172.6

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