ASTROSAT CZTI

Data Quality Report

Orbit 46175

Creation date: 2024-06-27T23:20:02.276809
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/AS1T05_194T01_9000006180_46175cztM0_level2.fits modeM0/AS1T05_194T01_9000006180_46175cztM0_level2_quad_clean.evt
Size (bytes)678,870,720125,605,440
Size647.4 MB 119.8 MB
Events in quadrant A6,901,631859,617
Events in quadrant B5,468,040870,489
Events in quadrant C3,584,228832,849
Events in quadrant D8,551,871679,304

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0256841
B0215041
C0168051
D0310681

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80601652.047146%
B80603354.156328%
C8061300.372162%
D8061120514.948518%

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 8060 8060 33 33 0.41% 0.41%
B 8060 8060 111 111 1.38% 1.38%
C 8061 8061 11 11 0.14% 0.14%
D 8061 8061 917 917 11.38% 11.38%

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 3234051 17200.81 896 877 188.0
A 9 191 191826 1015.87 896 877 188.0
A 3 137 10886 53.25 896 877 188.0
B 3 112 1641429 9341.01 890 860 175.6
B 15 201 235613 1336.63 890 860 175.6
B 12 111 23079 126.51 890 860 175.6
C 3 233 61939 295.18 882 884 206.8
C 12 2 50566 240.19 882 884 206.8
C 14 254 30181 141.64 882 884 206.8
D 1 52 3063972 14771.83 826 798 207.4
D 2 37 650044 3130.92 826 798 207.4
D 2 249 560037 2696.87 826 798 207.4

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