ASTROSAT CZTI

Data Quality Report

Orbit 02468

Creation date: 2024-06-27T14:18:12.650176
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/AS1G02_018T06_9000000370_02468cztM0_level2.evt modeM0/AS1G02_018T06_9000000370_02468cztM0_level2_quad_clean.evt
Size (bytes)519,736,32095,788,800
Size495.7 MB 91.4 MB
Events in quadrant A3,293,722597,824
Events in quadrant B3,534,702612,901
Events in quadrant C5,049,267587,218
Events in quadrant D3,358,001585,802

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151693
B0156372
C0204162
D0157092

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7423310.417621%
B7423791.064260%
C74235126.897481%
D7423330.444564%

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 8493 7425 1 1 0.01% 0.01%
B 8493 7425 22 22 0.26% 0.30%
C 8493 7425 332 332 3.91% 4.47%
D 8493 7425 20 20 0.24% 0.27%

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 8 15 29047 163.59 844 825 172.5
A 12 194 9518 50.39 844 825 172.5
A 0 226 9012 47.46 844 825 172.5
B 10 244 117023 698.31 862 841 166.4
B 4 48 54360 321.67 862 841 166.4
B 5 172 21962 126.94 862 841 166.4
C 14 223 1809755 9560.42 801 802 189.2
C 10 82 50044 260.25 801 802 189.2
C 10 65 31175 160.52 801 802 189.2
D 13 53 51905 262.68 811 791 194.6
D 12 79 47450 239.78 811 791 194.6
D 2 14 44775 226.04 811 791 194.6

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