ASTROSAT CZTI

Data Quality Report

Orbit 10987

Creation date: 2024-06-27T16:06:35.837800
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/AS1G08_027T06_9000001594_10987cztM0_level2.evt modeM0/AS1G08_027T06_9000001594_10987cztM0_level2_quad_clean.evt
Size (bytes)488,485,440101,903,040
Size465.9 MB 97.2 MB
Events in quadrant A3,243,100686,680
Events in quadrant B4,665,106668,590
Events in quadrant C2,907,221666,316
Events in quadrant D3,564,412638,856

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134002
B0179061
C0126641
D0145291

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61021602.622091%
B61025488.980662%
C6102931.524090%
D61022514.113405%

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 7222 6102 9 9 0.12% 0.15%
B 7222 6102 290 290 4.02% 4.75%
C 7222 6102 1 1 0.01% 0.02%
D 7222 6102 101 101 1.40% 1.66%

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 5 171114 1077.24 780 767 158.1
A 15 223 36774 227.7 780 767 158.1
A 8 15 19021 115.44 780 767 158.1
B 4 239 1510836 10604.79 753 736 142.4
B 0 214 80859 562.67 753 736 142.4
B 0 229 43544 300.62 753 736 142.4
C 1 3 13138 72.65 740 746 170.6
C 12 4 9469 51.14 740 746 170.6
C 13 61 5500 27.87 740 746 170.6
D 1 52 258328 1436.33 742 721 179.4
D 10 253 136407 756.54 742 721 179.4
D 13 104 105691 585.27 742 721 179.4

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