ASTROSAT CZTI

Data Quality Report

Orbit 43685

Creation date: 2024-06-27T22:54:30.100423
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_018T01_9000005896_43685cztM0_level2.fits modeM0/AS1A12_018T01_9000005896_43685cztM0_level2_quad_clean.evt
Size (bytes)1,388,928,960105,923,520
Size1.3 GB 101.0 MB
Events in quadrant A15,841,619744,660
Events in quadrant B4,802,394933,819
Events in quadrant C20,379,765216,723
Events in quadrant D9,715,369702,100

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0531122
B0204242
C0665032
D0349572

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8767250828.607277%
B87672753.136763%
C8767718481.943652%
D8768163718.670164%

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 8867 8768 1717 1717 19.36% 19.58%
B 8867 8769 75 75 0.85% 0.86%
C 8867 8768 6167 6167 69.55% 70.34%
D 8868 8770 1185 1185 13.36% 13.51%

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 15 222 10311986 55453.23 903 880 185.9
A 10 83 971857 5221.92 903 880 185.9
A 15 223 655221 3519.05 903 880 185.9
B 5 255 299126 1598.41 961 929 186.6
B 5 235 231351 1235.12 961 929 186.6
B 0 200 178502 951.83 961 929 186.6
C 15 142 16595981 135924.38 518 520 122.1
C 15 158 618948 5065.21 518 520 122.1
C 15 174 518415 4241.8 518 520 122.1
D 13 249 1471040 6208.32 860 839 236.8
D 4 221 1303578 5501.17 860 839 236.8
D 14 210 524258 2210.28 860 839 236.8

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