ASTROSAT CZTI

Data Quality Report

Orbit 18879

Creation date: 2024-06-27T17:56:02.532555
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/AS1A06_003T07_9000002818_18879cztM0_level2.evt modeM0/AS1A06_003T07_9000002818_18879cztM0_level2_quad_clean.evt
Size (bytes)683,190,720106,896,960
Size651.5 MB 101.9 MB
Events in quadrant A6,379,237666,042
Events in quadrant B4,276,754711,734
Events in quadrant C4,058,550672,045
Events in quadrant D5,457,580654,464

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239432
B0177952
C0170892
D0213203

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A765390511.825428%
B76542373.096420%
C76544205.487327%
D76533945.148308%

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 7743 7655 625 625 8.07% 8.16%
B 7744 7656 30 30 0.39% 0.39%
C 7744 7656 108 108 1.39% 1.41%
D 7743 7655 209 209 2.70% 2.73%

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 6 16 2834818 15450.04 906 885 183.4
A 0 13 25513 134.27 906 885 183.4
A 13 254 11690 58.91 906 885 183.4
B 7 220 343231 1916.13 929 903 178.7
B 0 189 198484 1105.93 929 903 178.7
B 4 171 37486 204.77 929 903 178.7
C 12 4 436682 2094.31 888 893 208.1
C 14 238 136719 652.75 888 893 208.1
C 3 233 13849 62.26 888 893 208.1
D 1 52 843955 3845.45 901 871 219.2
D 12 218 744694 3392.7 901 871 219.2
D 7 238 210502 956.16 901 871 219.2

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