ASTROSAT CZTI

Data Quality Report

Orbit 16592

Creation date: 2024-06-27T17:24:49.483983
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/AS1C04_001T01_9000002446_16592cztM0_level2.evt modeM0/AS1C04_001T01_9000002446_16592cztM0_level2_quad_clean.evt
Size (bytes)530,775,360136,419,840
Size506.2 MB 130.1 MB
Events in quadrant A3,605,202914,625
Events in quadrant B3,953,197924,795
Events in quadrant C4,306,796889,958
Events in quadrant D3,698,761879,171

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159911
B0167560
C0179830
D0166690

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75211121.489164%
B75211852.459779%
C75211351.794974%
D75211552.060896%

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 7522 7522 4 4 0.05% 0.05%
B 7522 7522 17 17 0.23% 0.23%
C 7522 7522 11 11 0.15% 0.15%
D 7522 7522 95 95 1.26% 1.26%

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 15 174 216659 1227.96 872 853 175.7
A 9 143 24325 133.56 872 853 175.7
A 15 223 10306 53.79 872 853 175.7
B 15 35 163656 982.86 874 850 165.6
B 0 85 118811 712.13 874 850 165.6
B 0 189 51379 305.04 874 850 165.6
C 3 233 875239 4474.89 838 841 195.4
C 14 238 128540 653.52 838 841 195.4
C 8 128 14081 67.76 838 841 195.4
D 10 70 287728 1396.53 846 818 205.4
D 2 14 128026 619.18 846 818 205.4
D 2 33 34005 161.54 846 818 205.4

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