ASTROSAT CZTI

Data Quality Report

Orbit 20472

Creation date: 2024-06-27T18:15:47.570022
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/AS1A05_208T03_9000003026_20472cztM0_level2.evt modeM0/AS1A05_208T03_9000003026_20472cztM0_level2_quad_clean.evt
Size (bytes)580,343,04086,990,400
Size553.5 MB 83.0 MB
Events in quadrant A3,934,466540,384
Events in quadrant B3,950,069549,569
Events in quadrant C3,555,772529,780
Events in quadrant D5,622,743488,889

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168191
B0165061
C0154771
D0218561

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75553594.751820%
B75562473.268925%
C75562112.792483%
D75556738.908008%

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 7635 7555 140 140 1.83% 1.85%
B 7636 7556 11 11 0.14% 0.15%
C 7636 7556 0 0 0.00% 0.00%
D 7635 7555 509 509 6.67% 6.74%

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 9 143 482809 2665.61 893 873 180.8
A 13 254 9550 47.99 893 873 180.8
A 0 226 7911 38.93 893 873 180.8
B 0 189 169479 965.04 904 882 174.7
B 7 220 61132 344.87 904 882 174.7
B 0 197 54211 305.25 904 882 174.7
C 14 238 136752 670.12 869 872 202.8
C 8 128 11003 49.96 869 872 202.8
C 9 221 6860 29.53 869 872 202.8
D 1 52 823963 3895.7 860 833 211.3
D 7 38 505125 2386.71 860 833 211.3
D 15 0 449266 2122.34 860 833 211.3

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