ASTROSAT CZTI

Data Quality Report

Orbit 20290

Creation date: 2024-06-27T18:13:28.705948
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_174T01_9000003008_20290cztM0_level2.evt modeM0/AS1A05_174T01_9000003008_20290cztM0_level2_quad_clean.evt
Size (bytes)555,580,800102,983,040
Size529.8 MB 98.2 MB
Events in quadrant A3,531,502661,743
Events in quadrant B3,854,868680,906
Events in quadrant C3,535,596655,065
Events in quadrant D5,425,009629,252

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148752
B0160722
C0148362
D0207822

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7059530.750815%
B70591371.940785%
C7059961.359966%
D70593875.482363%

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 9154 7061 3 3 0.03% 0.04%
B 9154 7061 26 26 0.28% 0.37%
C 9154 7061 0 0 0.00% 0.00%
D 9154 7061 253 253 2.76% 3.58%

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 8 205 70505 387.03 888 869 179.9
A 14 238 25178 135.11 888 869 179.9
A 9 143 12293 63.49 888 869 179.9
B 7 220 219341 1293.67 888 865 168.9
B 0 197 41289 239.36 888 865 168.9
B 4 142 36169 209.05 888 865 168.9
C 14 238 135060 659.57 866 872 203.4
C 0 207 11493 52.21 866 872 203.4
C 3 233 10801 48.8 866 872 203.4
D 1 52 2064403 9879.78 859 833 208.9
D 2 234 36989 173.1 859 833 208.9
D 5 222 31477 146.71 859 833 208.9

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