ASTROSAT CZTI

Data Quality Report

Orbit 21097

Creation date: 2024-06-27T18:23:30.604524
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_163T01_9000003118_21097cztM0_level2.evt modeM0/AS1A05_163T01_9000003118_21097cztM0_level2_quad_clean.evt
Size (bytes)576,486,72098,504,640
Size549.8 MB 93.9 MB
Events in quadrant A3,770,225625,109
Events in quadrant B4,089,238627,733
Events in quadrant C3,735,890602,057
Events in quadrant D5,328,930580,237

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161562
B0170582
C0161173
D0208832

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78821932.448617%
B78822423.070287%
C78812182.766146%
D78812703.425961%

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 8752 7884 2 2 0.02% 0.03%
B 8752 7884 26 26 0.30% 0.33%
C 8751 7883 0 0 0.00% 0.00%
D 8751 7882 119 119 1.36% 1.51%

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 15 192 50711 256.11 959 939 194.3
A 10 229 22914 113.08 959 939 194.3
A 13 254 9964 46.44 959 939 194.3
B 7 220 257096 1393.54 952 927 183.8
B 0 230 41526 220.85 952 927 183.8
B 12 111 22536 117.55 952 927 183.8
C 14 238 143631 653.64 920 923 218.3
C 13 61 6335 24.79 920 923 218.3
C 7 221 4504 16.4 920 923 218.3
D 1 239 1115748 4897.07 931 903 227.7
D 13 174 220456 964.41 931 903 227.7
D 1 20 184892 808.19 931 903 227.7

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