ASTROSAT CZTI

Data Quality Report

Orbit 08876

Creation date: 2024-06-27T15:38:32.161093
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/AS1G07_046T01_9000001236_08876cztM0_level2.evt modeM0/AS1G07_046T01_9000001236_08876cztM0_level2_quad_clean.evt
Size (bytes)553,740,48092,782,080
Size528.1 MB 88.5 MB
Events in quadrant A4,112,119576,868
Events in quadrant B3,839,360576,523
Events in quadrant C4,264,122569,099
Events in quadrant D4,035,303555,148

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171903
B0163262
C0173862
D0169802

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76541371.789914%
B76541622.116540%
C76541261.646198%
D76541642.142670%

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 8944 7655 7 7 0.08% 0.09%
B 8944 7655 12 12 0.13% 0.16%
C 8944 7655 5 5 0.06% 0.07%
D 8944 7655 50 50 0.56% 0.65%

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 5 388126 1975.91 952 931 196.0
A 5 16 43728 218.4 952 931 196.0
A 0 226 8680 39.54 952 931 196.0
B 10 16 44264 233.91 957 933 185.2
B 0 197 25351 131.81 957 933 185.2
B 0 214 24980 129.81 957 933 185.2
C 9 68 603761 2789.16 926 928 216.1
C 1 3 35557 160.22 926 928 216.1
C 14 67 13678 58.99 926 928 216.1
D 8 195 198233 880.03 921 900 224.2
D 7 71 188934 838.56 921 900 224.2
D 2 14 60847 267.34 921 900 224.2

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