ASTROSAT CZTI

Data Quality Report

Orbit 18430

Creation date: 2024-06-27T17:49:44.593616
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_199T01_9000002732_18430cztM0_level2.evt modeM0/AS1A05_199T01_9000002732_18430cztM0_level2_quad_clean.evt
Size (bytes)486,475,20089,277,120
Size463.9 MB 85.1 MB
Events in quadrant A3,298,774553,075
Events in quadrant B3,483,802568,299
Events in quadrant C3,361,737546,738
Events in quadrant D4,099,178533,811

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147521
B0151671
C0147551
D0171522

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71991832.542020%
B71992363.278233%
C71991972.736491%
D71982112.931370%

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 7389 7200 0 0 0.00% 0.00%
B 7389 7200 43 43 0.58% 0.60%
C 7389 7200 0 0 0.00% 0.00%
D 7388 7199 43 43 0.58% 0.60%

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 0 226 7402 37.98 855 835 172.9
A 3 137 6908 35.12 855 835 172.9
A 12 194 6227 31.19 855 835 172.9
B 10 245 137008 828.62 853 831 164.3
B 12 111 19916 116.13 853 831 164.3
B 11 111 17432 101.02 853 831 164.3
C 14 238 125710 649.73 819 820 192.2
C 3 233 31851 161.44 819 820 192.2
C 13 61 5894 26.4 819 820 192.2
D 10 66 476942 2344.57 830 806 203.1
D 1 52 347113 1705.27 830 806 203.1
D 2 234 33958 163.25 830 806 203.1

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