ASTROSAT CZTI

Data Quality Report

Orbit 21080

Creation date: 2024-06-27T18:23:15.400984
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_075T05_9000003116_21080cztM0_level2.evt modeM0/AS1A05_075T05_9000003116_21080cztM0_level2_quad_clean.evt
Size (bytes)570,594,240100,137,600
Size544.2 MB 95.5 MB
Events in quadrant A3,557,127642,314
Events in quadrant B3,929,927647,294
Events in quadrant C3,541,466619,346
Events in quadrant D5,737,165595,601

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156052
B0165482
C0155622
D0222222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75901161.528327%
B75901391.831357%
C75901281.686430%
D75912433.201159%

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 8200 7592 3 3 0.04% 0.04%
B 8200 7592 14 14 0.17% 0.18%
C 8200 7592 0 0 0.00% 0.00%
D 8201 7593 130 130 1.59% 1.71%

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 12 96 20804 107.49 914 893 185.2
A 13 254 10945 54.27 914 893 185.2
A 15 192 8643 41.84 914 893 185.2
B 0 219 111538 639.62 907 885 173.0
B 0 230 81515 466.08 907 885 173.0
B 10 247 62892 358.43 907 885 173.0
C 14 238 134926 655.47 871 874 204.5
C 13 61 6019 25.16 871 874 204.5
C 8 128 5570 22.96 871 874 204.5
D 1 239 1506739 7000.61 883 860 215.1
D 9 1 207939 962.68 883 860 215.1
D 1 52 162024 749.23 883 860 215.1

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