ASTROSAT CZTI

Data Quality Report

Orbit 04419

Creation date: 2024-06-27T14:41:43.864939
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/AS1G05_230T04_9000000550_04419cztM0_level2.evt modeM0/AS1G05_230T04_9000000550_04419cztM0_level2_quad_clean.evt
Size (bytes)622,886,400107,153,280
Size594.0 MB 102.2 MB
Events in quadrant A3,453,673694,719
Events in quadrant B4,687,697675,924
Events in quadrant C3,437,836694,592
Events in quadrant D6,763,635644,530

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158943
B0193022
C0160432
D0255862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7689680.884380%
B76893614.695019%
C7689590.767330%
D768989011.574977%

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 7814 7691 6 6 0.08% 0.08%
B 7814 7691 178 178 2.28% 2.31%
C 7814 7691 19 19 0.24% 0.25%
D 7814 7691 1150 1150 14.72% 14.95%

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 50 23984 127.92 878 860 180.8
A 13 251 21607 114.77 878 860 180.8
A 0 226 9030 45.2 878 860 180.8
B 14 167 1065718 6404.67 873 852 166.3
B 10 16 79156 470.96 873 852 166.3
B 8 3 47460 280.33 873 852 166.3
C 9 16 120663 612.12 846 846 195.7
C 12 4 9229 42.83 846 846 195.7
C 13 61 7136 32.13 846 846 195.7
D 13 114 3235052 16002.37 830 804 202.1
D 12 227 135600 666.94 830 804 202.1
D 8 112 50095 243.88 830 804 202.1

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