ASTROSAT CZTI

Data Quality Report

Orbit 22236

Creation date: 2024-06-27T18:38:25.988132
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/AS1T03_147T01_9000003290_22236cztM0_level2.evt modeM0/AS1T03_147T01_9000003290_22236cztM0_level2_quad_clean.evt
Size (bytes)475,041,60086,094,720
Size453.0 MB 82.1 MB
Events in quadrant A3,461,625537,138
Events in quadrant B3,487,405547,482
Events in quadrant C3,465,270519,564
Events in quadrant D3,494,793513,442

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147432
B0147003
C0145982
D0149012

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70271401.992315%
B70261542.191859%
C70261642.334187%
D70261201.707942%

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 7597 7028 0 0 0.00% 0.00%
B 7596 7027 3 3 0.04% 0.04%
C 7596 7027 0 0 0.00% 0.00%
D 7596 7027 7 7 0.09% 0.10%

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 2 79 41513 228.09 882 864 178.2
A 15 192 18516 99.05 882 864 178.2
A 13 254 10250 52.67 882 864 178.2
B 4 173 26856 154.56 875 851 168.3
B 12 111 20371 116.02 875 851 168.3
B 11 111 18039 102.16 875 851 168.3
C 14 238 133129 665.54 852 858 198.7
C 0 10 8949 40.71 852 858 198.7
C 13 61 5835 25.04 852 858 198.7
D 1 52 145268 688.15 868 844 209.9
D 2 136 38176 177.88 868 844 209.9
D 2 234 27791 128.4 868 844 209.9

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