ASTROSAT CZTI

Data Quality Report

Orbit 04172

Creation date: 2024-06-27T14:38:22.028003
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_240T01_9000000536_04172cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04172cztM0_level2_quad_clean.evt
Size (bytes)483,367,68074,217,600
Size461.0 MB 70.8 MB
Events in quadrant A3,610,271443,150
Events in quadrant B3,675,467443,281
Events in quadrant C3,249,912432,909
Events in quadrant D3,606,504418,954

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156083
B0158062
C0148712
D0160092

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7311610.834359%
B7311620.848037%
C7311250.341950%
D7311891.217344%

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 7711 7312 7 7 0.09% 0.10%
B 7711 7312 6 6 0.08% 0.08%
C 7711 7312 0 0 0.00% 0.00%
D 7711 7312 62 62 0.80% 0.85%

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 3 1 166084 951.73 851 832 173.6
A 15 234 107436 613.96 851 832 173.6
A 0 50 25131 139.94 851 832 173.6
B 15 204 82103 483.87 862 840 167.9
B 8 3 64452 378.77 862 840 167.9
B 0 228 61608 361.84 862 840 167.9
C 8 128 6801 30.96 825 828 192.9
C 13 61 6687 30.37 825 828 192.9
C 10 65 6476 29.28 825 828 192.9
D 2 232 174959 865.53 822 796 201.2
D 13 239 171200 846.85 822 796 201.2
D 13 223 79195 389.62 822 796 201.2

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