ASTROSAT CZTI

Data Quality Report

Orbit 46827

Creation date: 2024-06-27T23:28:10.963873
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/AS1C07_001T10_9000006272_46827cztM0_level2.fits modeM0/AS1C07_001T10_9000006272_46827cztM0_level2_quad_clean.evt
Size (bytes)679,440,960132,658,560
Size648.0 MB 126.5 MB
Events in quadrant A7,814,169869,198
Events in quadrant B5,721,691892,303
Events in quadrant C3,879,910899,359
Events in quadrant D7,088,138775,117

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0287842
B0228672
C0178172
D0269632

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83592743.277904%
B83593894.653667%
C8359680.813494%
D83596507.776050%

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 8504 8361 24 24 0.28% 0.29%
B 8504 8361 176 176 2.07% 2.11%
C 8504 8361 35 35 0.41% 0.42%
D 8504 8361 469 469 5.52% 5.61%

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 10 83 4030523 21244.55 914 893 189.7
A 15 235 73106 380.71 914 893 189.7
A 7 3 70558 367.28 914 893 189.7
B 3 112 1836278 10196.64 916 886 180.0
B 0 198 85172 468.26 916 886 180.0
B 4 171 61478 336.62 916 886 180.0
C 14 254 136493 626.79 923 924 216.3
C 12 250 82696 378.07 923 924 216.3
C 0 207 40478 182.87 923 924 216.3
D 1 52 2531375 11416.31 887 858 221.7
D 13 112 336016 1512.05 887 858 221.7
D 13 249 313798 1411.81 887 858 221.7

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