ASTROSAT CZTI

Data Quality Report

Orbit 16240

Creation date: 2024-06-27T17:19:48.185905
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/AS1T02_112T01_9000002390_16240cztM0_level2.evt modeM0/AS1T02_112T01_9000002390_16240cztM0_level2_quad_clean.evt
Size (bytes)510,379,200100,915,200
Size486.7 MB 96.2 MB
Events in quadrant A3,787,092658,273
Events in quadrant B3,798,900667,294
Events in quadrant C3,725,468654,609
Events in quadrant D3,723,699641,981

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152093
B0153172
C0153172
D0148922

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62281822.922286%
B62281532.456647%
C62281672.681439%
D62281081.734104%

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 7544 6230 69 69 0.91% 1.11%
B 7544 6230 21 21 0.28% 0.34%
C 7544 6230 0 0 0.00% 0.00%
D 7544 6230 16 16 0.21% 0.26%

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 15 174 296987 1672.73 884 871 177.0
A 8 247 59299 330.05 884 871 177.0
A 9 143 24786 135.09 884 871 177.0
B 7 220 117342 711.86 872 855 163.6
B 0 198 57069 343.53 872 855 163.6
B 0 189 53486 321.63 872 855 163.6
C 3 233 303840 1568.57 842 851 193.2
C 14 238 132410 681.08 842 851 193.2
C 13 61 5944 26.37 842 851 193.2
D 1 52 332059 1590.03 865 842 208.3
D 5 222 44122 207.77 865 842 208.3
D 12 233 33597 157.24 865 842 208.3

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