ASTROSAT CZTI

Data Quality Report

Orbit 17847

Creation date: 2024-06-27T17:41:37.620735
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/AS1A05_085T01_9000002658_17847cztM0_level2.evt modeM0/AS1A05_085T01_9000002658_17847cztM0_level2_quad_clean.evt
Size (bytes)604,647,36095,898,240
Size576.6 MB 91.5 MB
Events in quadrant A3,124,649649,682
Events in quadrant B3,280,478670,920
Events in quadrant C3,227,788632,733
Events in quadrant D8,247,434506,071

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133892
B0137312
C0133872
D0286832

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6371190.298226%
B6371330.517972%
C6370370.580848%
D6370181528.492936%

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 7806 6372 0 0 0.00% 0.00%
B 7806 6372 2 2 0.03% 0.03%
C 7805 6371 0 0 0.00% 0.00%
D 7805 6371 1667 1667 21.36% 26.17%

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 16373 96.62 806 793 161.3
A 5 98 7533 41.8 806 793 161.3
A 0 226 7283 40.25 806 793 161.3
B 0 183 47292 307.33 818 800 151.3
B 0 197 18101 114.37 818 800 151.3
B 12 111 17595 111.02 818 800 151.3
C 14 238 123114 677.01 779 786 180.7
C 5 218 45722 248.69 779 786 180.7
C 5 219 9865 50.25 779 786 180.7
D 7 238 5634790 35116.54 665 649 160.4
D 1 52 58867 362.86 665 649 160.4
D 2 234 23044 139.58 665 649 160.4

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