ASTROSAT CZTI

Data Quality Report

Orbit 35111

Creation date: 2022-03-28T17:17:04.808462
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/AS1T05_015T01_9000005026_35111cztM0_level2.evt modeM0/AS1T05_015T01_9000005026_35111cztM0_level2_quad_clean.evt
Size (bytes)1,735,188,480186,946,560
Size1.6 GB 178.3 MB
Events in quadrant A10,705,1651,149,460
Events in quadrant B10,212,2081,177,649
Events in quadrant C9,529,8071,174,720
Events in quadrant D21,020,5401,047,025

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03300
B03300
C03300
D03300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0425895
B0408434
C0384984
D0738524

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A161305673.515189%
B161308195.077495%
C161302311.432114%
D16130218213.527588%

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 21682 16134 173 173 0.80% 1.07%
B 21682 16134 468 468 2.16% 2.90%
C 21682 16134 160 160 0.74% 0.99%
D 21682 16134 1461 1461 6.74% 9.06%

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 15 169 3257623 8818.06 1855 1818 369.2
A 10 83 189429 508.13 1855 1818 369.2
A 9 143 42892 111.25 1855 1818 369.2
B 5 172 1955824 5628.08 1840 1794 347.2
B 0 190 403398 1156.72 1840 1794 347.2
B 4 232 268629 768.55 1840 1794 347.2
C 0 10 1523162 3614.75 1829 1841 420.9
C 15 214 671227 1590.5 1829 1841 420.9
C 14 67 122098 285.74 1829 1841 420.9
D 8 195 11059857 25671.9 1760 1704 430.7
D 7 80 1149657 2665.01 1760 1704 430.7
D 10 118 416958 964.03 1760 1704 430.7

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