ASTROSAT CZTI

Data Quality Report

Orbit 31652

Creation date: 2024-06-27T20:31:26.535366
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/AS1T04_026T01_9000004624_31652cztM0_level2.evt modeM0/AS1T04_026T01_9000004624_31652cztM0_level2_quad_clean.evt
Size (bytes)884,689,92084,968,640
Size843.7 MB 81.0 MB
Events in quadrant A12,623,647322,389
Events in quadrant B5,314,706614,077
Events in quadrant C3,648,490599,740
Events in quadrant D4,755,481570,189

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420982
B0206722
C0149272
D0190662

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6666525278.787879%
B66661472.205221%
C66662293.435344%
D66661522.280228%

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 7671 6667 3477 3477 45.33% 52.15%
B 7671 6667 30 30 0.39% 0.45%
C 7671 6667 45 45 0.59% 0.67%
D 7671 6667 103 103 1.34% 1.54%

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 0 13 10793903 115058.92 466 458 93.8
A 12 96 15498 160.33 466 458 93.8
A 15 174 11350 116.11 466 458 93.8
B 6 159 1733055 10815.6 831 809 160.2
B 10 245 203227 1263.83 831 809 160.2
B 0 190 99924 618.84 831 809 160.2
C 0 10 317660 1642.88 807 815 192.9
C 14 238 130055 670.13 807 815 192.9
C 4 175 23150 115.81 807 815 192.9
D 8 195 1295927 6676.7 814 794 194.0
D 12 2 298082 1532.59 814 794 194.0
D 2 250 48292 244.86 814 794 194.0

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