ASTROSAT CZTI

Data Quality Report

Orbit 33729

Creation date: 2024-06-27T20:51:53.639247
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/AS1A11_086T01_9000004816_33729cztM0_level2.evt modeM0/AS1A11_086T01_9000004816_33729cztM0_level2_quad_clean.evt
Size (bytes)449,239,68096,503,040
Size428.4 MB 92.0 MB
Events in quadrant A2,479,535651,011
Events in quadrant B3,623,589646,364
Events in quadrant C2,892,531662,361
Events in quadrant D4,268,128609,936

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105203
B0141502
C0115292
D0161122

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A503570.139027%
B50352795.541212%
C5035791.569017%
D50352605.163853%

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 9251 5037 4 4 0.04% 0.08%
B 9251 5037 222 222 2.40% 4.41%
C 9251 5037 60 60 0.65% 1.19%
D 9251 5037 239 239 2.58% 4.74%

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 52828 427.51 616 606 122.2
A 14 4 34335 276.12 616 606 122.2
A 10 83 9093 69.48 616 606 122.2
B 5 172 875711 7647.02 609 596 114.4
B 5 255 82199 713.07 609 596 114.4
B 0 245 72030 624.21 609 596 114.4
C 0 10 241558 1734.77 608 615 138.9
C 15 214 234498 1683.93 608 615 138.9
C 14 67 19488 135.88 608 615 138.9
D 8 195 874426 5462.99 586 577 160.0
D 13 249 209234 1304.45 586 577 160.0
D 2 250 204018 1271.84 586 577 160.0

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