ASTROSAT CZTI

Data Quality Report

Orbit 03824

Creation date: 2024-06-27T14:34:01.823568
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/AS1G05_189T01_9000000492_03824cztM0_level2.evt modeM0/AS1G05_189T01_9000000492_03824cztM0_level2_quad_clean.evt
Size (bytes)537,736,32064,707,840
Size512.8 MB 61.7 MB
Events in quadrant A3,665,514374,394
Events in quadrant B4,940,785363,758
Events in quadrant C3,407,428364,158
Events in quadrant D3,782,625355,065

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158003
B0194722
C0152782
D0163912

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71962313.210117%
B71964616.406337%
C71961622.251251%
D71971602.223149%

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 7751 7196 26 26 0.34% 0.36%
B 7750 7195 229 229 2.95% 3.18%
C 7751 7196 15 15 0.19% 0.21%
D 7752 7197 62 62 0.80% 0.86%

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 0 199 268426 1499.59 867 849 178.4
A 0 226 33075 180.6 867 849 178.4
A 13 251 15893 84.31 867 849 178.4
B 10 16 878470 5139.35 864 843 170.8
B 15 204 627983 3672.51 864 843 170.8
B 10 246 40387 231.57 864 843 170.8
C 9 247 127693 644.0 832 835 197.0
C 1 241 10116 47.12 832 835 197.0
C 10 65 7961 36.18 832 835 197.0
D 14 34 178309 858.73 837 814 206.7
D 10 98 174926 842.37 837 814 206.7
D 11 132 105954 508.68 837 814 206.7

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