ASTROSAT CZTI

Data Quality Report

Orbit 24279

Creation date: 2024-06-27T19:04:17.294273
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/AS1C05_007T01_9000003588_24279cztM0_level2.evt modeM0/AS1C05_007T01_9000003588_24279cztM0_level2_quad_clean.evt
Size (bytes)685,117,44081,702,720
Size653.4 MB 77.9 MB
Events in quadrant A3,700,734497,787
Events in quadrant B3,731,120504,918
Events in quadrant C6,627,022477,067
Events in quadrant D6,179,327468,826

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157977
B0157572
C0252702
D0235002

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75471281.696038%
B75471682.226050%
C75476648.798198%
D75474616.108387%

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 7801 7547 1 1 0.01% 0.01%
B 7802 7547 0 0 0.00% 0.00%
C 7802 7547 323 323 4.14% 4.28%
D 7802 7547 300 300 3.85% 3.98%

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 13 254 10838 50.91 957 936 194.5
A 6 16 8955 41.23 957 936 194.5
A 3 137 8748 40.17 957 936 194.5
B 12 111 22798 117.97 949 925 185.4
B 11 111 20525 105.72 949 925 185.4
B 14 111 18452 94.53 949 925 185.4
C 7 247 1837438 8705.58 890 897 211.0
C 2 16 1178045 5579.93 890 897 211.0
C 14 238 138209 650.89 890 897 211.0
D 8 195 1608930 7062.22 919 893 227.7
D 1 52 768666 3371.92 919 893 227.7
D 1 239 177129 774.0 919 893 227.7

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