ASTROSAT CZTI

Data Quality Report

Orbit 21066

Creation date: 2024-06-27T18:23:21.438932
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/AS1A05_155T04_9000003114_21066cztM0_level2.evt modeM0/AS1A05_155T04_9000003114_21066cztM0_level2_quad_clean.evt
Size (bytes)543,404,160101,998,080
Size518.2 MB 97.3 MB
Events in quadrant A3,412,307660,273
Events in quadrant B3,901,641663,117
Events in quadrant C3,432,324638,816
Events in quadrant D5,212,987616,333

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149931
B0161851
C0150042
D0204691

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73351091.486026%
B73351942.644853%
C73341151.568039%
D73343765.126807%

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 7670 7336 0 0 0.00% 0.00%
B 7670 7336 39 39 0.51% 0.53%
C 7669 7335 0 0 0.00% 0.00%
D 7669 7335 251 251 3.27% 3.42%

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 10219 52.45 882 864 178.4
A 0 226 7672 38.17 882 864 178.4
A 3 137 7358 36.41 882 864 178.4
B 7 220 222070 1312.39 874 850 168.6
B 0 197 121605 716.38 874 850 168.6
B 0 182 49018 285.76 874 850 168.6
C 14 238 130853 654.36 845 849 198.7
C 9 54 7242 32.18 845 849 198.7
C 13 61 5877 25.31 845 849 198.7
D 9 1 531546 2546.49 851 826 208.4
D 1 239 506716 2427.35 851 826 208.4
D 7 38 257444 1231.3 851 826 208.4

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