ASTROSAT CZTI

Data Quality Report

Orbit 26420

Creation date: 2024-06-27T19:28:48.489744
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/AS1A09_127T03_9000003820_26420cztM0_level2.evt modeM0/AS1A09_127T03_9000003820_26420cztM0_level2_quad_clean.evt
Size (bytes)586,955,52085,780,800
Size559.8 MB 81.8 MB
Events in quadrant A3,482,101535,930
Events in quadrant B3,720,044540,045
Events in quadrant C3,894,520514,413
Events in quadrant D6,179,040493,300

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152080
B0157700
C0162170
D0233000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73761221.654013%
B73771772.399349%
C73772433.294022%
D73775978.092721%

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 8736 7378 0 0 0.00% 0.00%
B 8737 7379 13 13 0.15% 0.18%
C 8737 7379 24 24 0.27% 0.33%
D 8737 7379 443 443 5.07% 6.00%

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 12157 62.51 900 880 180.4
A 12 189 9061 45.35 900 880 180.4
A 3 137 8207 40.61 900 880 180.4
B 0 244 59614 341.13 902 880 172.2
B 5 172 56788 324.72 902 880 172.2
B 0 190 23097 129.04 902 880 172.2
C 3 233 292118 1426.37 871 874 204.2
C 14 238 138365 673.36 871 874 204.2
C 2 16 30107 143.17 871 874 204.2
D 1 52 1823604 8975.71 855 835 203.1
D 15 0 353547 1736.83 855 835 203.1
D 7 80 280378 1376.53 855 835 203.1

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