ASTROSAT CZTI

Data Quality Report

Orbit 27995

Creation date: 2024-06-27T19:46:51.691281
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/AS1A10_065T03_9000004040_27995cztM0_level2.evt modeM0/AS1A10_065T03_9000004040_27995cztM0_level2_quad_clean.evt
Size (bytes)587,047,68098,691,840
Size559.9 MB 94.1 MB
Events in quadrant A3,840,331657,280
Events in quadrant B3,966,748653,169
Events in quadrant C4,263,943611,124
Events in quadrant D5,261,467607,132

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156750
B0160640
C0172590
D0207630

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65941852.805581%
B65942553.867152%
C65943495.292690%
D65942223.366697%

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 9234 6594 0 0 0.00% 0.00%
B 9234 6594 7 7 0.08% 0.11%
C 9234 6594 21 21 0.23% 0.32%
D 9234 6594 62 62 0.67% 0.94%

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 9423 42.99 994 976 196.5
A 8 192 9381 42.78 994 976 196.5
A 3 137 8827 39.96 994 976 196.5
B 10 245 120895 648.93 978 955 184.8
B 12 111 22148 114.66 978 955 184.8
B 11 111 20252 104.4 978 955 184.8
C 3 233 307674 1426.05 935 945 215.1
C 14 238 152373 704.02 935 945 215.1
C 10 22 103304 475.89 935 945 215.1
D 1 52 648838 2923.83 948 927 221.6
D 7 80 516137 2324.99 948 927 221.6
D 8 195 464976 2094.11 948 927 221.6

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