ASTROSAT CZTI

Data Quality Report

Orbit 30951

Creation date: 2024-06-27T20:21:32.673743
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_058T10_9000004472_30951cztM0_level2.evt modeM0/AS1A10_058T10_9000004472_30951cztM0_level2_quad_clean.evt
Size (bytes)592,104,960105,940,800
Size564.7 MB 101.0 MB
Events in quadrant A3,554,047685,035
Events in quadrant B5,686,750684,622
Events in quadrant C3,991,179664,409
Events in quadrant D4,194,424655,107

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152973
B0225542
C0164732
D0169932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74471141.530818%
B74481732.322771%
C74483644.887218%
D74481481.987111%

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 7872 7447 0 0 0.00% 0.00%
B 7873 7448 1 1 0.01% 0.01%
C 7873 7448 2 2 0.03% 0.03%
D 7873 7449 34 34 0.43% 0.46%

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 13366 67.53 920 900 184.6
A 3 137 9266 45.32 920 900 184.6
A 0 226 7736 37.03 920 900 184.6
B 6 159 2045456 11613.87 907 884 176.0
B 0 190 37606 208.59 907 884 176.0
B 12 111 21764 118.61 907 884 176.0
C 14 238 212309 1027.49 875 879 205.8
C 0 10 192600 931.71 875 879 205.8
C 14 254 111376 536.98 875 879 205.8
D 8 195 450377 1955.19 889 871 229.9
D 15 47 186147 805.88 889 871 229.9
D 13 174 100903 435.1 889 871 229.9

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