ASTROSAT CZTI

Data Quality Report

Orbit 22344

Creation date: 2024-06-27T18:39:42.463977
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/AS1T03_147T01_9000003306_22344cztM0_level2.evt modeM0/AS1T03_147T01_9000003306_22344cztM0_level2_quad_clean.evt
Size (bytes)1,693,889,280337,129,920
Size1.6 GB 321.5 MB
Events in quadrant A11,660,4472,158,132
Events in quadrant B11,986,2342,191,915
Events in quadrant C11,897,1212,084,282
Events in quadrant D14,057,3522,048,383

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05120
B05120
C05120
D05120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0515874
B0520014
C0517354
D0592684

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A251203441.369427%
B251204191.667994%
C251204301.711783%
D251205922.356688%

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 27556 25122 0 0 0.00% 0.00%
B 27556 25121 11 11 0.04% 0.04%
C 27556 25122 9 9 0.03% 0.04%
D 27556 25123 380 380 1.38% 1.51%

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 32575 48.92 3019 2951 605.6
A 3 1 32226 48.34 3019 2951 605.6
A 3 137 27308 40.22 3019 2951 605.6
B 12 111 71918 119.8 3018 2937 575.8
B 11 111 64450 106.83 3018 2937 575.8
B 4 171 60032 99.16 3018 2937 575.8
C 14 238 456161 666.59 2911 2930 679.9
C 10 22 58614 81.9 2911 2930 679.9
C 10 1 21953 27.98 2911 2930 679.9
D 1 52 2012383 2803.71 2941 2855 716.7
D 12 227 620556 861.82 2941 2855 716.7
D 13 174 230464 317.56 2941 2855 716.7

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