ASTROSAT CZTI

Data Quality Report

Orbit 20210826_A10_053T11_9000004668_level2

Creation date: 2021-08-27T16:31:37.397836
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_053T11_9000004668cztM0_level2_bc.evt modeM0/AS1A10_053T11_9000004668cztM0_level2_quad_clean.evt
Size (bytes)1,871,976,960479,831,040
Size1.7 GB 457.6 MB
Events in quadrant A7,540,0123,099,641
Events in quadrant B17,784,8033,070,094
Events in quadrant C12,322,3672,978,936
Events in quadrant D16,524,7752,840,039

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0764940
B01136250
C0947800
D01092920

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07580
B07580
C07580
D07580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A370274101.107300%
B3702910392.805909%
C3702816724.515502%
D3702826577.175651%

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 41163 37023 5 5 0.01% 0.01%
B 41164 37023 6 6 0.01% 0.02%
C 41164 37025 86 86 0.21% 0.23%
D 41164 37023 333 333 0.81% 0.90%

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 62364 143.64 1933 1899 421.0
A 12 96 46896 106.89 1933 1899 421.0
A 13 6 15401 32.07 1933 1899 421.0
B 6 159 9399497 25233.79 1928 1878 372.4
B 10 245 592579 1586.11 1928 1878 372.4
B 0 190 106740 281.57 1928 1878 372.4
C 0 10 3464532 7847.61 1847 1838 441.2
C 3 233 1620902 3669.33 1847 1838 441.2
C 2 114 68468 151.01 1847 1838 441.2
D 7 238 5327951 12482.13 1858 1797 426.7
D 8 195 2299383 5384.51 1858 1797 426.7
D 12 218 606081 1416.17 1858 1797 426.7

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