ASTROSAT CZTI

Data Quality Report

Orbit 24842

Creation date: 2024-06-27T19:10:30.982484
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/AS1A08_003T03_9000003632_24842cztM0_level2.evt modeM0/AS1A08_003T03_9000003632_24842cztM0_level2_quad_clean.evt
Size (bytes)523,866,24090,642,240
Size499.6 MB 86.4 MB
Events in quadrant A3,709,057573,687
Events in quadrant B3,657,794580,007
Events in quadrant C3,589,877545,096
Events in quadrant D4,407,930533,135

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154152
B0152762
C0151342
D0176932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73761161.572668%
B73761331.803145%
C73761482.006508%
D73761802.440347%

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 7856 7378 6 6 0.08% 0.08%
B 7856 7378 1 1 0.01% 0.01%
C 7856 7378 0 0 0.00% 0.00%
D 7856 7378 100 100 1.27% 1.36%

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 6 16 119437 634.55 931 913 186.8
A 13 254 9905 48.14 931 913 186.8
A 3 137 8751 41.96 931 913 186.8
B 12 111 22564 122.03 922 898 177.6
B 11 111 20430 110.01 922 898 177.6
B 14 111 18830 101.0 922 898 177.6
C 14 238 140493 676.08 883 890 206.5
C 13 61 6155 25.5 883 890 206.5
C 7 247 5120 20.49 883 890 206.5
D 1 52 469520 2148.72 891 864 218.1
D 8 195 308051 1408.41 891 864 218.1
D 5 222 220608 1007.5 891 864 218.1

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