ASTROSAT CZTI

Data Quality Report

Orbit 18445

Creation date: 2024-06-27T17:49:55.749706
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/AS1A05_199T01_9000002732_18445cztM0_level2.evt modeM0/AS1A05_199T01_9000002732_18445cztM0_level2_quad_clean.evt
Size (bytes)535,717,44088,801,920
Size510.9 MB 84.7 MB
Events in quadrant A3,328,697552,659
Events in quadrant B5,192,887546,694
Events in quadrant C3,369,196547,676
Events in quadrant D3,839,294534,980

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148861
B0202851
C0148711
D0161351

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72761602.199010%
B72774406.046448%
C72761702.336449%
D72761742.391424%

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 7456 7276 0 0 0.00% 0.00%
B 7457 7277 180 180 2.41% 2.47%
C 7456 7276 0 0 0.00% 0.00%
D 7455 7275 47 47 0.63% 0.65%

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 0 226 7379 37.01 864 844 176.6
A 3 137 7014 34.94 864 844 176.6
A 12 194 6156 30.08 864 844 176.6
B 10 245 1835792 11150.6 850 827 164.6
B 0 244 24410 143.3 850 827 164.6
B 12 111 20239 117.96 850 827 164.6
C 14 238 126310 640.95 829 833 195.8
C 13 61 5856 25.66 829 833 195.8
C 8 128 5010 21.34 829 833 195.8
D 12 110 350435 1716.91 838 812 203.6
D 14 34 142522 695.9 838 812 203.6
D 13 168 68721 333.48 838 812 203.6

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