ASTROSAT CZTI

Data Quality Report

Orbit 12318

Creation date: 2024-06-27T16:25:23.535741
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/AS1A04_183T02_9000001816_12318cztM0_level2.evt modeM0/AS1A04_183T02_9000001816_12318cztM0_level2_quad_clean.evt
Size (bytes)278,127,36039,484,800
Size265.2 MB 37.7 MB
Events in quadrant A2,182,058231,719
Events in quadrant B2,242,657239,538
Events in quadrant C1,822,750235,332
Events in quadrant D1,920,838224,749

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A088361
B089061
C077591
D080931

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3732521.393355%
B37321293.456592%
C3732200.535906%
D3732310.830654%

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 3733 3733 4 4 0.11% 0.11%
B 3733 3733 54 54 1.45% 1.45%
C 3733 3733 0 0 0.00% 0.00%
D 3733 3733 7 7 0.19% 0.19%

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 1 162 103912 1052.65 480 471 98.3
A 1 178 58616 591.7 480 471 98.3
A 1 161 50896 513.14 480 471 98.3
B 4 239 320886 3559.05 480 470 90.0
B 0 187 17184 185.65 480 470 90.0
B 12 111 9873 104.44 480 470 90.0
C 4 254 7267 63.03 464 469 107.9
C 1 16 6831 58.99 464 469 107.9
C 13 61 3370 26.9 464 469 107.9
D 1 52 84924 761.57 459 448 110.9
D 13 104 55227 493.84 459 448 110.9
D 8 195 14848 129.82 459 448 110.9

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