ASTROSAT CZTI

Data Quality Report

Orbit 19540

Creation date: 2024-06-27T18:04:08.977565
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_142T01_9000002904_19540cztM0_level2.evt modeM0/AS1A05_142T01_9000002904_19540cztM0_level2_quad_clean.evt
Size (bytes)1,230,966,720224,320,320
Size1.1 GB 213.9 MB
Events in quadrant A8,591,1431,441,493
Events in quadrant B9,060,9541,455,731
Events in quadrant C9,388,2941,372,768
Events in quadrant D9,100,6801,361,885

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03460
B03460
C03460
D03460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0353964
B0368524
C0380594
D0377894

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0470
B0470
C0470
D0470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A168521630.967244%
B168523061.815808%
C168522701.602184%
D168522321.376691%

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 21617 16853 4 4 0.02% 0.02%
B 21617 16854 62 62 0.29% 0.37%
C 21617 16854 17 17 0.08% 0.10%
D 21617 16855 99 99 0.46% 0.59%

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 5 16 46595 100.24 2220 2182 443.1
A 13 254 20690 41.77 2220 2182 443.1
A 0 226 19128 38.25 2220 2182 443.1
B 7 220 275131 672.91 2186 2140 405.7
B 0 244 128023 310.29 2186 2140 405.7
B 12 111 48505 114.29 2186 2140 405.7
C 3 233 711840 1477.13 2083 2104 480.5
C 14 238 330011 682.45 2083 2104 480.5
C 5 112 185693 382.09 2083 2104 480.5
D 1 52 751016 1454.24 2138 2082 515.0
D 12 218 90191 171.08 2138 2082 515.0
D 12 225 68284 128.55 2138 2082 515.0

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