ASTROSAT CZTI

Data Quality Report

Orbit 17389

Creation date: 2024-06-27T17:35:51.910539
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_074T02_9000002572_17389cztM0_level2.evt modeM0/AS1A05_074T02_9000002572_17389cztM0_level2_quad_clean.evt
Size (bytes)511,698,240100,500,480
Size488.0 MB 95.8 MB
Events in quadrant A3,319,437651,622
Events in quadrant B3,687,422655,710
Events in quadrant C3,390,021625,733
Events in quadrant D4,607,108605,195

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148661
B0158301
C0149171
D0186301

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7262270.371798%
B72621171.611126%
C7262831.142936%
D72622703.717984%

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 7477 7263 0 0 0.00% 0.00%
B 7477 7263 11 11 0.15% 0.15%
C 7477 7263 1 1 0.01% 0.01%
D 7477 7263 208 208 2.78% 2.86%

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 7611 38.52 862 842 175.7
A 3 137 6333 31.25 862 842 175.7
A 12 194 6278 30.94 862 842 175.7
B 7 220 108753 649.46 861 839 166.2
B 0 197 69507 413.27 861 839 166.2
B 4 216 37104 218.25 861 839 166.2
C 14 238 124918 648.2 819 822 191.4
C 3 233 33271 169.49 819 822 191.4
C 5 218 24208 122.15 819 822 191.4
D 11 176 454949 2270.26 815 789 200.0
D 1 52 340534 1698.32 815 789 200.0
D 11 66 231157 1151.57 815 789 200.0

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