ASTROSAT CZTI

Data Quality Report

Orbit 20240227_A13_031T01_9000006102_level2

Creation date: 2024-03-02T10:24:35.875804
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/AS1A13_031T01_9000006102cztM0_level2.fits modeM0/AS1A13_031T01_9000006102cztM0_level2_quad_clean.evt
Size (bytes)388,895,040432,601,920
Size370.9 MB 412.6 MB
Events in quadrant A2,289,0402,612,606
Events in quadrant B2,229,9882,659,037
Events in quadrant C2,345,0242,612,259
Events in quadrant D1,881,2382,188,086

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01395590
B01035740
C0916450
D01369350

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08920
B08920
C08920
D08920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4414711122.518857%
B4414815703.556220%
C441472560.579881%
D44147485510.997350%

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 52352 44149 0 0 0.00% 0.00%
B 52352 44139 0 0 0.00% 0.00%
C 52352 44148 0 0 0.00% 0.00%
D 52352 43545 0 0 0.00% 0.00%

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 15 236 1880 8.6 596 556 154.0
A 7 110 1852 8.41 596 556 154.0
A 0 29 1792 8.02 596 556 154.0
B 2 9 2097 13.03 588 558 118.1
B 2 8 1697 9.64 588 558 118.1
B 3 17 1589 8.73 588 558 118.1
C 3 202 1820 7.78 619 577 159.7
C 3 203 1786 7.57 619 577 159.7
C 1 81 1714 7.12 619 577 159.7
D 8 176 1659 7.77 539 489 150.6
D 12 6 1389 5.98 539 489 150.6
D 6 38 1337 5.63 539 489 150.6

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