ASTROSAT CZTI

Data Quality Report

Orbit 20190402_A05_132T01_9000002828_level2

Creation date: 2025-11-29T01:19:18.019615
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_132T01_9000002828cztM0_level2.fits modeM0/AS1A05_132T01_9000002828cztM0_level2_quad_clean.evt
Size (bytes)462,136,320329,238,720
Size440.7 MB 314.0 MB
Events in quadrant A2,891,3721,809,579
Events in quadrant B2,775,9781,834,662
Events in quadrant C2,858,2321,758,663
Events in quadrant D2,207,9921,307,492

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0989490
B01054460
C01048660
D01965750

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09680
B09680
C09680
D09680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A474753730.785677%
B474768021.689275%
C474767391.556576%
D47475916319.300685%

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 53916 46011 0 0 0.00% 0.00%
B 53916 46009 0 0 0.00% 0.00%
C 53916 46010 0 0 0.00% 0.00%
D 53915 45900 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 0 29 2382 9.1 752 706 184.1
A 7 110 2260 8.44 752 706 184.1
A 9 19 2148 7.83 752 706 184.1
B 2 9 2204 10.4 734 700 144.7
B 3 17 1883 8.18 734 700 144.7
B 2 8 1877 8.14 734 700 144.7
C 12 250 2011 6.68 755 708 194.9
C 3 158 1973 6.49 755 708 194.9
C 12 241 1965 6.45 755 708 194.9
D 10 190 1693 6.65 631 575 168.2
D 10 189 1573 5.93 631 575 168.2
D 6 231 1565 5.89 631 575 168.2

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