ASTROSAT CZTI

Data Quality Report

Orbit 54605

Creation date: 2025-11-01T07:21:31.382748
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/AS1A14_066T07_9000006522_54605cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54605cztM0_level2_quad_clean.evt
Size (bytes)571,677,12094,694,400
Size545.2 MB 90.3 MB
Events in quadrant A9,304,279540,423
Events in quadrant B3,659,674677,297
Events in quadrant C3,716,205610,734
Events in quadrant D3,967,254576,130

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0322697
B0157032
C0156742
D0163892

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6629161924.422990%
B66292653.997586%
C66291442.172273%
D6629991.493438%

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 7644 6631 1394 1394 18.24% 21.02%
B 7644 6631 130 130 1.70% 1.96%
C 7644 6631 100 100 1.31% 1.51%
D 7644 6631 62 62 0.81% 0.94%

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 3 14 5789169 34779.74 665 648 166.4
A 11 3 318582 1910.27 665 648 166.4
A 13 248 224276 1343.64 665 648 166.4
B 1 207 331439 2175.64 710 687 152.0
B 5 185 132463 866.8 710 687 152.0
B 5 172 127387 833.41 710 687 152.0
C 6 223 307073 1586.89 706 701 193.1
C 13 3 288019 1488.2 706 701 193.1
C 12 249 106107 545.96 706 701 193.1
D 9 19 468011 2344.16 700 668 199.4
D 8 160 154904 773.64 700 668 199.4
D 5 113 138138 689.54 700 668 199.4

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