ASTROSAT CZTI

Data Quality Report

Orbit 51611

Creation date: 2025-04-15T10:20:54.749670
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_037T05_9000006460_51611cztM0_level2.fits modeM0/AS1A13_037T05_9000006460_51611cztM0_level2_quad_clean.evt
Size (bytes)788,872,32086,474,880
Size752.3 MB 82.5 MB
Events in quadrant A5,433,881616,075
Events in quadrant B4,550,855697,023
Events in quadrant C6,858,676480,733
Events in quadrant D11,846,189362,976

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205511
B0179301
C0249168
D0397921

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A660970210.621879%
B66103485.264750%
C6609184227.871085%
D6609299545.316992%

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 7714 6609 529 529 6.86% 8.00%
B 7715 6610 159 159 2.06% 2.41%
C 7714 6609 1082 1082 14.03% 16.37%
D 7714 6609 2995 2995 38.83% 45.32%

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 8 249 897907 5056.11 727 711 177.4
A 4 175 378708 2130.18 727 711 177.4
A 12 3 293681 1651.02 727 711 177.4
B 10 44 403145 2574.65 731 704 156.3
B 1 207 227057 1448.11 731 704 156.3
B 10 41 168026 1070.46 731 704 156.3
C 15 198 2098242 12212.55 621 616 171.8
C 13 3 2040181 11874.51 621 616 171.8
C 0 209 59833 344.77 621 616 171.8
D 15 174 4070790 24610.95 604 583 165.4
D 8 176 1992158 12042.27 604 583 165.4
D 11 176 1296654 7836.83 604 583 165.4

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