ASTROSAT CZTI

Data Quality Report

Orbit 53443

Creation date: 2025-08-15T12:08:32.562074
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_002T06_9000006496_53443cztM0_level2.fits modeM0/AS1A14_002T06_9000006496_53443cztM0_level2_quad_clean.evt
Size (bytes)697,279,68090,423,360
Size665.0 MB 86.2 MB
Events in quadrant A6,601,745581,596
Events in quadrant B4,012,180698,576
Events in quadrant C10,193,165449,913
Events in quadrant D4,500,266553,709

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239691
B0163271
C0348461
D0179641

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A650888113.537185%
B65081892.904118%
C6508211932.559926%
D65093325.100630%

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 7538 6509 771 771 10.23% 11.85%
B 7538 6509 35 35 0.46% 0.54%
C 7538 6509 1769 1769 23.47% 27.18%
D 7539 6510 253 253 3.36% 3.89%

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 15 174 3146790 18594.02 685 669 169.2
A 3 63 530539 3131.6 685 669 169.2
A 1 241 73072 427.91 685 669 169.2
B 4 171 575554 3791.08 713 688 151.6
B 10 254 226700 1490.49 713 688 151.6
B 0 213 71628 467.83 713 688 151.6
C 9 38 3041734 18049.31 619 616 168.5
C 15 224 2259415 13406.18 619 616 168.5
C 15 178 1062841 6304.4 619 616 168.5
D 15 171 406249 2086.21 686 656 194.4
D 2 120 313043 1606.79 686 656 194.4
D 15 254 247735 1270.88 686 656 194.4

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