ASTROSAT CZTI

Data Quality Report

Orbit 52922

Creation date: 2025-07-17T01:13:24.844105
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/AS1C09_011T06_9000006484_52922cztM0_level2.fits modeM0/AS1C09_011T06_9000006484_52922cztM0_level2_quad_clean.evt
Size (bytes)928,010,88072,348,480
Size885.0 MB 69.0 MB
Events in quadrant A16,494,82443,868
Events in quadrant B3,447,231667,404
Events in quadrant C4,911,789569,809
Events in quadrant D8,982,445444,989

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0536721
B0149911
C0194551
D0313717

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6655631694.906086%
B66561311.968149%
C66564887.331731%
D6655178026.746807%

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 6869 6654 5716 5716 83.21% 85.90%
B 6871 6657 40 40 0.58% 0.60%
C 6871 6657 347 347 5.05% 5.21%
D 6870 6656 1519 1519 22.11% 22.82%

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 9 191 15222074 224409.12 266 259 67.8
A 0 8 70190 1030.96 266 259 67.8
A 15 174 28168 411.45 266 259 67.8
B 10 247 144272 982.55 693 669 146.2
B 5 172 138689 944.35 693 669 146.2
B 4 81 85032 577.22 693 669 146.2
C 15 224 658488 3577.5 671 662 183.9
C 13 3 545806 2964.69 671 662 183.9
C 7 80 391093 2123.31 671 662 183.9
D 12 0 1979608 11313.38 611 583 174.9
D 8 176 1527252 8727.42 611 583 174.9
D 15 78 1503078 8589.22 611 583 174.9

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