ASTROSAT CZTI

Data Quality Report

Orbit 56569

Creation date: 2026-03-13T11:28:22.056096
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_083T06_9000006558_56569cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56569cztM0_level2_quad_clean.evt
Size (bytes)568,693,440120,317,760
Size542.3 MB 114.7 MB
Events in quadrant A6,857,912736,438
Events in quadrant B4,174,268868,832
Events in quadrant C3,986,441757,535
Events in quadrant D5,372,090689,435

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0263251
B0185251
C0184001
D0221001

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A850686610.181049%
B8506941.105102%
C8506550.646602%
D85073213.773363%

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 9096 8507 668 668 7.34% 7.85%
B 9096 8507 16 16 0.18% 0.19%
C 9096 8507 25 25 0.27% 0.29%
D 9097 8508 276 276 3.03% 3.24%

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 4 249 1115329 5060.84 889 866 220.2
A 4 95 678403 3076.73 889 866 220.2
A 15 33 461749 2092.9 889 866 220.2
B 4 21 201639 1016.99 924 889 197.4
B 10 247 70609 353.2 924 889 197.4
B 4 171 42974 213.2 924 889 197.4
C 13 3 125286 512.81 901 890 242.6
C 12 252 87808 358.31 901 890 242.6
C 9 38 67306 273.79 901 890 242.6
D 2 249 706046 2864.62 877 836 246.2
D 6 239 528754 2144.45 877 836 246.2
D 2 31 101708 409.75 877 836 246.2

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