ASTROSAT CZTI

Data Quality Report

Orbit 53566

Creation date: 2025-08-23T10:40:36.500579
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_004T05_9000006502_53566cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53566cztM0_level2_quad_clean.evt
Size (bytes)2,870,426,880185,904,000
Size2.7 GB 177.3 MB
Events in quadrant A29,272,088980,790
Events in quadrant B11,997,0341,771,936
Events in quadrant C24,769,8181,168,923
Events in quadrant D38,794,234431,481

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0997113
B0487663
C0862923
D01279113

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18481821644.456469%
B1848110145.486716%
C18481537129.062280%
D184811358173.486283%

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 19861 18484 6822 6822 34.35% 36.91%
B 19861 18483 622 622 3.13% 3.37%
C 19861 18483 4959 4959 24.97% 26.83%
D 19861 18482 10745 10745 54.10% 58.14%

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 62 9841904 25124.2 1579 1539 391.7
A 3 63 8338192 21284.96 1579 1539 391.7
A 4 239 2426197 6190.58 1579 1539 391.7
B 2 249 1042830 2539.47 1928 1855 409.9
B 10 254 860376 2094.37 1928 1855 409.9
B 5 185 849756 2068.46 1928 1855 409.9
C 7 64 9831636 21410.29 1652 1635 459.1
C 15 224 5756204 12533.77 1652 1635 459.1
C 12 252 1024965 2228.87 1652 1635 459.1
D 8 176 28963419 114816.32 872 834 252.3
D 2 172 4622188 18320.42 872 834 252.3
D 3 12 431697 1708.07 872 834 252.3

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