ASTROSAT CZTI

Data Quality Report

Orbit 50912

Creation date: 2025-02-26T11:10:05.394329
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/AS1C07_001T01_9000006450_50912cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50912cztM0_level2_quad_clean.evt
Size (bytes)688,541,76080,144,640
Size656.6 MB 76.4 MB
Events in quadrant A13,071,782231,913
Events in quadrant B4,452,929641,586
Events in quadrant C3,748,986576,503
Events in quadrant D3,723,818535,975

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01291
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A043339192
B017883164
C01543639
D01576247

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6309421466.793470%
B63113715.878625%
C63161342.121596%
D63142183.452645%

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 7386 6311 3879 3879 52.52% 61.46%
B 7389 6312 241 241 3.26% 3.82%
C 7392 6318 104 104 1.41% 1.65%
D 7389 6314 140 140 1.89% 2.22%

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 4 9900427 73640.03 524 509 134.4
A 7 207 257525 1911.8 524 509 134.4
A 4 3 189872 1408.57 524 509 134.4
B 4 170 1346100 9630.32 655 632 139.7
B 7 252 179205 1278.15 655 632 139.7
B 10 247 69169 490.56 655 632 139.7
C 12 247 246181 1368.93 643 638 179.4
C 5 10 195399 1085.81 643 638 179.4
C 14 254 115611 640.99 643 638 179.4
D 7 45 334266 1886.16 636 611 176.9
D 2 249 285042 1607.9 636 611 176.9
D 10 24 130190 732.51 636 611 176.9

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