ASTROSAT CZTI

Data Quality Report

Orbit 39431

Creation date: 2024-06-27T22:04:28.511090
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/AS1A12_077T06_9000005474_39431cztM0_level2.fits modeM0/AS1A12_077T06_9000005474_39431cztM0_level2_quad_clean.evt
Size (bytes)425,816,64089,352,000
Size406.1 MB 85.2 MB
Events in quadrant A4,773,914595,867
Events in quadrant B2,532,425648,333
Events in quadrant C4,065,378591,308
Events in quadrant D3,993,658512,010

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176993
B0109232
C0155392
D0153832

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51132865.593585%
B5113280.547624%
C51132765.398005%
D51134749.270487%

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 7086 5114 231 231 3.26% 4.52%
B 7086 5114 14 14 0.20% 0.27%
C 7086 5114 239 239 3.37% 4.67%
D 7086 5114 426 426 6.01% 8.33%

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 15 222 2088626 18107.13 572 562 115.3
A 10 83 418497 3624.22 572 562 115.3
A 2 79 26935 228.7 572 562 115.3
B 8 3 188370 1678.06 583 567 111.9
B 5 255 29857 261.71 583 567 111.9
B 5 172 17750 153.53 583 567 111.9
C 15 208 1508716 11712.81 555 560 128.8
C 15 214 210392 1629.62 555 560 128.8
C 9 187 106466 822.5 555 560 128.8
D 12 227 1193052 9112.73 538 521 130.9
D 13 249 363703 2775.26 538 521 130.9
D 15 0 136431 1038.56 538 521 130.9

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