ASTROSAT CZTI

Data Quality Report

Orbit 47667

Creation date: 2024-07-22T01:02:13.056706
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/AS1A13_082T01_9000006342_47667cztM0_level2.fits modeM0/AS1A13_082T01_9000006342_47667cztM0_level2_quad_clean.evt
Size (bytes)278,726,40058,224,960
Size265.8 MB 55.5 MB
Events in quadrant A4,256,804359,395
Events in quadrant B1,951,372390,047
Events in quadrant C1,865,584389,798
Events in quadrant D1,949,463357,666

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016305906
B08759369
C08778387
D08933408

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0824
B0813
C0855
D0825

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A051
B040
C040
D073

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A373741110.998127%
B37752306.092715%
C37771253.309505%
D37731493.949112%

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 6639 3792 31 31 0.47% 0.82%
B 6647 3823 2 2 0.03% 0.05%
C 6647 3820 21 21 0.32% 0.55%
D 6647 3823 24 24 0.36% 0.63%

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 10 83 2203186 23189.6 446 436 95.0
A 9 191 217383 2283.92 446 436 95.0
A 13 248 104572 1096.3 446 436 95.0
B 0 200 44827 470.35 456 440 94.4
B 0 190 33475 350.06 456 440 94.4
B 5 250 13740 140.94 456 440 94.4
C 14 254 115716 1065.76 448 450 108.2
C 3 233 3462 27.85 448 450 108.2
C 13 61 3074 24.26 448 450 108.2
D 13 29 78425 661.16 453 437 118.0
D 2 249 29955 250.24 453 437 118.0
D 5 171 27430 228.84 453 437 118.0

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