ASTROSAT CZTI

Data Quality Report

Orbit 42739

Creation date: 2024-06-27T22:43:41.041877
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/AS1A05_013T01_9000005822_42739cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42739cztM0_level2_quad_clean.evt
Size (bytes)354,657,60091,353,600
Size338.2 MB 87.1 MB
Events in quadrant A3,123,575623,878
Events in quadrant B2,737,314628,643
Events in quadrant C4,259,437556,648
Events in quadrant D2,570,607564,027

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124952
B0120272
C0161352
D0117442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5611250.445553%
B56111011.800036%
C561156910.140795%
D5611190.338621%

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 7135 5612 15 15 0.21% 0.27%
B 7135 5612 78 78 1.09% 1.39%
C 7135 5612 550 550 7.71% 9.80%
D 7135 5612 14 14 0.20% 0.25%

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 595365 4622.6 622 610 128.7
A 13 248 73524 566.71 622 610 128.7
A 12 189 44853 343.87 622 610 128.7
B 5 172 266243 2236.98 611 594 118.8
B 0 230 21223 173.71 611 594 118.8
B 12 111 15087 122.04 611 594 118.8
C 0 239 1650389 12207.78 571 573 135.1
C 15 214 225006 1660.69 571 573 135.1
C 14 254 70918 520.52 571 573 135.1
D 2 249 45988 306.78 605 588 148.0
D 5 171 41204 274.45 605 588 148.0
D 12 6 37555 249.79 605 588 148.0

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