ASTROSAT CZTI

Data Quality Report

Orbit 42085

Creation date: 2024-06-27T22:36:39.807929
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_044T22_9000005740_42085cztM0_level2.fits modeM0/AS1A12_044T22_9000005740_42085cztM0_level2_quad_clean.evt
Size (bytes)310,129,92084,274,560
Size295.8 MB 80.4 MB
Events in quadrant A3,567,200557,687
Events in quadrant B2,236,939581,828
Events in quadrant C2,348,988556,151
Events in quadrant D2,937,368505,747

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140042
B0102053
C0101022
D0122978

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0410
C0410
D0410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5000801.600000%
B4998180.360144%
C499920.040008%
D49951012.022022%

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 7062 5001 49 49 0.69% 0.98%
B 7061 5000 6 6 0.08% 0.12%
C 7061 5000 0 0 0.00% 0.00%
D 7061 4998 97 97 1.37% 1.94%

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 908214 8073.9 548 537 112.4
A 10 83 511626 4546.2 548 537 112.4
A 2 79 13801 117.98 548 537 112.4
B 5 255 68007 635.46 548 533 106.2
B 3 112 15570 141.62 548 533 106.2
B 12 111 13358 120.78 548 533 106.2
C 15 214 209089 1653.6 543 548 126.1
C 15 159 16690 128.0 543 548 126.1
C 8 79 3795 25.75 543 548 126.1
D 1 52 421078 3203.14 538 524 131.3
D 12 6 164488 1248.83 538 524 131.3
D 5 223 83413 631.32 538 524 131.3

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