ASTROSAT CZTI

Data Quality Report

Orbit 43420

Creation date: 2024-06-27T22:51:47.251871
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_018T01_9000005874_43420cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43420cztM0_level2_quad_clean.evt
Size (bytes)394,914,24088,689,600
Size376.6 MB 84.6 MB
Events in quadrant A3,165,768601,030
Events in quadrant B3,123,520617,314
Events in quadrant C2,624,853587,561
Events in quadrant D5,266,846486,244

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127442
B0133062
C0114852
D0197102

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5623490.871421%
B5623811.440512%
C562390.160057%
D562374213.195803%

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 7145 5624 31 31 0.43% 0.55%
B 7145 5624 62 62 0.87% 1.10%
C 7145 5624 9 9 0.13% 0.16%
D 7145 5624 720 720 10.08% 12.80%

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 637296 5240.78 594 582 121.5
A 15 237 206956 1698.66 594 582 121.5
A 7 3 10029 77.76 594 582 121.5
B 0 189 448127 3915.5 591 575 114.3
B 5 255 122771 1069.06 591 575 114.3
B 0 186 78840 684.72 591 575 114.3
C 15 214 234453 1729.75 578 579 135.2
C 3 233 94462 694.37 578 579 135.2
C 0 239 33954 246.84 578 579 135.2
D 1 52 1722973 12850.53 548 530 134.0
D 1 47 819407 6109.35 548 530 134.0
D 2 249 260982 1943.14 548 530 134.0

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