ASTROSAT CZTI

Data Quality Report

Orbit 40259

Creation date: 2024-06-27T22:14:17.194351
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_022T01_9000005536_40259cztM0_level2.fits modeM0/AS1A12_022T01_9000005536_40259cztM0_level2_quad_clean.evt
Size (bytes)312,606,72093,136,320
Size298.1 MB 88.8 MB
Events in quadrant A2,991,957617,478
Events in quadrant B2,452,491648,181
Events in quadrant C2,624,921627,762
Events in quadrant D3,092,408558,509

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121443
B0108362
C0110092
D0128932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5257721.369602%
B525790.171200%
C5257150.285334%
D52571983.766407%

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 9533 5259 48 48 0.50% 0.91%
B 9533 5259 2 2 0.02% 0.04%
C 9533 5259 8 8 0.08% 0.15%
D 9533 5259 178 178 1.87% 3.38%

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 445497 3729.53 584 573 119.3
A 13 248 254045 2124.7 584 573 119.3
A 13 6 16852 136.46 584 573 119.3
B 0 245 59831 519.04 593 576 114.2
B 5 255 53154 460.55 593 576 114.2
B 12 111 14111 118.56 593 576 114.2
C 15 214 228320 1659.01 588 592 137.3
C 14 254 74677 539.71 588 592 137.3
C 0 10 16114 113.08 588 592 137.3
D 12 227 516843 3686.66 569 553 140.0
D 13 249 226558 1613.83 569 553 140.0
D 9 19 123008 874.41 569 553 140.0

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