ASTROSAT CZTI

Data Quality Report

Orbit 41335

Creation date: 2024-06-27T22:27:46.320480
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_037T03_9000005654_41335cztM0_level2.fits modeM0/AS1A12_037T03_9000005654_41335cztM0_level2_quad_clean.evt
Size (bytes)492,013,44090,607,680
Size469.2 MB 86.4 MB
Events in quadrant A3,231,001647,715
Events in quadrant B7,827,989507,164
Events in quadrant C3,509,919599,734
Events in quadrant D3,182,590574,695

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131533
B0273272
C0140972
D0135882

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5934170.286485%
B5934171028.816987%
C59342674.499494%
D59341031.735760%

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 8679 5936 4 4 0.05% 0.07%
B 8679 5935 1570 1570 18.09% 26.45%
C 8679 5936 267 267 3.08% 4.50%
D 8678 5935 86 86 0.99% 1.45%

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 563721 4151.13 655 642 135.6
A 2 79 96445 706.28 655 642 135.6
A 13 248 19652 140.15 655 642 135.6
B 5 255 5407395 46412.81 595 578 116.5
B 0 190 42569 360.46 595 578 116.5
B 0 155 23321 195.23 595 578 116.5
C 0 10 646083 4424.53 619 621 145.9
C 15 214 249110 1703.35 619 621 145.9
C 9 54 200647 1371.14 619 621 145.9
D 13 249 352931 2249.9 634 617 156.6
D 2 249 78257 495.81 634 617 156.6
D 5 222 72615 459.78 634 617 156.6

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