ASTROSAT CZTI

Data Quality Report

Orbit 46985

Creation date: 2024-06-27T23:30:19.577581
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/AS1A13_071T08_9000006292_46985cztM0_level2.fits modeM0/AS1A13_071T08_9000006292_46985cztM0_level2_quad_clean.evt
Size (bytes)664,767,36092,427,840
Size634.0 MB 88.1 MB
Events in quadrant A6,286,901668,574
Events in quadrant B11,347,123394,418
Events in quadrant C2,940,853672,988
Events in quadrant D3,537,678616,608

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229853
B0381497
C0136341
D0151291

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63852874.494910%
B6384329951.676065%
C6386651.017852%
D63861141.785155%

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 7025 6386 33 33 0.47% 0.52%
B 7025 6386 2564 2564 36.50% 40.15%
C 7026 6387 50 50 0.71% 0.78%
D 7026 6387 96 96 1.37% 1.50%

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 3340510 23251.67 690 675 143.6
A 14 248 112645 779.52 690 675 143.6
A 9 191 71530 493.28 690 675 143.6
B 3 112 8823505 77395.17 578 562 114.0
B 4 171 139157 1215.76 578 562 114.0
B 5 32 41738 361.2 578 562 114.0
C 14 254 189287 1169.9 684 686 161.2
C 12 2 73596 452.26 684 686 161.2
C 13 61 4691 24.84 684 686 161.2
D 1 52 264390 1549.33 678 656 170.2
D 7 96 262624 1538.95 678 656 170.2
D 13 249 169068 989.35 678 656 170.2

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