ASTROSAT CZTI

Data Quality Report

Orbit 14806

Creation date: 2024-06-27T16:59:54.885279
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/AS1A04_022T02_9000002184_14806cztM0_level2.evt modeM0/AS1A04_022T02_9000002184_14806cztM0_level2_quad_clean.evt
Size (bytes)279,794,88045,682,560
Size266.8 MB 43.6 MB
Events in quadrant A2,057,951281,525
Events in quadrant B2,032,095280,695
Events in quadrant C2,216,561272,462
Events in quadrant D1,897,791270,058

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A083890
B082510
C088070
D081320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A394380.202891%
B394370.177530%
C394340.101446%
D394360.152168%

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 3944 3944 3 3 0.08% 0.08%
B 3944 3944 2 2 0.05% 0.05%
C 3944 3944 1 1 0.03% 0.03%
D 3944 3944 8 8 0.20% 0.20%

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 12 189 131716 1316.88 489 479 99.7
A 4 2 25445 250.52 489 479 99.7
A 9 143 15656 152.29 489 479 99.7
B 0 219 44361 481.75 482 470 91.1
B 3 64 33674 364.45 482 470 91.1
B 3 209 14123 149.85 482 470 91.1
C 3 233 391655 3656.94 463 465 107.0
C 0 207 11478 102.95 463 465 107.0
C 10 22 3813 31.3 463 465 107.0
D 12 110 61870 543.76 472 461 112.9
D 2 234 15613 134.17 472 461 112.9
D 10 199 15585 133.92 472 461 112.9

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