ASTROSAT CZTI

Data Quality Report

Orbit 33773

Creation date: 2024-06-27T20:52:30.763399
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/AS1A11_086T01_9000004820_33773cztM0_level2.evt modeM0/AS1A11_086T01_9000004820_33773cztM0_level2_quad_clean.evt
Size (bytes)548,858,88090,478,080
Size523.4 MB 86.3 MB
Events in quadrant A4,648,446583,860
Events in quadrant B3,088,192623,844
Events in quadrant C3,123,966624,878
Events in quadrant D5,422,831555,766

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172653
B0123962
C0125952
D0195362

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A501856711.299322%
B50181312.610602%
C5018871.733758%
D501863512.654444%

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 7052 5019 460 460 6.52% 9.17%
B 7052 5019 98 98 1.39% 1.95%
C 7052 5019 71 71 1.01% 1.41%
D 7052 5019 617 617 8.75% 12.29%

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 15 237 1718501 14980.89 570 559 114.7
A 15 169 690162 6013.51 570 559 114.7
A 13 6 15523 130.49 570 559 114.7
B 5 172 507232 4438.48 598 584 114.1
B 4 81 49410 427.74 598 584 114.1
B 4 251 34703 298.9 598 584 114.1
C 15 214 219943 1632.31 590 597 134.4
C 9 187 198120 1469.91 590 597 134.4
C 3 233 197070 1462.09 590 597 134.4
D 8 195 1163293 7997.12 542 532 145.4
D 1 47 743210 5107.91 542 532 145.4
D 2 250 687721 4726.28 542 532 145.4

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