ASTROSAT CZTI

Data Quality Report

Orbit 36403

Creation date: 2022-06-22T17:00:09.730602
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/AS1T04_084T01_9000005198_36403cztM0_level2.evt modeM0/AS1T04_084T01_9000005198_36403cztM0_level2_quad_clean.evt
Size (bytes)506,393,28059,152,320
Size482.9 MB 56.4 MB
Events in quadrant A2,803,077363,687
Events in quadrant B4,618,368366,368
Events in quadrant C3,019,996353,327
Events in quadrant D4,522,467323,397

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115683
B0171832
C0121632
D0170582

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5493120.218460%
B549364111.669397%
C5493891.620244%
D549357210.413253%

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 7315 5494 0 0 0.00% 0.00%
B 7315 5494 491 491 6.71% 8.94%
C 7315 5494 72 72 0.98% 1.31%
D 7315 5494 463 463 6.33% 8.43%

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 192304 1431.8 663 650 133.9
A 15 223 21648 156.87 663 650 133.9
A 13 6 12458 88.21 663 650 133.9
B 5 172 1741178 14477.73 628 610 120.2
B 0 189 129285 1070.3 628 610 120.2
B 5 255 118549 981.0 628 610 120.2
C 0 10 319070 2149.37 633 635 148.2
C 15 214 232586 1565.62 633 635 148.2
C 13 61 4246 24.37 633 635 148.2
D 12 6 1419028 9347.7 615 598 151.7
D 12 233 194880 1280.35 615 598 151.7
D 13 171 160611 1054.51 615 598 151.7

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