ASTROSAT CZTI

Data Quality Report

Orbit 42830

Creation date: 2024-06-27T22:44:45.181039
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/AS1T05_138T01_9000005828_42830cztM0_level2.fits modeM0/AS1T05_138T01_9000005828_42830cztM0_level2_quad_clean.evt
Size (bytes)1,021,939,200255,761,280
Size974.6 MB 243.9 MB
Events in quadrant A10,068,9681,639,050
Events in quadrant B7,499,4641,720,957
Events in quadrant C8,784,4151,746,183
Events in quadrant D10,243,3861,538,630

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0392084
B0334714
C0356514
D0414454

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03280
B03280
C03280
D03280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A159224042.537370%
B15923940.590341%
C159231781.117880%
D159235423.403881%

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 21386 15926 359 359 1.68% 2.25%
B 21387 15927 64 64 0.30% 0.40%
C 21387 15927 170 170 0.79% 1.07%
D 21387 15927 539 539 2.52% 3.38%

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 1633832 4590.05 1734 1697 355.6
A 15 222 1218902 3423.14 1734 1697 355.6
A 12 189 185760 517.64 1734 1697 355.6
B 5 255 399231 1188.6 1741 1693 334.5
B 3 112 88145 258.48 1741 1693 334.5
B 0 245 88078 258.28 1741 1693 334.5
C 14 254 945660 2335.41 1722 1736 404.2
C 15 214 646183 1594.46 1722 1736 404.2
C 3 233 369250 909.29 1722 1736 404.2
D 1 52 942404 2249.93 1704 1658 418.1
D 12 17 749393 1788.31 1704 1658 418.1
D 12 233 431864 1028.9 1704 1658 418.1

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