ASTROSAT CZTI

Data Quality Report

Orbit 43797

Creation date: 2024-06-27T22:55:53.838776
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_018T01_9000005906_43797cztM0_level2.fits modeM0/AS1A13_018T01_9000005906_43797cztM0_level2_quad_clean.evt
Size (bytes)703,416,960117,817,920
Size670.8 MB 112.4 MB
Events in quadrant A4,841,276838,746
Events in quadrant B4,568,881853,249
Events in quadrant C8,123,061667,892
Events in quadrant D7,918,876680,862

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198320
B0186870
C0293470
D0287731

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7570791.043593%
B75712052.707700%
C7571161621.344604%
D757099713.170410%

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 7570 7570 37 37 0.49% 0.49%
B 7571 7571 113 113 1.49% 1.49%
C 7571 7571 1480 1480 19.55% 19.55%
D 7570 7570 870 870 11.49% 11.49%

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 1040393 5642.32 879 859 184.2
A 13 248 200842 1085.46 879 859 184.2
A 15 223 172907 933.83 879 859 184.2
B 5 235 298303 1730.37 870 845 171.9
B 0 200 160610 929.38 870 845 171.9
B 4 170 150567 870.96 870 845 171.9
C 15 174 2608520 14487.43 766 771 180.0
C 15 157 1145208 6357.95 766 771 180.0
C 15 158 635816 3528.01 766 771 180.0
D 12 33 1422978 6854.68 818 792 207.5
D 5 235 1081246 5207.59 818 792 207.5
D 1 52 776038 3736.55 818 792 207.5

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