ASTROSAT CZTI

Data Quality Report

Orbit 41454

Creation date: 2024-06-27T22:29:15.811389
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_100T01_9000005668_41454cztM0_level2.fits modeM0/AS1T05_100T01_9000005668_41454cztM0_level2_quad_clean.evt
Size (bytes)957,196,800247,083,840
Size912.9 MB 235.6 MB
Events in quadrant A8,287,2221,662,405
Events in quadrant B7,106,1071,706,556
Events in quadrant C8,378,0871,571,450
Events in quadrant D10,453,7121,464,673

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03220
B03220
C03220
D03220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0339345
B0318764
C0345094
D0419774

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15584460.295175%
B15584270.173255%
C155844512.893994%
D155845083.259754%

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 21133 15588 17 17 0.08% 0.11%
B 21133 15588 7 7 0.03% 0.04%
C 21133 15588 424 424 2.01% 2.72%
D 21133 15588 465 465 2.20% 2.98%

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 1400092 3965.16 1715 1676 352.7
A 13 248 164125 460.62 1715 1676 352.7
A 2 79 80589 223.76 1715 1676 352.7
B 0 190 258819 792.4 1702 1653 324.5
B 0 186 64991 195.16 1702 1653 324.5
B 12 111 42473 125.78 1702 1653 324.5
C 0 10 1274506 3331.77 1648 1659 382.0
C 15 214 643391 1679.78 1648 1659 382.0
C 12 249 31710 78.66 1648 1659 382.0
D 5 222 1847170 4538.39 1657 1611 406.7
D 1 47 1021484 2507.96 1657 1611 406.7
D 13 249 765067 1877.41 1657 1611 406.7

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