ASTROSAT CZTI

Data Quality Report

Orbit 48481

Creation date: 2024-09-16T09:53:11.765372
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_081T01_9000006428_48481cztM0_level2.fits modeM0/AS1A13_081T01_9000006428_48481cztM0_level2_quad_clean.evt
Size (bytes)487,402,560109,414,080
Size464.8 MB 104.3 MB
Events in quadrant A7,139,561734,269
Events in quadrant B3,082,907755,154
Events in quadrant C2,919,941709,719
Events in quadrant D4,352,513622,750

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0267420
B0144640
C0143270
D0181771

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7050911.290780%
B7051100.141824%
C705150.070912%
D70503755.319149%

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 7050 7050 17 17 0.24% 0.24%
B 7051 7051 3 3 0.04% 0.04%
C 7051 7051 1 1 0.01% 0.01%
D 7051 7051 306 306 4.34% 4.34%

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 4135765 26472.08 746 730 156.2
A 13 248 61698 390.31 746 730 156.2
A 0 247 38826 243.89 746 730 156.2
B 0 186 39973 267.19 744 721 146.9
B 0 197 28674 190.28 744 721 146.9
B 8 234 22615 149.03 744 721 146.9
C 0 207 17646 97.69 732 734 173.1
C 14 254 13404 73.19 732 734 173.1
C 14 67 11836 64.13 732 734 173.1
D 2 249 943309 5186.77 721 697 181.7
D 12 233 459986 2527.26 721 697 181.7
D 5 32 55098 299.34 721 697 181.7

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