ASTROSAT CZTI

Data Quality Report

Orbit 19473

Creation date: 2024-06-27T18:03:16.212130
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/AS1A05_229T02_9000002890_19473cztM0_level2.evt modeM0/AS1A05_229T02_9000002890_19473cztM0_level2_quad_clean.evt
Size (bytes)576,708,48094,821,120
Size550.0 MB 90.4 MB
Events in quadrant A3,625,793596,440
Events in quadrant B3,787,485602,474
Events in quadrant C5,089,976577,276
Events in quadrant D4,451,090570,605

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156822
B0160552
C0202482
D0184254

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7537791.048162%
B75381331.764394%
C75382353.117538%
D75372373.144487%

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 8252 7539 9 9 0.11% 0.12%
B 8253 7540 28 28 0.34% 0.37%
C 8253 7538 5 5 0.06% 0.07%
D 8252 7538 150 150 1.82% 1.99%

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 4 2 35064 183.28 920 900 186.4
A 11 29 24790 128.16 920 900 186.4
A 3 1 17802 90.67 920 900 186.4
B 7 220 108377 608.15 916 891 176.7
B 0 197 24822 135.4 916 891 176.7
B 3 64 23234 126.41 916 891 176.7
C 3 233 1114353 5396.74 875 878 206.3
C 9 221 381116 1842.92 875 878 206.3
C 14 238 135741 653.65 875 878 206.3
D 1 52 442395 2058.0 880 855 214.5
D 12 218 266110 1236.35 880 855 214.5
D 7 238 212412 986.06 880 855 214.5

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