ASTROSAT CZTI

Data Quality Report

Orbit 04534

Creation date: 2024-06-27T14:43:26.504748
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/AS1G05_250T01_9000000568_04534cztM0_level2.evt modeM0/AS1G05_250T01_9000000568_04534cztM0_level2_quad_clean.evt
Size (bytes)567,241,92085,098,240
Size541.0 MB 81.2 MB
Events in quadrant A5,596,627501,940
Events in quadrant B3,630,207520,053
Events in quadrant C3,505,475510,124
Events in quadrant D3,915,408500,838

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219452
B0162331
C0162031
D0173001

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A782181510.420662%
B78212893.695180%
C78212393.055875%
D78212813.592891%

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 7861 7822 364 364 4.63% 4.65%
B 7861 7822 4 4 0.05% 0.05%
C 7861 7822 2 2 0.03% 0.03%
D 7861 7822 47 47 0.60% 0.60%

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 0 13 1662998 9288.9 868 845 178.9
A 13 251 501241 2796.45 868 845 178.9
A 8 15 48754 267.74 868 845 178.9
B 4 80 48246 270.72 904 878 175.0
B 15 204 35736 199.22 904 878 175.0
B 4 48 22247 122.13 904 878 175.0
C 1 3 39470 190.71 869 869 202.4
C 8 128 20407 96.53 869 869 202.4
C 9 54 19065 89.9 869 869 202.4
D 13 235 210515 923.23 857 833 227.1
D 1 20 173010 758.1 857 833 227.1
D 2 14 69295 301.44 857 833 227.1

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