ASTROSAT CZTI

Data Quality Report

Orbit 07844

Creation date: 2024-06-27T15:24:42.337371
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/AS1G06_077T02_9000001076_07844cztM0_level2.evt modeM0/AS1G06_077T02_9000001076_07844cztM0_level2_quad_clean.evt
Size (bytes)460,624,32099,437,760
Size439.3 MB 94.8 MB
Events in quadrant A2,971,261641,586
Events in quadrant B3,294,408669,977
Events in quadrant C4,171,582649,831
Events in quadrant D3,093,153618,744

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128503
B0137962
C0164512
D0134302

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6186220.355642%
B6186801.293243%
C61861472.376334%
D6186360.581959%

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 7476 6187 0 0 0.00% 0.00%
B 7476 6187 19 19 0.25% 0.31%
C 7476 6187 71 71 0.95% 1.15%
D 7476 6187 20 20 0.27% 0.32%

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 0 128 9856 59.56 766 752 152.9
A 0 226 7308 42.89 766 752 152.9
A 12 194 6742 39.19 766 752 152.9
B 4 239 122107 828.64 784 769 146.4
B 10 16 58395 393.54 784 769 146.4
B 4 173 16929 110.36 784 769 146.4
C 1 16 1197658 6844.18 760 767 174.9
C 12 4 6122 30.62 760 767 174.9
C 13 61 5788 28.71 760 767 174.9
D 2 152 60230 325.73 749 728 182.7
D 2 136 46936 252.96 749 728 182.7
D 2 14 44488 239.55 749 728 182.7

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