ASTROSAT CZTI

Data Quality Report

Orbit 16930

Creation date: 2024-06-27T17:29:38.587518
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/AS1T03_013T01_9000002514_16930cztM0_level2.evt modeM0/AS1T03_013T01_9000002514_16930cztM0_level2_quad_clean.evt
Size (bytes)864,887,040134,130,240
Size824.8 MB 127.9 MB
Events in quadrant A6,394,569883,996
Events in quadrant B4,315,830912,250
Events in quadrant C7,847,326857,725
Events in quadrant D7,025,817781,270

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249322
B0188402
C0297352
D0272562

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01860
B01860
C01860
D01860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A90252773.069252%
B9026730.808775%
C90255165.717452%
D9025116912.952909%

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 10951 9028 111 111 1.01% 1.23%
B 10952 9029 21 21 0.19% 0.23%
C 10951 9028 56 56 0.51% 0.62%
D 10951 9028 570 570 5.21% 6.31%

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 15 174 2339067 10992.4 1055 1031 212.7
A 0 226 9321 38.98 1055 1031 212.7
A 3 137 7625 31.0 1055 1031 212.7
B 15 35 107045 522.3 1060 1033 203.0
B 12 111 24054 113.42 1060 1033 203.0
B 11 111 21126 98.99 1060 1033 203.0
C 3 233 3747876 16059.6 1008 1014 233.3
C 14 238 154595 658.27 1008 1014 233.3
C 14 225 11031 42.93 1008 1014 233.3
D 1 52 3366559 15024.52 929 902 224.0
D 2 152 62246 273.84 929 902 224.0
D 15 145 48541 212.66 929 902 224.0

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