ASTROSAT CZTI

Data Quality Report

Orbit 13000

Creation date: 2024-06-27T16:34:55.985295
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/AS1G08_055T01_9000001912_13000cztM0_level2.evt modeM0/AS1G08_055T01_9000001912_13000cztM0_level2_quad_clean.evt
Size (bytes)501,520,32089,645,760
Size478.3 MB 85.5 MB
Events in quadrant A3,333,129574,775
Events in quadrant B4,354,995552,201
Events in quadrant C3,127,396578,381
Events in quadrant D3,924,327548,473

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139893
B0171252
C0136572
D0159442

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66051862.816048%
B66055528.357305%
C66051372.074186%
D66052443.694171%

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 7506 6607 0 0 0.00% 0.00%
B 7506 6607 211 211 2.81% 3.19%
C 7506 6607 0 0 0.00% 0.00%
D 7506 6607 79 79 1.05% 1.20%

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 12 189 121950 737.57 814 797 164.3
A 1 162 41543 248.06 814 797 164.3
A 1 178 15215 87.78 814 797 164.3
B 4 239 903126 6148.94 781 760 146.8
B 0 219 217189 1474.8 781 760 146.8
B 3 64 65756 442.9 781 760 146.8
C 13 61 5938 27.95 801 803 183.7
C 14 234 3662 15.56 801 803 183.7
C 12 4 1950 6.24 801 803 183.7
D 1 52 830322 4412.11 791 766 188.0
D 14 49 39452 205.76 791 766 188.0
D 8 195 38635 201.41 791 766 188.0

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