ASTROSAT CZTI

Data Quality Report

Orbit 23173

Creation date: 2024-06-27T18:50:51.914887
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/AS1A07_148T05_9000003424_23173cztM0_level2.evt modeM0/AS1A07_148T05_9000003424_23173cztM0_level2_quad_clean.evt
Size (bytes)538,608,96087,681,600
Size513.7 MB 83.6 MB
Events in quadrant A3,672,293555,187
Events in quadrant B3,519,778571,782
Events in quadrant C4,279,408554,016
Events in quadrant D4,414,550535,767

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150102
B0146002
C0166642
D0173702

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62821302.069405%
B62821131.798790%
C62823205.093919%
D62822844.520853%

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 7592 6283 29 29 0.38% 0.46%
B 7592 6282 5 5 0.07% 0.08%
C 7592 6282 35 35 0.46% 0.56%
D 7592 6283 129 129 1.70% 2.05%

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 6 16 265301 1482.9 884 867 178.3
A 13 254 9571 48.81 884 867 178.3
A 0 226 7687 38.24 884 867 178.3
B 0 245 23637 137.15 889 871 166.0
B 12 111 18656 107.14 889 871 166.0
B 11 111 16544 94.42 889 871 166.0
C 8 208 599534 3034.64 857 869 197.3
C 0 10 183249 924.49 857 869 197.3
C 14 238 135749 683.71 857 869 197.3
D 7 238 727376 3488.27 868 848 208.3
D 1 52 173022 826.66 868 848 208.3
D 12 233 133029 634.64 868 848 208.3

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