ASTROSAT CZTI

Data Quality Report

Orbit 21339

Creation date: 2024-06-27T18:26:35.094740
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/AS1A05_108T01_9000003146_21339cztM0_level2.evt modeM0/AS1A05_108T01_9000003146_21339cztM0_level2_quad_clean.evt
Size (bytes)495,959,040106,381,440
Size473.0 MB 101.5 MB
Events in quadrant A3,714,055686,089
Events in quadrant B3,690,873698,580
Events in quadrant C3,455,243669,004
Events in quadrant D3,660,389656,153

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156433
B0158142
C0151242
D0161202

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7353240.326397%
B7353931.264790%
C7353440.598395%
D7353560.761594%

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 7913 7354 2 2 0.03% 0.03%
B 7913 7354 37 37 0.47% 0.50%
C 7913 7354 0 0 0.00% 0.00%
D 7913 7354 37 37 0.47% 0.50%

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 5 168 227796 1271.39 887 869 178.5
A 5 16 34806 190.14 887 869 178.5
A 15 174 19099 102.14 887 869 178.5
B 3 64 94843 553.7 885 861 169.7
B 0 230 59568 345.88 885 861 169.7
B 0 197 31277 179.2 885 861 169.7
C 14 238 133311 666.27 849 856 198.8
C 3 233 6938 30.59 849 856 198.8
C 13 61 6007 25.91 849 856 198.8
D 1 52 138060 655.61 856 832 209.3
D 13 174 118861 563.88 856 832 209.3
D 13 172 57749 271.92 856 832 209.3

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