ASTROSAT CZTI

Data Quality Report

Orbit 18026

Creation date: 2024-06-27T17:44:03.067327
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_159T01_9000002678_18026cztM0_level2.evt modeM0/AS1A05_159T01_9000002678_18026cztM0_level2_quad_clean.evt
Size (bytes)544,106,880109,244,160
Size518.9 MB 104.2 MB
Events in quadrant A3,673,945718,418
Events in quadrant B3,804,736722,025
Events in quadrant C3,853,891688,773
Events in quadrant D4,632,415653,084

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158622
B0160942
C0163022
D0188562

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7558931.230484%
B75591171.547824%
C75591321.746263%
D75593474.590554%

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 7898 7559 6 6 0.08% 0.08%
B 7899 7560 8 8 0.10% 0.11%
C 7899 7560 0 0 0.00% 0.00%
D 7899 7560 173 173 2.19% 2.29%

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 66465 343.19 933 915 191.0
A 3 1 19073 95.07 933 915 191.0
A 0 226 8169 37.98 933 915 191.0
B 0 197 34989 189.45 937 913 179.9
B 7 220 24370 130.41 937 913 179.9
B 0 189 20554 109.2 937 913 179.9
C 14 238 139400 656.17 896 905 211.1
C 3 233 139010 654.33 896 905 211.1
C 0 207 46574 216.37 896 905 211.1
D 11 176 556189 2563.4 887 863 216.6
D 7 38 340804 1569.17 887 863 216.6
D 5 222 288667 1328.51 887 863 216.6

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