ASTROSAT CZTI

Data Quality Report

Orbit 18690

Creation date: 2024-06-27T17:53:27.596447
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_072T04_9000002794_18690cztM0_level2.evt modeM0/AS1A05_072T04_9000002794_18690cztM0_level2_quad_clean.evt
Size (bytes)507,628,80096,229,440
Size484.1 MB 91.8 MB
Events in quadrant A3,517,984605,759
Events in quadrant B3,683,383616,676
Events in quadrant C3,787,221600,018
Events in quadrant D3,897,660592,069

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151513
B0156133
C0157083
D0164563

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71731061.477764%
B71741542.146641%
C71742062.871480%
D71741081.505436%

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 8574 7176 14 14 0.16% 0.20%
B 8575 7177 9 9 0.10% 0.13%
C 8575 7177 21 21 0.24% 0.29%
D 8575 7177 19 19 0.22% 0.26%

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 83519 465.04 886 868 177.7
A 13 254 11024 57.14 886 868 177.7
A 11 29 10531 54.37 886 868 177.7
B 7 220 87549 508.47 887 864 170.5
B 0 230 27604 156.85 887 864 170.5
B 0 197 25970 147.27 887 864 170.5
C 9 54 193107 961.65 856 861 199.9
C 14 238 133712 664.54 856 861 199.9
C 3 233 99448 493.15 856 861 199.9
D 1 52 297096 1391.22 871 845 212.9
D 7 238 228100 1067.21 871 845 212.9
D 7 38 54156 250.35 871 845 212.9

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