ASTROSAT CZTI

Data Quality Report

Orbit 20551

Creation date: 2024-06-27T18:16:45.377045
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_069T02_9000003038_20551cztM0_level2.evt modeM0/AS1A05_069T02_9000003038_20551cztM0_level2_quad_clean.evt
Size (bytes)480,934,08085,109,760
Size458.7 MB 81.2 MB
Events in quadrant A3,634,119538,960
Events in quadrant B3,488,650546,058
Events in quadrant C3,443,635516,184
Events in quadrant D3,546,232511,718

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151882
B0146212
C0144302
D0149682

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66591352.027331%
B66591342.012314%
C66591552.327677%
D66601061.591592%

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 8784 6661 5 5 0.06% 0.08%
B 8784 6661 0 0 0.00% 0.00%
C 8784 6661 0 0 0.00% 0.00%
D 8785 6662 11 11 0.13% 0.17%

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 162898 910.18 886 867 178.0
A 14 111 51505 284.45 886 867 178.0
A 0 226 7508 37.3 886 867 178.0
B 12 111 20095 114.46 878 856 168.1
B 0 219 19554 111.24 878 856 168.1
B 11 111 17983 101.89 878 856 168.1
C 14 238 131239 660.4 846 851 197.4
C 8 208 12642 59.72 846 851 197.4
C 13 61 5840 25.27 846 851 197.4
D 1 52 275249 1314.78 863 838 208.7
D 2 234 23679 109.44 863 838 208.7
D 13 153 8801 38.15 863 838 208.7

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