ASTROSAT CZTI

Data Quality Report

Orbit 13755

Creation date: 2024-06-27T16:45:39.158805
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/AS1G08_062T01_9000002038_13755cztM0_level2.evt modeM0/AS1G08_062T01_9000002038_13755cztM0_level2_quad_clean.evt
Size (bytes)518,241,60097,174,080
Size494.2 MB 92.7 MB
Events in quadrant A3,509,367603,633
Events in quadrant B4,321,381600,230
Events in quadrant C3,506,274630,320
Events in quadrant D3,866,012604,183

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150792
B0174451
C0150331
D0161711

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72372643.647920%
B72373124.311179%
C72372072.860301%
D72372463.399199%

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 7258 7239 1 1 0.01% 0.01%
B 7258 7239 22 22 0.30% 0.30%
C 7258 7239 0 0 0.00% 0.00%
D 7258 7239 24 24 0.33% 0.33%

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 1 162 29214 155.54 888 867 182.3
A 9 143 19407 101.73 888 867 182.3
A 15 69 16127 83.73 888 867 182.3
B 5 32 556127 3258.31 879 856 170.4
B 4 173 138123 805.48 879 856 170.4
B 0 219 76745 445.31 879 856 170.4
C 3 233 106686 519.0 871 872 203.9
C 13 61 6346 26.85 871 872 203.9
C 14 234 2808 9.49 871 872 203.9
D 1 52 206845 903.41 862 842 228.0
D 5 222 190559 831.98 862 842 228.0
D 13 249 85257 370.19 862 842 228.0

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