ASTROSAT CZTI

Data Quality Report

Orbit 20137

Creation date: 2024-06-27T18:11:43.908216
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_180T01_9000002992_20137cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20137cztM0_level2_quad_clean.evt
Size (bytes)541,460,16096,863,040
Size516.4 MB 92.4 MB
Events in quadrant A3,965,814631,959
Events in quadrant B4,373,031616,593
Events in quadrant C3,647,180603,745
Events in quadrant D3,944,989601,210

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158964
B0171072
C0146612
D0161002

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68801992.892442%
B68804346.308140%
C68801121.627907%
D68801281.860465%

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 7660 6881 80 80 1.04% 1.16%
B 7660 6881 240 240 3.13% 3.49%
C 7660 6881 0 0 0.00% 0.00%
D 7660 6881 67 67 0.87% 0.97%

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 14 238 409001 2264.87 890 876 180.2
A 15 192 122895 677.14 890 876 180.2
A 14 237 8916 44.62 890 876 180.2
B 10 245 932998 5646.94 865 847 165.1
B 0 183 32489 191.68 865 847 165.1
B 12 111 19393 112.35 865 847 165.1
C 3 233 136450 689.41 847 853 196.7
C 14 238 132928 671.51 847 853 196.7
C 8 208 62477 313.31 847 853 196.7
D 1 52 599525 2867.0 863 842 208.8
D 13 249 31676 147.66 863 842 208.8
D 2 234 27675 128.5 863 842 208.8

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