ASTROSAT CZTI

Data Quality Report

Orbit 16794

Creation date: 2024-06-27T17:28:03.168793
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_004T07_9000002492_16794cztM0_level2.evt modeM0/AS1A05_004T07_9000002492_16794cztM0_level2_quad_clean.evt
Size (bytes)594,385,920100,506,240
Size566.9 MB 95.9 MB
Events in quadrant A4,510,728636,288
Events in quadrant B3,811,507658,434
Events in quadrant C4,371,211635,574
Events in quadrant D4,816,651608,793

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182293
B0159962
C0177112
D0191422

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72463655.037262%
B72461502.070108%
C72461802.484129%
D72463945.437483%

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 7652 7249 208 208 2.72% 2.87%
B 7652 7249 24 24 0.31% 0.33%
C 7652 7249 0 0 0.00% 0.00%
D 7652 7249 233 233 3.04% 3.21%

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 923961 5153.29 879 860 179.1
A 15 190 100119 554.12 879 860 179.1
A 15 158 43937 240.48 879 860 179.1
B 0 229 193427 1125.85 887 862 171.0
B 15 35 47529 272.84 887 862 171.0
B 0 189 45846 263.0 887 862 171.0
C 3 233 615113 3031.59 856 863 202.6
C 7 247 199179 978.77 856 863 202.6
C 14 238 132130 647.86 856 863 202.6
D 1 52 1191507 5655.74 855 828 210.5
D 12 218 98934 466.0 855 828 210.5
D 13 248 69942 328.29 855 828 210.5

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