ASTROSAT CZTI

Data Quality Report

Orbit 27347

Creation date: 2024-06-27T19:39:08.839546
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/AS1T03_255T01_9000003922_27347cztM0_level2.evt modeM0/AS1T03_255T01_9000003922_27347cztM0_level2_quad_clean.evt
Size (bytes)585,576,00096,036,480
Size558.4 MB 91.6 MB
Events in quadrant A3,347,410630,450
Events in quadrant B4,100,373621,261
Events in quadrant C4,747,247591,195
Events in quadrant D5,068,877581,686

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143890
B0166740
C0188590
D0196450

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6936480.692042%
B69362964.267589%
C69365658.145905%
D69372223.200231%

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 7276 6937 1 1 0.01% 0.01%
B 7276 6937 149 149 2.05% 2.15%
C 7276 6937 298 298 4.10% 4.30%
D 7277 6938 219 219 3.01% 3.16%

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 13 254 11992 63.51 862 846 175.5
A 13 248 9687 50.38 862 846 175.5
A 12 189 9111 47.1 862 846 175.5
B 5 172 676428 4195.1 845 824 161.0
B 0 190 45319 276.28 845 824 161.0
B 0 229 18859 111.98 845 824 161.0
C 8 208 1239425 6630.48 793 799 186.8
C 2 16 226590 1208.68 793 799 186.8
C 14 238 125200 665.93 793 799 186.8
D 1 52 1465680 7028.86 814 796 208.4
D 2 250 320296 1533.04 814 796 208.4
D 11 176 67792 321.46 814 796 208.4

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