ASTROSAT CZTI

Data Quality Report

Orbit 17531

Creation date: 2024-06-27T17:37:40.272508
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_140T01_9000002596_17531cztM0_level2.evt modeM0/AS1A05_140T01_9000002596_17531cztM0_level2_quad_clean.evt
Size (bytes)496,745,28076,521,600
Size473.7 MB 73.0 MB
Events in quadrant A3,486,509464,406
Events in quadrant B3,634,023464,210
Events in quadrant C3,766,111447,140
Events in quadrant D3,674,710446,527

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148232
B0151512
C0153662
D0155612

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71041331.872185%
B71041612.266329%
C71041622.280405%
D71041411.984797%

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 7954 7104 0 0 0.00% 0.00%
B 7954 7104 8 8 0.10% 0.11%
C 7954 7104 0 0 0.00% 0.00%
D 7954 7104 47 47 0.59% 0.66%

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 25796 138.57 900 882 179.8
A 0 226 7996 39.57 900 882 179.8
A 12 194 6610 31.86 900 882 179.8
B 10 245 80694 472.3 893 873 169.0
B 0 189 30078 172.81 893 873 169.0
B 12 111 20068 113.58 893 873 169.0
C 3 233 241987 1204.23 860 868 200.2
C 14 238 134119 665.5 860 868 200.2
C 5 218 35988 175.4 860 868 200.2
D 2 14 176317 827.53 877 852 212.0
D 13 189 62650 291.45 877 852 212.0
D 5 222 59456 276.39 877 852 212.0

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