ASTROSAT CZTI

Data Quality Report

Orbit 25806

Creation date: 2024-06-27T19:21:38.154750
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/AS1A07_068T01_9000003756_25806cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25806cztM0_level2_quad_clean.evt
Size (bytes)478,895,04099,685,440
Size456.7 MB 95.1 MB
Events in quadrant A4,518,492650,569
Events in quadrant B3,157,941672,740
Events in quadrant C3,107,214627,175
Events in quadrant D3,302,240639,065

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176600
B0132980
C0132250
D0138410

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61524256.908322%
B6152741.202861%
C6152881.430429%
D61521181.918075%

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 7317 6152 294 294 4.02% 4.78%
B 7317 6152 6 6 0.08% 0.10%
C 7317 6152 2 2 0.03% 0.03%
D 7317 6152 71 71 0.97% 1.15%

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 0 13 1462768 9185.37 791 777 159.2
A 11 29 10361 60.21 791 777 159.2
A 13 254 9181 52.8 791 777 159.2
B 10 247 21851 142.27 786 769 148.2
B 0 219 20567 133.61 786 769 148.2
B 0 190 19328 125.24 786 769 148.2
C 14 238 122661 703.37 747 751 173.3
C 3 233 51027 290.07 747 751 173.3
C 0 207 16914 93.25 747 751 173.3
D 7 80 277033 1493.41 771 754 185.0
D 1 52 44717 237.64 771 754 185.0
D 10 230 40558 215.16 771 754 185.0

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