ASTROSAT CZTI

Data Quality Report

Orbit 26782

Creation date: 2024-06-27T19:32:52.498762
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/AS1A09_079T01_9000003864_26782cztM0_level2.evt modeM0/AS1A09_079T01_9000003864_26782cztM0_level2_quad_clean.evt
Size (bytes)591,451,200102,297,600
Size564.1 MB 97.6 MB
Events in quadrant A4,812,565657,624
Events in quadrant B3,360,369676,359
Events in quadrant C3,487,639659,362
Events in quadrant D5,779,675618,990

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189280
B0144430
C0147570
D0218060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69632403.446790%
B69641842.642160%
C69642173.116025%
D69646309.046525%

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 7308 6964 41 41 0.56% 0.59%
B 7309 6965 1 1 0.01% 0.01%
C 7309 6965 8 8 0.11% 0.11%
D 7309 6965 370 370 5.06% 5.31%

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 1414303 8365.67 846 827 169.0
A 9 130 90828 532.67 846 827 169.0
A 12 96 41882 242.98 846 827 169.0
B 12 111 19334 115.76 843 821 159.9
B 11 111 17514 104.38 843 821 159.9
B 14 111 15328 90.71 843 821 159.9
C 14 238 132842 688.92 822 827 191.6
C 2 16 95896 496.12 822 827 191.6
C 15 208 34639 176.45 822 827 191.6
D 7 80 1237722 6360.44 810 791 194.5
D 1 52 836308 4296.33 810 791 194.5
D 1 239 256708 1315.96 810 791 194.5

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