ASTROSAT CZTI

Data Quality Report

Orbit 21179

Creation date: 2024-06-27T18:24:30.352722
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_062T01_9000003132_21179cztM0_level2.evt modeM0/AS1A05_062T01_9000003132_21179cztM0_level2_quad_clean.evt
Size (bytes)540,397,44091,319,040
Size515.4 MB 87.1 MB
Events in quadrant A3,547,590574,926
Events in quadrant B3,612,344591,072
Events in quadrant C3,410,993574,213
Events in quadrant D5,323,308540,453

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152202
B0151582
C0145152
D0204512

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69551492.142344%
B6955801.150252%
C6955761.092739%
D69552533.637671%

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 8910 6957 65 65 0.73% 0.93%
B 8910 6957 1 1 0.01% 0.01%
C 8910 6957 1 1 0.01% 0.01%
D 8910 6957 228 228 2.56% 3.28%

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 5 16 309474 1819.73 837 820 169.6
A 13 254 11635 63.76 837 820 169.6
A 0 226 7336 38.42 837 820 169.6
B 0 182 79328 482.96 849 831 162.5
B 0 230 42792 258.17 849 831 162.5
B 0 190 42630 257.17 849 831 162.5
C 14 238 126825 670.06 812 815 188.1
C 3 233 99156 522.93 812 815 188.1
C 0 10 13894 69.55 812 815 188.1
D 1 52 518301 2643.2 807 784 195.8
D 1 20 455629 2323.11 807 784 195.8
D 7 238 339226 1728.58 807 784 195.8

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