ASTROSAT CZTI

Data Quality Report

Orbit 39907

Creation date: 2024-06-27T22:10:10.915500
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/AS1A12_068T03_9000005508_39907cztM0_level2.fits modeM0/AS1A12_068T03_9000005508_39907cztM0_level2_quad_clean.evt
Size (bytes)516,571,200127,189,440
Size492.6 MB 121.3 MB
Events in quadrant A6,381,151763,202
Events in quadrant B3,840,913904,778
Events in quadrant C3,735,855865,827
Events in quadrant D4,549,912767,707

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0332
B0332
C0343
D0331

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0268022799
B0183481528
C0174731440
D0214622086

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017510
B018014
C017810
D017710

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A780293111.932838%
B7939250.314901%
C791870.088406%
D78832393.031841%

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 12192 8192 845 845 6.93% 10.31%
B 12195 8245 11 11 0.09% 0.13%
C 12195 8225 4 4 0.03% 0.05%
D 12157 8222 200 200 1.65% 2.43%

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 6 10 2675838 16153.37 811 794 165.6
A 10 83 499642 3012.32 811 794 165.6
A 13 248 29180 171.41 811 794 165.6
B 5 255 97305 570.74 875 850 169.0
B 0 229 91596 536.96 875 850 169.0
B 0 230 52409 305.08 875 850 169.0
C 15 214 345304 1711.9 858 865 201.2
C 14 254 25977 124.81 858 865 201.2
C 0 10 10375 47.27 858 865 201.2
D 12 227 613734 3012.57 840 817 203.5
D 2 250 148051 723.68 840 817 203.5
D 12 233 143390 700.77 840 817 203.5

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