ASTROSAT CZTI

Data Quality Report

Orbit 51863

Creation date: 2025-04-30T17:21:54.518987
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/AS1C09_011T05_9000006466_51863cztM0_level2.fits modeM0/AS1C09_011T05_9000006466_51863cztM0_level2_quad_clean.evt
Size (bytes)709,583,04093,522,240
Size676.7 MB 89.2 MB
Events in quadrant A5,258,488637,176
Events in quadrant B6,430,580666,809
Events in quadrant C3,741,089632,287
Events in quadrant D10,281,670396,933

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206350
B0240040
C0163581
D0354950

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71602984.162011%
B716174010.333752%
C7160961.340782%
D7160257035.893855%

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 7160 7160 282 282 3.94% 3.94%
B 7161 7161 616 616 8.60% 8.60%
C 7160 7160 91 91 1.27% 1.27%
D 7160 7160 2512 2512 35.08% 35.08%

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 11 3 933381 5116.77 732 715 182.3
A 12 3 355499 1946.41 732 715 182.3
A 4 3 147604 805.86 732 715 182.3
B 12 32 1492182 9768.83 713 687 152.7
B 10 44 916091 5995.61 713 687 152.7
B 5 250 377968 2471.07 713 687 152.7
C 13 3 236791 1202.2 714 709 196.4
C 0 193 143394 726.6 714 709 196.4
C 15 230 90379 456.63 714 709 196.4
D 11 129 6028920 36655.66 580 559 164.5
D 6 42 449911 2732.3 580 559 164.5
D 8 176 446923 2714.13 580 559 164.5

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