ASTROSAT CZTI

Data Quality Report

Orbit 42591

Creation date: 2024-06-27T22:41:56.315094
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_061T07_9000005818_42591cztM0_level2.fits modeM0/AS1A12_061T07_9000005818_42591cztM0_level2_quad_clean.evt
Size (bytes)947,514,240284,207,040
Size903.6 MB 271.0 MB
Events in quadrant A8,849,7501,907,055
Events in quadrant B7,578,4711,958,059
Events in quadrant C8,091,8361,880,989
Events in quadrant D9,243,1191,693,756

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0365354
B0344954
C0345154
D0395284

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03440
B03440
C03440
D03440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0630
D0630

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16907270.159697%
B16907400.236588%
C16908170.100544%
D169083642.152827%

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 38331 16911 13 13 0.03% 0.08%
B 38331 16911 22 22 0.06% 0.13%
C 38332 16912 9 9 0.02% 0.05%
D 38332 16912 315 315 0.82% 1.86%

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 10 83 1556047 4116.45 1862 1824 377.6
A 13 248 32959 82.46 1862 1824 377.6
A 7 3 29455 73.18 1862 1824 377.6
B 0 245 110214 308.5 1850 1801 351.4
B 5 255 79086 219.92 1850 1801 351.4
B 12 111 44444 121.35 1850 1801 351.4
C 15 214 699461 1642.26 1843 1854 424.8
C 14 254 73222 168.01 1843 1854 424.8
C 0 207 59696 136.17 1843 1854 424.8
D 12 6 725767 1645.54 1821 1774 440.0
D 1 52 695847 1577.54 1821 1774 440.0
D 12 233 210096 473.49 1821 1774 440.0

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