ASTROSAT CZTI

Data Quality Report

Orbit 18572

Creation date: 2024-06-27T17:51:50.691867
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_167T01_9000002758_18572cztM0_level2.evt modeM0/AS1A05_167T01_9000002758_18572cztM0_level2_quad_clean.evt
Size (bytes)488,586,24099,040,320
Size466.0 MB 94.5 MB
Events in quadrant A3,182,341641,939
Events in quadrant B3,181,870667,283
Events in quadrant C3,391,963648,386
Events in quadrant D4,625,284614,307

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133392
B0132712
C0138662
D0178592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6125500.816327%
B6125370.604082%
C61251171.910204%
D61252764.506122%

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 7445 6126 12 12 0.16% 0.20%
B 7445 6126 5 5 0.07% 0.08%
C 7445 6126 28 28 0.38% 0.46%
D 7445 6126 207 207 2.78% 3.38%

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 14 111 80847 503.78 795 782 158.9
A 4 2 36504 224.77 795 782 158.9
A 13 254 10251 59.58 795 782 158.9
B 12 111 17710 110.97 806 789 152.5
B 6 36 16968 106.1 806 789 152.5
B 0 198 15964 99.52 806 789 152.5
C 14 238 122431 669.86 781 789 181.6
C 4 254 108947 595.6 781 789 181.6
C 9 54 69312 377.34 781 789 181.6
D 1 52 869130 4645.74 770 751 186.9
D 7 238 540329 2886.69 770 751 186.9
D 9 1 200521 1068.75 770 751 186.9

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