ASTROSAT CZTI

Data Quality Report

Orbit 52044

Creation date: 2025-05-19T13:04:41.580090
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_52044cztM0_level2.fits modeM0/AS1C09_011T05_9000006466_52044cztM0_level2_quad_clean.evt
Size (bytes)928,952,64065,004,480
Size885.9 MB 62.0 MB
Events in quadrant A9,591,324343,671
Events in quadrant B5,978,488532,653
Events in quadrant C7,029,831432,554
Events in quadrant D11,326,042241,634

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0325681
B0219181
C0250291
D0377901

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5976258343.222892%
B597788314.773298%
C5977139723.372930%
D5977334355.931069%

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 6946 5976 2339 2339 33.67% 39.14%
B 6946 5976 729 729 10.50% 12.20%
C 6947 5977 1222 1222 17.59% 20.45%
D 6947 5977 3037 3037 43.72% 50.81%

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 7 64 6520149 52497.63 496 484 124.2
A 7 191 199571 1603.09 496 484 124.2
A 4 3 116030 930.4 496 484 124.2
B 10 128 2252761 17930.72 587 569 125.6
B 12 32 414399 3294.69 587 569 125.6
B 5 172 179957 1428.19 587 569 125.6
C 15 224 2334496 15505.91 543 537 150.5
C 4 5 1232702 8186.02 543 537 150.5
C 9 38 382804 2539.63 543 537 150.5
D 15 94 7076236 59811.17 404 384 118.3
D 12 0 812174 6861.95 404 384 118.3
D 8 176 621884 5253.45 404 384 118.3

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