ASTROSAT CZTI

Data Quality Report

Orbit 27727

Creation date: 2024-06-27T19:43:35.424362
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/AS1T03_263T01_9000003990_27727cztM0_level2.evt modeM0/AS1T03_263T01_9000003990_27727cztM0_level2_quad_clean.evt
Size (bytes)1,040,952,960183,651,840
Size992.7 MB 175.1 MB
Events in quadrant A7,922,9661,204,337
Events in quadrant B7,642,9401,202,224
Events in quadrant C7,346,0091,161,987
Events in quadrant D7,744,7911,104,562

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320450
B0301740
C0296540
D0312600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A128551721.338001%
B128564353.383634%
C128562461.913503%
D128562702.100187%

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 13970 12855 1 1 0.01% 0.01%
B 13971 12856 179 179 1.28% 1.39%
C 13971 12856 10 10 0.07% 0.08%
D 13971 12856 145 145 1.04% 1.13%

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 16 1484679 4203.07 1663 1635 352.8
A 13 254 20289 52.87 1663 1635 352.8
A 0 13 19145 49.62 1663 1635 352.8
B 3 64 1033407 3121.18 1645 1607 330.6
B 15 32 40014 116.18 1645 1607 330.6
B 12 111 37406 108.29 1645 1607 330.6
C 3 233 852525 2174.59 1594 1605 391.3
C 14 238 257234 653.28 1594 1605 391.3
C 15 208 36200 88.41 1594 1605 391.3
D 1 52 1011300 2534.07 1599 1557 398.5
D 11 176 424062 1060.33 1599 1557 398.5
D 2 250 202753 504.93 1599 1557 398.5

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