ASTROSAT CZTI

Data Quality Report

Orbit 08977

Creation date: 2024-06-27T15:39:50.547260
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/AS1A03_107T01_9000001246_08977cztM0_level2.evt modeM0/AS1A03_107T01_9000001246_08977cztM0_level2_quad_clean.evt
Size (bytes)926,602,56082,615,680
Size883.7 MB 78.8 MB
Events in quadrant A5,274,804528,880
Events in quadrant B13,955,311426,967
Events in quadrant C3,608,468525,936
Events in quadrant D4,716,186496,014

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0207039
B0466172
C0159582
D01912811

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75046088.102345%
B7506455860.724754%
C75061171.558753%
D75034165.544449%

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 8956 7508 308 308 3.44% 4.10%
B 8956 7507 3469 3469 38.73% 46.21%
C 8956 7508 11 11 0.12% 0.15%
D 8956 7508 261 261 2.91% 3.48%

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 5 16 961451 5173.42 900 879 185.7
A 13 251 431752 2320.58 900 879 185.7
A 8 5 370586 1991.16 900 879 185.7
B 0 85 10940504 75273.09 756 737 145.3
B 0 214 32477 218.39 756 737 145.3
B 4 173 29013 194.56 756 737 145.3
C 4 254 123044 586.75 892 897 208.2
C 13 61 6720 27.97 892 897 208.2
C 14 238 4128 15.52 892 897 208.2
D 1 52 872170 3724.28 871 854 234.0
D 7 71 216247 920.66 871 854 234.0
D 7 55 60858 256.48 871 854 234.0

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