ASTROSAT CZTI

Data Quality Report

Orbit 18800

Creation date: 2024-06-27T17:54:50.384072
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_024T01_9000002810_18800cztM0_level2.evt modeM0/AS1A05_024T01_9000002810_18800cztM0_level2_quad_clean.evt
Size (bytes)472,106,88084,504,960
Size450.2 MB 80.6 MB
Events in quadrant A2,982,298543,646
Events in quadrant B3,045,229556,075
Events in quadrant C3,390,778531,943
Events in quadrant D4,478,639514,815

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01222
C01222
D01213

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01253275
B01270570
C01392997
D01718175

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5902601.016605%
B5913641.082361%
C59071081.828339%
D59114507.612925%

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 7094 5915 4 4 0.06% 0.07%
B 7093 5919 1 1 0.01% 0.02%
C 7093 5917 5 5 0.07% 0.08%
D 7093 5918 292 292 4.12% 4.93%

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 15961 99.6 768 752 152.7
A 13 254 9709 58.66 768 752 152.7
A 11 29 7577 44.7 768 752 152.7
B 6 36 22676 152.93 762 744 143.4
B 0 230 17440 116.42 762 744 143.4
B 12 111 16690 111.19 762 744 143.4
C 3 233 325683 1880.8 747 754 172.8
C 14 238 116495 669.95 747 754 172.8
C 9 54 38193 216.71 747 754 172.8
D 5 222 1367979 7771.02 734 714 175.9
D 9 68 215940 1223.26 734 714 175.9
D 1 52 69968 393.61 734 714 175.9

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