ASTROSAT CZTI

Data Quality Report

Orbit 45001

Creation date: 2024-06-27T23:08:55.256916
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/AS1A13_020T01_9000006040_45001cztM0_level2.fits modeM0/AS1A13_020T01_9000006040_45001cztM0_level2_quad_clean.evt
Size (bytes)586,900,800122,690,880
Size559.7 MB 117.0 MB
Events in quadrant A6,662,612817,664
Events in quadrant B4,564,067832,651
Events in quadrant C3,464,146821,057
Events in quadrant D6,435,988706,374

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254180
B0188460
C0159470
D0244570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77212242.901179%
B77222393.095053%
C7722140.181300%
D77226027.795908%

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 7721 7721 86 86 1.11% 1.11%
B 7722 7722 116 116 1.50% 1.50%
C 7722 7722 7 7 0.09% 0.09%
D 7722 7722 501 501 6.49% 6.49%

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 10 83 2704110 14840.4 862 842 182.2
A 2 79 418935 2295.25 862 842 182.2
A 13 248 95819 521.4 862 842 182.2
B 4 171 232409 1370.48 862 837 169.0
B 0 189 230181 1357.29 862 837 169.0
B 5 172 188548 1110.9 862 837 169.0
C 14 254 39410 191.82 852 858 201.0
C 3 233 29465 142.34 852 858 201.0
C 15 208 22738 108.87 852 858 201.0
D 13 249 982661 4749.73 823 795 206.7
D 4 232 432850 2090.05 823 795 206.7
D 11 241 374865 1809.55 823 795 206.7

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