ASTROSAT CZTI

Data Quality Report

Orbit 47055

Creation date: 2024-06-27T23:31:11.949995
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_005T01_9000006296_47055cztM0_level2.fits modeM0/AS1C09_005T01_9000006296_47055cztM0_level2_quad_clean.evt
Size (bytes)473,947,200111,775,680
Size452.0 MB 106.6 MB
Events in quadrant A6,396,724739,535
Events in quadrant B4,082,679762,286
Events in quadrant C2,968,450746,697
Events in quadrant D3,588,545679,724

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233595
B0163081
C0135401
D0151151

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65402443.730887%
B65402183.333333%
C6541661.009020%
D65411502.293227%

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 7640 6541 8 8 0.10% 0.12%
B 7640 6541 56 56 0.73% 0.86%
C 7641 6542 6 6 0.08% 0.09%
D 7641 6542 45 45 0.59% 0.69%

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 3384980 22067.88 748 732 153.4
A 13 248 75776 489.34 748 732 153.4
A 9 191 29503 187.61 748 732 153.4
B 3 112 563531 3948.6 737 715 142.5
B 5 172 275847 1930.27 737 715 142.5
B 5 32 148492 1036.77 737 715 142.5
C 14 254 35362 201.48 740 743 171.8
C 12 250 27640 156.54 740 743 171.8
C 12 2 11212 60.93 740 743 171.8
D 1 52 367362 2006.3 745 724 182.7
D 13 249 106105 576.66 745 724 182.7
D 13 171 40369 216.94 745 724 182.7

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