ASTROSAT CZTI

Data Quality Report

Orbit 47464

Creation date: 2024-07-08T07:11:25.899504
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_089T01_9000006330_47464cztM0_level2.fits modeM0/AS1A13_089T01_9000006330_47464cztM0_level2_quad_clean.evt
Size (bytes)875,687,040101,643,840
Size835.1 MB 96.9 MB
Events in quadrant A8,020,214763,475
Events in quadrant B4,598,219794,533
Events in quadrant C3,625,432793,736
Events in quadrant D15,585,515199,976

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0291322
B0188442
C0161802
D0514872

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75584465.901032%
B75584415.834877%
C7558660.873247%
D7557565374.804817%

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 7793 7561 68 68 0.87% 0.90%
B 7793 7561 192 192 2.46% 2.54%
C 7793 7561 3 3 0.04% 0.04%
D 7791 7558 4915 4915 63.09% 65.03%

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 4175661 23544.59 849 827 177.3
A 9 191 540217 3041.97 849 827 177.3
A 2 79 20685 111.99 849 827 177.3
B 5 32 979765 5737.35 853 825 170.6
B 0 198 108465 630.85 853 825 170.6
B 0 190 76594 444.07 853 825 170.6
C 3 233 211279 1032.27 855 858 203.8
C 0 207 52261 252.17 855 858 203.8
C 12 2 11511 52.26 855 858 203.8
D 2 165 13440393 101761.38 518 500 132.1
D 2 249 48223 361.34 518 500 132.1
D 2 234 24570 182.25 518 500 132.1

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