ASTROSAT CZTI

Data Quality Report

Orbit 06763

Creation date: 2024-06-27T15:11:24.908623
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/AS1A02_006T01_9000000934_06763cztM0_level2.evt modeM0/AS1A02_006T01_9000000934_06763cztM0_level2_quad_clean.evt
Size (bytes)1,433,502,720222,436,800
Size1.3 GB 212.1 MB
Events in quadrant A8,246,3721,404,019
Events in quadrant B8,519,6131,422,372
Events in quadrant C8,040,6391,390,227
Events in quadrant D17,364,6211,251,408

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0378005
B0380044
C0374384
D0642954

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03740
B03740
C03740
D03740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18408650.353107%
B184081100.597566%
C18408420.228162%
D1840815908.637549%

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 20508 18411 4 4 0.02% 0.02%
B 20508 18411 7 7 0.03% 0.04%
C 20508 18411 2 2 0.01% 0.01%
D 20508 18411 1118 1118 5.45% 6.07%

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 8 15 68577 155.68 2100 2051 427.3
A 13 248 51974 116.83 2100 2051 427.3
A 14 111 40860 90.82 2100 2051 427.3
B 4 48 104466 252.81 2130 2076 405.0
B 0 214 58649 139.69 2130 2076 405.0
B 0 187 47189 111.39 2130 2076 405.0
C 12 4 16855 31.21 2049 2056 474.1
C 13 61 16139 29.7 2049 2056 474.1
C 9 16 12339 21.69 2049 2056 474.1
D 12 220 6934813 14496.03 1961 1898 478.3
D 8 195 958493 2000.14 1961 1898 478.3
D 2 216 833931 1739.7 1961 1898 478.3

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