ASTROSAT CZTI

Data Quality Report

Orbit 08237

Creation date: 2024-06-27T15:30:00.612181
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/AS1T01_164T01_9000001140_08237cztM0_level2.evt modeM0/AS1T01_164T01_9000001140_08237cztM0_level2_quad_clean.evt
Size (bytes)143,242,56011,787,840
Size136.6 MB 11.2 MB
Events in quadrant A1,076,86055,078
Events in quadrant B1,096,86556,096
Events in quadrant C957,16557,601
Events in quadrant D1,081,54754,723

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A042772
B043591
C040001
D043951

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1812945.187638%
B18121136.236203%
C1812563.090508%
D1812784.304636%

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 2917 1812 2 2 0.07% 0.11%
B 2917 1812 6 6 0.21% 0.33%
C 2917 1812 0 0 0.00% 0.00%
D 2917 1813 9 9 0.31% 0.50%

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 78917 1437.11 255 249 54.7
A 0 254 8826 156.68 255 249 54.7
A 0 226 2615 43.22 255 249 54.7
B 11 51 53206 1019.0 254 248 52.0
B 10 16 41892 801.3 254 248 52.0
B 0 214 7246 134.65 254 248 52.0
C 13 61 1865 27.31 245 245 59.3
C 3 202 589 5.8 245 245 59.3
C -1 -1 -1 -1.0 245 245 59.3
D 1 52 120870 1907.97 249 241 63.2
D 13 105 7959 122.07 249 241 63.2
D 2 234 6657 101.48 249 241 63.2

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