ASTROSAT CZTI

Data Quality Report

Orbit 23935

Creation date: 2024-06-27T19:00:33.349841
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/AS1C05_002T07_9000003542_23935cztM0_level2.evt modeM0/AS1C05_002T07_9000003542_23935cztM0_level2_quad_clean.evt
Size (bytes)662,169,60092,347,200
Size631.5 MB 88.1 MB
Events in quadrant A4,007,655565,550
Events in quadrant B4,147,609576,691
Events in quadrant C4,179,909552,332
Events in quadrant D7,130,707499,609

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175211
B0177881
C0180171
D0272481

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8669500.576768%
B8669680.784404%
C86691221.407313%
D8669110512.746568%

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 9269 8670 0 0 0.00% 0.00%
B 9269 8670 4 4 0.04% 0.05%
C 9269 8670 19 19 0.20% 0.22%
D 9269 8669 519 519 5.60% 5.99%

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 13 254 11894 51.95 1037 1017 209.4
A 3 137 9608 41.03 1037 1017 209.4
A 0 226 8884 37.58 1037 1017 209.4
B 0 190 35947 177.09 1029 1002 197.3
B 12 111 24261 117.87 1029 1002 197.3
B 3 64 22980 111.38 1029 1002 197.3
C 14 238 156586 675.84 985 990 230.2
C 3 233 136462 588.43 985 990 230.2
C 0 10 33837 142.67 985 990 230.2
D 12 218 1572575 6972.78 923 896 225.4
D 8 195 1090203 4832.73 923 896 225.4
D 1 52 365875 1619.24 923 896 225.4

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