ASTROSAT CZTI

Data Quality Report

Orbit 18073

Creation date: 2024-06-27T17:44:42.681300
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/AS1A06_006T01_9000002684_18073cztM0_level2.evt modeM0/AS1A06_006T01_9000002684_18073cztM0_level2_quad_clean.evt
Size (bytes)741,473,28064,082,880
Size707.1 MB 61.1 MB
Events in quadrant A7,833,015331,231
Events in quadrant B3,202,886411,841
Events in quadrant C3,201,233398,994
Events in quadrant D7,775,166340,229

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0275711
B0135381
C0136481
D0275871

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6550273141.694656%
B6551610.931156%
C6551871.328042%
D6551141121.538696%

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 7500 6550 545 545 7.27% 8.32%
B 7501 6551 2 2 0.03% 0.03%
C 7501 6551 0 0 0.00% 0.00%
D 7501 6551 1140 1140 15.20% 17.40%

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 14 111 4208124 29851.4 700 685 140.9
A 15 174 883138 6260.92 700 685 140.9
A 4 2 53886 377.45 700 685 140.9
B 0 189 52788 342.69 793 771 151.8
B 3 64 18934 119.66 793 771 151.8
B 12 111 18362 115.89 793 771 151.8
C 14 238 117661 650.45 764 768 179.7
C 3 233 93441 515.68 764 768 179.7
C 5 218 6414 31.42 764 768 179.7
D 5 222 4510263 26010.53 711 689 173.4
D 1 52 243352 1399.64 711 689 173.4
D 7 238 209821 1206.24 711 689 173.4

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