ASTROSAT CZTI

Data Quality Report

Orbit 33244

Creation date: 2024-06-27T20:46:31.927966
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/AS1A10_067T01_9000004774_33244cztM0_level2.evt modeM0/AS1A10_067T01_9000004774_33244cztM0_level2_quad_clean.evt
Size (bytes)2,154,142,080168,854,400
Size2.0 GB 161.0 MB
Events in quadrant A27,623,511807,350
Events in quadrant B8,419,1921,189,521
Events in quadrant C7,037,6991,183,664
Events in quadrant D21,229,705971,617

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02840
B02840
C02840
D02840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0914533
B0345273
C0302973
D0729343

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13854981070.809874%
B138545463.941100%
C138541701.227082%
D13854372726.901978%

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 16480 13855 7890 7890 47.88% 56.95%
B 16480 13856 342 342 2.08% 2.47%
C 16480 13856 137 137 0.83% 0.99%
D 16479 13855 3106 3106 18.85% 22.42%

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 15 169 23520801 112211.36 1054 1035 209.6
A 13 6 22684 103.28 1054 1035 209.6
A 13 254 16103 71.89 1054 1035 209.6
B 5 172 1474599 4934.08 1567 1525 298.6
B 4 170 210273 699.2 1567 1525 298.6
B 5 200 145276 481.5 1567 1525 298.6
C 1 23 363721 1017.55 1544 1559 355.9
C 9 187 189859 529.06 1544 1559 355.9
C 0 10 185097 515.68 1544 1559 355.9
D 12 3 6991046 20161.41 1394 1352 346.7
D 8 195 5313693 15323.17 1394 1352 346.7
D 2 250 761328 2192.11 1394 1352 346.7

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