ASTROSAT CZTI

Data Quality Report

Orbit 24195

Creation date: 2024-06-27T19:03:19.423337
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/AS1A07_067T01_9000003578_24195cztM0_level2.evt modeM0/AS1A07_067T01_9000003578_24195cztM0_level2_quad_clean.evt
Size (bytes)880,931,520166,515,840
Size840.1 MB 158.8 MB
Events in quadrant A6,228,7371,044,921
Events in quadrant B6,279,6341,062,550
Events in quadrant C6,941,3001,015,927
Events in quadrant D6,341,8091,014,224

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02680
B02680
C02680
D02680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270173
B0270323
C0288033
D0275363

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A131051531.167493%
B131061631.243705%
C131063132.388219%
D131061200.915611%

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 14765 13107 17 17 0.12% 0.13%
B 14766 13106 3 3 0.02% 0.02%
C 14766 13106 72 72 0.49% 0.55%
D 14766 13109 4 4 0.03% 0.03%

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 6 16 60131 182.38 1595 1561 321.1
A 13 254 20699 59.59 1595 1561 321.1
A 3 1 20278 58.28 1595 1561 321.1
B 12 111 37625 117.98 1588 1541 305.8
B 11 111 33353 104.01 1588 1541 305.8
B 14 111 28652 88.64 1588 1541 305.8
C 7 247 368446 1039.51 1521 1529 353.0
C 2 16 305210 860.35 1521 1529 353.0
C 14 238 243305 684.97 1521 1529 353.0
D 8 195 243256 642.62 1556 1512 376.2
D 7 238 152532 401.45 1556 1512 376.2
D 2 234 57422 148.62 1556 1512 376.2

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