ASTROSAT CZTI

Data Quality Report

Orbit 37362

Creation date: 2024-06-27T21:39:00.928639
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_094T20_9000005316_37362cztM0_level2.evt modeM0/AS1A10_094T20_9000005316_37362cztM0_level2_quad_clean.evt
Size (bytes)537,612,48099,527,040
Size512.7 MB 94.9 MB
Events in quadrant A2,597,291682,144
Events in quadrant B3,910,219648,192
Events in quadrant C3,928,546698,102
Events in quadrant D5,513,438640,677

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105913
B0146952
C0146092
D0198432

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4920160.325203%
B492061112.418699%
C49202354.776423%
D49204348.821138%

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 7043 4921 7 7 0.10% 0.14%
B 7043 4921 458 458 6.50% 9.31%
C 7043 4921 277 277 3.93% 5.63%
D 7043 4921 439 439 6.23% 8.92%

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 10 83 266181 2248.74 588 576 118.1
A 9 143 38850 324.05 588 576 118.1
A 13 6 11182 89.8 588 576 118.1
B 5 255 1382538 13450.22 543 528 102.7
B 5 172 288036 2798.13 543 528 102.7
B 15 85 27218 259.75 543 528 102.7
C 15 208 1236570 9260.66 582 586 133.5
C 15 214 210552 1573.18 582 586 133.5
C 0 10 162420 1212.55 582 586 133.5
D 12 235 2727692 19597.42 574 558 139.2
D 10 253 300651 2156.49 574 558 139.2
D 1 47 48446 344.13 574 558 139.2

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