ASTROSAT CZTI

Data Quality Report

Orbit 34947

Creation date: 2022-03-16T10:03:42.072550
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/AS1A11_047T09_9000005010_34947cztM0_level2.evt modeM0/AS1A11_047T09_9000005010_34947cztM0_level2_quad_clean.evt
Size (bytes)548,026,56057,176,640
Size522.6 MB 54.5 MB
Events in quadrant A4,717,325320,539
Events in quadrant B4,312,138336,215
Events in quadrant C2,897,793350,394
Events in quadrant D4,284,198325,723

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176163
B0165952
C0119552
D0164712

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A568692016.180091%
B568658810.341189%
C5686490.861766%
D56862384.185719%

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 9242 5688 737 737 7.97% 12.96%
B 9242 5688 465 465 5.03% 8.18%
C 9242 5688 40 40 0.43% 0.70%
D 9242 5688 199 199 2.15% 3.50%

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 2317524 19575.98 586 574 118.4
A 10 83 60977 510.34 586 574 118.4
A 7 16 50222 419.47 586 574 118.4
B 5 172 1363991 11335.77 623 608 120.3
B 0 190 169320 1402.75 623 608 120.3
B 4 232 122851 1016.38 623 608 120.3
C 15 214 240669 1608.31 637 643 149.2
C 0 10 136719 911.78 637 643 149.2
C 0 207 18780 121.52 637 643 149.2
D 8 195 730054 4734.45 629 614 154.1
D 13 249 360196 2333.88 629 614 154.1
D 2 249 274881 1780.14 629 614 154.1

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