ASTROSAT CZTI

Data Quality Report

Orbit 31935

Creation date: 2024-06-27T20:34:33.564905
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/AS1C06_010T03_9000004658_31935cztM0_level2.evt modeM0/AS1C06_010T03_9000004658_31935cztM0_level2_quad_clean.evt
Size (bytes)616,115,52094,829,760
Size587.6 MB 90.4 MB
Events in quadrant A2,450,524682,237
Events in quadrant B4,856,943659,325
Events in quadrant C4,610,186617,734
Events in quadrant D6,404,596561,813

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105951
B0179801
C0172751
D0223419

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4986531.062976%
B49864228.463698%
C498659011.833133%
D4985145429.167503%

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 5741 4986 5 5 0.09% 0.10%
B 5741 4986 173 173 3.01% 3.47%
C 5741 4987 182 182 3.17% 3.65%
D 5740 4984 1257 1257 21.90% 25.22%

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 12 96 117893 977.69 602 590 120.0
A 13 254 9476 74.06 602 590 120.0
A 13 6 6685 50.8 602 590 120.0
B 6 159 1403740 12707.8 584 570 110.4
B 5 255 771122 6978.5 584 570 110.4
B 5 172 232584 2101.23 584 570 110.4
C 3 233 2016061 15572.85 557 560 129.4
C 0 10 264666 2040.63 557 560 129.4
C 14 238 104713 804.74 557 560 129.4
D 12 33 2289529 18242.34 523 508 125.5
D 13 249 1058172 8429.05 523 508 125.5
D 8 195 859760 6847.8 523 508 125.5

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