ASTROSAT CZTI

Data Quality Report

Orbit 40727

Creation date: 2024-06-27T22:19:40.206841
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/AS1A12_042T01_9000005560_40727cztM0_level2.fits modeM0/AS1A12_042T01_9000005560_40727cztM0_level2_quad_clean.evt
Size (bytes)291,654,72049,184,640
Size278.1 MB 46.9 MB
Events in quadrant A1,738,865361,933
Events in quadrant B1,868,168367,681
Events in quadrant C4,663,259288,951
Events in quadrant D2,265,316234,552

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A071054
B077971
C0161858
D089841

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A332250.150512%
B3324401.203369%
C332280524.232390%
D3324103531.137184%

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 3324 3323 2 2 0.06% 0.06%
B 3324 3324 28 28 0.84% 0.84%
C 3324 3323 741 741 22.29% 22.30%
D 3324 3324 117 117 3.52% 3.52%

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 307925 4103.82 358 350 74.9
A 6 10 16527 215.84 358 350 74.9
A 13 248 16017 209.04 358 350 74.9
B 4 170 201678 2918.87 354 345 69.0
B 15 85 94971 1371.86 354 345 69.0
B 0 229 63863 920.87 354 345 69.0
C 9 187 3229512 42376.23 324 324 76.2
C 15 214 135115 1768.85 324 324 76.2
C 5 10 18963 244.6 324 324 76.2
D 13 249 294981 3876.16 304 295 76.0
D 12 191 175736 2307.67 304 295 76.0
D 1 47 129141 1694.78 304 295 76.0

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