ASTROSAT CZTI

Data Quality Report

Orbit 48161

Creation date: 2024-08-24T15:11:51.361731
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/AS1C09_004T05_9000006408_48161cztM0_level2.fits modeM0/AS1C09_004T05_9000006408_48161cztM0_level2_quad_clean.evt
Size (bytes)480,767,04099,054,720
Size458.5 MB 94.5 MB
Events in quadrant A8,200,537839,202
Events in quadrant B1,380,188118
Events in quadrant C3,734,287833,203
Events in quadrant D3,851,295770,887

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0293671
B084931
C0171671
D0173851

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79922743.428428%
B7992799199.987487%
C7993720.900788%
D7993901.125985%

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 8402 7994 23 23 0.27% 0.29%
B 8401 7956 0 0 0.00% 0.00%
C 8403 7995 36 36 0.43% 0.45%
D 8403 7995 60 60 0.71% 0.75%

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 4740811 26543.83 862 840 178.6
A 13 248 85358 473.3 862 840 178.6
A 0 243 26259 142.35 862 840 178.6
B 2 177 1102344 80710.85 58 57 13.7
B 4 21 21962 1603.91 58 57 13.7
B 4 171 8255 600.27 58 57 13.7
C 12 2 323068 1588.05 862 864 202.9
C 14 254 32969 158.24 862 864 202.9
C 12 249 8436 37.32 862 864 202.9
D 7 67 93904 433.35 859 831 214.8
D 5 222 81222 374.3 859 831 214.8
D 12 2 71991 331.32 859 831 214.8

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