ASTROSAT CZTI

Data Quality Report

Orbit 51054

Creation date: 2025-03-07T05:59:34.920667
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/AS1C07_001T02_9000006452_51054cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_51054cztM0_level2_quad_clean.evt
Size (bytes)1,132,090,560109,031,040
Size1.1 GB 104.0 MB
Events in quadrant A10,485,341709,826
Events in quadrant B5,420,693882,851
Events in quadrant C9,033,506761,503
Events in quadrant D16,281,616330,324

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0374512
B0224473
C0330022
D0545592

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8884132214.880684%
B88841892.127420%
C88846277.057632%
D8884522158.768573%

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 10253 8884 1258 1258 12.27% 14.16%
B 10253 8884 90 90 0.88% 1.01%
C 10253 8884 529 529 5.16% 5.95%
D 10253 8884 4628 4628 45.14% 52.09%

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 3 62 1875236 8519.0 894 871 220.0
A 10 253 1691760 7685.1 894 871 220.0
A 12 3 1182975 5372.67 894 871 220.0
B 4 81 264734 1312.06 932 901 201.1
B 5 185 258627 1281.69 932 901 201.1
B 4 171 196163 971.05 932 901 201.1
C 12 247 3619287 14602.8 898 890 247.8
C 12 249 262098 1054.16 898 890 247.8
C 1 44 250872 1008.85 898 890 247.8
D 8 176 12581647 82419.8 528 508 152.6
D 3 12 683588 4474.9 528 508 152.6
D 10 172 141097 921.01 528 508 152.6

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