ASTROSAT CZTI

Data Quality Report

Orbit 46979

Creation date: 2024-06-27T23:30:13.525781
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/AS1A13_071T08_9000006292_46979cztM0_level2.fits modeM0/AS1A13_071T08_9000006292_46979cztM0_level2_quad_clean.evt
Size (bytes)605,871,360106,234,560
Size577.8 MB 101.3 MB
Events in quadrant A6,676,063711,125
Events in quadrant B6,153,756718,955
Events in quadrant C3,283,582718,770
Events in quadrant D5,793,883599,157

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242502
B0230982
C0145902
D0219022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67212563.808957%
B67214877.245946%
C6721971.443238%
D672176911.441750%

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 7706 6722 33 33 0.43% 0.49%
B 7706 6722 232 232 3.01% 3.45%
C 7706 6722 41 41 0.53% 0.61%
D 7706 6722 603 603 7.83% 8.97%

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 3679383 23964.7 744 728 153.5
A 14 248 53431 343.34 744 728 153.5
A 9 191 28153 178.66 744 728 153.5
B 3 112 2163681 14845.66 736 711 145.7
B 15 201 941456 6456.86 736 711 145.7
B 0 200 84637 576.03 736 711 145.7
C 14 254 220388 1248.86 747 747 175.9
C 12 2 127919 723.09 747 747 175.9
C 3 233 19311 105.55 747 747 175.9
D 13 171 1162911 6463.58 718 698 179.8
D 13 249 1155801 6424.04 718 698 179.8
D 1 52 357929 1986.72 718 698 179.8

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