ASTROSAT CZTI

Data Quality Report

Orbit 39339

Creation date: 2024-06-27T22:03:25.312726
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_018T01_9000005470_39339cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39339cztM0_level2_quad_clean.evt
Size (bytes)1,184,647,680251,475,840
Size1.1 GB 239.8 MB
Events in quadrant A7,911,1471,724,655
Events in quadrant B7,040,2211,762,774
Events in quadrant C7,772,2861,665,018
Events in quadrant D19,922,3531,385,589

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0332864
B0320663
C0327383
D0702193

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15600390.250000%
B15600320.205128%
C15600340.217949%
D15600229114.685897%

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 19749 15603 19 19 0.10% 0.12%
B 19749 15603 6 6 0.03% 0.04%
C 19749 15603 31 31 0.16% 0.20%
D 19749 15603 2073 2073 10.50% 13.29%

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 1067522 3094.17 1714 1680 344.5
A 13 248 158937 456.52 1714 1680 344.5
A 15 223 28761 78.62 1714 1680 344.5
B 5 184 254941 778.26 1706 1658 325.4
B 12 111 42287 124.84 1706 1658 325.4
B 11 111 38974 114.66 1706 1658 325.4
C 15 214 694915 1777.86 1676 1685 389.9
C 14 254 321951 821.36 1676 1685 389.9
C 9 187 104268 263.08 1676 1685 389.9
D 12 235 11042265 28248.18 1594 1545 390.8
D 2 249 749281 1913.12 1594 1545 390.8
D 12 227 704758 1799.2 1594 1545 390.8

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