ASTROSAT CZTI

Data Quality Report

Orbit 42189

Creation date: 2024-06-27T22:38:18.464984
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_088T25_9000005770_42189cztM0_level2.fits modeM0/AS1A12_088T25_9000005770_42189cztM0_level2_quad_clean.evt
Size (bytes)54,348,48014,883,840
Size51.8 MB 14.2 MB
Events in quadrant A542,49397,435
Events in quadrant B428,88199,646
Events in quadrant C417,37595,469
Events in quadrant D547,44986,517

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021821
B019331
C018611
D023291

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A92940.430571%
B92910.107643%
C92910.107643%
D929222.368138%

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 2332 930 2 2 0.09% 0.22%
B 2332 930 0 0 0.00% 0.00%
C 2332 930 0 0 0.00% 0.00%
D 2332 930 24 24 1.03% 2.58%

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 160208 7340.76 96 94 21.8
A 2 247 2825 125.21 96 94 21.8
A 13 6 2796 123.88 96 94 21.8
B 5 255 35179 1653.02 97 95 21.2
B 0 229 6612 307.06 97 95 21.2
B 12 111 2553 115.81 97 95 21.2
C 15 214 43915 1811.16 95 95 24.2
C 0 207 925 34.31 95 95 24.2
C 13 61 644 22.69 95 95 24.2
D 12 6 86034 3440.85 92 88 25.0
D 1 52 59263 2369.07 92 88 25.0
D 1 47 23920 954.11 92 88 25.0

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