ASTROSAT CZTI

Data Quality Report

Orbit 40923

Creation date: 2024-06-27T22:22:17.264827
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_052T04_9000005582_40923cztM0_level2.fits modeM0/AS1A12_052T04_9000005582_40923cztM0_level2_quad_clean.evt
Size (bytes)122,760,00034,922,880
Size117.1 MB 33.3 MB
Events in quadrant A1,113,567240,073
Events in quadrant B928,064243,817
Events in quadrant C1,036,132226,187
Events in quadrant D1,316,499209,566

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A044532
B039451
C041251
D051481

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1894100.527983%
B189480.422386%
C1894311.636748%
D1894733.854277%

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 3896 1895 5 5 0.13% 0.26%
B 3896 1895 3 3 0.08% 0.16%
C 3896 1895 30 30 0.77% 1.58%
D 3896 1895 56 56 1.44% 2.96%

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 213855 4500.21 227 223 47.5
A 9 254 14720 305.38 227 223 47.5
A 13 254 2830 54.92 227 223 47.5
B 5 255 35338 789.41 225 220 44.5
B 12 111 5187 111.65 225 220 44.5
B 11 111 4775 102.39 225 220 44.5
C 0 10 95256 1831.51 218 220 51.9
C 15 214 81834 1572.85 218 220 51.9
C 0 239 5102 94.08 218 220 51.9
D 1 47 155375 2859.47 218 212 54.3
D 2 249 82987 1525.44 218 212 54.3
D 12 233 77783 1429.54 218 212 54.3

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