ASTROSAT CZTI

Data Quality Report

Orbit 01829

Creation date: 2024-06-27T14:12:58.199890
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/AS1G02_021T08_9000000302_01829cztM0_level2.evt modeM0/AS1G02_021T08_9000000302_01829cztM0_level2_quad_clean.evt
Size (bytes)1,213,130,88070,295,040
Size1.1 GB 67.0 MB
Events in quadrant A8,448,464412,832
Events in quadrant B11,651,858413,850
Events in quadrant C8,142,554412,380
Events in quadrant D8,036,571403,783

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B110
C1-1-1
D1-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300341
B0394949
C0291491
D0288451

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6967160.229654%
B69652733.919598%
C6967220.315774%
D6967200.287068%

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 7282 6968 277 277 3.80% 3.98%
B 7282 6967 1816 1816 24.94% 26.07%
C 7282 6968 232 232 3.19% 3.33%
D 7282 6968 302 302 4.15% 4.33%

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 2 9130 12.92 2205 2220 534.9
A 8 16 6500 8.0 2205 2220 534.9
A 0 5 5433 6.01 2205 2220 534.9
B 8 3 3035835 5645.75 2273 2282 537.3
B 4 48 7403 9.53 2273 2282 537.3
B 0 220 6684 8.19 2273 2282 537.3
D 7 85 192355 299.23 2036 2110 635.8
D 13 105 133831 207.18 2036 2110 635.8
D 14 3 71700 109.46 2036 2110 635.8

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