ASTROSAT CZTI

Data Quality Report

Orbit 48159

Creation date: 2024-08-24T10:59:16.681816
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/AS1C09_009T01_9000006406_48159cztM0_level2.fits modeM0/AS1C09_009T01_9000006406_48159cztM0_level2_quad_clean.evt
Size (bytes)234,020,16050,909,760
Size223.2 MB 48.6 MB
Events in quadrant A4,214,072437,069
Events in quadrant B659,36021,164
Events in quadrant C1,704,028428,023
Events in quadrant D1,791,588391,683

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150140
B040260
C077150
D079560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A37002316.243243%
B37003700100.000000%
C3700100.270270%
D3700160.432432%

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 3700 3700 58 58 1.57% 1.57%
B 3700 3689 0 0 0.00% 0.00%
C 3700 3700 7 7 0.19% 0.19%
D 3700 3700 13 13 0.35% 0.35%

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 2529631 29106.65 410 404 86.9
A 15 174 70487 806.52 410 404 86.9
A 0 243 11146 123.62 410 404 86.9
B 2 177 510410 70551.21 25 25 7.2
B 5 32 17348 2394.58 25 25 7.2
B 4 21 10603 1462.21 25 25 7.2
C 12 2 59758 597.73 413 415 99.3
C 0 207 18240 179.54 413 415 99.3
C 14 254 8398 80.41 413 415 99.3
D 7 67 50664 475.52 410 397 105.7
D 11 224 31550 294.71 410 397 105.7
D 11 192 29331 273.71 410 397 105.7

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