ASTROSAT CZTI

Data Quality Report

Orbit 39183

Creation date: 2024-06-27T22:01:28.647816
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_054T02_9000005444_39183cztM0_level2.fits modeM0/AS1A12_054T02_9000005444_39183cztM0_level2_quad_clean.evt
Size (bytes)455,371,20082,471,680
Size434.3 MB 78.7 MB
Events in quadrant A2,723,479610,929
Events in quadrant B2,437,729620,563
Events in quadrant C2,478,831580,863
Events in quadrant D8,807,782317,654

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0251
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01133090
B011035101
C01081098
D030323575

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A526360.114003%
B5265250.474834%
C524970.133359%
D5203230144.224486%

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 7082 5304 6 6 0.08% 0.11%
B 7082 5302 19 19 0.27% 0.36%
C 7082 5295 4 4 0.06% 0.08%
D 7082 5291 1928 1928 27.22% 36.44%

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 420449 3519.99 587 574 119.3
A 2 79 34173 281.67 587 574 119.3
A 13 254 7189 55.46 587 574 119.3
B 5 184 135325 1209.75 578 562 111.4
B 12 111 13961 120.28 578 562 111.4
B 11 111 12797 109.83 578 562 111.4
C 15 214 220375 1680.0 560 564 130.8
C 9 187 67802 513.9 560 564 130.8
C 0 10 4801 32.38 560 564 130.8
D 12 235 6143329 56155.27 453 440 109.4
D 2 249 802770 7334.51 453 440 109.4
D 5 222 32907 296.8 453 440 109.4

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