ASTROSAT CZTI

Data Quality Report

Orbit 36985

Creation date: 2024-06-27T21:33:53.162943
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/AS1A11_079T01_9000005254_36985cztM0_level2.evt modeM0/AS1A11_079T01_9000005254_36985cztM0_level2_quad_clean.evt
Size (bytes)1,111,752,000216,982,080
Size1.0 GB 206.9 MB
Events in quadrant A6,682,7501,459,537
Events in quadrant B11,481,0251,375,072
Events in quadrant C7,143,8881,469,394
Events in quadrant D7,497,5291,382,561

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0275714
B0427913
C0287975
D0306513

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12809260.202982%
B12809147011.476306%
C12808870.679263%
D128093462.701226%

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 18907 12812 7 7 0.04% 0.05%
B 18907 12812 1011 1011 5.35% 7.89%
C 18907 12812 73 73 0.39% 0.57%
D 18907 12812 336 336 1.78% 2.62%

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 426689 1381.94 1566 1542 307.6
A 15 222 102673 328.73 1566 1542 307.6
A 9 143 79545 253.55 1566 1542 307.6
B 5 184 5011187 18181.74 1486 1448 275.5
B 0 221 196077 706.36 1486 1448 275.5
B 5 172 147725 530.88 1486 1448 275.5
C 15 214 541682 1529.37 1542 1561 353.2
C 0 10 248744 699.91 1542 1561 353.2
C 0 207 136214 381.28 1542 1561 353.2
D 2 250 666760 1818.99 1526 1493 365.7
D 12 17 390130 1062.62 1526 1493 365.7
D 13 249 228309 620.16 1526 1493 365.7

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