ASTROSAT CZTI

Data Quality Report

Orbit 35343

Creation date: 2022-04-12T06:00:35.024511
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_093T01_9000005064_35343cztM0_level2.evt modeM0/AS1A11_093T01_9000005064_35343cztM0_level2_quad_clean.evt
Size (bytes)1,041,206,400206,199,360
Size993.0 MB 196.6 MB
Events in quadrant A5,899,9131,351,623
Events in quadrant B9,436,0941,322,826
Events in quadrant C7,213,2801,401,619
Events in quadrant D8,127,4731,292,946

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261784
B0364893
C0294143
D0326793

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02580
B02580
C02580
D02580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12677470.370750%
B1267711529.087323%
C126771831.443559%
D126774883.849491%

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 17004 12680 22 22 0.13% 0.17%
B 17004 12679 985 985 5.79% 7.77%
C 17004 12679 130 130 0.76% 1.03%
D 17004 12679 410 410 2.41% 3.23%

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 189471 651.15 1434 1406 288.8
A 8 192 54121 182.52 1434 1406 288.8
A 9 143 49847 167.72 1434 1406 288.8
B 5 172 1967287 7399.22 1387 1349 265.7
B 5 236 1871319 7038.03 1387 1349 265.7
B 4 232 78717 291.19 1387 1349 265.7
C 0 10 533800 1646.3 1405 1420 323.4
C 15 214 513803 1584.46 1405 1420 323.4
C 4 254 457308 1409.76 1405 1420 323.4
D 7 80 688644 2077.96 1370 1331 330.8
D 8 195 657259 1983.07 1370 1331 330.8
D 13 249 502787 1516.05 1370 1331 330.8

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