ASTROSAT CZTI

Data Quality Report

Orbit 41429

Creation date: 2024-06-27T22:28:53.677576
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_035T01_9000005666_41429cztM0_level2.fits modeM0/AS1A12_035T01_9000005666_41429cztM0_level2_quad_clean.evt
Size (bytes)358,257,60090,031,680
Size341.7 MB 85.9 MB
Events in quadrant A2,904,058626,188
Events in quadrant B2,759,347638,955
Events in quadrant C3,159,772571,453
Events in quadrant D4,036,227527,632

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117143
B0116602
C0125122
D0154882

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5166240.464576%
B5166420.813008%
C51662384.607046%
D51663667.084785%

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 7050 5167 4 4 0.06% 0.08%
B 7050 5167 22 22 0.31% 0.43%
C 7050 5167 223 223 3.16% 4.32%
D 7050 5167 310 310 4.40% 6.00%

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 511768 4131.07 603 591 123.7
A 13 248 39626 315.46 603 591 123.7
A 2 79 12746 98.23 603 591 123.7
B 5 255 214973 1866.46 599 583 114.9
B 0 190 125550 1087.95 599 583 114.9
B 5 252 33085 282.96 599 583 114.9
C 0 10 600716 4574.79 569 573 131.2
C 15 214 212219 1613.34 569 573 131.2
C 15 111 121606 922.61 569 573 131.2
D 13 249 804107 5821.72 568 554 138.0
D 1 52 267891 1936.85 568 554 138.0
D 12 79 254973 1843.26 568 554 138.0

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