ASTROSAT CZTI

Data Quality Report

Orbit 47821

Creation date: 2024-08-01T10:25:50.865769
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/AS1A13_081T01_9000006354_47821cztM0_level2.fits modeM0/AS1A13_081T01_9000006354_47821cztM0_level2_quad_clean.evt
Size (bytes)592,600,320104,051,520
Size565.1 MB 99.2 MB
Events in quadrant A6,787,949720,395
Events in quadrant B3,448,614747,729
Events in quadrant C2,806,314718,097
Events in quadrant D8,378,316500,992

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0245122
B0150832
C0135522
D0296022

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66402253.388554%
B6641691.039000%
C6641140.210812%
D6641189928.595091%

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 8815 6642 94 94 1.07% 1.42%
B 8816 6642 21 21 0.24% 0.32%
C 8816 6643 3 3 0.03% 0.05%
D 8816 6641 1715 1715 19.45% 25.82%

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 3941789 26827.75 710 697 146.9
A 0 31 50443 338.63 710 697 146.9
A 13 248 37262 248.9 710 697 146.9
B 0 200 407609 2947.04 713 690 138.1
B 5 32 91105 654.82 713 690 138.1
B 0 186 39079 278.03 713 690 138.1
C 14 254 19753 115.5 705 707 164.9
C 1 3 17120 99.53 705 707 164.9
C 12 2 14209 81.88 705 707 164.9
D 12 3 3814271 25377.0 603 582 150.3
D 12 2 1271638 8457.84 603 582 150.3
D 2 249 751498 4996.74 603 582 150.3

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