ASTROSAT CZTI

Data Quality Report

Orbit 20181007_A05_069T03_9000002416_level2

Creation date: 2025-11-25T02:36:41.177723
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/AS1A05_069T03_9000002416cztM0_level2.fits modeM0/AS1A05_069T03_9000002416cztM0_level2_quad_clean.evt
Size (bytes)446,947,200468,993,600
Size426.2 MB 447.3 MB
Events in quadrant A2,677,5922,794,466
Events in quadrant B2,628,4182,917,385
Events in quadrant C2,659,1682,750,699
Events in quadrant D2,320,6622,493,079

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140270
B01043450
C01023530
D01075070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09680
B09680
C09680
D09680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4732326895.682226%
B4732310872.296980%
C473239782.066648%
D4732313442.840057%

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 51877 47305 0 0 0.00% 0.00%
B 51877 47318 0 0 0.00% 0.00%
C 51877 47321 0 0 0.00% 0.00%
D 51877 47309 0 0 0.00% 0.00%

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 0 29 2620 11.4 695 650 172.8
A 7 110 2135 8.6 695 650 172.8
A 15 236 2011 7.88 695 650 172.8
B 2 9 2181 10.8 695 661 140.7
B 2 8 1830 8.31 695 661 140.7
B 5 128 1748 7.72 695 661 140.7
C 1 81 2006 7.4 701 652 183.0
C 1 80 1988 7.3 701 652 183.0
C 3 126 1813 6.35 701 652 183.0
D 6 67 1685 6.12 661 600 177.3
D 3 14 1662 5.99 661 600 177.3
D 1 3 1655 5.95 661 600 177.3

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