ASTROSAT CZTI

Data Quality Report

Orbit 11562

Creation date: 2024-06-27T16:14:55.116777
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/AS1G08_009T01_9000001696_11562cztM0_level2.evt modeM0/AS1G08_009T01_9000001696_11562cztM0_level2_quad_clean.evt
Size (bytes)585,279,36073,172,160
Size558.2 MB 69.8 MB
Events in quadrant A5,363,522424,645
Events in quadrant B4,112,933453,731
Events in quadrant C3,134,575455,588
Events in quadrant D4,672,958426,938

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0203863
B0162942
C0135962
D0181352

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65095658.680289%
B65092233.426026%
C6509570.875711%
D65092824.332463%

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 7645 6511 274 274 3.58% 4.21%
B 7645 6511 92 92 1.20% 1.41%
C 7645 6511 1 1 0.01% 0.02%
D 7645 6511 238 238 3.11% 3.66%

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 8 5 1966817 12248.7 789 775 160.5
A 1 162 94215 582.14 789 775 160.5
A 1 178 65584 403.77 789 775 160.5
B 4 239 559558 3594.11 818 800 155.5
B 15 204 221755 1421.25 818 800 155.5
B 11 51 89481 570.42 818 800 155.5
C 9 54 30354 160.7 794 802 183.9
C 0 10 8764 43.3 794 802 183.9
C 13 61 5813 27.25 794 802 183.9
D 1 52 989578 5224.16 787 765 189.3
D 13 137 518615 2735.94 787 765 189.3
D 2 14 41095 213.07 787 765 189.3

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