ASTROSAT CZTI

Data Quality Report

Orbit 42681

Creation date: 2024-06-27T22:42:59.254230
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_013T01_9000005822_42681cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42681cztM0_level2_quad_clean.evt
Size (bytes)360,417,60095,676,480
Size343.7 MB 91.2 MB
Events in quadrant A3,301,134640,321
Events in quadrant B2,946,809647,936
Events in quadrant C2,825,809630,883
Events in quadrant D3,817,959574,308

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131262
B0126512
C0118052
D0152812

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5778550.951886%
B5778500.865351%
C577830.051921%
D57781602.769124%

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 7331 5779 36 36 0.49% 0.62%
B 7331 5779 45 45 0.61% 0.78%
C 7331 5779 1 1 0.01% 0.02%
D 7331 5779 143 143 1.95% 2.47%

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 617082 4755.51 634 621 129.6
A 13 248 192995 1484.01 634 621 129.6
A 7 3 15655 115.98 634 621 129.6
B 0 245 241943 1971.78 624 607 122.4
B 5 255 90109 731.26 624 607 122.4
B 4 141 55813 451.05 624 607 122.4
C 15 214 243968 1687.88 616 619 144.2
C 3 233 76972 529.59 616 619 144.2
C 8 79 76264 524.68 616 619 144.2
D 2 249 775081 5113.5 617 599 151.5
D 13 249 230651 1518.91 617 599 151.5
D 1 52 227325 1496.95 617 599 151.5

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