ASTROSAT CZTI

Data Quality Report

Orbit 36734

Creation date: 2024-06-27T21:30:56.902137
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/AS1A11_101T01_9000005238_36734cztM0_level2.evt modeM0/AS1A11_101T01_9000005238_36734cztM0_level2_quad_clean.evt
Size (bytes)441,311,04082,823,040
Size420.9 MB 79.0 MB
Events in quadrant A2,748,115540,200
Events in quadrant B3,275,572541,956
Events in quadrant C3,892,983525,068
Events in quadrant D3,072,158513,294

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118643
B0134052
C0151222
D0130292

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5535250.451671%
B55351522.746161%
C55352815.076784%
D5535911.644083%

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 8761 5537 13 13 0.15% 0.23%
B 8761 5537 93 93 1.06% 1.68%
C 8761 5537 216 216 2.47% 3.90%
D 8761 5537 77 77 0.88% 1.39%

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 225598 1744.23 631 617 129.0
A 9 143 49328 377.65 631 617 129.0
A 7 3 21424 161.31 631 617 129.0
B 5 200 320493 2647.5 626 609 120.8
B 4 171 174930 1442.76 626 609 120.8
B 0 189 75269 617.92 626 609 120.8
C 14 254 646252 4579.98 602 606 141.0
C 0 10 485746 3441.41 602 606 141.0
C 15 214 228941 1619.73 602 606 141.0
D 2 250 219340 1450.11 613 595 150.8
D 13 249 169701 1121.05 613 595 150.8
D 12 227 109989 725.2 613 595 150.8

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