ASTROSAT CZTI

Data Quality Report

Orbit 41768

Creation date: 2024-06-27T22:32:38.690295
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/AS1A12_044T19_9000005698_41768cztM0_level2.fits modeM0/AS1A12_044T19_9000005698_41768cztM0_level2_quad_clean.evt
Size (bytes)340,663,68087,886,080
Size324.9 MB 83.8 MB
Events in quadrant A2,955,372597,025
Events in quadrant B2,649,027606,319
Events in quadrant C3,159,771550,183
Events in quadrant D3,422,518527,048

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120302
B0115862
C0127862
D0138852

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5437160.294280%
B5437220.404635%
C54372414.432592%
D54371582.906014%

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 7019 5438 7 7 0.10% 0.13%
B 7018 5436 18 18 0.26% 0.33%
C 7018 5436 227 227 3.23% 4.18%
D 7019 5437 166 166 2.37% 3.05%

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 568061 4604.64 596 583 123.2
A 2 79 34375 274.2 596 583 123.2
A 7 3 16917 132.54 596 583 123.2
B 5 255 136956 1180.52 591 574 115.5
B 0 245 44406 379.41 591 574 115.5
B 0 183 42388 361.94 591 574 115.5
C 0 10 700827 5348.78 557 562 130.9
C 15 214 225970 1721.72 557 562 130.9
C 14 254 36019 270.83 557 562 130.9
D 2 249 239464 1683.12 572 556 141.9
D 2 120 186574 1310.51 572 556 141.9
D 5 32 161635 1134.81 572 556 141.9

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