ASTROSAT CZTI

Data Quality Report

Orbit 36655

Creation date: 2024-06-27T21:29:50.191412
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_049T05_9000005232_36655cztM0_level2.evt modeM0/AS1A11_049T05_9000005232_36655cztM0_level2_quad_clean.evt
Size (bytes)448,407,36086,817,600
Size427.6 MB 82.8 MB
Events in quadrant A2,713,797580,871
Events in quadrant B2,718,394582,179
Events in quadrant C3,084,747564,347
Events in quadrant D4,701,693529,229

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112853
B0112322
C0123592
D0175192

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5313190.357613%
B5313150.282326%
C53131352.540937%
D531356610.653115%

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 7076 5314 6 6 0.08% 0.11%
B 7076 5314 7 7 0.10% 0.13%
C 7076 5314 93 93 1.31% 1.75%
D 7076 5314 484 484 6.84% 9.11%

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 214702 1691.91 630 618 126.5
A 9 143 22282 171.21 630 618 126.5
A 10 255 14276 107.94 630 618 126.5
B 0 221 116899 978.17 621 607 118.9
B 5 255 43250 358.68 621 607 118.9
B 0 190 33292 274.92 621 607 118.9
C 0 10 304521 2192.48 599 605 138.6
C 15 214 243239 1750.38 599 605 138.6
C 14 254 149921 1077.18 599 605 138.6
D 2 250 944421 6653.44 584 569 141.9
D 2 249 643673 4533.39 584 569 141.9
D 7 38 192805 1355.12 584 569 141.9

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