ASTROSAT CZTI

Data Quality Report

Orbit 06264

Creation date: 2024-06-27T15:05:08.307891
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/AS1G06_168T04_9000000820_06264cztM0_level2.evt modeM0/AS1G06_168T04_9000000820_06264cztM0_level2_quad_clean.evt
Size (bytes)293,425,92053,752,320
Size279.8 MB 51.3 MB
Events in quadrant A1,986,490328,588
Events in quadrant B2,152,997331,889
Events in quadrant C1,928,462332,743
Events in quadrant D2,511,612317,945

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0900
B0900
C0900
D0900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090871
B094021
C090421
D0105191

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A449580.177976%
B4495220.489433%
C449560.133482%
D4495491.090100%

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 4495 4495 0 0 0.00% 0.00%
B 4495 4495 13 13 0.29% 0.29%
C 4495 4495 0 0 0.00% 0.00%
D 4495 4495 36 36 0.80% 0.80%

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 13 210 8190 74.27 507 496 103.6
A 15 239 7427 66.9 507 496 103.6
A 15 174 7019 62.96 507 496 103.6
B 11 51 67872 692.15 509 496 97.3
B 3 64 50173 510.33 509 496 97.3
B 0 219 34767 352.07 509 496 97.3
C 13 61 3912 29.94 493 494 114.2
C 8 222 2451 17.14 493 494 114.2
C 3 202 1347 7.47 493 494 114.2
D 12 220 529550 4412.44 490 475 119.9
D 2 152 43687 360.38 490 475 119.9
D 2 63 25134 205.65 490 475 119.9

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