ASTROSAT CZTI

Data Quality Report

Orbit 15482

Creation date: 2024-06-27T17:09:12.304020
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/AS1T02_082T01_9000002286_15482cztM0_level2.evt modeM0/AS1T02_082T01_9000002286_15482cztM0_level2_quad_clean.evt
Size (bytes)534,144,96087,540,480
Size509.4 MB 83.5 MB
Events in quadrant A3,458,875544,273
Events in quadrant B3,734,468548,389
Events in quadrant C4,103,982531,975
Events in quadrant D4,380,555514,534

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151183
B0156782
C0167242
D0179882

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7354700.951863%
B73541041.414196%
C73541692.298069%
D73542042.774001%

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 9115 7357 2 2 0.02% 0.03%
B 9115 7356 9 9 0.10% 0.12%
C 9115 7355 5 5 0.05% 0.07%
D 9115 7356 123 123 1.35% 1.67%

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 14 238 15237 80.23 889 870 179.1
A 0 226 7911 39.32 889 870 179.1
A 15 69 7277 35.78 889 870 179.1
B 0 197 69393 401.19 891 870 170.8
B 0 189 66733 385.62 891 870 170.8
B 0 229 28852 163.83 891 870 170.8
C 3 233 629902 3153.8 853 858 199.5
C 14 238 130330 649.13 853 858 199.5
C 7 221 8908 40.36 853 858 199.5
D 1 52 576218 2741.37 858 831 209.9
D 5 222 201267 954.96 858 831 209.9
D 12 221 97701 461.53 858 831 209.9

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