ASTROSAT CZTI

Data Quality Report

Orbit 09001

Creation date: 2024-06-27T15:39:57.809534
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/AS1C02_037T01_9000001252_09001cztM0_level2.evt modeM0/AS1C02_037T01_9000001252_09001cztM0_level2_quad_clean.evt
Size (bytes)476,098,56078,281,280
Size454.0 MB 74.7 MB
Events in quadrant A3,864,220486,985
Events in quadrant B3,361,348493,522
Events in quadrant C3,133,101480,830
Events in quadrant D3,628,533465,467

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156503
B0138092
C0133072
D0147002

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63611001.572080%
B6361941.477755%
C6361721.131898%
D63611141.792171%

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 7551 6361 1 1 0.01% 0.02%
B 7551 6361 2 2 0.03% 0.03%
C 7551 6361 6 6 0.08% 0.09%
D 7551 6361 38 38 0.50% 0.60%

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 8 5 614452 3648.83 826 810 168.2
A 3 1 40999 238.97 826 810 168.2
A 13 248 12905 71.92 826 810 168.2
B 6 51 36826 230.1 825 808 156.5
B 0 214 29833 185.43 825 808 156.5
B 0 230 16328 99.15 825 808 156.5
C 9 68 51898 279.49 787 793 182.9
C 1 3 6823 32.98 787 793 182.9
C 13 61 5920 28.04 787 793 182.9
D 1 52 233042 1092.42 783 767 212.6
D 14 50 114685 535.77 783 767 212.6
D 6 225 82281 383.37 783 767 212.6

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