ASTROSAT CZTI

Data Quality Report

Orbit 47825

Creation date: 2024-08-01T15:21:13.820859
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/AS1A13_081T01_9000006354_47825cztM0_level2.fits modeM0/AS1A13_081T01_9000006354_47825cztM0_level2_quad_clean.evt
Size (bytes)696,444,48089,542,080
Size664.2 MB 85.4 MB
Events in quadrant A6,543,295660,697
Events in quadrant B2,930,290688,977
Events in quadrant C2,685,430658,301
Events in quadrant D13,128,840259,590

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239073
B0132901
C0130411
D0433451

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63512674.204062%
B63521382.172544%
C6352751.180730%
D6352386760.878463%

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 7271 6351 24 24 0.33% 0.38%
B 7272 6352 8 8 0.11% 0.13%
C 7272 6353 10 10 0.14% 0.16%
D 7272 6352 3841 3841 52.82% 60.47%

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 3506328 24847.55 683 669 141.1
A 0 31 392819 2779.5 683 669 141.1
A 3 137 8055 52.35 683 669 141.1
B 0 200 90884 674.43 683 661 133.8
B 10 7 32168 235.52 683 661 133.8
B 4 21 25892 188.6 683 661 133.8
C 14 254 55724 351.77 670 672 156.5
C 12 2 14376 87.57 670 672 156.5
C 13 61 4595 25.07 670 672 156.5
D 12 33 10256555 83175.81 485 469 123.3
D 12 2 589314 4775.47 485 469 123.3
D 2 249 137002 1107.27 485 469 123.3

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