ASTROSAT CZTI

Data Quality Report

Orbit 41890

Creation date: 2024-06-27T22:34:02.952320
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/AS1A12_099T01_9000005716_41890cztM0_level2.fits modeM0/AS1A12_099T01_9000005716_41890cztM0_level2_quad_clean.evt
Size (bytes)436,728,96088,007,040
Size416.5 MB 83.9 MB
Events in quadrant A4,539,823584,314
Events in quadrant B2,632,668626,141
Events in quadrant C3,211,978562,731
Events in quadrant D5,344,754498,375

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0320
C0320
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171772
B0118172
C0131812
D0197332

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56233315.886537%
B5623230.409034%
C56222604.624689%
D562261310.903593%

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 7296 5624 302 302 4.14% 5.37%
B 7296 5624 16 16 0.22% 0.28%
C 7295 5623 255 255 3.50% 4.53%
D 7295 5623 640 640 8.77% 11.38%

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 24 1720623 14120.19 588 575 121.8
A 10 83 524098 4297.69 588 575 121.8
A 2 79 12543 98.24 588 575 121.8
B 5 255 213125 1816.86 601 586 117.0
B 0 190 32889 276.14 601 586 117.0
B 12 111 15149 124.49 601 586 117.0
C 0 10 722341 5367.89 575 577 134.5
C 15 214 221734 1644.78 575 577 134.5
C 14 254 19662 141.94 575 577 134.5
D 12 79 2292280 16494.56 564 548 138.9
D 13 249 354732 2549.21 564 548 138.9
D 12 6 289897 2082.57 564 548 138.9

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