ASTROSAT CZTI

Data Quality Report

Orbit 36797

Creation date: 2024-06-27T21:31:48.584001
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/AS1A11_075T01_9000005244_36797cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36797cztM0_level2_quad_clean.evt
Size (bytes)517,158,72080,023,680
Size493.2 MB 76.3 MB
Events in quadrant A2,497,327543,035
Events in quadrant B7,009,774460,703
Events in quadrant C2,804,727555,510
Events in quadrant D3,017,027519,180

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104533
B0241022
C0112562
D0122722

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A491140.081450%
B4911188538.383221%
C4911350.712686%
D4911971.975158%

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 7035 4912 2 2 0.03% 0.04%
B 7035 4911 1774 1774 25.22% 36.12%
C 7035 4912 32 32 0.45% 0.65%
D 7035 4912 105 105 1.49% 2.14%

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 209778 1809.55 574 563 115.6
A 15 223 48114 411.28 574 563 115.6
A 13 6 12242 101.01 574 563 115.6
B 12 1 4719764 53599.4 466 455 88.0
B 5 172 172323 1951.99 466 455 88.0
B 0 190 99013 1119.37 466 455 88.0
C 15 214 223678 1715.72 565 571 130.0
C 14 254 138207 1058.44 565 571 130.0
C 3 233 64987 495.37 565 571 130.0
D 13 249 538028 3984.89 554 538 134.9
D 2 153 86922 640.44 554 538 134.9
D 2 250 68508 503.92 554 538 134.9

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