ASTROSAT CZTI

Data Quality Report

Orbit 39481

Creation date: 2024-06-27T22:05:09.260399
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/AS1C07_001T02_9000005486_39481cztM0_level2.fits modeM0/AS1C07_001T02_9000005486_39481cztM0_level2_quad_clean.evt
Size (bytes)389,422,08095,333,760
Size371.4 MB 90.9 MB
Events in quadrant A3,808,624636,651
Events in quadrant B2,853,124656,512
Events in quadrant C3,544,702612,644
Events in quadrant D3,747,456566,458

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01501454
B0127629
C01449410
D0153844

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0161
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5927350.590518%
B5933400.674195%
C5933941.584359%
D59361252.105795%

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 7250 5932 21 21 0.29% 0.35%
B 7249 5936 21 21 0.29% 0.35%
C 7250 5938 75 75 1.03% 1.26%
D 7250 5938 115 115 1.59% 1.94%

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 15 222 565990 4342.29 635 621 130.2
A 10 83 476035 3651.4 635 621 130.2
A 9 143 141604 1082.81 635 621 130.2
B 5 255 156495 1271.27 632 614 122.6
B 5 172 150477 1222.19 632 614 122.6
B 8 3 30959 247.48 632 614 122.6
C 15 208 547964 3794.19 614 617 144.3
C 15 214 250163 1729.84 614 617 144.3
C 9 187 208029 1437.77 614 617 144.3
D 12 0 848402 5603.37 615 597 151.3
D 13 249 258574 1705.04 615 597 151.3
D 12 227 125088 822.79 615 597 151.3

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