ASTROSAT CZTI

Data Quality Report

Orbit 49762

Creation date: 2024-12-10T05:48:31.229445
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_037T01_9000006440_49762cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49762cztM0_level2_quad_clean.evt
Size (bytes)1,473,497,28049,841,280
Size1.4 GB 47.5 MB
Events in quadrant A18,999,45785,343
Events in quadrant B5,037,980775,361
Events in quadrant C11,519,5971,118
Events in quadrant D18,377,71698,944

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0617252
B0202962
C0397092
D0599642

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7878722291.673013%
B78793053.871050%
C7879787299.911156%
D7879695188.221856%

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 9308 7878 7442 7442 79.95% 94.47%
B 9309 7879 215 215 2.31% 2.73%
C 9308 7878 2388 2388 25.66% 30.31%
D 9308 7878 6638 6638 71.31% 84.26%

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 8547668 54550.49 564 545 156.7
A 12 50 3341627 21323.86 564 545 156.7
A 7 64 876588 5591.19 564 545 156.7
B 10 28 465574 2618.45 839 813 177.5
B 5 185 176437 989.46 839 813 177.5
B 4 171 165845 929.78 839 813 177.5
C 15 190 2033135 48219.1 103 100 42.2
C 15 180 2019749 47901.61 103 100 42.2
C 1 44 1255462 29774.41 103 100 42.2
D 15 40 2884888 21330.84 410 394 135.2
D 15 168 2316357 17126.55 410 394 135.2
D 7 61 2290950 16938.67 410 394 135.2

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