ASTROSAT CZTI

Data Quality Report

Orbit 36314

Creation date: 2022-06-18T16:19:24.009700
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_089T02_9000005188_36314cztM0_level2.evt modeM0/AS1A11_089T02_9000005188_36314cztM0_level2_quad_clean.evt
Size (bytes)579,090,24082,938,240
Size552.3 MB 79.1 MB
Events in quadrant A2,712,328579,788
Events in quadrant B5,267,548526,725
Events in quadrant C3,433,747557,191
Events in quadrant D5,747,099457,734

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116653
B0193282
C0136912
D0208552

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5562120.215750%
B556284615.210356%
C55621282.301330%
D5562113920.478245%

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 8786 5564 0 0 0.00% 0.00%
B 8786 5564 723 723 8.23% 12.99%
C 8786 5564 119 119 1.35% 2.14%
D 8785 5563 1134 1134 12.91% 20.38%

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 10 83 190383 1427.24 651 637 132.9
A 13 254 7133 48.86 651 637 132.9
A 3 137 6675 45.42 651 637 132.9
B 4 171 1719840 14710.63 600 585 116.9
B 5 172 744366 6364.08 600 585 116.9
B 5 236 176675 1506.69 600 585 116.9
C 0 207 581476 4017.02 617 621 144.6
C 15 214 237979 1641.5 617 621 144.6
C 0 10 203895 1405.78 617 621 144.6
D 12 227 2722410 19742.82 558 543 137.9
D 12 6 504226 3653.42 558 543 137.9
D 2 250 97050 700.0 558 543 137.9

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