ASTROSAT CZTI

Data Quality Report

Orbit 40614

Creation date: 2024-06-27T22:18:13.471050
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_054T02_9000005550_40614cztM0_level2.fits modeM0/AS1A12_054T02_9000005550_40614cztM0_level2_quad_clean.evt
Size (bytes)982,195,200240,871,680
Size936.7 MB 229.7 MB
Events in quadrant A8,354,4931,663,254
Events in quadrant B8,351,9861,683,273
Events in quadrant C8,226,1921,597,963
Events in quadrant D10,220,5111,276,165

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0348345
B0352964
C0345534
D0412124

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15526290.186783%
B155261621.043411%
C155263041.958006%
D15526242715.631843%

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 19856 15529 7 7 0.04% 0.05%
B 19856 15529 110 110 0.55% 0.71%
C 19856 15529 297 297 1.50% 1.91%
D 19856 15528 656 656 3.30% 4.22%

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 1272080 3758.83 1662 1625 338.0
A 2 79 432602 1275.11 1662 1625 338.0
A 6 10 99699 290.17 1662 1625 338.0
B 0 190 654182 2074.11 1649 1601 314.6
B 5 255 553242 1753.29 1649 1601 314.6
B 0 229 274117 866.14 1649 1601 314.6
C 14 254 1049185 2791.77 1614 1623 375.2
C 15 214 658846 1751.51 1614 1623 375.2
C 9 187 88452 231.4 1614 1623 375.2
D 12 227 2175753 5909.95 1497 1459 367.9
D 12 191 547474 1484.12 1497 1459 367.9
D 2 249 448182 1214.24 1497 1459 367.9

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