ASTROSAT CZTI

Data Quality Report

Orbit 42991

Creation date: 2024-06-27T22:46:38.444600
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/AS1T05_148T01_9000005838_42991cztM0_level2.fits modeM0/AS1T05_148T01_9000005838_42991cztM0_level2_quad_clean.evt
Size (bytes)501,099,840107,179,200
Size477.9 MB 102.2 MB
Events in quadrant A3,631,430806,927
Events in quadrant B7,187,962579,110
Events in quadrant C3,141,572791,376
Events in quadrant D4,161,282683,866

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143052
B0249362
C0123902
D0158922

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54931472.676133%
B5493179632.696159%
C5493290.527945%
D54932925.315857%

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 7166 5494 115 115 1.60% 2.09%
B 7166 5494 1487 1487 20.75% 27.07%
C 7166 5494 14 14 0.20% 0.25%
D 7166 5494 269 269 3.75% 4.90%

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 581788 3739.07 686 674 155.4
A 15 237 267704 1718.16 686 674 155.4
A 15 222 64207 408.79 686 674 155.4
B 4 81 2713626 21579.55 590 577 125.7
B 4 171 2089949 16618.83 590 577 125.7
B 3 112 49664 390.44 590 577 125.7
C 5 250 300390 1738.16 669 673 172.4
C 15 214 228106 1318.96 669 673 172.4
C 13 61 4565 22.57 669 673 172.4
D 1 47 830318 4792.67 650 627 173.1
D 1 52 399756 2305.55 650 627 173.1
D 13 249 358648 2068.09 650 627 173.1

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