ASTROSAT CZTI

Data Quality Report

Orbit 45259

Creation date: 2024-06-27T23:11:35.359392
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_023T05_9000006062_45259cztM0_level2.fits modeM0/AS1A13_023T05_9000006062_45259cztM0_level2_quad_clean.evt
Size (bytes)331,490,88077,273,280
Size316.1 MB 73.7 MB
Events in quadrant A3,866,317508,189
Events in quadrant B2,158,535537,001
Events in quadrant C2,147,998517,731
Events in quadrant D3,733,193448,003

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152741
B096691
C096811
D0142071

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A46811673.567614%
B4681751.602222%
C4681631.345866%
D46813327.092502%

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 4681 4681 69 69 1.47% 1.47%
B 4681 4681 4 4 0.09% 0.09%
C 4681 4681 5 5 0.11% 0.11%
D 4681 4681 293 293 6.26% 6.26%

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 1541705 13913.02 530 518 110.8
A 13 248 274713 2475.29 530 518 110.8
A 3 137 6143 50.78 530 518 110.8
B 5 172 19880 182.93 534 519 105.8
B 5 207 14605 133.09 534 519 105.8
B 12 111 13739 124.91 534 519 105.8
C 2 14 36700 284.86 534 537 127.0
C 14 254 9885 73.63 534 537 127.0
C 1 3 8750 64.69 534 537 127.0
D 13 249 859993 6638.79 515 501 129.5
D 11 241 427040 3294.62 515 501 129.5
D 5 222 199027 1533.43 515 501 129.5

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