ASTROSAT CZTI

Data Quality Report

Orbit 46739

Creation date: 2024-06-27T23:27:03.453751
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_205T01_9000006260_46739cztM0_level2.fits modeM0/AS1T05_205T01_9000006260_46739cztM0_level2_quad_clean.evt
Size (bytes)588,769,920130,887,360
Size561.5 MB 124.8 MB
Events in quadrant A7,673,394855,216
Events in quadrant B4,232,943892,947
Events in quadrant C3,715,150873,113
Events in quadrant D5,526,333762,624

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0279362
B0184392
C0173952
D0225242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83363253.898752%
B83351752.099580%
C8336280.335893%
D83364735.674184%

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 9201 8339 47 47 0.51% 0.56%
B 9200 8338 6 6 0.07% 0.07%
C 9201 8339 1 1 0.01% 0.01%
D 9201 8339 427 427 4.64% 5.12%

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 3841244 19584.23 933 910 196.1
A 2 79 147238 746.22 933 910 196.1
A 9 191 45198 225.85 933 910 196.1
B 3 112 347931 1850.81 938 907 187.5
B 4 171 64854 341.05 938 907 187.5
B 5 172 40101 209.04 938 907 187.5
C 3 233 29070 127.21 932 935 221.2
C 0 207 25030 108.94 932 935 221.2
C 14 254 16009 68.16 932 935 221.2
D 13 249 1665759 7332.22 900 872 227.1
D 9 19 84423 367.96 900 872 227.1
D 12 128 70684 307.45 900 872 227.1

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