ASTROSAT CZTI

Data Quality Report

Orbit 43795

Creation date: 2024-06-27T22:55:51.960431
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_018T01_9000005906_43795cztM0_level2.fits modeM0/AS1A13_018T01_9000005906_43795cztM0_level2_quad_clean.evt
Size (bytes)600,822,72095,961,600
Size573.0 MB 91.5 MB
Events in quadrant A4,110,906690,124
Events in quadrant B3,336,925716,759
Events in quadrant C7,915,804522,967
Events in quadrant D6,404,842550,709

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164143
B0137911
C0275351
D0231711

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60842353.862590%
B60851422.333607%
C6085175928.907149%
D6085100616.532457%

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 6949 6085 39 39 0.56% 0.64%
B 6950 6086 12 12 0.17% 0.20%
C 6950 6085 1507 1507 21.68% 24.77%
D 6949 6085 869 869 12.51% 14.28%

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 889140 5939.12 721 704 149.6
A 15 223 352780 2353.6 721 704 149.6
A 13 248 20822 134.49 721 704 149.6
B 0 200 211567 1484.79 720 701 142.0
B 5 235 69057 481.32 720 701 142.0
B 0 183 55748 387.61 720 701 142.0
C 15 174 3113223 21024.67 626 630 148.0
C 15 157 1202290 8116.87 626 630 148.0
C 15 158 327408 2207.29 626 630 148.0
D 12 33 2727935 16058.63 665 644 169.8
D 5 235 407487 2395.54 665 644 169.8
D 1 52 124880 731.52 665 644 169.8

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