ASTROSAT CZTI

Data Quality Report

Orbit 47378

Creation date: 2024-07-02T12:37:10.286144
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_093T25_9000006324_47378cztM0_level2.fits modeM0/AS1A13_093T25_9000006324_47378cztM0_level2_quad_clean.evt
Size (bytes)668,162,880120,104,640
Size637.2 MB 114.5 MB
Events in quadrant A8,437,375826,618
Events in quadrant B4,409,512858,033
Events in quadrant C3,695,817813,380
Events in quadrant D7,580,246590,822

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0309373
B0184060
C0167250
D0281980

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78782673.389185%
B78781511.916730%
C7878470.596598%
D7878174722.175679%

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 7878 7878 61 61 0.77% 0.77%
B 7878 7878 49 49 0.62% 0.62%
C 7878 7878 9 9 0.11% 0.11%
D 7877 7877 1602 1602 20.34% 20.34%

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 3816229 20229.16 896 876 188.6
A 15 235 823185 4359.92 896 876 188.6
A 9 191 285379 1508.45 896 876 188.6
B 4 171 597264 3333.2 895 867 178.9
B 5 32 104696 580.29 895 867 178.9
B 5 172 41499 227.09 895 867 178.9
C 0 207 169222 805.43 879 883 209.0
C 3 233 54878 258.34 879 883 209.0
C 1 3 35605 166.13 879 883 209.0
D 12 2 4330557 22973.19 740 718 188.5
D 2 249 112074 590.83 740 718 188.5
D 12 128 111839 589.58 740 718 188.5

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