ASTROSAT CZTI

Data Quality Report

Orbit 46870

Creation date: 2024-06-27T23:28:45.173803
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_053T01_9000006274_46870cztM0_level2.fits modeM0/AS1A13_053T01_9000006274_46870cztM0_level2_quad_clean.evt
Size (bytes)568,817,280125,294,400
Size542.5 MB 119.5 MB
Events in quadrant A7,301,824829,618
Events in quadrant B4,860,275843,883
Events in quadrant C3,568,002817,517
Events in quadrant D4,712,316752,467

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265833
B0197843
C0167943
D0197473

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1140103479564328140101833195566
B1-1-1
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79093364.248325%
B79083194.033890%
C79081111.403642%
D79082513.174001%

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 7944 7911 18 18 0.23% 0.23%
B 7943 7909 29 29 0.37% 0.37%
C 7943 7910 56 56 0.71% 0.71%
D 7943 7910 167 167 2.10% 2.11%

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 3740597 20689.4 874 855 180.8
A 9 191 105228 577.42 874 855 180.8
A 4 0 24901 133.03 874 855 180.8
B 3 112 1064129 6254.03 866 839 170.0
B 4 171 265417 1556.19 866 839 170.0
B 0 183 34590 198.51 866 839 170.0
C 1 241 186336 915.65 860 862 202.6
C 14 254 18260 85.89 860 862 202.6
C 1 3 7352 32.04 860 862 202.6
D 13 249 572787 2685.8 856 829 213.0
D 1 52 443707 2079.67 856 829 213.0
D 12 233 97319 453.1 856 829 213.0

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