ASTROSAT CZTI

Data Quality Report

Orbit 14754

Creation date: 2024-06-27T16:59:06.787408
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/AS1A04_203T01_9000002180_14754cztM0_level2.evt modeM0/AS1A04_203T01_9000002180_14754cztM0_level2_quad_clean.evt
Size (bytes)841,072,32090,584,640
Size802.1 MB 86.4 MB
Events in quadrant A12,420,372517,382
Events in quadrant B4,043,508575,345
Events in quadrant C4,638,278561,156
Events in quadrant D3,854,454558,008

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0421904
B0170802
C0188622
D0168632

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7627317441.615314%
B76271892.478039%
C76271471.927363%
D7627951.245575%

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 8199 7628 2283 2283 27.84% 29.93%
B 8199 7629 24 24 0.29% 0.31%
C 8199 7628 18 18 0.22% 0.24%
D 8199 7631 30 30 0.37% 0.39%

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 8 15 9028586 54191.92 822 804 166.6
A 12 189 133633 797.35 822 804 166.6
A 0 23 73338 435.41 822 804 166.6
B 10 16 227898 1241.94 943 918 182.8
B 4 142 35175 187.44 943 918 182.8
B 0 229 28555 151.22 943 918 182.8
C 3 233 911410 4252.23 912 914 214.1
C 4 254 104884 485.56 912 914 214.1
C 0 207 58362 268.29 912 914 214.1
D 2 136 221990 921.36 914 889 240.0
D 13 172 48041 196.49 914 889 240.0
D 2 234 35734 145.2 914 889 240.0

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