ASTROSAT CZTI

Data Quality Report

Orbit 18951

Creation date: 2024-06-27T17:56:59.686623
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/AS1A05_205T01_9000002824_18951cztM0_level2.evt modeM0/AS1A05_205T01_9000002824_18951cztM0_level2_quad_clean.evt
Size (bytes)507,623,04045,800,640
Size484.1 MB 43.7 MB
Events in quadrant A6,261,633159,560
Events in quadrant B2,979,711325,294
Events in quadrant C2,182,817315,814
Events in quadrant D3,676,187300,941

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213141
B0114361
C088641
D0136501

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4016206151.319721%
B401641910.433267%
C40162265.627490%
D401647511.827689%

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 4151 4016 1449 1449 34.91% 36.08%
B 4151 4017 114 114 2.75% 2.84%
C 4151 4017 0 0 0.00% 0.00%
D 4151 4017 188 188 4.53% 4.68%

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 14 235 4843853 64006.65 367 359 75.7
A 0 226 3127 36.58 367 359 75.7
A 3 137 2930 33.98 367 359 75.7
B 3 112 879711 8436.71 518 504 104.2
B 0 189 32843 310.32 518 504 104.2
B 12 111 12243 112.65 518 504 104.2
C 3 233 98676 793.23 512 514 123.8
C 14 238 76986 617.95 512 514 123.8
C 8 128 3953 27.79 512 514 123.8
D 7 238 1531424 11998.6 509 494 127.6
D 1 52 114700 895.08 509 494 127.6
D 12 218 43783 339.28 509 494 127.6

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