ASTROSAT CZTI

Data Quality Report

Orbit 32275

Creation date: 2024-06-27T20:38:21.022573
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/AS1A09_131T01_9000004696_32275cztM0_level2.evt modeM0/AS1A09_131T01_9000004696_32275cztM0_level2_quad_clean.evt
Size (bytes)622,581,12080,475,840
Size593.7 MB 76.7 MB
Events in quadrant A2,829,571519,207
Events in quadrant B6,497,656503,628
Events in quadrant C3,235,251513,346
Events in quadrant D5,890,223484,732

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123712
B0235831
C0134171
D0215761

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5949310.521096%
B594974212.472684%
C59491983.328290%
D59494297.211296%

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 7034 5950 0 0 0.00% 0.00%
B 7034 5950 476 476 6.77% 8.00%
C 7034 5950 22 22 0.31% 0.37%
D 7034 5950 298 298 4.24% 5.01%

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 13 254 11079 70.57 729 713 146.9
A 13 6 10430 66.15 729 713 146.9
A 3 137 7095 43.45 729 713 146.9
B 6 159 1678322 12714.52 699 682 131.9
B 4 80 1555977 11787.29 699 682 131.9
B 5 172 354082 2678.35 699 682 131.9
C 3 233 163370 999.84 703 706 162.7
C 14 238 139990 856.13 703 706 162.7
C 4 175 65172 396.25 703 706 162.7
D 8 195 1771082 10596.21 701 680 167.1
D 1 52 751991 4496.75 701 680 167.1
D 12 233 248347 1482.34 701 680 167.1

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