ASTROSAT CZTI

Data Quality Report

Orbit 41516

Creation date: 2024-06-27T22:29:58.291315
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/AS1A12_035T02_9000005676_41516cztM0_level2.fits modeM0/AS1A12_035T02_9000005676_41516cztM0_level2_quad_clean.evt
Size (bytes)355,852,80091,261,440
Size339.4 MB 87.0 MB
Events in quadrant A3,197,092636,349
Events in quadrant B3,146,455616,097
Events in quadrant C3,080,852585,857
Events in quadrant D3,340,266558,575

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127033
B0127552
C0123262
D0133702

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52381031.966399%
B52382965.651012%
C52382204.200076%
D52381783.398244%

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 7151 5239 91 91 1.27% 1.74%
B 7151 5239 240 240 3.36% 4.58%
C 7151 5239 221 221 3.09% 4.22%
D 7151 5239 178 178 2.49% 3.40%

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 528082 4335.05 601 589 121.7
A 15 190 212305 1739.93 601 589 121.7
A 2 79 86128 702.98 601 589 121.7
B 0 186 583276 5204.39 590 576 112.0
B 0 190 103280 917.3 590 576 112.0
B 0 245 89434 793.64 590 576 112.0
C 0 10 564903 4274.83 567 570 132.0
C 15 214 214012 1616.83 567 570 132.0
C 14 254 69639 523.2 567 570 132.0
D 2 249 285896 2024.29 580 565 141.0
D 1 47 211500 1496.48 580 565 141.0
D 1 52 209079 1479.31 580 565 141.0

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