ASTROSAT CZTI

Data Quality Report

Orbit 09338

Creation date: 2024-06-27T15:44:40.830680
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/AS1G07_022T01_9000001322_09338cztM0_level2.evt modeM0/AS1G07_022T01_9000001322_09338cztM0_level2_quad_clean.evt
Size (bytes)1,391,198,400265,104,000
Size1.3 GB 252.8 MB
Events in quadrant A11,229,9251,684,198
Events in quadrant B9,032,3911,698,818
Events in quadrant C10,887,0891,764,965
Events in quadrant D9,730,7341,603,860

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0469661075
B040170973
C0467811453
D0438501876

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03842
B03848
C038410
D038410

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0482
C0480
D0481

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185511770.954126%
B185741240.667600%
C185247313.946232%
D185162631.420393%

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 25869 18829 68 68 0.26% 0.36%
B 25869 18859 14 14 0.05% 0.07%
C 25869 18807 428 428 1.65% 2.28%
D 25869 18778 185 185 0.72% 0.99%

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 5 2084406 4811.39 2163 2122 432.8
A 13 251 334019 766.89 2163 2122 432.8
A 5 16 158434 361.18 2163 2122 432.8
B 0 219 154519 371.54 2190 2140 410.1
B 0 214 139380 334.63 2190 2140 410.1
B 10 245 65536 154.58 2190 2140 410.1
C 4 254 2828343 6002.37 2052 2058 470.9
C 13 61 15487 28.52 2052 2058 470.9
C 4 238 15414 28.37 2052 2058 470.9
D 12 233 727709 1351.29 2056 2007 537.0
D 1 52 291122 538.34 2056 2007 537.0
D 2 152 238500 440.36 2056 2007 537.0

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