ASTROSAT CZTI

Data Quality Report

Orbit 20916

Creation date: 2024-06-27T18:21:10.175160
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/AS1C04_001T01_9000003082_20916cztM0_level2.evt modeM0/AS1C04_001T01_9000003082_20916cztM0_level2_quad_clean.evt
Size (bytes)50,601,60015,598,080
Size48.3 MB 14.9 MB
Events in quadrant A395,350108,202
Events in quadrant B381,942105,961
Events in quadrant C355,987101,803
Events in quadrant D351,193102,489

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04733
B04939
C05040
D04834

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A098
B074
C0119
D074

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A053123727
B056814145
C049503493
D051613723

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A662162.416918%
B645172.635659%
C665101.503759%
D66030.454545%

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 4154 738 2 2 0.05% 0.27%
B 4146 714 0 0 0.00% 0.00%
C 4346 753 0 0 0.00% 0.00%
D 4227 735 0 0 0.00% 0.00%

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 5 16 30757 1482.98 92 90 20.7
A 6 16 5250 249.52 92 90 20.7
A 5 98 1953 90.09 92 90 20.7
B 7 220 17778 936.68 89 87 18.9
B 0 219 6848 357.97 89 87 18.9
B 4 216 2259 115.0 89 87 18.9
C 14 238 13933 628.57 87 87 22.0
C 7 247 1110 46.44 87 87 22.0
C 3 233 762 30.64 87 87 22.0
D 1 52 8565 361.37 89 86 23.5
D 3 238 2259 92.61 89 86 23.5
D 2 234 2180 89.24 89 86 23.5

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