ASTROSAT CZTI

Data Quality Report

Orbit 13886

Creation date: 2024-06-27T16:47:22.482093
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/AS1A04_010T01_9000002046_13886cztM0_level2.evt modeM0/AS1A04_010T01_9000002046_13886cztM0_level2_quad_clean.evt
Size (bytes)601,715,52079,404,480
Size573.8 MB 75.7 MB
Events in quadrant A3,994,827468,858
Events in quadrant B3,828,168479,992
Events in quadrant C3,738,683479,312
Events in quadrant D6,141,335442,576

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170503
B0163572
C0161252
D0233672

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76633344.358606%
B76633294.293358%
C76631962.557745%
D76635427.072948%

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 8064 7664 64 64 0.79% 0.84%
B 8064 7664 32 32 0.40% 0.42%
C 8064 7664 4 4 0.05% 0.05%
D 8064 7664 305 305 3.78% 3.98%

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 0 23 363702 1886.69 933 909 192.3
A 0 226 29910 150.82 933 909 192.3
A 1 162 12233 58.89 933 909 192.3
B 4 80 112909 611.88 930 907 183.0
B 4 173 37472 199.76 930 907 183.0
B 3 209 26649 140.63 930 907 183.0
C 3 233 148248 685.57 913 917 214.9
C 14 234 22283 99.42 913 917 214.9
C 12 4 11019 47.01 913 917 214.9
D 1 52 1885591 8801.9 886 862 214.1
D 13 122 294905 1373.21 886 862 214.1
D 8 195 244140 1136.14 886 862 214.1

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