ASTROSAT CZTI

Data Quality Report

Orbit 36255

Creation date: 2022-06-13T14:23:59.187894
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/AS1A10_071T37_9000005180_36255cztM0_level2.evt modeM0/AS1A10_071T37_9000005180_36255cztM0_level2_quad_clean.evt
Size (bytes)812,960,640138,153,600
Size775.3 MB 131.8 MB
Events in quadrant A4,435,646914,167
Events in quadrant B7,485,778884,186
Events in quadrant C5,202,931896,666
Events in quadrant D6,868,333844,241

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01900
B01900
C01900
D01900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192153
B0283782
C0210702
D0264332

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9293230.247498%
B92938158.770042%
C92931781.915420%
D92933493.755515%

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 12279 9295 5 5 0.04% 0.05%
B 12279 9295 639 639 5.20% 6.87%
C 12279 9295 132 132 1.08% 1.42%
D 12279 9295 337 337 2.74% 3.63%

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 237774 1089.78 1072 1048 217.2
A 9 143 35053 156.54 1072 1048 217.2
A 13 254 16480 71.04 1072 1048 217.2
B 5 236 1437354 7299.07 1018 992 196.8
B 5 172 1117155 5671.94 1018 992 196.8
B 4 171 704882 3576.91 1018 992 196.8
C 0 207 541258 2222.98 1037 1042 243.0
C 15 214 382335 1569.01 1037 1042 243.0
C 0 10 236036 967.0 1037 1042 243.0
D 12 6 1371573 5385.25 1033 1005 254.5
D 10 118 389263 1525.55 1033 1005 254.5
D 12 235 387346 1518.02 1033 1005 254.5

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