ASTROSAT CZTI

Data Quality Report

Orbit 20210626_C06_002T01_9000004490_level2

Creation date: 2021-06-29T10:28:30.584740
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/AS1C06_002T01_9000004490cztM0_level2_bc.evt modeM0/AS1C06_002T01_9000004490cztM0_level2_quad_clean.evt
Size (bytes)5,313,980,1601,581,600,960
Size4.9 GB 1.5 GB
Events in quadrant A20,468,24110,900,737
Events in quadrant B51,913,47310,714,449
Events in quadrant C22,264,29610,546,360
Events in quadrant D59,603,8968,998,269

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02028680
B03090810
C02114900
D03782340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01290
B01290
C01290
D01290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020080
B020080
C020080
D020080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9834410291.046327%
B9834430523.103392%
C9834423552.394655%
D983441942219.749044%

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 113480 98345 1 1 0.00% 0.00%
B 113480 98347 62 62 0.05% 0.06%
C 113480 98347 6 6 0.01% 0.01%
D 113480 98346 853 853 0.75% 0.87%

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 13 254 182172 155.26 5271 5187 1139.9
A 12 96 76418 62.49 5271 5187 1139.9
A 0 226 33410 24.76 5271 5187 1139.9
B 6 159 27693484 27917.36 5250 5145 991.8
B 5 172 1229779 1234.76 5250 5145 991.8
B 0 183 769955 771.14 5250 5145 991.8
C 0 10 1120973 922.98 5102 5097 1209.0
C 3 233 566232 464.13 5102 5097 1209.0
C 1 16 217808 175.94 5102 5097 1209.0
D 13 174 22464368 20637.62 4634 4491 1088.3
D 8 195 14552594 13367.76 4634 4491 1088.3
D 13 249 1839291 1685.94 4634 4491 1088.3

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