ASTROSAT CZTI

Data Quality Report

Orbit 21093

Creation date: 2024-06-27T18:23:27.791093
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/AS1A05_163T01_9000003118_21093cztM0_level2.evt modeM0/AS1A05_163T01_9000003118_21093cztM0_level2_quad_clean.evt
Size (bytes)1,715,849,280182,531,520
Size1.6 GB 174.1 MB
Events in quadrant A8,522,6421,200,042
Events in quadrant B9,167,6181,202,799
Events in quadrant C8,360,1061,155,706
Events in quadrant D24,759,349785,233

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0361513
B0376394
C0355413
D0852173

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03500
B03500
C03500
D03500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A171382041.190337%
B171372811.639727%
C171372171.266266%
D17139576933.660074%

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 19638 17141 64 64 0.33% 0.37%
B 19638 17141 58 58 0.30% 0.34%
C 19638 17141 20 20 0.10% 0.12%
D 19639 17141 5355 5355 27.27% 31.24%

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 337686 791.68 2116 2070 423.9
A 15 192 32228 71.14 2116 2070 423.9
A 13 254 23534 50.63 2116 2070 423.9
B 7 220 472319 1175.32 2116 2065 400.1
B 0 219 226371 560.61 2116 2065 400.1
B 3 64 95838 234.37 2116 2065 400.1
C 14 238 316044 661.73 2029 2046 474.5
C 7 221 113299 234.46 2029 2046 474.5
C 9 54 24007 46.28 2029 2046 474.5
D 1 239 13878312 33057.63 1730 1683 419.8
D 1 52 3088962 7354.68 1730 1683 419.8
D 13 153 545503 1295.52 1730 1683 419.8

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