ASTROSAT CZTI

Data Quality Report

Orbit 17392

Creation date: 2024-06-27T17:35:56.142281
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/AS1T03_030T01_9000002574_17392cztM0_level2.evt modeM0/AS1T03_030T01_9000002574_17392cztM0_level2_quad_clean.evt
Size (bytes)1,644,094,080210,360,960
Size1.5 GB 200.6 MB
Events in quadrant A8,605,2891,327,578
Events in quadrant B8,968,8711,339,335
Events in quadrant C9,032,6421,292,988
Events in quadrant D21,929,8081,126,926

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380084
B0386094
C0382035
D0780134

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03780
C03780
D03780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186221660.891419%
B186232761.482038%
C186222351.261948%
D18622289515.546128%

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 20892 18627 2 2 0.01% 0.01%
B 20893 18627 16 16 0.08% 0.09%
C 20892 18627 0 0 0.00% 0.00%
D 20892 18626 2495 2495 11.94% 13.40%

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 0 226 19455 38.13 2236 2186 452.9
A 3 137 16952 32.61 2236 2186 452.9
A 12 194 16335 31.24 2236 2186 452.9
B 0 197 98148 224.57 2232 2172 427.4
B 12 111 52082 116.78 2232 2172 427.4
B 11 111 45252 100.8 2232 2172 427.4
C 14 238 328343 649.74 2150 2163 502.0
C 5 218 216881 427.71 2150 2163 502.0
C 3 233 73867 142.83 2150 2163 502.0
D 11 176 8257091 16358.84 2062 2005 504.6
D 1 52 2682773 5312.39 2062 2005 504.6
D 13 232 1805031 3573.0 2062 2005 504.6

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