ASTROSAT CZTI

Data Quality Report

Orbit 18579

Creation date: 2024-06-27T17:51:41.697372
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_075T07_9000002760_18579cztM0_level2.evt modeM0/AS1A05_075T07_9000002760_18579cztM0_level2_quad_clean.evt
Size (bytes)1,349,979,840224,691,840
Size1.3 GB 214.3 MB
Events in quadrant A9,181,8541,382,415
Events in quadrant B8,896,8031,421,942
Events in quadrant C9,316,8521,371,421
Events in quadrant D12,219,6271,335,345

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0396255
B0384384
C0398584
D0489244

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A187713461.843269%
B187722281.214575%
C187723942.098871%
D187729224.911570%

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 20576 18771 91 91 0.44% 0.48%
B 20577 18772 2 2 0.01% 0.01%
C 20577 18772 94 94 0.46% 0.50%
D 20577 18773 673 673 3.27% 3.58%

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 13 540347 1179.56 2241 2186 456.2
A 13 254 30047 61.07 2241 2186 456.2
A 0 226 19363 37.65 2241 2186 456.2
B 12 111 53066 118.29 2244 2184 430.2
B 0 190 47864 106.19 2244 2184 430.2
B 11 111 46253 102.45 2244 2184 430.2
C 9 54 454691 900.23 2152 2167 502.7
C 14 238 332027 656.21 2152 2167 502.7
C 4 254 124240 242.85 2152 2167 502.7
D 1 52 2237267 4265.21 2162 2103 524.0
D 7 238 1501850 2861.87 2162 2103 524.0
D 10 50 145215 273.09 2162 2103 524.0

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