ASTROSAT CZTI

Data Quality Report

Orbit 25655

Creation date: 2024-06-27T19:20:01.021431
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/AS1A09_013T02_9000003734_25655cztM0_level2.evt modeM0/AS1A09_013T02_9000003734_25655cztM0_level2_quad_clean.evt
Size (bytes)566,412,48098,340,480
Size540.2 MB 93.8 MB
Events in quadrant A3,979,328617,006
Events in quadrant B3,862,776626,039
Events in quadrant C4,139,898595,484
Events in quadrant D4,633,560588,363

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167070
B0165600
C0174540
D0188820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79263934.958365%
B79264355.488266%
C79275136.471553%
D79273614.554056%

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 8281 7927 2 2 0.02% 0.03%
B 8281 7926 1 1 0.01% 0.01%
C 8282 7928 41 41 0.50% 0.52%
D 8282 7928 35 35 0.42% 0.44%

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 8 192 244890 1248.4 966 941 195.4
A 13 254 11263 52.82 966 941 195.4
A 3 137 9437 43.48 966 941 195.4
B 0 245 70957 375.79 962 934 186.3
B 12 111 23299 120.02 962 934 186.3
B 11 111 21439 110.04 962 934 186.3
C 3 233 394059 1824.67 919 921 215.5
C 14 238 145371 670.43 919 921 215.5
C 8 128 13153 56.77 919 921 215.5
D 8 195 558970 2288.39 929 906 243.9
D 1 52 353538 1446.0 929 906 243.9
D 2 244 98804 401.44 929 906 243.9

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