ASTROSAT CZTI

Data Quality Report

Orbit 21575

Creation date: 2024-06-27T18:29:42.114125
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_182T02_9000003202_21575cztM0_level2.evt modeM0/AS1A05_182T02_9000003202_21575cztM0_level2_quad_clean.evt
Size (bytes)226,699,20046,471,680
Size216.2 MB 44.3 MB
Events in quadrant A1,566,647296,628
Events in quadrant B1,623,391303,433
Events in quadrant C1,585,264295,070
Events in quadrant D1,872,194285,598

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A065591
B067141
C065981
D076141

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3180170.534591%
B3180331.037736%
C3180621.949686%
D3179611.918842%

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 3940 3181 0 0 0.00% 0.00%
B 3940 3181 1 1 0.03% 0.03%
C 3940 3181 0 0 0.00% 0.00%
D 3939 3180 27 27 0.69% 0.85%

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 4609 50.6 405 395 83.3
A 0 226 3626 38.79 405 395 83.3
A 3 137 3423 36.36 405 395 83.3
B 0 190 16307 201.22 403 392 79.1
B 3 64 9584 116.22 403 392 79.1
B 12 111 9448 114.5 403 392 79.1
C 14 238 61984 663.24 389 389 92.9
C 3 233 4135 40.34 389 389 92.9
C 13 61 2731 25.22 389 389 92.9
D 1 52 105681 1096.96 394 381 96.0
D 12 235 102391 1062.69 394 381 96.0
D 13 153 93242 967.38 394 381 96.0

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