ASTROSAT CZTI

Data Quality Report

Orbit 26276

Creation date: 2024-06-27T19:26:55.282979
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_079T03_9000003790_26276cztM0_level2.evt modeM0/AS1A09_079T03_9000003790_26276cztM0_level2_quad_clean.evt
Size (bytes)490,763,52098,720,640
Size468.0 MB 94.1 MB
Events in quadrant A3,412,036620,865
Events in quadrant B3,399,242644,189
Events in quadrant C3,821,154623,897
Events in quadrant D3,749,243607,674

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148350
B0146850
C0159230
D0159730

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70722673.775452%
B70722603.676471%
C70723785.345023%
D70733034.283897%

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 7202 7074 7 7 0.10% 0.10%
B 7202 7074 1 1 0.01% 0.01%
C 7202 7074 55 55 0.76% 0.78%
D 7203 7075 125 125 1.74% 1.77%

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 109682 624.07 855 834 174.4
A 13 254 11351 60.3 855 834 174.4
A 3 137 8101 41.66 855 834 174.4
B 12 111 20282 117.75 855 834 165.2
B 11 111 17938 103.56 855 834 165.2
B 5 172 16842 96.92 855 834 165.2
C 4 254 413420 2155.95 817 820 191.4
C 14 238 130507 677.65 817 820 191.4
C 2 16 49008 251.8 817 820 191.4
D 12 33 422309 2121.49 830 807 198.7
D 1 52 137707 689.04 830 807 198.7
D 2 234 29429 144.06 830 807 198.7

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