ASTROSAT CZTI

Data Quality Report

Orbit 31829

Creation date: 2024-06-27T20:33:14.757923
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/AS1A10_109T01_9000004646_31829cztM0_level2.evt modeM0/AS1A10_109T01_9000004646_31829cztM0_level2_quad_clean.evt
Size (bytes)618,451,200102,188,160
Size589.8 MB 97.5 MB
Events in quadrant A3,710,454690,409
Events in quadrant B5,706,625673,275
Events in quadrant C4,703,984638,976
Events in quadrant D4,167,753636,789

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152412
B0215152
C0183212
D0166662

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65301121.715161%
B65302784.257274%
C65304456.814701%
D6531941.439290%

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 8895 6532 0 0 0.00% 0.00%
B 8895 6532 52 52 0.58% 0.80%
C 8895 6532 135 135 1.52% 2.07%
D 8896 6533 9 9 0.10% 0.14%

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 10860 52.6 960 948 188.5
A 3 137 8836 41.86 960 948 188.5
A 0 226 8179 38.37 960 948 188.5
B 6 159 1716277 9909.73 925 906 173.1
B 10 245 287092 1653.3 925 906 173.1
B 0 183 67953 387.33 925 906 173.1
C 0 10 574219 2857.42 875 885 200.6
C 3 233 484179 2408.67 875 885 200.6
C 14 238 159895 792.48 875 885 200.6
D 8 195 517074 2432.26 915 896 212.2
D 2 250 85857 400.34 915 896 212.2
D 13 174 60807 282.3 915 896 212.2

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