ASTROSAT CZTI

Data Quality Report

Orbit 33195

Creation date: 2024-06-27T20:45:56.732100
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/AS1A11_080T02_9000004768_33195cztM0_level2.evt modeM0/AS1A11_080T02_9000004768_33195cztM0_level2_quad_clean.evt
Size (bytes)394,920,00048,709,440
Size376.6 MB 46.5 MB
Events in quadrant A1,735,363311,788
Events in quadrant B4,908,684284,174
Events in quadrant C2,102,614307,144
Events in quadrant D2,950,457298,173

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A077591
B0172461
C088601
D0114561

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A386330.077660%
B3863106327.517473%
C3863932.407455%
D3863401.035465%

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 3863 3863 0 0 0.00% 0.00%
B 3863 3863 822 822 21.28% 21.28%
C 3863 3863 80 80 2.07% 2.07%
D 3863 3863 26 26 0.67% 0.67%

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 6 7478 77.33 445 434 91.1
A 13 254 6951 71.54 445 434 91.1
A 12 227 4599 45.72 445 434 91.1
B 5 200 1146828 14385.16 414 403 79.7
B 5 31 877490 11005.55 414 403 79.7
B 5 15 428058 5366.14 414 403 79.7
C 1 241 237867 2382.82 429 432 99.6
C 0 10 114597 1145.72 429 432 99.6
C 9 187 50825 505.72 429 432 99.6
D 8 195 702460 6473.27 430 420 108.5
D 2 250 175859 1617.66 430 420 108.5
D 10 203 161617 1486.34 430 420 108.5

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