ASTROSAT CZTI

Data Quality Report

Orbit 47276

Creation date: 2024-06-27T23:33:38.214091
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/AS1A13_025T01_9000006312_47276cztM0_level2.fits modeM0/AS1A13_025T01_9000006312_47276cztM0_level2_quad_clean.evt
Size (bytes)1,905,370,560340,223,040
Size1.8 GB 324.5 MB
Events in quadrant A24,409,0322,238,743
Events in quadrant B11,572,8332,471,151
Events in quadrant C10,023,5072,345,643
Events in quadrant D22,829,9921,730,513

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0352
B0352
C0354
D0355

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010228214878
B0564457122
C0533037181
D09521212040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050757
B050763
C050963
D050852

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2169614866.849189%
B221694642.093013%
C221821030.464340%
D21874308114.085215%

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 29999 22201 337 337 1.12% 1.52%
B 30092 22691 102 102 0.34% 0.45%
C 30105 22714 14 14 0.05% 0.06%
D 30094 22432 2851 2851 9.47% 12.71%

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 10 83 11478669 22662.99 2445 2392 506.4
A 9 191 3427553 6763.9 2445 2392 506.4
A 13 254 32208 58.88 2445 2392 506.4
B 0 200 747777 1490.75 2543 2459 500.0
B 5 32 289448 574.02 2543 2459 500.0
B 0 190 96165 187.43 2543 2459 500.0
C 3 233 134865 226.37 2486 2498 584.7
C 14 254 109651 183.25 2486 2498 584.7
C 1 3 42366 68.18 2486 2498 584.7
D 6 112 11579097 19553.01 2356 2280 592.1
D 1 47 682162 1148.31 2356 2280 592.1
D 8 176 436352 733.14 2356 2280 592.1

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