ASTROSAT CZTI

Data Quality Report

Orbit 44656

Creation date: 2024-06-27T23:04:58.528568
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_072T01_9000006008_44656cztM0_level2.fits modeM0/AS1A13_072T01_9000006008_44656cztM0_level2_quad_clean.evt
Size (bytes)1,023,456,960222,952,320
Size976.0 MB 212.6 MB
Events in quadrant A11,901,0351,482,924
Events in quadrant B6,651,2091,545,637
Events in quadrant C6,687,4641,463,708
Events in quadrant D11,529,1091,261,780

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0471401
B0302151
C0306591
D0442961

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02900
B02900
C02900
D02900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A144274563.160740%
B144272781.926943%
C144281661.150541%
D1442711267.804810%

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 14812 14428 54 54 0.36% 0.37%
B 14812 14428 17 17 0.11% 0.12%
C 14813 14429 42 42 0.28% 0.29%
D 14812 14428 904 904 6.10% 6.27%

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 3775648 11581.6 1575 1544 325.9
A 15 223 1761714 5401.44 1575 1544 325.9
A 13 248 126104 382.24 1575 1544 325.9
B 0 183 123773 395.43 1573 1522 309.2
B 0 186 122703 391.96 1573 1522 309.2
B 5 172 66498 210.17 1573 1522 309.2
C 12 2 314873 874.47 1543 1548 358.3
C 14 254 183519 507.87 1543 1548 358.3
C 2 14 57297 155.59 1543 1548 358.3
D 1 52 2105431 5528.22 1510 1461 380.6
D 13 249 1136481 2982.28 1510 1461 380.6
D 13 153 694836 1821.85 1510 1461 380.6

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