ASTROSAT CZTI

Data Quality Report

Orbit 47557

Creation date: 2024-07-14T14:34:12.546680
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/AS1C09_002T01_9000006334_47557cztM0_level2.fits modeM0/AS1C09_002T01_9000006334_47557cztM0_level2_quad_clean.evt
Size (bytes)945,074,880217,834,560
Size901.3 MB 207.7 MB
Events in quadrant A13,529,6311,441,973
Events in quadrant B7,778,6841,435,740
Events in quadrant C6,109,4221,439,435
Events in quadrant D6,498,4401,324,772

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0498553
B0325853
C0284823
D0293683

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02820
B02820
C02820
D02820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A137953982.885103%
B137956334.588619%
C137951220.884378%
D137951250.906125%

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 14325 13796 12 12 0.08% 0.09%
B 14325 13796 413 413 2.88% 2.99%
C 14325 13797 15 15 0.10% 0.11%
D 14325 13798 38 38 0.27% 0.28%

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 7319688 23081.34 1524 1488 317.1
A 9 191 311150 976.66 1524 1488 317.1
A 13 254 19993 58.36 1524 1488 317.1
B 0 200 947470 3214.23 1502 1453 294.3
B 5 32 591747 2005.61 1502 1453 294.3
B 0 198 103880 348.01 1502 1453 294.3
C 14 254 158182 443.28 1513 1519 353.4
C 1 3 46175 126.35 1513 1519 353.4
C 13 61 10187 24.53 1513 1519 353.4
D 2 249 159630 417.59 1512 1462 378.8
D 12 233 156440 409.17 1512 1462 378.8
D 11 192 89580 232.65 1512 1462 378.8

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