ASTROSAT CZTI

Data Quality Report

Orbit 25455

Creation date: 2024-06-27T19:17:51.087225
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/AS1A09_085T02_9000003716_25455cztM0_level2.evt modeM0/AS1A09_085T02_9000003716_25455cztM0_level2_quad_clean.evt
Size (bytes)1,382,400,000214,456,320
Size1.3 GB 204.5 MB
Events in quadrant A8,476,0101,363,672
Events in quadrant B8,440,0101,373,208
Events in quadrant C8,699,7651,317,095
Events in quadrant D15,042,4371,208,893

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0365560
B0363930
C0372280
D0569700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17870890.498041%
B178711180.660288%
C178701891.057639%
D17870256214.336877%

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 19855 17873 1 1 0.01% 0.01%
B 19856 17874 1 1 0.01% 0.01%
C 19855 17873 22 22 0.11% 0.12%
D 19855 17873 2021 2021 10.18% 11.31%

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 6 16 128282 291.9 2162 2116 432.2
A 13 254 27497 58.72 2162 2116 432.2
A 3 137 20222 41.89 2162 2116 432.2
B 12 111 51114 120.76 2135 2080 406.0
B 11 111 46183 108.62 2135 2080 406.0
B 14 111 41614 97.36 2135 2080 406.0
C 14 238 329293 684.9 2051 2065 477.8
C 7 87 276684 574.79 2051 2065 477.8
C 9 54 94571 193.62 2051 2065 477.8
D 7 238 5968007 12923.92 1905 1851 461.6
D 1 52 1292913 2796.71 1905 1851 461.6
D 8 195 189505 406.5 1905 1851 461.6

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