ASTROSAT CZTI

Data Quality Report

Orbit 27978

Creation date: 2024-06-27T19:46:40.894722
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/AS1A10_065T03_9000004040_27978cztM0_level2.evt modeM0/AS1A10_065T03_9000004040_27978cztM0_level2_quad_clean.evt
Size (bytes)603,146,88067,034,880
Size575.2 MB 63.9 MB
Events in quadrant A3,514,839413,940
Events in quadrant B3,562,287414,246
Events in quadrant C4,620,690386,547
Events in quadrant D6,141,234373,889

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143510
B0145550
C0180380
D0226180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6317781.234763%
B6317911.440557%
C63165448.613046%
D63165508.708043%

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 7582 6317 1 1 0.01% 0.02%
B 7582 6317 1 1 0.01% 0.02%
C 7581 6316 291 291 3.84% 4.61%
D 7581 6316 540 540 7.12% 8.55%

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 1 113 10258 52.22 904 889 179.4
A 13 254 9556 48.3 904 889 179.4
A 8 192 8746 43.79 904 889 179.4
B 12 111 20291 114.4 903 882 169.7
B 11 111 18274 102.51 903 882 169.7
B 14 111 17782 99.61 903 882 169.7
C 2 16 1169513 5956.73 849 858 196.2
C 14 238 136801 692.91 849 858 196.2
C 3 233 9073 41.87 849 858 196.2
D 1 52 1690500 8461.97 859 842 199.7
D 8 195 1140546 5707.75 859 842 199.7
D 7 238 40782 200.02 859 842 199.7

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