ASTROSAT CZTI

Data Quality Report

Orbit 17577

Creation date: 2024-06-27T17:38:12.793535
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/AS1A05_056T01_9000002604_17577cztM0_level2.evt modeM0/AS1A05_056T01_9000002604_17577cztM0_level2_quad_clean.evt
Size (bytes)508,999,680100,131,840
Size485.4 MB 95.5 MB
Events in quadrant A3,924,898641,489
Events in quadrant B3,630,787639,900
Events in quadrant C3,814,322611,510
Events in quadrant D3,532,940615,093

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166083
B0157772
C0162482
D0158312

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75341672.216618%
B75351221.619111%
C75351512.003981%
D7535480.637027%

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 8139 7537 44 44 0.54% 0.58%
B 8140 7538 0 0 0.00% 0.00%
C 8140 7538 0 0 0.00% 0.00%
D 8140 7538 9 9 0.11% 0.12%

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 14 237 378541 1999.57 923 902 188.9
A 0 226 8075 37.98 923 902 188.9
A 3 137 7268 33.71 923 902 188.9
B 0 230 28703 155.04 918 892 179.4
B 12 111 21952 117.4 918 892 179.4
B 11 111 19010 101.0 918 892 179.4
C 3 233 269472 1304.45 872 878 205.9
C 14 238 134819 650.5 872 878 205.9
C 0 207 9323 41.01 872 878 205.9
D 13 189 116756 528.03 894 866 219.5
D 2 234 29619 131.01 894 866 219.5
D 5 222 25792 113.57 894 866 219.5

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