ASTROSAT CZTI

Data Quality Report

Orbit 09427

Creation date: 2024-06-27T15:45:49.303928
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/AS1A02_178T01_9000001340_09427cztM0_level2.evt modeM0/AS1A02_178T01_9000001340_09427cztM0_level2_quad_clean.evt
Size (bytes)1,578,974,400203,362,560
Size1.5 GB 193.9 MB
Events in quadrant A9,000,6511,299,250
Events in quadrant B8,358,9341,317,865
Events in quadrant C20,803,7991,071,475
Events in quadrant D8,478,3631,267,869

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037026
B037016
C037010
D037014

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0408672548
B0383251738
C0766732664
D0391581988

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151
B0150
C0152
D0151

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A173711460.840481%
B174881040.594694%
C17392579533.319917%
D17435670.384284%

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 19772 18013 35 35 0.18% 0.19%
B 19772 18102 15 15 0.08% 0.08%
C 19772 18027 3997 3997 20.22% 22.17%
D 19772 18078 30 30 0.15% 0.17%

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 8 5 883603 2169.52 2013 1971 406.4
A 4 2 203097 494.93 2013 1971 406.4
A 1 162 55965 132.87 2013 1971 406.4
B 0 214 107889 275.96 2031 1984 383.8
B 0 219 74428 188.77 2031 1984 383.8
B 4 80 59777 150.59 2031 1984 383.8
C 4 254 14718184 42064.04 1522 1528 349.9
C 9 68 104836 295.28 1522 1528 349.9
C 14 234 34692 94.79 1522 1528 349.9
D 8 195 563919 1165.99 1942 1894 482.0
D 7 71 155951 319.61 1942 1894 482.0
D 1 52 124541 254.45 1942 1894 482.0

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