ASTROSAT CZTI

Data Quality Report

Orbit 20195

Creation date: 2024-06-27T18:12:18.599404
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/AS1C04_001T01_9000002994_20195cztM0_level2.evt modeM0/AS1C04_001T01_9000002994_20195cztM0_level2_quad_clean.evt
Size (bytes)1,186,856,640322,202,880
Size1.1 GB 307.3 MB
Events in quadrant A7,839,5962,233,889
Events in quadrant B8,763,5432,213,722
Events in quadrant C7,924,9922,127,256
Events in quadrant D10,314,9842,061,903

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03300
B03300
C03300
D03300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0336933
B0363365
C0336013
D0413193

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A162872991.835820%
B162874122.529625%
C162883031.860265%
D162888415.163310%

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 19242 16291 16 16 0.08% 0.10%
B 19243 16292 80 80 0.42% 0.49%
C 19243 16292 0 0 0.00% 0.00%
D 19243 16292 482 482 2.50% 2.96%

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 4 2 47841 113.98 2004 1959 402.5
A 14 238 45634 108.5 2004 1959 402.5
A 13 254 19132 42.66 2004 1959 402.5
B 7 220 589673 1600.83 1973 1923 367.2
B 0 197 227194 613.56 1973 1923 367.2
B 0 190 90308 240.73 1973 1923 367.2
C 14 238 298390 679.24 1905 1911 436.5
C 3 233 179497 406.85 1905 1911 436.5
C 1 16 17164 34.95 1905 1911 436.5
D 9 1 1122247 2416.08 1923 1867 463.7
D 11 176 582387 1251.88 1923 1867 463.7
D 7 38 420749 903.31 1923 1867 463.7

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