ASTROSAT CZTI

Data Quality Report

Orbit 23873

Creation date: 2024-06-27T18:59:37.511810
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/AS1A07_001T01_9000003538_23873cztM0_level2.evt modeM0/AS1A07_001T01_9000003538_23873cztM0_level2_quad_clean.evt
Size (bytes)534,251,520150,431,040
Size509.5 MB 143.5 MB
Events in quadrant A3,657,8411,021,974
Events in quadrant B3,806,5821,035,640
Events in quadrant C3,838,012981,373
Events in quadrant D4,334,419961,736

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163282
B0165833
C0166132
D0184822

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7989500.625861%
B7989790.988860%
C79891151.439479%
D7989961.201652%

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 8919 7991 0 0 0.00% 0.00%
B 8919 7991 6 6 0.07% 0.08%
C 8919 7991 1 1 0.01% 0.01%
D 8919 7991 39 39 0.44% 0.49%

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 13 254 13918 68.35 946 925 190.1
A 3 137 8576 40.25 946 925 190.1
A 0 226 8146 37.99 946 925 190.1
B 4 216 31802 171.94 949 925 179.6
B 0 189 25040 134.29 949 925 179.6
B 12 111 21880 116.69 949 925 179.6
C 14 238 146090 688.84 908 909 210.8
C 7 247 80093 375.7 908 909 210.8
C 0 10 71169 333.36 908 909 210.8
D 8 195 430683 1926.99 916 890 223.0
D 1 52 195354 871.89 916 890 223.0
D 7 223 101252 449.98 916 890 223.0

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