ASTROSAT CZTI

Data Quality Report

Orbit 04361

Creation date: 2024-06-27T14:40:55.137894
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/AS1G05_167T01_9000000542_04361cztM0_level2.evt modeM0/AS1G05_167T01_9000000542_04361cztM0_level2_quad_clean.evt
Size (bytes)554,664,960100,491,840
Size529.0 MB 95.8 MB
Events in quadrant A3,860,105645,364
Events in quadrant B3,876,545638,207
Events in quadrant C4,740,550612,845
Events in quadrant D3,793,263606,451

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166583
B0166582
C0192162
D0168792

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77701582.033462%
B77701712.200772%
C77703604.633205%
D77701411.814672%

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 7875 7771 6 6 0.08% 0.08%
B 7875 7770 14 14 0.18% 0.18%
C 7875 7770 228 228 2.90% 2.93%
D 7875 7770 31 31 0.39% 0.40%

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 13 251 149123 755.64 953 933 196.1
A 15 234 22400 109.46 953 933 196.1
A 8 15 13968 66.47 953 933 196.1
B 4 48 61235 325.93 958 938 185.0
B 15 204 49600 263.04 958 938 185.0
B 14 167 38346 202.21 958 938 185.0
C 9 247 1112000 5129.76 917 922 216.6
C 9 16 27349 122.01 917 922 216.6
C 10 65 20666 91.16 917 922 216.6
D 13 239 76949 339.17 926 899 224.2
D 13 223 47136 206.21 926 899 224.2
D 2 37 34288 148.91 926 899 224.2

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