ASTROSAT CZTI

Data Quality Report

Orbit 28651

Creation date: 2024-06-27T19:54:29.823886
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/AS1A10_073T08_9000004112_28651cztM0_level2.evt modeM0/AS1A10_073T08_9000004112_28651cztM0_level2_quad_clean.evt
Size (bytes)734,676,480113,451,840
Size700.6 MB 108.2 MB
Events in quadrant A4,775,861743,042
Events in quadrant B4,121,784758,350
Events in quadrant C4,037,719731,010
Events in quadrant D8,784,849658,289

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193182
B0172532
C0169913
D0315712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78355176.598596%
B78363194.070955%
C78354355.552010%
D7835121715.532865%

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 8055 7838 248 248 3.08% 3.16%
B 8056 7839 9 9 0.11% 0.11%
C 8055 7838 0 0 0.00% 0.00%
D 8055 7838 1043 1043 12.95% 13.31%

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 15 174 911963 4484.24 995 976 203.2
A 13 254 13910 63.67 995 976 203.2
A 3 137 9783 43.35 995 976 203.2
B 10 245 116062 602.01 989 963 191.2
B 5 172 33105 168.11 989 963 191.2
B 12 111 24125 121.15 989 963 191.2
C 14 238 216770 951.12 950 956 226.9
C 14 254 95954 418.67 950 956 226.9
C 7 247 14662 60.4 950 956 226.9
D 1 52 3757134 16723.9 930 904 224.6
D 8 195 1251949 5570.04 930 904 224.6
D 12 233 131288 580.51 930 904 224.6

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