ASTROSAT CZTI

Data Quality Report

Orbit 06778

Creation date: 2024-06-27T15:11:35.443684
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/AS1G06_086T02_9000000936_06778cztM0_level2.evt modeM0/AS1G06_086T02_9000000936_06778cztM0_level2_quad_clean.evt
Size (bytes)605,669,760105,500,160
Size577.6 MB 100.6 MB
Events in quadrant A4,635,144654,220
Events in quadrant B4,016,208672,561
Events in quadrant C3,983,872659,505
Events in quadrant D5,137,626624,808

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197323
B0177732
C0178132
D0213362

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84121631.937708%
B8412810.962910%
C8412490.582501%
D84121601.902045%

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 9032 8415 161 161 1.78% 1.91%
B 9032 8415 3 3 0.03% 0.04%
C 9032 8415 11 11 0.12% 0.13%
D 9032 8415 70 70 0.78% 0.83%

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 13 170 792358 3867.35 990 966 204.6
A 0 23 20500 95.46 990 966 204.6
A 13 248 13822 62.82 990 966 204.6
B 4 48 53799 267.85 1007 982 197.2
B 0 214 41331 204.62 1007 982 197.2
B 4 81 20156 97.24 1007 982 197.2
C 9 247 167856 732.18 971 976 227.9
C 12 4 9994 39.57 971 976 227.9
C 4 254 9859 38.97 971 976 227.9
D 8 195 1022540 4299.11 957 927 237.6
D 2 152 182866 765.63 957 927 237.6
D 2 63 173901 727.9 957 927 237.6

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