ASTROSAT CZTI

Data Quality Report

Orbit 04275

Creation date: 2024-06-27T14:39:42.533985
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_240T01_9000000536_04275cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04275cztM0_level2_quad_clean.evt
Size (bytes)1,041,284,160133,824,960
Size993.0 MB 127.6 MB
Events in quadrant A6,735,799819,611
Events in quadrant B8,353,297807,822
Events in quadrant C5,518,701798,149
Events in quadrant D10,079,211758,603

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0285185
B0334725
C0257222
D0386905

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A125615094.052225%
B125604723.757962%
C125621311.042828%
D125615284.203487%

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 12912 12565 267 267 2.07% 2.12%
B 12912 12564 82 82 0.64% 0.65%
C 12912 12565 0 0 0.00% 0.00%
D 12912 12564 293 293 2.27% 2.33%

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 0 50 829938 2832.99 1423 1390 292.5
A 8 15 361606 1231.66 1423 1390 292.5
A 0 199 35640 117.11 1423 1390 292.5
B 3 0 2027602 7258.72 1443 1408 279.1
B 10 16 405376 1447.19 1443 1408 279.1
B 14 167 129518 458.94 1443 1408 279.1
C 9 144 29516 86.18 1401 1406 326.2
C 10 65 11629 31.34 1401 1406 326.2
C 13 61 11592 31.23 1401 1406 326.2
D 11 132 2769659 8161.73 1381 1336 339.2
D 2 232 1128557 3323.34 1381 1336 339.2
D 1 52 353809 1039.18 1381 1336 339.2

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