ASTROSAT CZTI

Data Quality Report

Orbit 22728

Creation date: 2024-06-27T18:44:55.195244
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/AS1A08_007T01_9000003362_22728cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22728cztM0_level2_quad_clean.evt
Size (bytes)501,445,44082,258,560
Size478.2 MB 78.4 MB
Events in quadrant A3,419,905513,993
Events in quadrant B3,573,507513,147
Events in quadrant C3,490,099490,024
Events in quadrant D4,225,686484,470

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145352
B0149293
C0147852
D0170842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7020881.253561%
B70191121.595669%
C70191321.880610%
D70191872.664197%

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 7800 7022 0 0 0.00% 0.00%
B 7799 7021 1 1 0.01% 0.01%
C 7799 7021 11 11 0.14% 0.16%
D 7799 7021 93 93 1.19% 1.32%

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 12391 65.55 883 863 175.9
A 10 17 10736 56.14 883 863 175.9
A 0 226 7894 39.98 883 863 175.9
B 0 245 44541 267.3 875 855 163.4
B 0 190 42842 256.91 875 855 163.4
B 0 228 28630 169.95 875 855 163.4
C 14 238 133579 682.43 839 844 194.5
C 10 22 41120 207.07 839 844 194.5
C 10 23 40126 201.96 839 844 194.5
D 1 52 459588 2203.41 858 834 208.2
D 12 233 205514 983.09 858 834 208.2
D 13 172 147877 706.25 858 834 208.2

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