ASTROSAT CZTI

Data Quality Report

Orbit 24481

Creation date: 2024-06-27T19:06:26.654990
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/AS1T03_183T01_9000003606_24481cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24481cztM0_level2_quad_clean.evt
Size (bytes)652,006,080137,280,960
Size621.8 MB 130.9 MB
Events in quadrant A4,541,320923,905
Events in quadrant B3,811,947948,138
Events in quadrant C3,855,400894,222
Events in quadrant D6,992,104831,606

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187583
B0166163
C0166703
D0262993

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80541531.899677%
B80551591.973929%
C80551942.408442%
D80556578.156425%

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 8839 8057 0 0 0.00% 0.00%
B 8840 8058 1 1 0.01% 0.01%
C 8840 8058 0 0 0.00% 0.00%
D 8840 8058 503 503 5.69% 6.24%

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 14 111 834100 4347.49 952 933 191.6
A 4 2 29992 151.63 952 933 191.6
A 13 254 12288 59.25 952 933 191.6
B 3 64 29660 157.07 961 935 182.9
B 12 111 22806 119.59 961 935 182.9
B 11 111 19893 103.66 961 935 182.9
C 14 238 146665 682.49 917 919 213.5
C 7 247 73779 341.18 917 919 213.5
C 2 16 56344 259.54 917 919 213.5
D 8 195 1599814 7332.42 895 865 218.1
D 12 218 1290383 5913.44 895 865 218.1
D 1 52 512245 2345.07 895 865 218.1

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