ASTROSAT CZTI

Data Quality Report

Orbit 07023

Creation date: 2024-06-27T15:14:35.519825
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_026T01_9000000962_07023cztM0_level2.evt modeM0/AS1G06_026T01_9000000962_07023cztM0_level2_quad_clean.evt
Size (bytes)486,233,28085,904,640
Size463.7 MB 81.9 MB
Events in quadrant A3,355,330527,456
Events in quadrant B3,572,067530,995
Events in quadrant C3,304,495524,535
Events in quadrant D3,995,868508,603

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151183
B0155122
C0151132
D0167652

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73321261.718494%
B73321301.773050%
C7332761.036552%
D73322012.741408%

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 7882 7333 0 0 0.00% 0.00%
B 7882 7333 1 1 0.01% 0.01%
C 7882 7333 0 0 0.00% 0.00%
D 7882 7333 105 105 1.33% 1.43%

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 15 234 12823 67.78 864 842 176.8
A 0 226 8310 42.25 864 842 176.8
A 13 14 8309 42.24 864 842 176.8
B 0 214 108043 649.45 867 844 165.1
B 0 228 35958 212.73 867 844 165.1
B 4 173 19626 113.79 867 844 165.1
C 12 4 9915 46.44 842 843 195.4
C 13 61 6691 29.94 842 843 195.4
C 10 22 3251 12.33 842 843 195.4
D 1 18 262544 1287.19 840 813 203.3
D 8 195 223546 1095.4 840 813 203.3
D 2 136 153189 749.39 840 813 203.3

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