ASTROSAT CZTI

Data Quality Report

Orbit 42309

Creation date: 2024-06-27T22:38:05.829872
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/AS1P01_999T99_9000005772_42309cztM0_level2.fits modeM0/AS1P01_999T99_9000005772_42309cztM0_level2_quad_clean.evt
Size (bytes)531,506,880136,163,520
Size506.9 MB 129.9 MB
Events in quadrant A4,583,391910,852
Events in quadrant B4,381,332917,668
Events in quadrant C3,973,560894,269
Events in quadrant D6,074,422807,703

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183942
B0189582
C0172052
D0240922

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8524330.387142%
B85241842.158611%
C852540.046921%
D85253273.835777%

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 11449 8526 17 17 0.15% 0.20%
B 11449 8526 146 146 1.28% 1.71%
C 11450 8527 0 0 0.00% 0.00%
D 11450 8527 285 285 2.49% 3.34%

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 10 83 809408 4183.33 943 924 193.3
A 15 235 45767 232.03 943 924 193.3
A 13 248 28814 144.31 943 924 193.3
B 4 81 356179 1994.94 923 895 178.1
B 4 171 179716 1004.09 923 895 178.1
B 3 112 86268 479.37 923 895 178.1
C 15 214 355647 1660.39 917 922 213.6
C 15 159 25433 114.73 917 922 213.6
C 12 249 8704 36.43 917 922 213.6
D 1 52 1309054 5855.12 912 886 223.4
D 12 233 604344 2700.97 912 886 223.4
D 2 16 153945 685.06 912 886 223.4

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