ASTROSAT CZTI

Data Quality Report

Orbit 24518

Creation date: 2024-06-27T19:06:49.048580
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_24518cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24518cztM0_level2_quad_clean.evt
Size (bytes)740,246,400130,636,800
Size706.0 MB 124.6 MB
Events in quadrant A3,581,994968,275
Events in quadrant B9,059,681776,777
Events in quadrant C3,372,899921,626
Events in quadrant D5,979,028849,691

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148931
B0312957
C0141211
D0220201

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6293741.175910%
B6293241338.344192%
C6293991.573177%
D62934396.976005%

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 7508 6294 1 1 0.01% 0.02%
B 7508 6294 1753 1753 23.35% 27.85%
C 7508 6294 6 6 0.08% 0.10%
D 7508 6294 418 418 5.57% 6.64%

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 313512 1884.33 840 827 165.9
A 6 16 23380 135.91 840 827 165.9
A 13 254 9890 54.62 840 827 165.9
B 3 64 6133066 49186.73 681 667 124.7
B 12 17 160779 1284.22 681 667 124.7
B 5 172 42114 332.43 681 667 124.7
C 14 238 129801 722.81 784 789 178.5
C 10 9 123576 687.93 784 789 178.5
C 2 16 52825 291.54 784 789 178.5
D 1 52 2909649 15844.33 765 744 183.6
D 8 195 98552 532.74 765 744 183.6
D 9 1 35666 190.21 765 744 183.6

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