ASTROSAT CZTI

Data Quality Report

Orbit 19008

Creation date: 2024-06-27T17:58:01.724750
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/AS1A06_003T05_9000002830_19008cztM0_level2.evt modeM0/AS1A06_003T05_9000002830_19008cztM0_level2_quad_clean.evt
Size (bytes)646,813,44077,362,560
Size616.8 MB 73.8 MB
Events in quadrant A5,928,475455,270
Events in quadrant B3,753,690486,970
Events in quadrant C3,641,262463,923
Events in quadrant D5,780,632437,828

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222222
B0154792
C0150842
D0219892

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7160101514.175978%
B71612132.974445%
C71612042.848764%
D71615878.197179%

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 7730 7160 582 582 7.53% 8.13%
B 7731 7162 8 8 0.10% 0.11%
C 7731 7162 1 1 0.01% 0.01%
D 7731 7162 390 390 5.04% 5.45%

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 14 235 2644481 15367.31 847 827 172.0
A 9 143 11968 64.76 847 827 172.0
A 8 205 8670 45.59 847 827 172.0
B 3 112 152921 883.45 895 871 172.1
B 7 220 28331 159.55 895 871 172.1
B 15 201 25152 141.08 895 871 172.1
C 3 233 160653 797.85 854 859 200.3
C 14 238 133678 663.16 854 859 200.3
C 0 207 6328 27.31 854 859 200.3
D 7 238 1346441 6488.01 850 826 207.4
D 2 233 662563 3190.63 850 826 207.4
D 1 52 533093 2566.37 850 826 207.4

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