ASTROSAT CZTI

Data Quality Report

Orbit 11815

Creation date: 2024-06-27T16:18:39.844480
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/AS1A04_022T04_9000001746_11815cztM0_level2.evt modeM0/AS1A04_022T04_9000001746_11815cztM0_level2_quad_clean.evt
Size (bytes)584,665,92088,260,480
Size557.6 MB 84.2 MB
Events in quadrant A3,787,087538,368
Events in quadrant B4,844,109532,576
Events in quadrant C3,571,054546,882
Events in quadrant D4,974,515511,602

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164943
B0194702
C0161402
D0200752

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78102673.418694%
B78104505.761844%
C78101101.408451%
D78103474.443022%

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 7826 7812 0 0 0.00% 0.00%
B 7826 7812 126 126 1.61% 1.61%
C 7826 7812 0 0 0.00% 0.00%
D 7826 7812 217 217 2.77% 2.78%

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 1 162 88609 461.87 927 906 189.9
A 1 178 43788 225.83 927 906 189.9
A 1 161 39051 200.88 927 906 189.9
B 4 239 659234 3747.68 924 897 175.7
B 10 16 300284 1704.3 924 897 175.7
B 3 64 121641 687.35 924 897 175.7
C 8 128 10621 45.8 909 911 212.0
C 8 112 6996 28.7 909 911 212.0
C 13 61 6893 28.22 909 911 212.0
D 1 52 698700 3185.29 898 868 219.1
D 12 17 228382 1038.5 898 868 219.1
D 8 195 154691 702.13 898 868 219.1

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