ASTROSAT CZTI

Data Quality Report

Orbit 34992

Creation date: 2022-03-19T21:48:51.190778
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/AS1A10_123T11_9000005014_34992cztM0_level2.evt modeM0/AS1A10_123T11_9000005014_34992cztM0_level2_quad_clean.evt
Size (bytes)507,297,60071,648,640
Size483.8 MB 68.3 MB
Events in quadrant A4,903,171386,710
Events in quadrant B2,739,643470,884
Events in quadrant C3,153,255466,758
Events in quadrant D4,169,550435,005

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183143
B0119852
C0130602
D0165612

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A586691815.649506%
B5866130.221616%
C5866340.579611%
D58661282.182066%

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 7180 5867 851 851 11.85% 14.50%
B 7180 5867 5 5 0.07% 0.09%
C 7180 5867 29 29 0.40% 0.49%
D 7180 5867 111 111 1.55% 1.89%

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 15 169 2402504 19387.28 614 602 123.9
A 10 83 60354 482.3 614 602 123.9
A 9 143 52841 421.65 614 602 123.9
B 5 172 40881 311.49 668 651 129.2
B 4 232 17242 128.46 668 651 129.2
B 12 111 16345 121.52 668 651 129.2
C 15 214 244074 1601.52 652 655 152.0
C 15 159 185099 1213.51 652 655 152.0
C 0 10 132823 869.57 652 655 152.0
D 8 195 1004587 6365.58 648 629 157.7
D 13 249 242522 1533.72 648 629 157.7
D 12 217 211014 1333.94 648 629 157.7

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