ASTROSAT CZTI

Data Quality Report

Orbit 23101

Creation date: 2024-06-27T18:49:45.252401
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/AS1A07_049T01_9000003408_23101cztM0_level2.evt modeM0/AS1A07_049T01_9000003408_23101cztM0_level2_quad_clean.evt
Size (bytes)570,234,24087,324,480
Size543.8 MB 83.3 MB
Events in quadrant A3,061,815572,846
Events in quadrant B3,002,300597,574
Events in quadrant C3,216,704569,430
Events in quadrant D7,597,457500,862

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128292
B0125152
C0131742
D0265472

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5770320.554593%
B5770350.606586%
C5770791.369151%
D5770172929.965338%

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 7090 5771 9 9 0.13% 0.16%
B 7090 5771 2 2 0.03% 0.03%
C 7090 5771 9 9 0.13% 0.16%
D 7090 5771 1544 1544 21.78% 26.75%

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 6 16 152770 1018.3 754 741 149.3
A 13 254 8805 54.01 754 741 149.3
A 0 226 6592 39.19 754 741 149.3
B 12 111 16632 112.61 759 742 141.1
B 4 216 15527 104.78 759 742 141.1
B 11 111 14561 97.93 759 742 141.1
C 14 238 118991 692.06 740 747 170.9
C 9 15 102855 597.62 740 747 170.9
C 0 10 46128 265.61 740 747 170.9
D 1 52 4671669 30190.87 636 620 154.7
D 12 233 323888 2089.41 636 620 154.7
D 12 227 35411 224.87 636 620 154.7

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