ASTROSAT CZTI

Data Quality Report

Orbit 40452

Creation date: 2024-06-27T22:16:17.435395
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/AS1A12_022T01_9000005540_40452cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40452cztM0_level2_quad_clean.evt
Size (bytes)407,848,320112,593,600
Size389.0 MB 107.4 MB
Events in quadrant A3,576,433771,072
Events in quadrant B3,359,919789,813
Events in quadrant C3,482,308761,904
Events in quadrant D4,126,480593,642

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151123
B0148582
C0149892
D0172002

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7080180.254237%
B7080280.395480%
C7080290.409605%
D7080125517.725989%

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 9707 7082 5 5 0.05% 0.07%
B 9707 7082 8 8 0.08% 0.11%
C 9707 7082 25 25 0.26% 0.35%
D 9707 7082 125 125 1.29% 1.77%

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 10 83 568747 3646.81 765 751 155.8
A 7 3 19592 120.97 765 751 155.8
A 12 189 13070 79.09 765 751 155.8
B 3 112 144934 987.21 756 734 146.1
B 4 171 119069 810.14 756 734 146.1
B 0 230 93031 631.88 756 734 146.1
C 15 214 299579 1719.79 745 750 173.8
C 14 254 267804 1536.92 745 750 173.8
C 13 61 4931 24.06 745 750 173.8
D 12 227 486608 2941.98 674 654 165.2
D 12 128 295793 1786.78 674 654 165.2
D 12 191 277683 1677.14 674 654 165.2

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