ASTROSAT CZTI

Data Quality Report

Orbit 21866

Creation date: 2024-06-27T18:33:13.140456
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_118T01_9000003232_21866cztM0_level2.evt modeM0/AS1A07_118T01_9000003232_21866cztM0_level2_quad_clean.evt
Size (bytes)605,928,96092,868,480
Size577.9 MB 88.6 MB
Events in quadrant A3,343,243663,282
Events in quadrant B3,390,513671,132
Events in quadrant C3,167,819647,181
Events in quadrant D8,005,968374,481

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141521
B0142061
C0136131
D0281861

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6527691.057147%
B6528981.501225%
C6528931.424632%
D6528257139.384191%

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 7512 6527 11 11 0.15% 0.17%
B 7513 6528 25 25 0.33% 0.38%
C 7513 6528 0 0 0.00% 0.00%
D 7513 6528 1138 1138 15.15% 17.43%

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 78782 471.04 822 806 165.5
A 4 2 56776 338.1 822 806 165.5
A 5 16 28643 168.16 822 806 165.5
B 3 64 101270 637.77 814 794 157.5
B 0 190 53314 333.37 814 794 157.5
B 12 111 18754 114.0 814 794 157.5
C 14 238 123986 676.27 780 784 182.2
C 13 61 5467 25.71 780 784 182.2
C 15 78 1986 6.6 780 784 182.2
D 1 52 5830105 40196.75 550 537 145.0
D 7 238 27704 187.33 550 537 145.0
D 2 234 17731 118.56 550 537 145.0

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