ASTROSAT CZTI

Data Quality Report

Orbit 20210103_A10_110T04_9000004094_level2

Creation date: 2025-12-18T21:31:35.413531
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_110T04_9000004094cztM0_level2.fits modeM0/AS1A10_110T04_9000004094cztM0_level2_quad_clean.evt
Size (bytes)546,710,400447,082,560
Size521.4 MB 426.4 MB
Events in quadrant A3,496,7062,652,342
Events in quadrant B3,139,9982,517,614
Events in quadrant C3,468,5122,569,381
Events in quadrant D2,739,3282,093,791

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240620
B01751610
C01182610
D02114160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011000
B011000
C011000
D011000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5399713532.505695%
B53997735013.611867%
C5399713032.413097%
D539971045119.354779%

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 63326 53980 0 0 0.00% 0.00%
B 63326 53765 0 0 0.00% 0.00%
C 63326 53986 0 0 0.00% 0.00%
D 63326 53505 0 0 0.00% 0.00%

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 0 29 3349 11.38 911 859 218.8
A 7 110 2742 8.61 911 859 218.8
A 9 19 2578 7.86 911 859 218.8
B 2 9 2516 10.66 830 794 161.6
B 2 8 2079 7.95 830 794 161.6
B 5 128 2040 7.71 830 794 161.6
C 1 81 2694 8.04 918 866 227.4
C 1 80 2667 7.92 918 866 227.4
C 12 241 2356 6.55 918 866 227.4
D 6 67 1976 6.13 782 715 205.8
D 15 47 1901 5.76 782 715 205.8
D 10 189 1892 5.72 782 715 205.8

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