ASTROSAT CZTI

Data Quality Report

Orbit 20210713_A10_053T30_9000004536_level2

Creation date: 2025-12-27T10:11:40.811973
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_053T30_9000004536cztM0_level2.fits modeM0/AS1A10_053T30_9000004536cztM0_level2_quad_clean.evt
Size (bytes)405,365,760260,493,120
Size386.6 MB 248.4 MB
Events in quadrant A2,575,2781,358,373
Events in quadrant B2,343,3661,322,064
Events in quadrant C2,425,2501,284,772
Events in quadrant D2,207,9641,197,148

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0828630
B01313020
C0947960
D0925580

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08080
B08080
C08080
D08080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A396781850.466253%
B3967816804.234084%
C3967811622.928575%
D396782360.594788%

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 46473 39678 0 0 0.00% 0.00%
B 46473 39674 0 0 0.00% 0.00%
C 46473 39675 0 0 0.00% 0.00%
D 46473 39676 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 2457 11.21 670 630 162.9
A 7 110 1951 8.11 670 630 162.9
A 9 19 1938 8.03 670 630 162.9
B 2 9 1866 10.29 619 594 123.6
B 5 225 1605 8.18 619 594 123.6
B 3 17 1554 7.77 619 594 123.6
C 1 81 1953 8.26 641 601 163.8
C 1 80 1867 7.73 641 601 163.8
C 12 241 1671 6.53 641 601 163.8
D 7 3 1574 5.98 630 577 166.7
D 6 231 1574 5.98 630 577 166.7
D 3 14 1558 5.89 630 577 166.7

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