ASTROSAT CZTI

Data Quality Report

Orbit 53474

Creation date: 2025-08-17T04:24:10.237825
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/AS1A14_002T06_9000006496_53474cztM0_level2.fits modeM0/AS1A14_002T06_9000006496_53474cztM0_level2_quad_clean.evt
Size (bytes)1,011,360,96087,788,160
Size964.5 MB 83.7 MB
Events in quadrant A11,161,477533,933
Events in quadrant B3,876,553805,866
Events in quadrant C17,620,421138,542
Events in quadrant D4,194,934654,391

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0384111
B0167681
C0573991
D0180681

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7543253933.660347%
B75431211.604136%
C7544627583.178685%
D75441271.683457%

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 7602 7542 2080 2080 27.36% 27.58%
B 7603 7544 21 21 0.28% 0.28%
C 7603 7543 5899 5899 77.59% 78.20%
D 7604 7545 100 100 1.32% 1.33%

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 3 62 4547828 25492.86 726 708 178.4
A 3 63 1862531 10438.08 726 708 178.4
A 15 174 1514451 8486.61 726 708 178.4
B 4 216 162604 901.1 841 812 179.6
B 5 185 72930 401.66 841 812 179.6
B 4 171 59337 325.95 841 812 179.6
C 1 241 10032354 90361.12 402 399 111.0
C 15 224 2033657 18314.22 402 399 111.0
C 7 64 1989768 17918.9 402 399 111.0
D 15 42 304748 1318.0 815 779 230.6
D 13 153 165066 712.34 815 779 230.6
D 3 12 147003 634.02 815 779 230.6

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