ASTROSAT CZTI

Data Quality Report

Orbit 52340

Creation date: 2025-07-22T19:22:35.742293
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/AS1C09_011T05_9000006474_52340cztM0_level2.fits modeM0/AS1C09_011T05_9000006474_52340cztM0_level2_quad_clean.evt
Size (bytes)906,575,04085,305,600
Size864.6 MB 81.4 MB
Events in quadrant A3,492,140739,353
Events in quadrant B5,866,474678,761
Events in quadrant C13,441,779273,839
Events in quadrant D10,243,145425,839

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015706276
B022557472
C045268762
D035634558

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01382
B01382
C01382
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66712303.447759%
B66685067.588482%
C6665423263.495874%
D6659206931.070731%

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 7188 6687 39 39 0.54% 0.58%
B 7191 6692 260 260 3.62% 3.89%
C 7113 6682 3658 3658 51.43% 54.74%
D 7196 6683 1884 1884 26.18% 28.19%

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 8 20 108754 568.75 718 700 190.0
A 3 114 70348 366.6 718 700 190.0
A 3 14 49769 258.28 718 700 190.0
B 4 170 1996377 13768.46 670 648 144.9
B 0 216 401741 2767.13 670 648 144.9
B 0 213 115635 793.29 670 648 144.9
C 15 248 4304205 31585.99 464 456 136.3
C 15 224 4008595 29416.45 464 456 136.3
C 15 178 2240402 16439.37 464 456 136.3
D 6 42 3901983 21419.02 606 578 182.1
D 15 78 857443 4704.26 606 578 182.1
D 15 93 673916 3696.68 606 578 182.1

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