ASTROSAT CZTI

Data Quality Report

Orbit 33610

Creation date: 2024-06-27T20:50:45.624727
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/AS1T04_076T01_9000004810_33610cztM0_level2.evt modeM0/AS1T04_076T01_9000004810_33610cztM0_level2_quad_clean.evt
Size (bytes)518,296,32067,245,120
Size494.3 MB 64.1 MB
Events in quadrant A2,921,511429,639
Events in quadrant B4,187,322433,355
Events in quadrant C2,939,687438,151
Events in quadrant D5,319,711394,367

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117362
B0156531
C0117991
D0192301

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4857561.152975%
B485766013.588635%
C4857621.276508%
D48574749.759111%

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 6830 4858 43 43 0.63% 0.89%
B 6830 4858 532 532 7.79% 10.95%
C 6830 4858 49 49 0.72% 1.01%
D 6830 4858 475 475 6.95% 9.78%

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 15 169 326346 2605.58 635 626 125.0
A 15 237 117874 937.92 635 626 125.0
A 13 6 17555 135.42 635 626 125.0
B 5 172 1519609 13589.75 596 583 111.8
B 5 255 207219 1848.64 596 583 111.8
B 4 81 19756 171.53 596 583 111.8
C 15 214 203487 1411.22 628 636 143.7
C 0 10 164530 1140.2 628 636 143.7
C 14 254 61371 422.53 628 636 143.7
D 7 80 904072 5757.56 602 590 156.9
D 8 195 865952 5514.63 602 590 156.9
D 2 250 465856 2964.97 602 590 156.9

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