ASTROSAT CZTI

Data Quality Report

Orbit 43897

Creation date: 2024-06-27T22:56:58.223472
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/AS1A13_009T02_9000005914_43897cztM0_level2.fits modeM0/AS1A13_009T02_9000005914_43897cztM0_level2_quad_clean.evt
Size (bytes)521,294,400106,462,080
Size497.1 MB 101.5 MB
Events in quadrant A6,967,527661,817
Events in quadrant B3,615,622750,183
Events in quadrant C3,165,378714,422
Events in quadrant D5,026,173628,184

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258971
B0151751
C0141771
D0194141

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A672284712.600417%
B67231472.186524%
C6723670.996579%
D67234126.128217%

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 7442 6723 496 496 6.66% 7.38%
B 7443 6724 52 52 0.70% 0.77%
C 7443 6724 19 19 0.26% 0.28%
D 7443 6724 390 390 5.24% 5.80%

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 15 223 2036370 13298.91 739 723 153.1
A 10 83 1030282 6726.12 739 723 153.1
A 15 222 976728 6376.26 739 723 153.1
B 0 200 173073 1152.25 758 735 149.6
B 5 172 165424 1101.11 758 735 149.6
B 5 235 109469 727.0 758 735 149.6
C 14 254 98535 553.98 745 749 176.5
C 3 233 72915 408.84 745 749 176.5
C 15 158 35628 197.6 745 749 176.5
D 5 235 607637 3253.45 737 714 186.5
D 7 80 480215 2570.4 737 714 186.5
D 1 52 319904 1711.04 737 714 186.5

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