ASTROSAT CZTI

Data Quality Report

Orbit 41411

Creation date: 2024-06-27T22:28:41.603354
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/AS1A12_035T01_9000005666_41411cztM0_level2.fits modeM0/AS1A12_035T01_9000005666_41411cztM0_level2_quad_clean.evt
Size (bytes)345,288,96090,270,720
Size329.3 MB 86.1 MB
Events in quadrant A3,190,291610,786
Events in quadrant B2,709,278618,406
Events in quadrant C3,244,171564,855
Events in quadrant D3,202,468547,770

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129003
B0118312
C0131102
D0134442

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5588170.304223%
B5588360.644238%
C55882534.527559%
D5588931.664281%

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 7140 5589 6 6 0.08% 0.11%
B 7140 5589 14 14 0.20% 0.25%
C 7140 5589 239 239 3.35% 4.28%
D 7140 5589 78 78 1.09% 1.40%

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 10 83 554017 4336.67 620 605 127.6
A 2 79 146196 1140.88 620 605 127.6
A 15 254 35312 271.97 620 605 127.6
B 5 255 148636 1230.1 615 598 120.3
B 0 190 86110 710.55 615 598 120.3
B 0 189 29174 237.45 615 598 120.3
C 0 10 615409 4501.03 584 587 136.6
C 15 214 244176 1783.28 584 587 136.6
C 0 15 105031 764.62 584 587 136.6
D 1 52 481169 3261.11 603 586 147.4
D 2 249 295941 2004.2 603 586 147.4
D 13 249 52378 351.45 603 586 147.4

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