ASTROSAT CZTI

Data Quality Report

Orbit 09155

Creation date: 2024-06-27T15:42:02.227445
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/AS1C02_042T01_9000001278_09155cztM0_level2.evt modeM0/AS1C02_042T01_9000001278_09155cztM0_level2_quad_clean.evt
Size (bytes)830,995,200178,643,520
Size792.5 MB 170.4 MB
Events in quadrant A6,853,6441,143,109
Events in quadrant B5,767,4171,157,042
Events in quadrant C5,491,0521,147,064
Events in quadrant D6,207,3851,099,067

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0284653
B0257402
C0253622
D0272502

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02520
C02520
D02520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A125141250.998881%
B12514860.687230%
C12514820.655266%
D125141711.366470%

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 13664 12516 3 3 0.02% 0.02%
B 13664 12514 2 2 0.01% 0.02%
C 13664 12514 0 0 0.00% 0.00%
D 13664 12514 76 76 0.56% 0.61%

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 5 1202719 4116.14 1426 1392 291.9
A 1 162 88711 299.18 1426 1392 291.9
A 1 178 17753 56.06 1426 1392 291.9
B 0 230 67050 241.66 1437 1399 271.7
B 12 111 29771 104.44 1437 1399 271.7
B 0 219 26911 93.91 1437 1399 271.7
C 8 208 11948 32.62 1400 1404 323.2
C 13 61 10446 27.98 1400 1404 323.2
C 14 67 7686 19.44 1400 1404 323.2
D 1 52 223953 593.6 1382 1352 375.0
D 2 14 173874 460.06 1382 1352 375.0
D 7 71 101383 266.75 1382 1352 375.0

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