ASTROSAT CZTI

Data Quality Report

Orbit 41430

Creation date: 2024-06-27T22:28:54.635050
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_41430cztM0_level2.fits modeM0/AS1A12_035T01_9000005666_41430cztM0_level2_quad_clean.evt
Size (bytes)365,057,28093,723,840
Size348.1 MB 89.4 MB
Events in quadrant A2,951,285652,571
Events in quadrant B2,946,687666,935
Events in quadrant C3,520,088596,128
Events in quadrant D3,689,971557,552

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118263
B0120852
C0135312
D0144062

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5205170.326609%
B5205701.344861%
C52053035.821326%
D52053216.167147%

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 9092 5207 4 4 0.04% 0.08%
B 9092 5207 53 53 0.58% 1.02%
C 9092 5207 279 279 3.07% 5.36%
D 9092 5207 269 269 2.96% 5.17%

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 502412 3960.91 620 607 126.7
A 12 189 18162 138.57 620 607 126.7
A 2 79 16323 124.05 620 607 126.7
B 5 255 369502 3163.35 616 600 116.6
B 0 190 103891 885.73 616 600 116.6
B 5 252 36817 310.56 616 600 116.6
C 0 10 624956 4584.87 589 596 136.2
C 15 111 373173 2735.95 589 596 136.2
C 15 214 212333 1554.85 589 596 136.2
D 13 249 759486 5309.89 591 575 142.9
D 13 171 266751 1862.36 591 575 142.9
D 1 52 132002 919.56 591 575 142.9

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