ASTROSAT CZTI

Data Quality Report

Orbit 20240914_A13_081T01_9000006428_level2

Creation date: 2024-09-18T21:43:54.747382
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_081T01_9000006428cztM0_level2.fits modeM0/AS1A13_081T01_9000006428cztM0_level2_quad_clean.evt
Size (bytes)1,155,660,4801,596,401,280
Size1.1 GB 1.5 GB
Events in quadrant A6,593,37010,012,028
Events in quadrant B6,542,48410,368,504
Events in quadrant C6,751,1769,802,054
Events in quadrant D5,779,0588,843,071

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05102030
B02936820
C02797380
D03191140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027580
B027580
C027580
D027580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13613646923.446553%
B13613729402.159589%
C1361379220.677259%
D13613639252.883146%

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 150426 136120 0 0 0.00% 0.00%
B 150428 136113 0 0 0.00% 0.00%
C 150427 136123 0 0 0.00% 0.00%
D 150427 136073 0 0 0.00% 0.00%

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 14 188 7150 12.7 1716 1608 436.3
A 14 204 5813 9.64 1716 1608 436.3
A 7 110 5373 8.63 1716 1608 436.3
B 2 9 6321 13.71 1729 1643 341.3
B 2 8 5096 10.12 1729 1643 341.3
B 3 17 4795 9.24 1729 1643 341.3
C 3 202 5240 7.7 1783 1652 466.3
C 1 81 5138 7.48 1783 1652 466.3
C 3 203 5056 7.3 1783 1652 466.3
D 6 38 4190 5.73 1657 1493 470.4
D 10 189 4142 5.63 1657 1493 470.4
D 15 47 4139 5.62 1657 1493 470.4

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