ASTROSAT CZTI

Data Quality Report

Orbit 40795

Creation date: 2024-06-27T22:20:36.004091
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_095T02_9000005568_40795cztM0_level2.fits modeM0/AS1A12_095T02_9000005568_40795cztM0_level2_quad_clean.evt
Size (bytes)296,490,24084,911,040
Size282.8 MB 81.0 MB
Events in quadrant A2,663,951567,607
Events in quadrant B2,626,494590,505
Events in quadrant C2,611,648561,069
Events in quadrant D2,690,336507,890

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107853
B0110492
C0107432
D0116472

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A490770.142653%
B4907641.304259%
C4907450.917057%
D4907771.569187%

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 7060 4908 4 4 0.06% 0.08%
B 7060 4908 42 42 0.59% 0.86%
C 7060 4908 44 44 0.62% 0.90%
D 7060 4908 60 60 0.85% 1.22%

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 465795 4134.08 551 540 112.5
A 12 189 41721 365.92 551 540 112.5
A 13 254 7930 65.66 551 540 112.5
B 7 202 309434 2903.78 551 536 106.4
B 15 85 54211 504.57 551 536 106.4
B 5 255 47783 444.14 551 536 106.4
C 15 214 212216 1695.92 538 543 124.8
C 0 10 127056 1013.62 538 543 124.8
C 3 233 121045 965.46 538 543 124.8
D 2 249 271074 2061.28 530 515 131.3
D 13 171 149015 1131.36 530 515 131.3
D 1 47 84811 642.22 530 515 131.3

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