ASTROSAT CZTI

Data Quality Report

Orbit 20221222_A12_044T04_9000005434_level2

Creation date: 2022-12-26T05:30:14.831023
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_044T04_9000005434cztM0_level2.fits modeM0/AS1A12_044T04_9000005434cztM0_level2_quad_clean.evt
Size (bytes)353,738,880390,634,560
Size337.4 MB 372.5 MB
Events in quadrant A2,129,0522,402,461
Events in quadrant B2,027,9802,392,082
Events in quadrant C2,082,0222,326,905
Events in quadrant D1,751,6241,987,228

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08060
B08060
C08060
D08060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0862780
B0861530
C0826090
D01403480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01210
B01210
C01210
D01210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A396433540.892970%
B396434841.220897%
C39643640.161441%
D3964322825.756376%

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 51677 39642 0 0 0.00% 0.00%
B 51677 39622 0 0 0.00% 0.00%
C 51677 39643 0 0 0.00% 0.00%
D 51677 39638 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 0 29 1748 8.76 555 520 140.2
A 7 110 1744 8.73 555 520 140.2
A 9 19 1721 8.56 555 520 140.2
B 2 9 1758 11.85 537 514 105.0
B 3 80 1645 10.77 537 514 105.0
B 3 17 1437 8.79 537 514 105.0
C 1 81 1747 8.73 550 514 141.3
C 1 80 1651 8.05 550 514 141.3
C 3 202 1566 7.45 550 514 141.3
D 7 3 1324 6.48 501 458 133.7
D 4 160 1297 6.28 501 458 133.7
D 10 189 1289 6.22 501 458 133.7

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