ASTROSAT CZTI

Data Quality Report

Orbit 41981

Creation date: 2024-06-27T22:35:18.850230
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_104T01_9000005728_41981cztM0_level2.fits modeM0/AS1A12_104T01_9000005728_41981cztM0_level2_quad_clean.evt
Size (bytes)283,276,80085,861,440
Size270.2 MB 81.9 MB
Events in quadrant A2,674,886579,555
Events in quadrant B2,299,552602,182
Events in quadrant C2,391,099568,461
Events in quadrant D2,739,853507,752

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108063
B0100312
C0100622
D0117492

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A487580.164103%
B4875110.225641%
C4875200.410256%
D48751583.241026%

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 6938 4876 4 4 0.06% 0.08%
B 6938 4876 3 3 0.04% 0.06%
C 6938 4876 23 23 0.33% 0.47%
D 6938 4876 137 137 1.97% 2.81%

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 490941 4333.21 552 542 113.2
A 2 79 46500 406.09 552 542 113.2
A 3 137 5841 46.82 552 542 113.2
B 0 190 51941 486.46 551 536 105.7
B 0 156 28697 266.5 551 536 105.7
B 4 81 27958 259.5 551 536 105.7
C 15 214 200650 1600.46 536 539 125.0
C 15 111 80984 643.39 536 539 125.0
C 8 79 16376 126.66 536 539 125.0
D 13 249 350505 2706.27 524 508 129.3
D 12 6 174651 1346.52 524 508 129.3
D 2 249 152204 1172.95 524 508 129.3

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