ASTROSAT CZTI

Data Quality Report

Orbit 45831

Creation date: 2024-06-27T23:16:38.836652
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/AS1T05_185T01_9000006128_45831cztM0_level2.fits modeM0/AS1T05_185T01_9000006128_45831cztM0_level2_quad_clean.evt
Size (bytes)2,347,130,880371,727,360
Size2.2 GB 354.5 MB
Events in quadrant A25,125,1192,395,408
Events in quadrant B19,963,8382,583,094
Events in quadrant C13,179,4382,547,172
Events in quadrant D26,725,6202,040,103

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04980
B04980
C04980
D04980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0914973
B0762573
C0566784
D0966713

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A24537255910.429148%
B2453816896.883202%
C245376662.714268%
D24537398016.220402%

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 26377 24540 1852 1852 7.02% 7.55%
B 26378 24542 748 748 2.84% 3.05%
C 26377 24541 584 584 2.21% 2.38%
D 26377 24540 3334 3334 12.64% 13.59%

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 9542002 18203.41 2546 2493 524.1
A 15 14 3394856 6473.35 2546 2493 524.1
A 7 3 2034263 3877.05 2546 2493 524.1
B 3 112 7497121 14512.04 2658 2573 516.4
B 4 171 778357 1502.19 2658 2573 516.4
B 0 171 391842 753.76 2658 2573 516.4
C 1 3 1890258 3024.17 2656 2672 624.2
C 12 2 795707 1270.55 2656 2672 624.2
C 3 233 76997 119.08 2656 2672 624.2
D 12 2 4962933 7901.1 2465 2386 627.8
D 11 241 4008926 6381.57 2465 2386 627.8
D 12 1 1868612 2972.5 2465 2386 627.8

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