ASTROSAT CZTI

Data Quality Report

Orbit 50502

Creation date: 2025-01-29T02:04:49.005514
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_239T01_9000006444_50502cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50502cztM0_level2_quad_clean.evt
Size (bytes)2,500,960,320203,097,600
Size2.3 GB 193.7 MB
Events in quadrant A14,974,3231,580,454
Events in quadrant B10,095,7731,785,656
Events in quadrant C28,830,596995,590
Events in quadrant D37,264,182522,762

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0569083
B0428753
C0984303
D01233745

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1834714097.679730%
B183486163.357314%
C18348753341.056246%
D183471266769.041260%

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 19907 18349 1193 1193 5.99% 6.50%
B 19908 18350 474 474 2.38% 2.58%
C 19908 18348 7086 7086 35.59% 38.62%
D 19907 18347 11427 11427 57.40% 62.28%

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 10 253 3189568 6721.89 1908 1860 474.2
A 3 130 1178365 2480.88 1908 1860 474.2
A 12 250 751109 1579.93 1908 1860 474.2
B 7 0 1368336 3299.5 1930 1860 414.1
B 4 170 166291 397.03 1930 1860 414.1
B 10 247 120733 287.03 1930 1860 414.1
C 15 236 6432682 15199.12 1528 1516 423.1
C 15 235 4808847 11361.42 1528 1516 423.1
C 12 247 2540466 6000.44 1528 1516 423.1
D 7 61 12248559 43707.06 1007 971 280.2
D 8 48 8121416 28978.83 1007 971 280.2
D 15 184 7810818 27870.42 1007 971 280.2

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