ASTROSAT CZTI

Data Quality Report

Orbit 41622

Creation date: 2024-06-27T22:30:50.008871
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_035T02_9000005680_41622cztM0_level2.fits modeM0/AS1A12_035T02_9000005680_41622cztM0_level2_quad_clean.evt
Size (bytes)487,284,48078,744,960
Size464.7 MB 75.1 MB
Events in quadrant A2,727,744593,804
Events in quadrant B2,515,875601,734
Events in quadrant C2,904,680545,568
Events in quadrant D9,491,706284,805

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111432
B0110322
C0117572
D0316904

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5109120.234880%
B5109370.724212%
C51092094.090820%
D5108261251.135474%

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 7082 5110 3 3 0.04% 0.06%
B 7082 5110 15 15 0.21% 0.29%
C 7082 5110 207 207 2.92% 4.05%
D 7080 5107 2373 2373 33.52% 46.47%

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 505466 4379.73 566 555 115.3
A 2 79 9204 75.02 566 555 115.3
A 13 254 8906 72.44 566 555 115.3
B 5 255 290296 2661.28 561 543 108.9
B 12 111 13648 120.36 561 543 108.9
B 11 111 12541 110.19 561 543 108.9
C 0 10 533819 4218.96 542 545 126.4
C 15 214 222252 1754.02 542 545 126.4
C 0 15 29723 230.84 542 545 126.4
D 12 79 5903760 56723.3 419 405 104.1
D 13 249 1076943 10344.08 419 405 104.1
D 2 120 345596 3316.82 419 405 104.1

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