ASTROSAT CZTI

Data Quality Report

Orbit 20160826_G05_021T01_9000000624_level2

Creation date: 2025-11-05T00:16:16.397690
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/AS1G05_021T01_9000000624cztM0_level2.fits modeM0/AS1G05_021T01_9000000624cztM0_level2_quad_clean.evt
Size (bytes)451,022,400596,859,840
Size430.1 MB 569.2 MB
Events in quadrant A2,417,8223,319,454
Events in quadrant B2,745,7904,130,664
Events in quadrant C2,554,5983,471,536
Events in quadrant D2,379,6023,603,740

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780600
B01099230
C01919980
D01346640

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011420
B011420
C011420
D011420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A514571093321.246866%
B514576351.234040%
C51457921817.913986%
D5145720754.032493%

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 70581 48935 0 0 0.00% 0.00%
B 70580 51449 0 0 0.00% 0.00%
C 70581 51447 0 0 0.00% 0.00%
D 70581 51335 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 14 188 2446 11.39 627 587 163.3
A 0 29 2376 10.96 627 587 163.3
A 14 204 2080 9.14 627 587 163.3
B 2 9 2362 11.83 725 693 141.1
B 14 254 1972 9.06 725 693 141.1
B 12 226 1951 8.91 725 693 141.1
C 1 80 1878 7.02 674 628 178.2
C 1 81 1876 7.0 674 628 178.2
C 9 188 1782 6.48 674 628 178.2
D 11 82 1975 7.44 679 621 182.0
D 3 14 1833 6.66 679 621 182.0
D 6 231 1758 6.25 679 621 182.0

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