ASTROSAT CZTI

Data Quality Report

Orbit 41769

Creation date: 2024-06-27T22:32:39.561373
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_044T19_9000005698_41769cztM0_level2.fits modeM0/AS1A12_044T19_9000005698_41769cztM0_level2_quad_clean.evt
Size (bytes)351,601,92094,322,880
Size335.3 MB 90.0 MB
Events in quadrant A3,108,980636,315
Events in quadrant B2,848,712645,018
Events in quadrant C3,266,878597,048
Events in quadrant D3,332,080566,106

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127882
B0125112
C0134582
D0141292

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5888110.186821%
B5887220.373705%
C58872193.720061%
D58871161.970443%

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 7231 5889 6 6 0.08% 0.10%
B 7229 5886 22 22 0.30% 0.37%
C 7229 5887 217 217 3.00% 3.69%
D 7229 5887 120 120 1.66% 2.04%

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 587061 4364.56 645 631 134.4
A 2 79 11211 78.74 645 631 134.4
A 13 254 9834 68.49 645 631 134.4
B 5 255 153428 1214.89 641 623 125.8
B 0 245 54990 432.25 641 623 125.8
B 0 183 37805 295.62 641 623 125.8
C 0 10 647982 4529.05 608 613 142.9
C 15 214 232997 1625.78 608 613 142.9
C 15 111 7274 46.6 608 613 142.9
D 13 249 249225 1608.62 621 602 154.6
D 2 120 173319 1117.5 621 602 154.6
D 5 32 123406 794.56 621 602 154.6

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