ASTROSAT CZTI

Data Quality Report

Orbit 20170321_G06_138T03_9000001096_level2

Creation date: 2025-11-10T05:23:38.598834
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/AS1G06_138T03_9000001096cztM0_level2.fits modeM0/AS1G06_138T03_9000001096cztM0_level2_quad_clean.evt
Size (bytes)483,566,400503,991,360
Size461.2 MB 480.6 MB
Events in quadrant A2,884,6203,017,070
Events in quadrant B2,817,0283,056,572
Events in quadrant C2,896,0962,943,464
Events in quadrant D2,456,0742,656,963

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01079890
B01096150
C01107350
D01327140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010640
B010640
C010640
D010640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A523298181.563187%
B523259431.802198%
C523216011.148678%
D5232726495.062396%

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 59012 52331 0 0 0.00% 0.00%
B 59012 52332 0 0 0.00% 0.00%
C 59012 52330 0 0 0.00% 0.00%
D 59012 52290 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 0 29 2724 10.52 749 695 192.9
A 7 110 2463 9.16 749 695 192.9
A 0 30 2149 7.54 749 695 192.9
B 2 9 2438 11.51 741 700 151.0
B 3 17 1967 8.39 741 700 151.0
B 14 254 1856 7.66 741 700 151.0
C 12 241 2164 7.25 764 706 201.0
C 1 80 2141 7.14 764 706 201.0
C 1 81 2090 6.88 764 706 201.0
D 3 14 1860 6.54 699 633 187.5
D 3 31 1829 6.38 699 633 187.5
D 6 231 1788 6.16 699 633 187.5

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