ASTROSAT CZTI

Data Quality Report

Orbit 20151019_P01_162T09_9000000038_level2

Creation date: 2025-01-05T02:55:58.296479
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/AS1P01_162T09_9000000038cztM0_level2.fits modeM0/AS1P01_162T09_9000000038cztM0_level2_quad_clean.evt
Size (bytes)149,621,760191,465,280
Size142.7 MB 182.6 MB
Events in quadrant A847,1081,180,434
Events in quadrant B838,4721,178,091
Events in quadrant C837,8761,116,398
Events in quadrant D702,9841,018,587

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03900
B03900
C03900
D03900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01150
B01150
C01150
D01150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0801140
B0801020
C0752100
D0778390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18938340.179533%
B189381250.660049%
C18938890.469955%
D189382631.388742%

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 30458 18938 0 0 0.00% 0.00%
B 30458 18939 0 0 0.00% 0.00%
C 30458 18939 0 0 0.00% 0.00%
D 30458 18934 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 7 110 806 11.09 220 206 54.1
A 0 29 758 10.2 220 206 54.1
A 9 191 627 7.78 220 206 54.1
B 2 9 728 12.6 222 212 40.9
B 5 128 583 9.06 222 212 40.9
B 14 254 570 8.74 222 212 40.9
C 3 203 692 8.65 221 204 56.4
C 2 191 658 8.05 221 204 56.4
C 3 202 650 7.91 221 204 56.4
D 6 231 540 7.06 202 186 50.2
D 6 44 540 7.06 202 186 50.2
D 10 189 525 6.76 202 186 50.2

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