ASTROSAT CZTI

Data Quality Report

Orbit 20034

Creation date: 2024-06-27T18:10:22.901698
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/AS1A05_180T01_9000002986_20034cztM0_level2.evt modeM0/AS1A05_180T01_9000002986_20034cztM0_level2_quad_clean.evt
Size (bytes)489,078,720105,480,000
Size466.4 MB 100.6 MB
Events in quadrant A3,677,340702,065
Events in quadrant B3,706,276701,652
Events in quadrant C3,531,368674,093
Events in quadrant D3,464,521672,568

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147572
B0149072
C0141612
D0140862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63651702.670856%
B63651862.922231%
C63651822.859387%
D63651041.633936%

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 7585 6366 14 14 0.18% 0.22%
B 7585 6366 26 26 0.34% 0.41%
C 7585 6366 1 1 0.01% 0.02%
D 7585 6366 3 3 0.04% 0.05%

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 14 238 126080 696.95 901 888 179.6
A 14 254 59793 327.93 901 888 179.6
A 11 29 22369 119.59 901 888 179.6
B 15 201 143895 852.59 890 873 167.7
B 4 80 32076 186.01 890 873 167.7
B 12 111 19051 108.36 890 873 167.7
C 14 238 137305 681.08 867 878 200.3
C 4 254 7137 31.25 867 878 200.3
C 13 61 6071 25.92 867 878 200.3
D 1 52 72252 334.77 886 864 213.2
D 2 234 22866 103.18 886 864 213.2
D 2 120 19620 87.95 886 864 213.2

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