ASTROSAT CZTI

Data Quality Report

Orbit 31108

Creation date: 2024-06-27T20:23:27.887985
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/AS1A10_109T01_9000004492_31108cztM0_level2.evt modeM0/AS1A10_109T01_9000004492_31108cztM0_level2_quad_clean.evt
Size (bytes)590,405,760123,935,040
Size563.1 MB 118.2 MB
Events in quadrant A3,633,130836,242
Events in quadrant B5,534,738838,471
Events in quadrant C4,012,291821,169
Events in quadrant D4,249,480793,369

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149963
B0206373
C0162723
D0172573

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66611221.831557%
B66612593.888305%
C66612844.263624%
D66621572.356650%

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 9366 6664 0 0 0.00% 0.00%
B 9366 6664 2 2 0.02% 0.03%
C 9366 6664 15 15 0.16% 0.23%
D 9367 6665 50 50 0.53% 0.75%

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 13 254 11945 59.31 942 929 185.7
A 3 137 8870 42.75 942 929 185.7
A 0 226 7824 37.12 942 929 185.7
B 6 159 1835284 10474.61 931 912 175.1
B 0 183 25516 140.49 931 912 175.1
B 12 111 20703 113.01 931 912 175.1
C 0 10 166203 779.04 921 935 212.1
C 14 238 148519 695.68 921 935 212.1
C 10 22 86812 404.81 921 935 212.1
D 8 195 465430 2148.33 925 906 216.2
D 2 250 88159 403.53 925 906 216.2
D 2 153 79741 364.6 925 906 216.2

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