ASTROSAT CZTI

Data Quality Report

Orbit 13538

Creation date: 2024-06-27T16:42:18.740487
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/AS1T02_038T01_9000001994_13538cztM0_level2.evt modeM0/AS1T02_038T01_9000001994_13538cztM0_level2_quad_clean.evt
Size (bytes)698,296,320114,304,320
Size665.9 MB 109.0 MB
Events in quadrant A3,732,339789,457
Events in quadrant B3,917,103785,263
Events in quadrant C4,218,137780,093
Events in quadrant D8,797,749609,618

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150482
B0156931
C0171171
D0310841

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7131480.673117%
B7131841.177955%
C7131250.350582%
D7131184225.830879%

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 7432 7133 1 1 0.01% 0.01%
B 7432 7133 20 20 0.27% 0.28%
C 7432 7133 0 0 0.00% 0.00%
D 7432 7133 1578 1578 21.23% 22.12%

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 1 162 32394 150.41 953 933 209.2
A 1 178 11108 48.64 953 933 209.2
A 15 69 11008 48.17 953 933 209.2
B 0 182 72313 378.35 947 928 188.7
B 3 64 43366 224.93 947 928 188.7
B 3 209 28993 148.75 947 928 188.7
C 3 233 612363 2773.24 922 935 220.5
C 8 128 6787 26.54 922 935 220.5
C 13 61 6465 25.08 922 935 220.5
D 13 122 5141306 25420.4 806 783 202.2
D 5 222 300552 1482.39 806 783 202.2
D 12 110 70168 343.12 806 783 202.2

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