ASTROSAT CZTI

Data Quality Report

Orbit 18568

Creation date: 2024-06-27T17:51:47.106690
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_167T01_9000002758_18568cztM0_level2.evt modeM0/AS1A05_167T01_9000002758_18568cztM0_level2_quad_clean.evt
Size (bytes)512,971,20063,884,160
Size489.2 MB 60.9 MB
Events in quadrant A3,374,495378,101
Events in quadrant B3,505,381385,156
Events in quadrant C3,530,438371,862
Events in quadrant D4,686,506347,785

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143012
B0146762
C0146262
D0182993

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6465761.175561%
B6465931.438515%
C64651041.608662%
D64643465.352723%

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 7630 6465 2 2 0.03% 0.03%
B 7630 6465 6 6 0.08% 0.09%
C 7630 6465 0 0 0.00% 0.00%
D 7629 6464 255 255 3.34% 3.94%

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 14 111 11614 61.21 870 852 175.8
A 13 254 11385 59.91 870 852 175.8
A 6 16 9577 49.63 870 852 175.8
B 0 190 111741 673.34 865 844 164.7
B 12 111 18734 108.62 865 844 164.7
B 11 111 16717 96.38 865 844 164.7
C 14 238 131430 671.71 840 848 194.4
C 9 54 103015 525.55 840 848 194.4
C 8 128 8660 40.18 840 848 194.4
D 1 52 1054878 5226.24 835 815 201.7
D 7 238 367772 1819.44 835 815 201.7
D 7 38 47170 229.84 835 815 201.7

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