ASTROSAT CZTI

Data Quality Report

Orbit 19016

Creation date: 2024-06-27T17:58:06.054001
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/AS1A06_003T05_9000002830_19016cztM0_level2.evt modeM0/AS1A06_003T05_9000002830_19016cztM0_level2_quad_clean.evt
Size (bytes)656,539,20090,809,280
Size626.1 MB 86.6 MB
Events in quadrant A7,445,100536,469
Events in quadrant B3,338,806614,173
Events in quadrant C3,248,649584,148
Events in quadrant D5,399,035549,576

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0266263
B0143102
C0140302
D0205482

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6675188028.164794%
B6675781.168539%
C6675871.303371%
D66754036.037453%

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 8660 6677 1411 1411 16.29% 21.13%
B 8660 6677 5 5 0.06% 0.07%
C 8660 6677 0 0 0.00% 0.00%
D 8660 6677 288 288 3.33% 4.31%

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 14 235 4814460 35028.11 677 663 137.4
A 8 192 12114 83.32 677 663 137.4
A 15 191 6623 43.37 677 663 137.4
B 0 189 40936 259.14 816 795 154.9
B 7 220 37141 234.64 816 795 154.9
B 3 112 20768 128.94 816 795 154.9
C 14 238 121617 652.9 785 791 185.1
C 3 233 58288 310.69 785 791 185.1
C 13 61 5494 25.41 785 791 185.1
D 7 238 1654021 8632.2 780 753 191.5
D 1 52 771490 4024.25 780 753 191.5
D 2 234 28933 147.14 780 753 191.5

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