ASTROSAT CZTI

Data Quality Report

Orbit 16749

Creation date: 2024-06-27T17:27:11.036279
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_202T01_9000002484_16749cztM0_level2.evt modeM0/AS1A05_202T01_9000002484_16749cztM0_level2_quad_clean.evt
Size (bytes)576,887,040123,183,360
Size550.2 MB 117.5 MB
Events in quadrant A3,089,413867,413
Events in quadrant B3,614,941875,267
Events in quadrant C3,336,240830,801
Events in quadrant D6,989,679703,525

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134133
B0149692
C0142002
D0252522

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6499260.400062%
B64991001.538698%
C6499721.107863%
D6499152023.388214%

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 7520 6501 0 0 0.00% 0.00%
B 7520 6501 50 50 0.66% 0.77%
C 7520 6501 2 2 0.03% 0.03%
D 7520 6501 960 960 12.77% 14.77%

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 3 1 26230 159.18 795 780 159.9
A 15 174 8253 46.74 795 780 159.9
A 0 226 7059 39.27 795 780 159.9
B 3 209 199439 1348.12 794 775 147.4
B 15 35 123394 832.08 794 775 147.4
B 0 189 86171 579.49 794 775 147.4
C 3 233 236134 1369.23 751 757 171.9
C 14 238 119260 689.35 751 757 171.9
C 0 207 49360 282.73 751 757 171.9
D 1 52 3667412 22848.14 668 649 160.5
D 15 0 290720 1807.47 668 649 160.5
D 2 16 205090 1273.9 668 649 160.5

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