ASTROSAT CZTI

Data Quality Report

Orbit 18730

Creation date: 2024-06-27T17:54:00.987024
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_072T04_9000002802_18730cztM0_level2.evt modeM0/AS1A05_072T04_9000002802_18730cztM0_level2_quad_clean.evt
Size (bytes)546,537,60066,214,080
Size521.2 MB 63.1 MB
Events in quadrant A4,074,424400,409
Events in quadrant B4,377,880399,348
Events in quadrant C3,463,295394,058
Events in quadrant D4,202,982364,684

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160351
B0172391
C0140691
D0164951

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63921692.643930%
B63932564.004380%
C63931221.908337%
D63923515.491239%

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 7697 6393 33 33 0.43% 0.52%
B 7698 6394 88 88 1.14% 1.38%
C 7698 6393 0 0 0.00% 0.00%
D 7697 6393 256 256 3.33% 4.00%

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 4 674722 3854.4 879 862 174.8
A 13 254 11300 59.7 879 862 174.8
A 15 192 8724 44.97 879 862 174.8
B 10 245 843381 5258.44 863 846 160.2
B 7 220 87532 541.03 863 846 160.2
B 4 216 21672 129.98 863 846 160.2
C 14 238 133224 688.14 838 845 192.4
C 0 207 39144 199.09 838 845 192.4
C 3 233 21040 104.98 838 845 192.4
D 7 238 785440 3875.0 836 811 202.5
D 10 70 141745 696.02 836 811 202.5
D 14 34 77343 377.96 836 811 202.5

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