ASTROSAT CZTI

Data Quality Report

Orbit 18773

Creation date: 2024-06-27T17:54:59.187892
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_088T03_9000002808_18773cztM0_level2.evt modeM0/AS1A05_088T03_9000002808_18773cztM0_level2_quad_clean.evt
Size (bytes)482,063,04080,907,840
Size459.7 MB 77.2 MB
Events in quadrant A3,556,301505,119
Events in quadrant B3,668,031511,945
Events in quadrant C3,462,694493,946
Events in quadrant D3,477,455492,055

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144662
B0147712
C0139892
D0141582

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64061171.826413%
B64061482.310334%
C64061241.935685%
D6406961.498595%

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 7691 6407 7 7 0.09% 0.11%
B 7691 6407 23 23 0.30% 0.36%
C 7691 6407 0 0 0.00% 0.00%
D 7691 6407 10 10 0.13% 0.16%

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 6 16 67889 374.49 899 885 178.9
A 15 192 17239 91.4 899 885 178.9
A 13 254 9946 50.64 899 885 178.9
B 7 220 152225 921.62 881 861 164.2
B 0 229 31190 184.67 881 861 164.2
B 4 216 20120 117.26 881 861 164.2
C 14 238 136268 698.94 849 857 193.7
C 0 207 7873 36.21 849 857 193.7
C 3 233 7399 33.77 849 857 193.7
D 14 34 75504 359.41 872 852 207.7
D 1 52 71354 339.43 872 852 207.7
D 2 234 30002 140.34 872 852 207.7

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