ASTROSAT CZTI

Data Quality Report

Orbit 02202

Creation date: 2024-06-27T14:15:11.366600
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/AS1T01_072T04_9000000342_02202cztM0_level2.evt modeM0/AS1T01_072T04_9000000342_02202cztM0_level2_quad_clean.evt
Size (bytes)981,259,20066,401,280
Size935.8 MB 63.3 MB
Events in quadrant A4,020,884513,290
Events in quadrant B2,989,819559,933
Events in quadrant C17,267,95531,477
Events in quadrant D4,994,134443,840

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166722
B0136082
C05625320
D0199462

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B110
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65834717.154793%
B6583390.592435%
C65816581100.000000%
D658497914.869380%

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 7533 6584 381 381 5.06% 5.79%
B 7533 6583 2 2 0.03% 0.03%
C 7533 6583 6535 6535 86.75% 99.27%
D 7533 6583 964 964 12.80% 14.64%

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 15 171 1265681 8715.41 707 689 145.1
A 10 2 24986 167.4 707 689 145.1
A 12 194 8085 50.96 707 689 145.1
B 6 219 21312 142.1 756 736 144.8
B 4 158 20814 138.66 756 736 144.8
B 4 200 11642 75.32 756 736 144.8
C 7 111 5698786 87123.95 105 96 65.4
C 0 187 2520736 38536.6 105 96 65.4
C 7 247 1322209 20213.02 105 96 65.4
D 7 223 2504205 16218.93 648 631 154.4
D 15 194 11902 73.02 648 631 154.4
D 14 226 7443 44.13 648 631 154.4

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