ASTROSAT CZTI

Data Quality Report

Orbit 47271

Creation date: 2024-10-16T01:15:20.002733
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/AS1A13_025T01_9000006312_47271cztM0_level2.fits modeM0/AS1A13_025T01_9000006312_47271cztM0_level2_quad_clean.evt
Size (bytes)509,264,640107,023,680
Size485.7 MB 102.1 MB
Events in quadrant A7,411,082684,940
Events in quadrant B3,534,286759,430
Events in quadrant C2,913,129723,324
Events in quadrant D4,505,737633,943

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026505131
B01472233
C01304820
D01809981

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62715478.722692%
B62851141.813842%
C6290110.174881%
D62813735.938545%

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 7558 6299 298 298 3.94% 4.73%
B 7558 6299 51 51 0.67% 0.81%
C 7559 6298 5 5 0.07% 0.08%
D 7559 6299 345 345 4.56% 5.48%

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 10 83 3551462 24139.6 712 698 147.1
A 9 191 1057055 7181.56 712 698 147.1
A 0 243 16030 104.23 712 698 147.1
B 0 200 412173 2874.65 736 714 143.1
B 0 183 62324 430.44 736 714 143.1
B 0 190 32762 223.9 736 714 143.1
C 14 254 23643 133.69 727 730 171.4
C 1 3 20287 114.11 727 730 171.4
C 3 233 15742 87.59 727 730 171.4
D 6 112 1317262 7341.18 710 689 179.3
D 12 233 102586 568.18 710 689 179.3
D 1 47 80674 445.99 710 689 179.3

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