ASTROSAT CZTI

Data Quality Report

Orbit 43837

Creation date: 2024-06-27T22:56:23.788175
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_018T01_9000005906_43837cztM0_level2.fits modeM0/AS1A13_018T01_9000005906_43837cztM0_level2_quad_clean.evt
Size (bytes)688,904,640109,284,480
Size657.0 MB 104.2 MB
Events in quadrant A5,679,194745,407
Events in quadrant B4,080,673786,297
Events in quadrant C6,853,393723,570
Events in quadrant D8,390,870605,160

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217762
B0162934
C0249957
D0294521

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64325017.789179%
B64313315.146944%
C643165510.185041%
D6433127619.835225%

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 7557 6432 283 283 3.74% 4.40%
B 7558 6432 136 136 1.80% 2.11%
C 7558 6432 300 300 3.97% 4.66%
D 7557 6432 1202 1202 15.91% 18.69%

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 15 223 1459784 9027.94 783 769 161.6
A 10 83 1007260 6227.86 783 769 161.6
A 13 248 139304 857.21 783 769 161.6
B 4 170 385567 2527.29 779 757 152.3
B 0 200 189199 1237.62 779 757 152.3
B 5 235 175405 1147.02 779 757 152.3
C 3 233 3735163 21174.69 753 757 176.4
C 14 96 70666 396.4 753 757 176.4
C 15 158 44883 250.2 753 757 176.4
D 12 33 2683507 14445.61 736 714 185.7
D 10 102 1078898 5805.52 736 714 185.7
D 1 52 422561 2271.45 736 714 185.7

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