ASTROSAT CZTI

Data Quality Report

Orbit 20240205_A13_042T05_9000006052_level2

Creation date: 2024-02-06T15:45:11.045673
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_042T05_9000006052cztM0_level2.fits modeM0/AS1A13_042T05_9000006052cztM0_level2_quad_clean.evt
Size (bytes)228,288,960218,580,480
Size217.7 MB 208.5 MB
Events in quadrant A1,421,7841,371,116
Events in quadrant B1,385,7361,395,823
Events in quadrant C1,459,6401,352,937
Events in quadrant D834,186690,461

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0857330
B0649230
C0586920
D0908830

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05540
B05540
C05540
D05540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2742211344.135366%
B2742011484.186725%
C274223941.436803%
D22617619227.377636%

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 28422 27421 0 0 0.00% 0.00%
B 28422 27412 0 0 0.00% 0.00%
C 28422 27422 0 0 0.00% 0.00%
D 28422 21454 0 0 0.00% 0.00%

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 15 236 1199 8.81 370 344 97.1
A 7 110 1172 8.53 370 344 97.1
A 0 29 1081 7.59 370 344 97.1
B 2 9 1298 12.22 365 344 78.1
B 2 8 1035 8.85 365 344 78.1
B 3 17 1004 8.45 365 344 78.1
C 3 202 1168 7.91 385 355 102.8
C 1 81 1163 7.86 385 355 102.8
C 1 80 1134 7.58 385 355 102.8
D 10 189 621 5.9 239 215 68.8
D 4 16 617 5.84 239 215 68.8
D 6 79 613 5.78 239 215 68.8

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