ASTROSAT CZTI

Data Quality Report

Orbit 11623

Creation date: 2024-06-27T16:16:02.774744
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/AS1A04_198T01_9000001708_11623cztM0_level2.evt modeM0/AS1A04_198T01_9000001708_11623cztM0_level2_quad_clean.evt
Size (bytes)700,044,48064,897,920
Size667.6 MB 61.9 MB
Events in quadrant A5,348,857385,355
Events in quadrant B4,161,873398,261
Events in quadrant C3,149,780398,732
Events in quadrant D8,109,927337,525

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0203443
B0162642
C0133592
D0283002

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A636864010.050251%
B63682594.067211%
C6368580.910804%
D6368161325.329774%

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 7609 6370 330 330 4.34% 5.18%
B 7609 6370 84 84 1.10% 1.32%
C 7609 6370 0 0 0.00% 0.00%
D 7609 6368 1352 1352 17.77% 21.23%

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 8 5 1959670 12377.22 789 772 158.3
A 1 162 129395 812.7 789 772 158.3
A 1 178 75576 472.64 789 772 158.3
B 4 239 621182 4020.26 818 798 154.3
B 3 64 197348 1273.7 818 798 154.3
B 11 51 98672 634.25 818 798 154.3
C 13 61 5878 27.51 808 813 184.1
C 3 202 1966 6.26 808 813 184.1
C 3 203 1766 5.17 808 813 184.1
D 13 152 5010932 29524.95 713 693 169.7
D 7 80 205094 1204.52 713 693 169.7
D 2 136 57310 333.64 713 693 169.7

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