ASTROSAT CZTI

Data Quality Report

Orbit 34836

Creation date: 2022-03-08T23:10:14.163725
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/AS1C07_005T01_9000004992_34836cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34836cztM0_level2_quad_clean.evt
Size (bytes)1,547,274,240247,576,320
Size1.4 GB 236.1 MB
Events in quadrant A13,630,3831,537,454
Events in quadrant B13,674,4261,622,463
Events in quadrant C8,001,4401,677,218
Events in quadrant D10,512,2741,593,526

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0470
B0470
C0470
D0480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0510965
B0506034
C0332164
D0418624

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03140
B03140
C03140
D03140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15458259616.793893%
B15458185011.967913%
C154581290.834519%
D154583672.374175%

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 19724 15461 2133 2133 10.81% 13.80%
B 19723 15460 1591 1591 8.07% 10.29%
C 19724 15461 96 96 0.49% 0.62%
D 19724 15461 340 340 1.72% 2.20%

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 15 169 7081429 21500.73 1642 1611 329.3
A 10 83 108676 325.14 1642 1611 329.3
A 13 6 28311 81.08 1642 1611 329.3
B 5 31 1590941 5002.63 1693 1650 317.7
B 5 15 1585844 4986.59 1693 1650 317.7
B 5 14 1554592 4888.22 1693 1650 317.7
C 15 214 702023 1783.43 1700 1710 392.7
C 0 10 392809 995.98 1700 1710 392.7
C 0 207 160602 404.64 1700 1710 392.7
D 8 195 1831038 4313.74 1686 1641 424.1
D 12 233 602702 1417.31 1686 1641 424.1
D 10 118 532520 1251.82 1686 1641 424.1

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