ASTROSAT CZTI

Data Quality Report

Orbit 20230813_A12_061T07_9000005818_level2

Creation date: 2023-08-16T14:13:18.165805
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/AS1A12_061T07_9000005818cztM0_level2.fits modeM0/AS1A12_061T07_9000005818cztM0_level2_quad_clean.evt
Size (bytes)1,223,645,7601,362,378,240
Size1.1 GB 1.3 GB
Events in quadrant A7,282,6968,333,223
Events in quadrant B6,971,4108,381,976
Events in quadrant C7,166,8607,920,083
Events in quadrant D6,135,0067,127,059

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02953900
B02887720
C02985780
D03638970

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028360
B028360
C028360
D028360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04850
B04860
C04870
D04870

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1386442810.202677%
B1386456470.466659%
C1386467430.535897%
D13864452793.807594%

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 201901 138642 0 0 0.00% 0.00%
B 201901 138643 0 0 0.00% 0.00%
C 201901 138642 0 0 0.00% 0.00%
D 201901 138387 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 7 110 6086 8.94 1900 1769 482.9
A 0 29 5944 8.65 1900 1769 482.9
A 9 19 5808 8.36 1900 1769 482.9
B 2 9 6071 12.14 1843 1751 355.8
B 3 80 4945 8.98 1843 1751 355.8
B 5 128 4911 8.88 1843 1751 355.8
C 1 81 6003 8.81 1894 1770 480.5
C 1 80 5679 8.14 1894 1770 480.5
C 3 202 5623 8.02 1894 1770 480.5
D 4 160 4514 6.25 1755 1593 467.0
D 7 3 4467 6.15 1755 1593 467.0
D 10 189 4455 6.13 1755 1593 467.0

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