ASTROSAT CZTI

Data Quality Report

Orbit 20190708_A05_188T01_9000003018_level2

Creation date: 2025-12-01T22:39:17.022727
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/AS1A05_188T01_9000003018cztM0_level2.fits modeM0/AS1A05_188T01_9000003018cztM0_level2_quad_clean.evt
Size (bytes)1,057,766,400835,104,960
Size1008.8 MB 796.4 MB
Events in quadrant A6,617,3704,805,945
Events in quadrant B6,366,7444,784,482
Events in quadrant C6,438,3424,560,734
Events in quadrant D5,519,8644,045,169

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021100
B021100
C021100
D021100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01900
B01900
C01900
D01900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02156410
B02251660
C02154060
D02784330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10346610931.056386%
B10346616221.567665%
C10346614691.419790%
D10346656995.508090%

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 122301 103458 0 0 0.00% 0.00%
B 122300 103460 0 0 0.00% 0.00%
C 122301 103463 0 0 0.00% 0.00%
D 122301 103420 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 0 29 6285 11.17 1722 1626 417.2
A 7 110 5255 8.7 1722 1626 417.2
A 9 19 5053 8.21 1722 1626 417.2
B 2 9 5120 10.82 1681 1612 324.2
B 2 8 4224 8.06 1681 1612 324.2
B 5 128 4083 7.62 1681 1612 324.2
C 1 81 4816 7.53 1700 1596 427.7
C 1 80 4706 7.27 1700 1596 427.7
C 3 126 4360 6.46 1700 1596 427.7
D 3 14 4021 6.24 1574 1441 413.3
D 6 231 3932 6.03 1574 1441 413.3
D 7 3 3930 6.02 1574 1441 413.3

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