ASTROSAT CZTI

Data Quality Report

Orbit 20220909_T05_053T01_9000005338_level2

Creation date: 2026-01-05T06:41:15.500331
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/AS1T05_053T01_9000005338cztM0_level2.fits modeM0/AS1T05_053T01_9000005338cztM0_level2_quad_clean.evt
Size (bytes)1,314,414,7201,389,591,360
Size1.2 GB 1.3 GB
Events in quadrant A7,968,6088,478,975
Events in quadrant B7,525,5208,221,832
Events in quadrant C7,828,1048,294,002
Events in quadrant D6,603,1507,212,739

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029440
B029440
C029440
D029440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03145800
B03520600
C03024380
D03895300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05440
B05440
C05440
D05440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1441857440.516004%
B14418648523.365098%
C1441866830.473694%
D14418672024.994937%

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 198466 144161 0 0 0.00% 0.00%
B 198466 144107 0 0 0.00% 0.00%
C 198466 144167 0 0 0.00% 0.00%
D 198466 143952 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 6691 9.16 2082 1951 517.3
A 7 110 6601 8.99 2082 1951 517.3
A 9 19 6497 8.79 2082 1951 517.3
B 2 9 6675 12.43 1997 1908 383.4
B 3 80 5971 10.6 1997 1908 383.4
B 2 8 5299 8.84 1997 1908 383.4
C 1 81 6709 9.1 2068 1937 524.7
C 1 80 6511 8.72 2068 1937 524.7
C 3 203 6336 8.38 2068 1937 524.7
D 4 160 4923 6.31 1892 1719 507.6
D 7 3 4855 6.18 1892 1719 507.6
D 10 189 4763 6.0 1892 1719 507.6

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