ASTROSAT CZTI

Data Quality Report

Orbit 20190213_A06_006T01_9000002720_level2

Creation date: 2025-11-27T21:22:17.982445
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/AS1A06_006T01_9000002720cztM0_level2.fits modeM0/AS1A06_006T01_9000002720cztM0_level2_quad_clean.evt
Size (bytes)4,724,475,8404,433,040,000
Size4.4 GB 4.1 GB
Events in quadrant A29,252,23426,771,262
Events in quadrant B28,029,91426,514,074
Events in quadrant C28,669,58225,846,448
Events in quadrant D23,980,14421,990,974

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A098620
B098620
C098620
D098620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07690
B07690
C07690
D07690

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010208400
B010555040
C010326630
D015275410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A48389365051.344305%
B48389376941.590021%
C48389286551.788622%
D483892395318.169385%

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 560544 483886 0 0 0.00% 0.00%
B 560544 483885 0 0 0.00% 0.00%
C 560544 483885 0 0 0.00% 0.00%
D 560544 483536 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 28056 11.22 7620 7145 1863.5
A 7 110 23784 8.93 7620 7145 1863.5
A 0 30 22906 8.46 7620 7145 1863.5
B 2 9 22797 10.91 7425 7085 1440.5
B 2 8 18955 8.24 7425 7085 1440.5
B 5 232 18281 7.77 7425 7085 1440.5
C 1 80 21875 7.7 7566 7052 1925.5
C 1 81 21502 7.5 7566 7052 1925.5
C 12 241 19914 6.68 7566 7052 1925.5
D 10 190 18023 6.53 6858 6243 1804.9
D 3 14 17586 6.28 6858 6243 1804.9
D 6 231 17229 6.09 6858 6243 1804.9

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