ASTROSAT CZTI

Data Quality Report

Orbit 20220810_A11_079T01_9000005284_level2

Creation date: 2026-01-04T04:41:31.106055
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/AS1A11_079T01_9000005284cztM0_level2.fits modeM0/AS1A11_079T01_9000005284cztM0_level2_quad_clean.evt
Size (bytes)4,223,917,4404,250,220,480
Size3.9 GB 4.0 GB
Events in quadrant A26,190,33626,239,174
Events in quadrant B24,527,44425,545,339
Events in quadrant C25,162,06824,705,969
Events in quadrant D21,588,74621,786,804

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016760
B016760
C016760
D016760

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090840
B090840
C090840
D090840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09474030
B010464120
C010480900
D011983860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A44461017390.391129%
B444609105402.370622%
C44460968151.532807%
D444607210024.723722%

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 610962 444578 0 0 0.00% 0.00%
B 610962 444508 0 0 0.00% 0.00%
C 610962 444572 0 0 0.00% 0.00%
D 610962 444413 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 21388 8.97 6850 6438 1666.9
A 9 19 21129 8.81 6850 6438 1666.9
A 0 29 20401 8.38 6850 6438 1666.9
B 2 9 21285 12.06 6512 6228 1248.3
B 3 80 18817 10.09 6512 6228 1248.3
B 5 128 17253 8.83 6512 6228 1248.3
C 1 81 20749 8.54 6654 6242 1698.3
C 1 80 20093 8.16 6654 6242 1698.3
C 3 203 19929 8.06 6654 6242 1698.3
D 7 3 15796 6.21 6202 5667 1631.6
D 10 113 15679 6.14 6202 5667 1631.6
D 4 160 15439 5.99 6202 5667 1631.6

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