ASTROSAT CZTI

Data Quality Report

Orbit 52320

Creation date: 2025-07-22T17:27:13.334491
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/AS1C09_011T05_9000006474_52320cztM0_level2.fits modeM0/AS1C09_011T05_9000006474_52320cztM0_level2_quad_clean.evt
Size (bytes)771,937,92077,037,120
Size736.2 MB 73.5 MB
Events in quadrant A3,500,884604,547
Events in quadrant B3,950,575628,306
Events in quadrant C10,198,310289,193
Events in quadrant D10,438,072371,629

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015158229
B016435286
C035390748
D036097730

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01282
B01282
C01282
D01282

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6296891.413596%
B62921522.415766%
C6282328152.228590%
D6277228436.386809%

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 7371 6309 58 58 0.79% 0.92%
B 7367 6302 64 64 0.87% 1.02%
C 7286 6286 3059 3059 41.98% 48.66%
D 7278 6283 2426 2426 33.33% 38.61%

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 5 240 166990 1025.03 649 632 162.3
A 8 9 160832 987.09 649 632 162.3
A 15 174 159471 978.7 649 632 162.3
B 7 0 524057 3819.25 637 613 137.1
B 4 171 327767 2387.04 637 613 137.1
B 0 213 179358 1304.19 637 613 137.1
C 15 178 5705230 49784.16 404 400 114.6
C 15 224 2099048 18314.21 404 400 114.6
C 5 250 251209 2188.73 404 400 114.6
D 12 17 2513525 16360.32 525 501 153.6
D 15 93 2324807 15131.73 525 501 153.6
D 12 2 748194 4867.64 525 501 153.6

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