ASTROSAT CZTI

Data Quality Report

Orbit 53649

Creation date: 2025-08-29T12:43:32.073084
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/AS1A14_022T05_9000006504_53649cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53649cztM0_level2_quad_clean.evt
Size (bytes)3,191,765,760268,067,520
Size3.0 GB 255.6 MB
Events in quadrant A24,640,5431,811,361
Events in quadrant B25,151,2862,008,061
Events in quadrant C42,727,9641,006,785
Events in quadrant D23,836,2941,682,399

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04760
B04760
C04760
D04760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0893344
B0907815
C01426884
D0868974

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A23324451219.344881%
B23323398217.073275%
C233231291255.361660%
D23323389716.708828%

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 25454 23328 3363 3363 13.21% 14.42%
B 25453 23327 2766 2766 10.87% 11.86%
C 25452 23324 11701 11701 45.97% 50.17%
D 25453 23325 3053 3053 11.99% 13.09%

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 3 78 9921913 16726.24 2395 2341 593.1
A 4 191 1589026 2675.45 2395 2341 593.1
A 15 174 955434 1607.09 2395 2341 593.1
B 4 206 7040957 14049.09 2369 2285 501.0
B 5 172 4041790 8062.79 2369 2285 501.0
B 7 0 1761410 3511.19 2369 2285 501.0
C 1 241 25544616 54121.29 1712 1699 472.0
C 15 224 6416951 13592.88 1712 1699 472.0
C 13 3 1638294 3467.68 1712 1699 472.0
D 8 176 5652052 8272.6 2352 2244 683.0
D 15 93 4572091 6691.29 2352 2244 683.0
D 10 172 636182 928.23 2352 2244 683.0

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