ASTROSAT CZTI

Data Quality Report

Orbit 55320

Creation date: 2025-12-20T13:21:10.690048
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_009T01_9000006534_55320cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55320cztM0_level2_quad_clean.evt
Size (bytes)568,817,280112,484,160
Size542.5 MB 107.3 MB
Events in quadrant A5,885,772703,243
Events in quadrant B4,206,174762,924
Events in quadrant C5,259,169679,092
Events in quadrant D5,000,545631,129

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01820
B01820
C01820
D01820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023992150
B01956653
C02250546
D02162047

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A90572753.036325%
B90651571.731936%
C90683854.245699%
D90721061.168430%

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 9366 9350 247 247 2.64% 2.64%
B 9363 9358 36 36 0.38% 0.38%
C 9366 9363 318 318 3.40% 3.40%
D 9366 9362 99 99 1.06% 1.06%

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 1132980 4767.72 963 939 237.4
A 0 8 606729 2551.35 963 939 237.4
A 3 14 150985 631.94 963 939 237.4
B 0 199 136588 653.78 964 927 207.5
B 2 249 104867 500.91 964 927 207.5
B 7 252 85792 408.98 964 927 207.5
C 12 249 794626 3108.77 937 929 255.3
C 15 147 416631 1628.23 937 929 255.3
C 13 3 179864 700.86 937 929 255.3
D 15 42 264700 992.99 947 906 265.7
D 11 129 262648 985.27 947 906 265.7
D 6 239 172343 645.34 947 906 265.7

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