ASTROSAT CZTI

Data Quality Report

Orbit 16577

Creation date: 2024-06-27T17:24:37.774581
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/AS1T03_020T01_9000002444_16577cztM0_level2.evt modeM0/AS1T03_020T01_9000002444_16577cztM0_level2_quad_clean.evt
Size (bytes)2,259,757,440368,380,800
Size2.1 GB 351.3 MB
Events in quadrant A13,567,2642,480,756
Events in quadrant B14,999,4502,541,301
Events in quadrant C19,647,1402,361,626
Events in quadrant D18,344,7361,862,929

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07015
B07316
C08730
D07116

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05785
B058025
C059721
D059919

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0612332061
B0656142496
C0809023994
D0779343392

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A278802040.731707%
B277814051.457831%
C2758110683.872231%
D27693777128.061243%

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 36107 29508 58 58 0.16% 0.20%
B 36107 29509 34 34 0.09% 0.12%
C 36107 29455 232 232 0.64% 0.79%
D 36108 29256 1268 1268 3.51% 4.33%

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 9 143 532055 800.23 3296 3221 660.9
A 15 174 292004 436.99 3296 3221 660.9
A 2 79 70953 102.49 3296 3221 660.9
B 0 85 715869 1162.21 3318 3227 613.2
B 15 35 701515 1138.8 3318 3227 613.2
B 0 229 139731 222.62 3318 3227 613.2
C 3 233 6828019 9442.37 3146 3166 722.8
C 14 238 491694 675.89 3146 3166 722.8
C 7 247 44429 57.09 3146 3166 722.8
D 1 52 6378971 10571.08 2516 2445 603.2
D 2 33 1020976 1688.53 2516 2445 603.2
D 10 70 852075 1408.53 2516 2445 603.2

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