ASTROSAT CZTI

Data Quality Report

Orbit 50803

Creation date: 2025-02-18T07:53:29.172292
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/AS1C07_001T01_9000006450_50803cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50803cztM0_level2_quad_clean.evt
Size (bytes)646,384,320118,128,960
Size616.4 MB 112.7 MB
Events in quadrant A5,462,225770,952
Events in quadrant B4,249,116847,911
Events in quadrant C7,028,443698,540
Events in quadrant D6,539,958679,223

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221331
B0189161
C0267591
D0252402

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83542733.267896%
B83541541.843428%
C83547829.360785%
D83544245.075413%

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 8369 8355 248 248 2.96% 2.97%
B 8369 8355 81 81 0.97% 0.97%
C 8369 8355 529 529 6.32% 6.33%
D 8369 8355 417 417 4.98% 4.99%

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 4 249 879259 3966.75 892 869 221.4
A 8 247 196522 883.56 892 869 221.4
A 4 3 193775 871.15 892 869 221.4
B 8 128 180857 940.76 898 868 191.3
B 5 185 107419 556.92 898 868 191.3
B 10 43 92655 479.75 898 868 191.3
C 5 10 971978 4120.47 854 844 235.7
C 4 210 620368 2628.61 854 844 235.7
C 1 3 409508 1733.94 854 844 235.7
D 15 108 467616 1960.41 856 825 238.1
D 2 216 414015 1735.3 856 825 238.1
D 2 249 372427 1560.64 856 825 238.1

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