ASTROSAT CZTI

Data Quality Report

Orbit 50934

Creation date: 2025-03-19T15:03:08.895399
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_50934cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50934cztM0_level2_quad_clean.evt
Size (bytes)864,639,360102,021,120
Size824.6 MB 97.3 MB
Events in quadrant A5,920,401736,251
Events in quadrant B4,070,491825,954
Events in quadrant C12,491,541409,222
Events in quadrant D8,891,950550,293

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233480
B0179820
C0427560
D0321777

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81534575.605299%
B8153810.993499%
C8154383146.983076%
D8153170220.875751%

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 8153 8153 429 429 5.26% 5.26%
B 8153 8153 42 42 0.52% 0.52%
C 8154 8154 3065 3065 37.59% 37.59%
D 8153 8153 1680 1680 20.61% 20.61%

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 14 254 1489635 6960.4 851 830 213.9
A 4 3 224145 1044.03 851 830 213.9
A 3 130 215443 1003.35 851 830 213.9
B 10 247 201096 1082.17 862 829 185.1
B 0 171 155097 833.61 862 829 185.1
B 7 252 78696 420.77 862 829 185.1
C 4 210 6158656 34477.41 634 629 178.6
C 5 10 1477211 8267.05 634 629 178.6
C 12 247 703930 3937.62 634 629 178.6
D 15 184 2779511 13725.77 728 701 202.5
D 8 176 730994 3607.24 728 701 202.5
D 15 185 645749 3186.18 728 701 202.5

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