ASTROSAT CZTI

Data Quality Report

Orbit 09051

Creation date: 2024-06-27T15:40:37.305010
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/AS1A03_046T01_9000001260_09051cztM0_level2.evt modeM0/AS1A03_046T01_9000001260_09051cztM0_level2_quad_clean.evt
Size (bytes)514,730,880108,835,200
Size490.9 MB 103.8 MB
Events in quadrant A4,467,056699,444
Events in quadrant B3,497,120704,862
Events in quadrant C3,311,673690,529
Events in quadrant D3,803,457679,422

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01847845
B01556123
C01548228
D01666147

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7498851.133636%
B7503791.052912%
C7503430.573104%
D74981201.600427%

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 7694 7514 1 1 0.01% 0.01%
B 7694 7515 0 0 0.00% 0.00%
C 7694 7513 11 11 0.14% 0.15%
D 7694 7514 68 68 0.88% 0.90%

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 8 5 898370 5116.77 863 843 175.4
A 1 162 111776 632.43 863 843 175.4
A 5 16 44508 248.93 863 843 175.4
B 6 51 25274 147.59 866 843 165.5
B 10 16 20640 119.6 866 843 165.5
B 0 214 18729 108.05 866 843 165.5
C 14 234 62534 321.97 831 833 191.6
C 13 61 6332 28.7 831 833 191.6
C 8 128 4944 21.45 831 833 191.6
D 2 14 302404 1401.65 826 804 215.2
D 1 52 194936 902.21 826 804 215.2
D 6 225 66876 307.06 826 804 215.2

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