ASTROSAT CZTI

Data Quality Report

Orbit 10621

Creation date: 2024-06-27T16:01:35.733671
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/AS1T01_191T01_9000001536_10621cztM0_level2.evt modeM0/AS1T01_191T01_9000001536_10621cztM0_level2_quad_clean.evt
Size (bytes)444,974,40090,987,840
Size424.4 MB 86.8 MB
Events in quadrant A2,923,456603,901
Events in quadrant B4,131,202591,027
Events in quadrant C2,676,470597,032
Events in quadrant D3,355,797562,774

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123642
B0159961
C0119171
D0137201

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5733440.767486%
B57332824.918891%
C5733260.453515%
D5733470.819815%

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 6913 5734 2 2 0.03% 0.03%
B 6913 5734 154 154 2.23% 2.69%
C 6913 5734 1 1 0.01% 0.02%
D 6913 5734 19 19 0.27% 0.33%

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 13 251 95071 653.58 706 693 144.4
A 15 239 38609 262.57 706 693 144.4
A 1 162 33813 229.36 706 693 144.4
B 4 239 1159350 8717.31 693 681 132.9
B 10 246 118405 885.7 693 681 132.9
B 0 219 71840 535.37 693 681 132.9
C 4 254 16272 98.96 676 684 157.5
C 14 234 10788 64.14 676 684 157.5
C 13 61 5108 28.09 676 684 157.5
D 2 16 384373 2319.8 674 659 165.4
D 8 195 173465 1044.72 674 659 165.4
D 13 104 92724 556.59 674 659 165.4

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