ASTROSAT CZTI

Data Quality Report

Orbit 14802

Creation date: 2024-06-27T16:59:52.077041
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/AS1A04_022T02_9000002184_14802cztM0_level2.evt modeM0/AS1A04_022T02_9000002184_14802cztM0_level2_quad_clean.evt
Size (bytes)368,907,84064,647,360
Size351.8 MB 61.7 MB
Events in quadrant A2,418,708407,271
Events in quadrant B3,214,149391,143
Events in quadrant C2,858,199402,626
Events in quadrant D2,328,964393,722

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121871509
B0154342571
C0133151526
D0122661539

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0111
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012018
B012016
C012014
D012014

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5198340.654098%
B51212064.022652%
C5195280.538980%
D5200310.596154%

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 6937 5286 2 2 0.03% 0.04%
B 6915 5197 127 127 1.84% 2.44%
C 6922 5276 0 0 0.00% 0.00%
D 6924 5288 4 4 0.06% 0.08%

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 12 189 51934 410.06 611 599 125.2
A 4 2 15085 115.71 611 599 125.2
A 0 226 5451 38.76 611 599 125.2
B 10 16 787344 6908.47 594 581 113.9
B 3 209 22530 192.73 594 581 113.9
B 0 205 20607 175.85 594 581 113.9
C 3 233 562078 4114.6 585 588 136.5
C 8 128 6317 41.98 585 588 136.5
C 13 61 4234 26.72 585 588 136.5
D 2 234 19626 131.62 588 571 144.8
D 7 254 17190 114.79 588 571 144.8
D 12 4 16980 113.34 588 571 144.8

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