ASTROSAT CZTI

Data Quality Report

Orbit 20190516_A05_101T03_9000002920_level2

Creation date: 2025-11-30T05:58:38.773118
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/AS1A05_101T03_9000002920cztM0_level2.fits modeM0/AS1A05_101T03_9000002920cztM0_level2_quad_clean.evt
Size (bytes)127,480,320143,320,320
Size121.6 MB 136.7 MB
Events in quadrant A775,582903,419
Events in quadrant B741,534889,089
Events in quadrant C750,308842,729
Events in quadrant D646,456758,064

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02800
B02800
C02800
D02800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0279060
B0293410
C0283040
D0374620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A137091140.831571%
B137092281.663141%
C137091671.218178%
D137095323.880662%

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 15894 13706 0 0 0.00% 0.00%
B 15894 13707 0 0 0.00% 0.00%
C 15894 13707 0 0 0.00% 0.00%
D 15894 13688 0 0 0.00% 0.00%

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 0 29 773 11.17 201 189 52.3
A 7 110 655 8.91 201 189 52.3
A 9 19 590 7.67 201 189 52.3
B 2 9 601 10.07 195 186 41.2
B 5 232 504 7.71 195 186 41.2
B 2 8 490 7.37 195 186 41.2
C 3 126 580 7.46 198 184 53.1
C 12 241 560 7.08 198 184 53.1
C 1 81 548 6.85 198 184 53.1
D 4 246 504 6.61 184 167 51.0
D 15 46 472 5.98 184 167 51.0
D 7 5 467 5.88 184 167 51.0

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