ASTROSAT CZTI

Data Quality Report

Orbit 22849

Creation date: 2024-06-27T18:46:50.456348
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/AS1C05_013T03_9000003376_22849cztM0_level2.evt modeM0/AS1C05_013T03_9000003376_22849cztM0_level2_quad_clean.evt
Size (bytes)428,958,72082,512,000
Size409.1 MB 78.7 MB
Events in quadrant A2,235,825571,766
Events in quadrant B2,163,208580,913
Events in quadrant C2,152,873558,175
Events in quadrant D6,131,751469,756

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A094531
B094161
C093781
D0214201

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4516160.354296%
B4516300.664305%
C4516380.841453%
D4516156734.698849%

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 5286 4517 0 0 0.00% 0.00%
B 5286 4517 0 0 0.00% 0.00%
C 5286 4517 1 1 0.02% 0.02%
D 5286 4517 1385 1385 26.20% 30.66%

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 11 47 131924 1198.86 539 528 109.6
A 13 252 20432 181.61 539 528 109.6
A 13 254 7993 68.11 539 528 109.6
B 0 190 35338 338.26 537 524 102.9
B 12 111 12325 114.66 537 524 102.9
B 11 111 10632 98.21 537 524 102.9
C 14 238 81648 669.51 517 519 121.2
C 7 247 40636 331.06 517 519 121.2
C 2 16 15306 122.03 517 519 121.2
D 1 52 3851559 32766.33 472 457 117.5
D 1 239 312511 2655.05 472 457 117.5
D 9 85 43316 364.66 472 457 117.5

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