ASTROSAT CZTI

Data Quality Report

Orbit 36783

Creation date: 2024-06-27T21:31:36.063368
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/AS1A11_083T01_9000005242_36783cztM0_level2.evt modeM0/AS1A11_083T01_9000005242_36783cztM0_level2_quad_clean.evt
Size (bytes)532,163,52048,997,440
Size507.5 MB 46.7 MB
Events in quadrant A2,729,981329,834
Events in quadrant B6,447,512168,795
Events in quadrant C2,883,000320,320
Events in quadrant D3,707,067303,052

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109663
B0225892
C0113502
D0143652

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5147120.233146%
B5147173333.670099%
C5147370.718865%
D51473146.100641%

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 7271 5148 2 2 0.03% 0.04%
B 7270 5146 1238 1238 17.03% 24.06%
C 7271 5148 27 27 0.37% 0.52%
D 7271 5148 282 282 3.88% 5.48%

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 10 83 214947 1664.57 647 637 128.7
A 13 254 8418 60.44 647 637 128.7
A 13 6 7771 55.41 647 637 128.7
B 12 1 4347111 46534.94 497 485 93.4
B 5 255 29218 307.61 497 485 93.4
B 12 2 20826 217.77 497 485 93.4
C 15 214 224282 1553.53 620 626 144.0
C 0 207 110007 759.77 620 626 144.0
C 0 10 51647 354.4 620 626 144.0
D 12 6 637657 4348.5 605 590 146.5
D 13 171 245437 1671.28 605 590 146.5
D 13 249 238285 1622.46 605 590 146.5

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