ASTROSAT CZTI

Data Quality Report

Orbit 42462

Creation date: 2024-06-27T22:40:28.388366
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/AS1C07_001T10_9000005806_42462cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42462cztM0_level2_quad_clean.evt
Size (bytes)378,172,80076,633,920
Size360.7 MB 73.1 MB
Events in quadrant A2,660,579544,602
Events in quadrant B3,164,189523,659
Events in quadrant C2,230,971513,705
Events in quadrant D5,569,670401,289

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107561
B0129001
C098171
D0198661

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A479380.166910%
B47931763.672022%
C479370.146046%
D4792104721.848915%

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 6824 4794 3 3 0.04% 0.06%
B 6824 4794 148 148 2.17% 3.09%
C 6824 4794 6 6 0.09% 0.13%
D 6823 4793 962 962 14.10% 20.07%

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 507544 4908.66 505 494 103.3
A 12 189 117241 1130.2 505 494 103.3
A 13 248 60039 576.44 505 494 103.3
B 0 186 1044936 11171.03 493 481 93.5
B 4 141 44302 468.69 493 481 93.5
B 5 255 35801 377.77 493 481 93.5
C 15 214 198740 1711.51 494 496 115.8
C 14 254 61506 526.72 494 496 115.8
C 9 54 16735 140.2 494 496 115.8
D 12 233 2954798 26162.16 458 443 112.9
D 1 52 326556 2887.88 458 443 112.9
D 2 249 167565 1479.94 458 443 112.9

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