ASTROSAT CZTI

Data Quality Report

Orbit 42798

Creation date: 2024-06-27T22:44:22.430011
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_013T01_9000005822_42798cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42798cztM0_level2_quad_clean.evt
Size (bytes)352,036,80097,928,640
Size335.7 MB 93.4 MB
Events in quadrant A3,378,726652,608
Events in quadrant B2,741,566657,001
Events in quadrant C3,172,561649,429
Events in quadrant D3,279,174593,969

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133432
B0121572
C0129512
D0137383

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5899460.779793%
B5899190.322088%
C5899170.288184%
D58981141.932859%

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 7242 5900 33 33 0.46% 0.56%
B 7242 5900 9 9 0.12% 0.15%
C 7242 5900 12 12 0.17% 0.20%
D 7241 5899 114 114 1.57% 1.93%

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 620338 4567.53 656 644 135.7
A 13 248 207063 1521.44 656 644 135.7
A 2 79 12095 84.4 656 644 135.7
B 5 172 52299 407.27 646 627 126.9
B 6 235 44313 344.33 646 627 126.9
B 5 255 25181 193.53 646 627 126.9
C 8 79 251008 1655.26 642 645 151.3
C 15 214 240026 1582.66 642 645 151.3
C 14 254 103766 681.78 642 645 151.3
D 12 233 190617 1211.63 639 623 156.8
D 7 96 185376 1178.21 639 623 156.8
D 1 52 172294 1094.78 639 623 156.8

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