ASTROSAT CZTI

Data Quality Report

Orbit 42890

Creation date: 2024-06-27T22:45:27.211555
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/AS1T05_143T01_9000005830_42890cztM0_level2.fits modeM0/AS1T05_143T01_9000005830_42890cztM0_level2_quad_clean.evt
Size (bytes)435,358,08085,320,000
Size415.2 MB 81.4 MB
Events in quadrant A3,356,668596,679
Events in quadrant B2,583,869615,543
Events in quadrant C5,675,168478,044
Events in quadrant D4,078,469513,719

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133221
B0115021
C0204731
D0158191

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54191683.100203%
B5419641.181030%
C5420102818.966790%
D54203536.512915%

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 7122 5420 124 124 1.74% 2.29%
B 7122 5420 35 35 0.49% 0.65%
C 7123 5421 980 980 13.76% 18.08%
D 7123 5421 319 319 4.48% 5.88%

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 532030 4394.2 584 571 120.9
A 15 237 524538 4332.25 584 571 120.9
A 13 248 13176 104.22 584 571 120.9
B 15 85 102678 899.77 586 571 113.5
B 5 172 65020 567.93 586 571 113.5
B 3 112 43890 381.73 586 571 113.5
C 12 2 2895974 24560.19 504 506 117.9
C 15 208 231488 1959.26 504 506 117.9
C 15 214 205838 1741.68 504 506 117.9
D 1 52 1410605 10249.88 561 544 137.6
D 13 249 168302 1219.45 561 544 137.6
D 12 6 117569 850.67 561 544 137.6

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