ASTROSAT CZTI

Data Quality Report

Orbit 42491

Creation date: 2024-06-27T22:40:48.239384
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_42491cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42491cztM0_level2_quad_clean.evt
Size (bytes)337,527,36086,137,920
Size321.9 MB 82.1 MB
Events in quadrant A2,804,745594,043
Events in quadrant B3,383,840573,023
Events in quadrant C2,587,689556,727
Events in quadrant D3,310,786517,899

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114652
B0136482
C0111662
D0135737

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A522590.172249%
B52262114.037505%
C5226520.995025%
D52252304.401914%

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 7289 5226 2 2 0.03% 0.04%
B 7290 5227 154 154 2.11% 2.95%
C 7290 5227 39 39 0.53% 0.75%
D 7288 5225 188 188 2.58% 3.60%

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 595284 5210.25 558 547 114.1
A 12 189 29221 251.2 558 547 114.1
A 13 6 15257 128.86 558 547 114.1
B 5 255 864230 8363.02 540 525 103.3
B 0 229 185217 1788.32 540 525 103.3
B 0 245 70490 677.45 540 525 103.3
C 15 214 221538 1773.35 538 542 124.6
C 9 54 168484 1347.63 538 542 124.6
C 14 32 45715 362.48 538 542 124.6
D 10 118 523529 4012.42 539 525 130.3
D 12 233 161933 1238.3 539 525 130.3
D 5 32 95858 731.38 539 525 130.3

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