ASTROSAT CZTI

Data Quality Report

Orbit 40672

Creation date: 2024-06-27T22:18:58.483589
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/AS1A12_029T02_9000005558_40672cztM0_level2.fits modeM0/AS1A12_029T02_9000005558_40672cztM0_level2_quad_clean.evt
Size (bytes)926,792,640228,749,760
Size883.9 MB 218.2 MB
Events in quadrant A7,421,2091,562,336
Events in quadrant B7,182,9601,597,383
Events in quadrant C10,004,3971,500,390
Events in quadrant D8,581,3281,271,116

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310474
B0309833
C0388353
D0355673

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02920
B02920
C02920
D02920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14407310.215173%
B144071060.735753%
C144074743.290067%
D14407164611.425002%

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 18736 14410 6 6 0.03% 0.04%
B 18736 14410 43 43 0.23% 0.30%
C 18736 14410 497 497 2.65% 3.45%
D 18736 14410 304 304 1.62% 2.11%

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 1119263 3458.81 1579 1547 323.2
A 12 189 114731 350.25 1579 1547 323.2
A 2 79 62651 189.09 1579 1547 323.2
B 0 229 338089 1116.6 1570 1526 301.4
B 0 190 229995 757.98 1570 1526 301.4
B 5 255 149608 491.29 1570 1526 301.4
C 9 187 1967438 5490.28 1532 1540 358.1
C 14 254 1303998 3637.45 1532 1540 358.1
C 15 214 606161 1688.56 1532 1540 358.1
D 12 227 1285329 3618.71 1446 1407 354.8
D 2 250 515738 1449.63 1446 1407 354.8
D 12 191 427840 1201.89 1446 1407 354.8

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