ASTROSAT CZTI

Data Quality Report

Orbit 42584

Creation date: 2024-06-27T22:41:51.285544
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_061T07_9000005818_42584cztM0_level2.fits modeM0/AS1A12_061T07_9000005818_42584cztM0_level2_quad_clean.evt
Size (bytes)909,993,600247,052,160
Size867.8 MB 235.6 MB
Events in quadrant A8,153,0301,653,418
Events in quadrant B7,178,8271,690,930
Events in quadrant C7,565,9891,612,626
Events in quadrant D9,578,6691,446,982

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0334404
B0324014
C0325034
D0393865

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0450
D0450

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15590530.339962%
B15590780.500321%
C15590320.205260%
D155895073.252293%

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 19769 15593 16 16 0.08% 0.10%
B 19769 15593 40 40 0.20% 0.26%
C 19769 15593 21 21 0.11% 0.13%
D 19768 15592 427 427 2.16% 2.74%

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 1483014 4261.39 1693 1657 347.6
A 2 79 59014 165.0 1693 1657 347.6
A 7 3 48463 134.65 1693 1657 347.6
B 0 245 181432 559.67 1680 1634 321.3
B 4 141 148462 457.04 1680 1634 321.3
B 5 255 129607 398.35 1680 1634 321.3
C 15 214 636393 1660.75 1652 1662 382.2
C 5 250 268076 697.06 1652 1662 382.2
C 14 254 79885 204.67 1652 1662 382.2
D 1 52 1651549 4170.14 1631 1585 395.7
D 12 6 418178 1052.9 1631 1585 395.7
D 13 249 379730 955.73 1631 1585 395.7

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