ASTROSAT CZTI

Data Quality Report

Orbit 42874

Creation date: 2024-06-27T22:45:14.725960
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_138T01_9000005828_42874cztM0_level2.fits modeM0/AS1T05_138T01_9000005828_42874cztM0_level2_quad_clean.evt
Size (bytes)1,077,477,120246,579,840
Size1.0 GB 235.2 MB
Events in quadrant A9,005,4571,630,386
Events in quadrant B7,220,5291,693,460
Events in quadrant C10,857,6191,627,210
Events in quadrant D11,602,7961,445,759

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0358344
B0322034
C0420924
D0445804

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0510
C0510
D0510

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A154852031.310946%
B15485620.400387%
C154857184.636745%
D1548510997.097191%

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 19754 15487 153 153 0.77% 0.99%
B 19754 15488 40 40 0.20% 0.26%
C 19754 15488 696 696 3.52% 4.49%
D 19754 15488 1054 1054 5.34% 6.81%

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 1558991 4476.28 1696 1662 347.9
A 10 255 372132 1064.85 1696 1662 347.9
A 15 237 266847 762.23 1696 1662 347.9
B 5 255 137439 415.72 1689 1638 326.7
B 15 85 134026 405.28 1689 1638 326.7
B 0 190 122029 368.55 1689 1638 326.7
C 0 207 1461871 3765.37 1652 1663 387.8
C 14 254 1178866 3035.59 1652 1663 387.8
C 15 214 611006 1571.28 1652 1663 387.8
D 2 249 1295125 3224.08 1631 1589 401.2
D 10 118 1050013 2613.15 1631 1589 401.2
D 12 6 854315 2125.38 1631 1589 401.2

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