ASTROSAT CZTI

Data Quality Report

Orbit 41932

Creation date: 2024-06-27T22:34:39.066708
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_099T03_9000005720_41932cztM0_level2.fits modeM0/AS1A12_099T03_9000005720_41932cztM0_level2_quad_clean.evt
Size (bytes)1,866,041,280204,635,520
Size1.7 GB 195.2 MB
Events in quadrant A13,572,0651,489,089
Events in quadrant B7,650,7051,672,601
Events in quadrant C12,223,1891,457,725
Events in quadrant D34,441,836513,853

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0503423
B0332473
C0459843
D01124783

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03140
B03140
C03140
D03140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15384176311.459958%
B15384770.500520%
C1538414039.119865%
D153841076569.975299%

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 19591 15387 1432 1432 7.31% 9.31%
B 19591 15387 40 40 0.20% 0.26%
C 19591 15387 1392 1392 7.11% 9.05%
D 19591 15387 10912 10912 55.70% 70.92%

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 14 24 6136594 18956.31 1587 1552 323.6
A 10 83 1239421 3824.82 1587 1552 323.6
A 14 250 22901 65.97 1587 1552 323.6
B 0 229 625118 1978.62 1645 1597 315.1
B 0 156 238885 752.99 1645 1597 315.1
B 5 255 110712 346.26 1645 1597 315.1
C 4 254 3831187 10676.14 1550 1558 358.7
C 0 10 1028052 2861.63 1550 1558 358.7
C 14 254 661866 1840.79 1550 1558 358.7
D 12 79 29741000 122393.49 988 955 243.0
D 13 249 378101 1552.12 988 955 243.0
D 12 6 141401 578.0 988 955 243.0

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