ASTROSAT CZTI

Data Quality Report

Orbit 50318

Creation date: 2025-01-16T16:04:40.676333
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/AS1C09_003T01_9000006442_50318cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50318cztM0_level2_quad_clean.evt
Size (bytes)959,443,20062,349,120
Size915.0 MB 59.5 MB
Events in quadrant A9,155,868426,910
Events in quadrant B3,754,205600,851
Events in quadrant C10,390,360261,991
Events in quadrant D11,768,722193,130

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0312511
B0150641
C0348341
D0389501

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5788183631.720802%
B57882674.612992%
C5788322255.666897%
D5789389367.248229%

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 6903 5789 1594 1594 23.09% 27.53%
B 6903 5789 90 90 1.30% 1.55%
C 6903 5788 2689 2689 38.95% 46.46%
D 6904 5789 3362 3362 48.70% 58.08%

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 3 231 4561723 32322.13 565 551 141.1
A 6 250 612477 4336.33 565 551 141.1
A 0 98 558203 3951.73 565 551 141.1
B 4 206 820408 6156.77 618 598 133.2
B 5 185 79708 594.12 618 598 133.2
B 12 0 75091 559.44 618 598 133.2
C 4 111 5179868 45788.66 396 393 113.1
C 15 197 2398578 21200.93 396 393 113.1
C 1 29 202307 1785.0 396 393 113.1
D 7 96 3172715 27370.0 411 396 115.9
D 7 61 2250837 19416.26 411 396 115.9
D 12 6 1541375 13295.19 411 396 115.9

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