ASTROSAT CZTI

Data Quality Report

Orbit 51834

Creation date: 2025-04-28T18:28:38.289774
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_011T05_9000006466_51834cztM0_level2.fits modeM0/AS1C09_011T05_9000006466_51834cztM0_level2_quad_clean.evt
Size (bytes)882,642,24095,135,040
Size841.8 MB 90.7 MB
Events in quadrant A9,706,970520,788
Events in quadrant B6,109,370730,344
Events in quadrant C7,540,494594,449
Events in quadrant D8,732,277508,999

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340150
B0233670
C0276210
D0312186

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7555201726.697551%
B75564405.823187%
C7556100313.274219%
D7555151720.079418%

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 7555 7555 1663 1663 22.01% 22.01%
B 7556 7556 269 269 3.56% 3.56%
C 7556 7556 868 868 11.49% 11.49%
D 7555 7555 1304 1304 17.26% 17.26%

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 13 248 3452685 20191.15 684 666 171.0
A 12 3 1105469 6462.08 684 666 171.0
A 11 3 800500 4678.3 684 666 171.0
B 5 32 611411 3763.23 763 737 162.3
B 5 185 547228 3367.7 763 737 162.3
B 1 223 408280 2511.45 763 737 162.3
C 0 193 1342691 6858.22 714 706 195.7
C 15 192 611572 3121.83 714 706 195.7
C 12 254 391076 1994.98 714 706 195.7
D 11 129 2898736 15418.99 674 650 188.0
D 12 6 932356 4957.05 674 650 188.0
D 0 18 666438 3542.26 674 650 188.0

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