ASTROSAT CZTI

Data Quality Report

Orbit 51935

Creation date: 2025-05-05T13:54:46.844979
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_51935cztM0_level2.fits modeM0/AS1C09_011T05_9000006466_51935cztM0_level2_quad_clean.evt
Size (bytes)1,072,877,76082,673,280
Size1023.2 MB 78.8 MB
Events in quadrant A8,188,392591,635
Events in quadrant B4,611,997713,175
Events in quadrant C12,661,305365,487
Events in quadrant D13,685,574320,065

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0294540
B0189530
C0427300
D0456980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7354115815.746532%
B73552773.766145%
C7355367850.006798%
D7355384252.236574%

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 7354 7354 1052 1052 14.31% 14.31%
B 7355 7355 223 223 3.03% 3.03%
C 7355 7355 3459 3459 47.03% 47.03%
D 7354 7354 3851 3851 52.37% 52.37%

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 4 159 1910578 10933.74 703 684 174.7
A 7 64 1003440 5740.56 703 684 174.7
A 12 3 929992 5320.09 703 684 174.7
B 4 206 608579 3869.41 736 712 157.1
B 10 44 190159 1205.94 736 712 157.1
B 4 171 153977 975.62 736 712 157.1
C 15 224 6622528 42327.7 554 550 156.4
C 15 230 1636820 10459.04 554 550 156.4
C 0 193 767706 4903.66 554 550 156.4
D 12 17 4011493 27183.21 509 486 147.6
D 15 94 2092351 14176.89 509 486 147.6
D 0 33 1951369 13221.43 509 486 147.6

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