ASTROSAT CZTI

Data Quality Report

Orbit 51920

Creation date: 2025-05-04T13:26:31.026286
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_51920cztM0_level2.fits modeM0/AS1C09_011T05_9000006466_51920cztM0_level2_quad_clean.evt
Size (bytes)999,388,80081,982,080
Size953.1 MB 78.2 MB
Events in quadrant A7,732,650595,110
Events in quadrant B6,196,742647,284
Events in quadrant C8,318,186506,677
Events in quadrant D14,186,977228,642

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0279590
B0235410
C0298520
D0471690

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7241102814.196934%
B724196613.340699%
C7241183225.300373%
D7242476965.851975%

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 7240 7240 948 948 13.09% 13.09%
B 7241 7241 691 691 9.54% 9.54%
C 7241 7241 1542 1542 21.30% 21.30%
D 7242 7242 4017 4017 55.47% 55.47%

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 7 64 2461393 14232.6 703 685 172.9
A 12 3 825981 4773.47 703 685 172.9
A 15 174 513460 2965.86 703 685 172.9
B 4 206 2385523 15829.5 697 673 150.7
B 5 185 212996 1409.3 697 673 150.7
B 10 254 122648 809.61 697 673 150.7
C 15 224 4359915 25001.54 632 627 174.4
C 15 158 413291 2366.73 632 627 174.4
C 13 3 324408 1856.96 632 627 174.4
D 15 94 7702224 62406.37 390 375 123.4
D 6 42 2327996 18860.19 390 375 123.4
D 3 12 628763 5091.69 390 375 123.4

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