ASTROSAT CZTI

Data Quality Report

Orbit 50140

Creation date: 2025-01-04T16:21:15.458868
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_50140cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50140cztM0_level2_quad_clean.evt
Size (bytes)907,030,08067,829,760
Size865.0 MB 64.7 MB
Events in quadrant A6,754,077535,150
Events in quadrant B3,554,416649,431
Events in quadrant C13,266,31434,135
Events in quadrant D9,502,093385,815

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244551
B0148961
C0438001
D0327381

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6430102215.894246%
B6430991.539658%
C6430610294.898911%
D6431204631.814648%

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 7245 6430 626 626 8.64% 9.74%
B 7245 6431 23 23 0.32% 0.36%
C 7244 6429 3650 3650 50.39% 56.77%
D 7246 6431 1844 1844 25.45% 28.67%

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 8 8 1363024 8294.07 648 630 164.3
A 10 253 778754 4737.12 648 630 164.3
A 6 250 759251 4618.38 648 630 164.3
B 0 229 108569 760.33 663 642 141.9
B 4 206 107299 751.38 663 642 141.9
B 10 16 88801 621.07 663 642 141.9
C 4 111 5690806 125628.48 149 148 45.3
C 15 214 4313073 95213.28 149 148 45.3
C 15 230 792396 17489.88 149 148 45.3
D 15 168 1759633 10827.54 562 543 162.5
D 15 106 862905 5308.01 562 543 162.5
D 14 66 633993 3899.01 562 543 162.5

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