ASTROSAT CZTI

Data Quality Report

Orbit 54460

Creation date: 2025-10-22T13:09:24.025763
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/AS1A14_126T19_9000006518_54460cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54460cztM0_level2_quad_clean.evt
Size (bytes)634,095,36074,206,080
Size604.7 MB 70.8 MB
Events in quadrant A2,979,919559,675
Events in quadrant B3,229,950594,054
Events in quadrant C4,590,668521,357
Events in quadrant D12,208,362155,699

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131791
B0141811
C0178481
D0404121

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5959570.956536%
B59601502.516779%
C59602884.832215%
D5960416769.916107%

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 6919 5960 28 28 0.40% 0.47%
B 6920 5961 77 77 1.11% 1.29%
C 6920 5961 275 275 3.97% 4.61%
D 6919 5959 3731 3731 53.92% 62.61%

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 9 427418 2766.93 622 605 154.3
A 4 3 33319 212.08 622 605 154.3
A 8 6 27209 172.47 622 605 154.3
B 5 185 425370 3214.21 611 589 132.2
B 5 172 174886 1318.86 611 589 132.2
B 0 213 76113 571.47 611 589 132.2
C 7 64 1373881 8415.66 589 582 163.2
C 13 3 658145 4029.58 589 582 163.2
C 12 2 84217 512.52 589 582 163.2
D 8 176 5759313 70443.9 284 271 81.8
D 12 1 5074260 62064.42 284 271 81.8
D 10 181 64483 785.43 284 271 81.8

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