ASTROSAT CZTI

Data Quality Report

Orbit 20211204_A11_065T07_9000004798_level2

Creation date: 2025-12-30T18:09:59.948132
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/AS1A11_065T07_9000004798cztM0_level2.fits modeM0/AS1A11_065T07_9000004798cztM0_level2_quad_clean.evt
Size (bytes)371,848,320260,205,120
Size354.6 MB 248.2 MB
Events in quadrant A2,338,9681,400,045
Events in quadrant B2,180,4081,372,876
Events in quadrant C2,212,1841,314,802
Events in quadrant D1,904,7401,165,961

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01710
B01710
C01710
D01710

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07800
B07800
C07800
D07800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0771080
B01005510
C0951590
D01280940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A38220420.109890%
B3822019505.102041%
C3822012753.335950%
D3822013273.472004%

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 55194 38219 0 0 0.00% 0.00%
B 55195 38207 0 0 0.00% 0.00%
C 55195 38197 0 0 0.00% 0.00%
D 55195 38209 0 0 0.00% 0.00%

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 0 29 1937 8.95 611 574 152.2
A 7 110 1887 8.62 611 574 152.2
A 9 19 1823 8.2 611 574 152.2
B 2 9 1881 11.54 578 553 115.1
B 3 80 1723 10.16 578 553 115.1
B 2 8 1548 8.64 578 553 115.1
C 1 81 1834 8.62 584 551 148.8
C 1 80 1736 7.96 584 551 148.8
C 1 65 1496 6.35 584 551 148.8
D 10 189 1439 6.42 546 500 146.2
D 7 3 1421 6.3 546 500 146.2
D 6 62 1394 6.12 546 500 146.2

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