ASTROSAT CZTI

Data Quality Report

Orbit 52120

Creation date: 2025-05-18T00:11:02.795347
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_011T07_9000006470_52120cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52120cztM0_level2_quad_clean.evt
Size (bytes)874,932,48064,800,000
Size834.4 MB 61.8 MB
Events in quadrant A2,926,594563,715
Events in quadrant B5,248,745590,700
Events in quadrant C8,237,094400,736
Events in quadrant D15,525,916841

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125501
B0197391
C0284761
D0499413

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5799991.707191%
B58003045.241379%
C5800193633.379310%
D5799579399.896534%

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 6949 5800 35 35 0.50% 0.60%
B 6950 5801 141 141 2.03% 2.43%
C 6950 5801 1460 1460 21.01% 25.17%
D 6948 5798 5647 5647 81.28% 97.40%

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 3 203470 1318.87 614 599 153.8
A 14 254 55182 354.84 614 599 153.8
A 7 206 36237 231.68 614 599 153.8
B 5 172 1576622 12357.13 604 583 127.5
B 4 171 536895 4205.02 604 583 127.5
B 0 216 121191 945.64 604 583 127.5
C 15 224 4279355 30164.63 517 513 141.8
C 2 239 815133 5742.84 517 513 141.8
C 13 3 650344 4581.12 517 513 141.8
D 15 94 11075624 290449.66 127 120 38.1
D 6 42 3264604 85609.49 127 120 38.1
D 8 176 200175 5246.34 127 120 38.1

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