ASTROSAT CZTI

Data Quality Report

Orbit 55280

Creation date: 2025-12-16T19:11:16.467586
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_009T01_9000006534_55280cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55280cztM0_level2_quad_clean.evt
Size (bytes)1,206,777,600274,720,320
Size1.1 GB 262.0 MB
Events in quadrant A8,902,3591,767,864
Events in quadrant B9,975,0851,899,488
Events in quadrant C10,305,4541,718,873
Events in quadrant D13,959,5991,572,539

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03980
B03980
C03980
D03980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0418262
B0447112
C0455322
D0549582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A197284392.225264%
B197285712.894363%
C197294792.427898%
D1972910725.433626%

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 20678 19729 100 100 0.48% 0.51%
B 20678 19730 33 33 0.16% 0.17%
C 20679 19731 278 278 1.34% 1.41%
D 20679 19731 842 842 4.07% 4.27%

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 8 471604 923.59 2083 2026 508.4
A 7 243 144639 280.5 2083 2026 508.4
A 4 3 63824 121.55 2083 2026 508.4
B 2 249 1305574 2960.62 2061 1980 440.3
B 1 159 161943 363.3 2061 1980 440.3
B 5 185 120927 270.14 2061 1980 440.3
C 13 3 990500 1792.23 2029 2017 551.5
C 12 252 272365 490.17 2029 2017 551.5
C 10 22 270080 486.03 2029 2017 551.5
D 7 70 1790391 3239.45 1991 1906 552.1
D 11 129 1458064 2637.52 1991 1906 552.1
D 2 31 682383 1232.54 1991 1906 552.1

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