ASTROSAT CZTI

Data Quality Report

Orbit 58852

Creation date: 2026-08-14T12:48:55.085022
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_106T01_9000006596_58852cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58852cztM0_level2_quad_clean.evt
Size (bytes)750,597,12089,340,480
Size715.8 MB 85.2 MB
Events in quadrant A15,258,15045,031
Events in quadrant B4,531,330771,745
Events in quadrant C3,510,448699,777
Events in quadrant D3,892,645660,424

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0505860
B0185840
C0160320
D0169520

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7590721395.032938%
B75902343.083004%
C7589420.553433%
D7590320.421607%

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 7589 7589 3926 3926 51.73% 51.73%
B 7590 7590 143 143 1.88% 1.88%
C 7589 7589 35 35 0.46% 0.46%
D 7590 7590 21 21 0.28% 0.28%

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 3 95 12536996 274730.95 177 172 45.6
A 15 233 1212755 26572.45 177 172 45.6
A 14 238 501295 10981.57 177 172 45.6
B 5 185 421686 2431.47 817 786 173.1
B 2 249 390205 2249.61 817 786 173.1
B 4 236 203709 1172.25 817 786 173.1
C 12 252 110152 490.89 810 804 222.8
C 14 254 87363 388.58 810 804 222.8
C 3 233 47408 209.22 810 804 222.8
D 15 238 309937 1325.53 814 776 233.2
D 6 239 150950 643.87 814 776 233.2
D 12 110 70125 297.33 814 776 233.2

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

TCT plots

Parameter TCT0 TCT_healed
Tct