ASTROSAT CZTI

Data Quality Report

Orbit 58809

Creation date: 2026-08-11T04:15:19.685191
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_58809cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58809cztM0_level2_quad_clean.evt
Size (bytes)641,364,480107,913,600
Size611.7 MB 102.9 MB
Events in quadrant A3,840,363747,724
Events in quadrant B4,677,174779,304
Events in quadrant C6,526,579613,720
Events in quadrant D8,089,913582,497

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170690
B0193721
C0249330
D0293970

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7826841.073345%
B78262923.731153%
C7826118115.090723%
D7826119215.231280%

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 7825 7825 75 75 0.96% 0.96%
B 7826 7826 224 224 2.86% 2.86%
C 7826 7826 1117 1117 14.27% 14.27%
D 7826 7826 1150 1150 14.69% 14.69%

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 10 251 187014 868.91 857 835 214.3
A 15 233 135589 628.9 857 835 214.3
A 13 248 97751 452.31 857 835 214.3
B 4 236 315170 1727.55 842 811 182.0
B 5 172 276336 1514.14 842 811 182.0
B 2 249 258171 1414.31 842 811 182.0
C 15 198 2639946 12824.8 751 745 205.8
C 12 252 255524 1238.06 751 745 205.8
C 13 3 233740 1132.2 751 745 205.8
D 12 110 4164131 18675.29 781 745 222.9
D 2 249 341071 1526.56 781 745 222.9
D 8 129 136475 608.83 781 745 222.9

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