ASTROSAT CZTI

Data Quality Report

Orbit 58153

Creation date: 2026-06-30T10:22:08.439839
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_042T02_9000006586_58153cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58153cztM0_level2_quad_clean.evt
Size (bytes)767,615,04098,179,200
Size732.1 MB 93.6 MB
Events in quadrant A3,545,888766,670
Events in quadrant B15,801,024260,380
Events in quadrant C4,199,143723,762
Events in quadrant D4,263,024680,560

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163152
B0523332
C0181343
D0181242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7793430.551777%
B7793550370.614654%
C7792720.924025%
D77921181.514374%

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 7823 7794 6 6 0.08% 0.08%
B 7822 7792 5068 5068 64.79% 65.04%
C 7822 7793 57 57 0.73% 0.73%
D 7822 7792 91 91 1.16% 1.17%

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 13 248 42505 189.21 889 866 220.1
A 4 3 19186 83.25 889 866 220.1
A 2 143 14642 62.6 889 866 220.1
B 10 128 13241163 137983.13 442 425 96.0
B 2 249 458845 4777.24 442 425 96.0
B 4 201 107111 1111.79 442 425 96.0
C 12 252 415311 1763.79 854 844 235.0
C 9 38 165508 700.74 854 844 235.0
C 12 254 126514 534.8 854 844 235.0
D 8 240 270376 1129.7 853 817 238.6
D 6 239 102787 427.35 853 817 238.6
D 12 110 98333 408.68 853 817 238.6

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