ASTROSAT CZTI

Data Quality Report

Orbit 59075

Creation date: 2026-08-29T02:12:44.410498
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_004T02_9000006600_59075cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59075cztM0_level2_quad_clean.evt
Size (bytes)758,620,80080,369,280
Size723.5 MB 76.6 MB
Events in quadrant A3,379,412649,545
Events in quadrant B3,407,732688,084
Events in quadrant C3,133,754619,948
Events in quadrant D17,641,61310,612

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147242
B0148413
C0142072
D0567802

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66701141.709145%
B66691372.054281%
C6669851.274554%
D6669658198.680462%

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 7650 6671 67 67 0.88% 1.00%
B 7649 6670 93 93 1.22% 1.39%
C 7649 6670 37 37 0.48% 0.55%
D 7648 6668 6458 6458 84.44% 96.85%

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 200254 1111.7 728 709 179.5
A 10 251 112309 621.74 728 709 179.5
A 0 24 99162 548.5 728 709 179.5
B 4 171 286229 1858.95 722 695 153.6
B 4 236 119208 771.57 722 695 153.6
B 4 201 35124 224.15 722 695 153.6
C 15 198 130732 663.63 715 708 195.9
C 12 252 54055 272.28 715 708 195.9
C 6 223 45074 226.44 715 708 195.9
D 12 1 14841165 344455.19 146 139 43.1
D 2 62 1919953 44558.23 146 139 43.1
D 6 239 179385 4160.24 146 139 43.1

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

TCT plots

Parameter TCT0 TCT_healed
Tct