ASTROSAT CZTI

Data Quality Report

Orbit 59030

Creation date: 2026-08-27T21:53:50.327706
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_59030cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59030cztM0_level2_quad_clean.evt
Size (bytes)2,313,262,080209,914,560
Size2.2 GB 200.2 MB
Events in quadrant A13,632,3491,688,583
Events in quadrant B11,644,4711,767,132
Events in quadrant C32,532,749691,120
Events in quadrant D26,418,292954,475

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0528783
B0474553
C01087933
D0910633

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A181797243.982617%
B1817910705.885912%
C181791108560.976951%
D18179734840.420265%

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 19849 18182 542 542 2.73% 2.98%
B 19849 18182 682 682 3.44% 3.75%
C 19849 18182 10951 10951 55.17% 60.23%
D 19849 18182 5320 5320 26.80% 29.26%

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 15 233 2519395 5186.88 1970 1918 485.4
A 0 24 1670220 3437.28 1970 1918 485.4
A 10 251 1097257 2256.78 1970 1918 485.4
B 4 236 1617866 3932.09 1932 1862 411.0
B 2 249 1020710 2479.08 1932 1862 411.0
B 5 185 426654 1033.61 1932 1862 411.0
C 15 219 25826960 69489.14 1368 1352 371.6
C 1 16 290987 779.32 1368 1352 371.6
C 15 147 280311 750.6 1368 1352 371.6
D 12 1 14047437 34964.56 1405 1340 401.7
D 12 110 4795119 11933.02 1405 1340 401.7
D 2 62 981987 2441.1 1405 1340 401.7

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