ASTROSAT CZTI

Data Quality Report

Orbit 58455

Creation date: 2026-07-18T08:15:00.906882
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_045T01_9000006590_58455cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58455cztM0_level2_quad_clean.evt
Size (bytes)414,734,400101,640,960
Size395.5 MB 96.9 MB
Events in quadrant A3,578,310671,367
Events in quadrant B4,074,222712,354
Events in quadrant C3,123,403648,003
Events in quadrant D4,057,812581,408

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152803
B0165033
C0140993
D0167843

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66631221.831007%
B66632894.337386%
C6663620.930512%
D66623144.713299%

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 7863 6664 21 21 0.27% 0.32%
B 7863 6664 149 149 1.89% 2.24%
C 7863 6664 20 20 0.25% 0.30%
D 7862 6662 258 258 3.28% 3.87%

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 14 286420 1523.8 758 739 187.5
A 12 80 195400 1038.31 758 739 187.5
A 13 248 47580 249.85 758 739 187.5
B 4 201 444695 2766.42 753 727 160.5
B 5 172 324315 2016.31 753 727 160.5
B 8 128 74969 462.61 753 727 160.5
C 6 223 81584 396.17 740 735 204.1
C 14 254 31598 151.23 740 735 204.1
C 14 245 28436 135.74 740 735 204.1
D 6 239 589266 2888.86 708 676 203.7
D 8 240 497828 2440.08 708 676 203.7
D 5 173 48118 232.85 708 676 203.7

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