ASTROSAT CZTI

Data Quality Report

Orbit 56918

Creation date: 2026-04-05T23:24:24.283707
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_083T14_9000006564_56918cztM0_level2.fits modeM0/AS1A14_083T14_9000006564_56918cztM0_level2_quad_clean.evt
Size (bytes)1,128,790,08065,675,520
Size1.1 GB 62.6 MB
Events in quadrant A4,080,064637,385
Events in quadrant B5,381,856659,385
Events in quadrant C16,019,115205,745
Events in quadrant D15,768,1633,474

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169570
B0207910
C0522930
D0515143

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69231602.311137%
B69244666.730214%
C6924488770.580589%
D6923689599.595551%

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 6923 6923 134 134 1.94% 1.94%
B 6924 6924 383 383 5.53% 5.53%
C 6923 6923 5536 5536 79.97% 79.97%
D 6922 6922 5684 5684 82.11% 82.11%

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 7 64 634163 3589.86 705 687 176.5
A 10 251 513690 2907.15 705 687 176.5
A 4 249 84855 476.97 705 687 176.5
B 5 185 1781122 12076.32 689 667 147.4
B 5 172 269345 1822.37 689 667 147.4
B 7 0 191272 1292.82 689 667 147.4
C 9 38 13278638 93101.55 518 513 142.6
C 14 254 314058 2198.47 518 513 142.6
C 13 3 274998 1924.59 518 513 142.6
D 12 33 13622228 178386.2 256 242 76.4
D 5 222 356303 4662.78 256 242 76.4
D 8 240 285750 3738.85 256 242 76.4

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