ASTROSAT CZTI

Data Quality Report

Orbit 56865

Creation date: 2026-04-02T12:16:35.043855
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_083T03_9000006562_56865cztM0_level2.fits modeM0/AS1A14_083T03_9000006562_56865cztM0_level2_quad_clean.evt
Size (bytes)2,049,462,720394,439,040
Size1.9 GB 376.2 MB
Events in quadrant A19,566,1182,540,511
Events in quadrant B15,944,3992,785,423
Events in quadrant C15,422,6722,470,318
Events in quadrant D22,723,7772,183,274

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05760
B05760
C05760
D05760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0786852
B0680762
C0667942
D0882363

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2854716795.881529%
B2854710993.849792%
C285478542.991558%
D28547304010.649105%

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 37678 28550 1313 1313 3.48% 4.60%
B 37678 28549 659 659 1.75% 2.31%
C 37678 28549 691 691 1.83% 2.42%
D 37678 28550 2840 2840 7.54% 9.95%

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 6516806 9004.81 2946 2873 723.4
A 3 62 1306322 1801.88 2946 2873 723.4
A 3 14 108621 146.18 2946 2873 723.4
B 5 185 2215347 3547.93 2933 2820 623.6
B 10 16 1123794 1797.55 2933 2820 623.6
B 7 0 207292 327.88 2933 2820 623.6
C 9 38 1823313 2320.58 2898 2870 784.5
C 1 16 525246 665.89 2898 2870 784.5
C 8 208 292168 368.78 2898 2870 784.5
D 2 249 7294760 9286.55 2789 2660 785.2
D 8 240 3406618 4334.97 2789 2660 785.2
D 5 173 236426 297.7 2789 2660 785.2

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