ASTROSAT CZTI

Data Quality Report

Orbit 56801

Creation date: 2026-03-29T02:01:12.164946
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_56801cztM0_level2.fits modeM0/AS1A14_083T03_9000006562_56801cztM0_level2_quad_clean.evt
Size (bytes)528,716,160100,995,840
Size504.2 MB 96.3 MB
Events in quadrant A4,044,501674,217
Events in quadrant B6,278,524636,045
Events in quadrant C4,874,390616,873
Events in quadrant D3,802,024618,027

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176073
B0238753
C0199223
D0166443

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73552663.616587%
B7356123616.802610%
C73565136.973899%
D7356991.345840%

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 7490 7355 145 145 1.94% 1.97%
B 7491 7356 632 632 8.44% 8.59%
C 7491 7357 473 473 6.31% 6.43%
D 7491 7359 61 61 0.81% 0.83%

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 4 249 440100 2284.67 774 752 192.3
A 10 251 275196 1427.15 774 752 192.3
A 3 14 246935 1280.19 774 752 192.3
B 4 206 2425521 15618.91 717 690 155.2
B 8 128 276018 1773.45 717 690 155.2
B 5 185 229116 1471.35 717 690 155.2
C 15 230 1600790 7949.69 732 724 201.3
C 13 3 130514 644.84 732 724 201.3
C 14 254 61823 303.56 732 724 201.3
D 8 160 232375 1092.22 754 719 212.1
D 2 249 221757 1042.15 754 719 212.1
D 2 31 66782 311.47 754 719 212.1

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