ASTROSAT CZTI

Data Quality Report

Orbit 57773

Creation date: 2026-06-02T18:34:50.501398
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_083T16_9000006580_57773cztM0_level2.fits modeM0/AS1A14_083T16_9000006580_57773cztM0_level2_quad_clean.evt
Size (bytes)1,951,136,640387,089,280
Size1.8 GB 369.2 MB
Events in quadrant A13,375,4002,593,690
Events in quadrant B15,192,0292,751,895
Events in quadrant C26,355,9192,216,089
Events in quadrant D15,209,6712,297,004

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05542
B05542
C05542
D05531

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06009598
B064564115
C097430218
D065125121

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A270644281.581437%
B270627192.656862%
C27064346412.799291%
D270656042.231665%

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 44497 27076 203 203 0.46% 0.75%
B 44498 27076 305 305 0.69% 1.13%
C 44498 27073 2584 2584 5.81% 9.54%
D 44498 27077 495 495 1.11% 1.83%

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 3 14 1187364 1701.09 2845 2777 696.4
A 13 248 845203 1209.74 2845 2777 696.4
A 3 61 177976 251.59 2845 2777 696.4
B 4 80 1208407 2043.46 2815 2708 590.0
B 5 185 656837 1108.64 2815 2708 590.0
B 0 213 420253 707.67 2815 2708 590.0
C 15 224 7497728 10490.48 2639 2616 714.5
C 9 38 7179325 10044.83 2639 2616 714.5
C 12 252 749704 1045.66 2639 2616 714.5
D 12 248 844988 1092.35 2738 2610 771.2
D 2 249 721513 932.23 2738 2610 771.2
D 3 12 563898 727.85 2738 2610 771.2

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