ASTROSAT CZTI

Data Quality Report

Orbit 58298

Creation date: 2026-07-07T19:18:24.190783
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_044T03_9000006588_58298cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58298cztM0_level2_quad_clean.evt
Size (bytes)746,971,20087,863,040
Size712.4 MB 83.8 MB
Events in quadrant A3,495,426676,547
Events in quadrant B15,295,421200,551
Events in quadrant C4,005,064660,743
Events in quadrant D4,288,443615,699

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158100
B0504870
C0172110
D0175480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72762473.394722%
B7276567277.954920%
C72771652.267418%
D72762182.996152%

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 7276 7276 34 34 0.47% 0.47%
B 7276 7276 4930 4930 67.76% 67.76%
C 7277 7277 84 84 1.15% 1.15%
D 7276 7276 61 61 0.84% 0.84%

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 7 237 122764 607.32 817 794 200.8
A 3 245 46220 226.19 817 794 200.8
A 10 251 31091 150.86 817 794 200.8
B 10 128 12123359 119086.9 469 452 101.8
B 3 238 651440 6394.85 469 452 101.8
B 2 249 183759 1800.68 469 452 101.8
C 4 5 514120 2358.02 795 787 217.7
C 9 38 100400 457.58 795 787 217.7
C 12 249 75962 345.32 795 787 217.7
D 11 129 296183 1313.87 800 764 224.8
D 2 249 155885 689.9 800 764 224.8
D 12 248 106307 469.4 800 764 224.8

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