ASTROSAT CZTI

Data Quality Report

Orbit 55629

Creation date: 2026-01-13T15:13:05.575734
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_021T06_9000006538_55629cztM0_level2.fits modeM0/AS1A14_021T06_9000006538_55629cztM0_level2_quad_clean.evt
Size (bytes)1,319,650,560233,305,920
Size1.2 GB 222.5 MB
Events in quadrant A15,026,8691,432,057
Events in quadrant B9,079,4731,683,576
Events in quadrant C8,859,2891,477,498
Events in quadrant D14,529,5921,264,398

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0568933
B0400223
C0401713
D0562133

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03540
B03540
C03540
D03540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17499189210.812046%
B175002601.485714%
C174994432.531573%
D17499204311.674953%

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 18914 17501 1897 1897 10.03% 10.84%
B 18915 17500 106 106 0.56% 0.61%
C 18914 17502 381 381 2.01% 2.18%
D 18914 17500 1945 1945 10.28% 11.11%

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 12 115 5247386 12119.36 1746 1700 432.8
A 15 32 1445905 3336.61 1746 1700 432.8
A 0 8 522067 1202.23 1746 1700 432.8
B 7 0 597320 1579.07 1768 1703 377.2
B 5 185 466369 1231.9 1768 1703 377.2
B 1 159 373133 984.71 1768 1703 377.2
C 15 148 591751 1253.18 1730 1713 470.8
C 6 223 484958 1026.36 1730 1713 470.8
C 12 2 320361 676.78 1730 1713 470.8
D 11 129 6169344 13179.61 1656 1581 468.0
D 8 245 572531 1220.04 1656 1581 468.0
D 6 46 368500 784.05 1656 1581 468.0

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