ASTROSAT CZTI

Data Quality Report

Orbit 56938

Creation date: 2026-04-07T07:53:34.672561
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_083T14_9000006564_56938cztM0_level2.fits modeM0/AS1A14_083T14_9000006564_56938cztM0_level2_quad_clean.evt
Size (bytes)878,872,32074,407,680
Size838.2 MB 71.0 MB
Events in quadrant A5,011,263611,916
Events in quadrant B7,795,668534,364
Events in quadrant C3,179,275606,046
Events in quadrant D16,013,03221,531

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197425
B0280582
C0147182
D0522532

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68703575.196507%
B6870177625.851528%
C6870390.567686%
D6870667897.205240%

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 7740 6870 272 272 3.51% 3.96%
B 7740 6870 1342 1342 17.34% 19.53%
C 7740 6871 30 30 0.39% 0.44%
D 7739 6869 6018 6018 77.76% 87.61%

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 2024559 11638.35 705 686 173.9
A 10 251 89507 510.77 705 686 173.9
A 8 249 34935 196.95 705 686 173.9
B 5 185 2262126 17067.85 615 593 132.5
B 10 16 2056829 15518.46 615 593 132.5
B 5 172 796629 6007.7 615 593 132.5
C 13 3 221590 1162.73 698 691 190.0
C 14 254 87044 454.53 698 691 190.0
C 12 112 59893 311.62 698 691 190.0
D 12 33 13989314 151628.85 312 296 92.3
D 8 240 519537 5628.12 312 296 92.3
D 3 12 101448 1096.4 312 296 92.3

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