ASTROSAT CZTI

Data Quality Report

Orbit 58760

Creation date: 2026-08-07T21:08:38.248649
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_106T01_9000006596_58760cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58760cztM0_level2_quad_clean.evt
Size (bytes)1,313,985,600227,551,680
Size1.2 GB 217.0 MB
Events in quadrant A7,389,6271,609,981
Events in quadrant B9,481,4411,678,884
Events in quadrant C9,897,6821,472,104
Events in quadrant D20,649,3681,039,973

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0329203
B0387544
C0402513
D0721093

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03220
C03220
D03220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A157843021.913330%
B157835893.731863%
C157847935.024075%
D15784467929.643943%

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 19254 15787 15 15 0.08% 0.10%
B 19253 15786 195 195 1.01% 1.24%
C 19254 15787 540 540 2.80% 3.42%
D 19254 15787 3892 3892 20.21% 24.65%

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 80917 176.99 1809 1764 447.2
A 3 245 47307 101.84 1809 1764 447.2
A 10 251 43527 93.39 1809 1764 447.2
B 10 16 531676 1428.78 1760 1697 370.9
B 0 171 434170 1165.91 1760 1697 370.9
B 8 234 284297 761.87 1760 1697 370.9
C 15 147 1495079 3173.53 1722 1706 470.6
C 13 3 301375 636.82 1722 1706 470.6
C 14 96 273526 577.64 1722 1706 470.6
D 11 129 10624553 24643.38 1509 1441 431.1
D 12 110 2710718 6284.95 1509 1441 431.1
D 2 120 355970 822.43 1509 1441 431.1

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

TCT plots

Parameter TCT0 TCT_healed
Tct