ASTROSAT CZTI

Data Quality Report

Orbit 58818

Creation date: 2026-08-11T18:12:14.846968
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_58818cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58818cztM0_level2_quad_clean.evt
Size (bytes)541,321,92088,482,240
Size516.2 MB 84.4 MB
Events in quadrant A4,545,624600,025
Events in quadrant B3,566,283661,101
Events in quadrant C3,784,332580,755
Events in quadrant D7,674,653417,599

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175691
B0145451
C0152371
D0268681

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60134737.866290%
B60132454.074505%
C60122293.809049%
D6013179029.768834%

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 7188 6014 261 261 3.63% 4.34%
B 7188 6014 74 74 1.03% 1.23%
C 7187 6013 150 150 2.09% 2.49%
D 7188 6014 1647 1647 22.91% 27.39%

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 10 251 988275 5728.7 694 676 172.4
A 10 248 478066 2769.17 694 676 172.4
A 13 248 236683 1368.99 694 676 172.4
B 5 185 256008 1728.49 687 664 147.7
B 5 172 94985 638.48 687 664 147.7
B 4 158 82792 555.95 687 664 147.7
C 13 3 503988 2726.82 671 665 184.6
C 9 38 341326 1845.57 671 665 184.6
C 6 223 91171 490.33 671 665 184.6
D 12 110 3603275 20862.52 610 583 172.7
D 2 249 876558 5072.61 610 583 172.7
D 13 105 326571 1887.73 610 583 172.7

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