ASTROSAT CZTI

Data Quality Report

Orbit 58717

Creation date: 2026-08-04T23:11:51.422818
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_004T06_9000006594_58717cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58717cztM0_level2_quad_clean.evt
Size (bytes)488,724,48079,093,440
Size466.1 MB 75.4 MB
Events in quadrant A4,207,988543,042
Events in quadrant B3,101,643576,355
Events in quadrant C2,753,431524,314
Events in quadrant D7,603,700368,993

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184652030
B0148791887
C0137761659
D0289522667

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012316
B012513
C012618
D012315

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118
B0118
C0107
D01010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54601031.886447%
B5474951.735477%
C5471350.639737%
D5448160829.515419%

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 7232 5503 76 76 1.05% 1.38%
B 7243 5528 65 65 0.90% 1.18%
C 7228 5520 45 45 0.62% 0.82%
D 7233 5496 1528 1528 21.13% 27.80%

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 1203257 8278.24 582 568 145.3
A 10 17 400481 2752.64 582 568 145.3
A 10 251 274018 1882.19 582 568 145.3
B 5 172 345447 2766.81 576 556 124.7
B 8 234 138332 1105.27 576 556 124.7
B 8 128 83795 667.76 576 556 124.7
C 13 3 166931 1050.37 574 570 158.4
C 14 254 90202 565.92 574 570 158.4
C 12 252 75962 476.01 574 570 158.4
D 11 129 4665716 31838.14 504 481 146.5
D 2 62 363801 2479.5 504 481 146.5
D 2 249 180758 1230.31 504 481 146.5

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