ASTROSAT CZTI

Data Quality Report

Orbit 57085

Creation date: 2026-04-17T03:34:46.354547
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_083T10_9000006566_57085cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57085cztM0_level2_quad_clean.evt
Size (bytes)601,220,16082,054,080
Size573.4 MB 78.3 MB
Events in quadrant A3,008,535600,056
Events in quadrant B3,292,122632,450
Events in quadrant C2,866,266571,271
Events in quadrant D12,595,073237,674

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135631
B0142551
C0133591
D0418171

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6342701.103753%
B63422063.248187%
C6342340.536108%
D6342370958.483128%

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 7282 6343 24 24 0.33% 0.38%
B 7282 6343 80 80 1.10% 1.26%
C 7282 6343 14 14 0.19% 0.22%
D 7282 6343 3685 3685 50.60% 58.10%

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 192583 1141.84 675 657 168.1
A 4 249 80966 477.79 675 657 168.1
A 3 14 60186 354.16 675 657 168.1
B 10 16 393031 2751.76 659 634 142.6
B 4 171 156130 1090.45 659 634 142.6
B 0 63 36689 252.84 659 634 142.6
C 14 254 98483 549.82 653 647 177.9
C 6 223 60657 337.24 653 647 177.9
C 1 16 32491 178.96 653 647 177.9
D 15 142 7409916 55030.9 471 450 134.6
D 12 33 2675661 19869.08 471 450 134.6
D 2 249 390670 2898.21 471 450 134.6

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