ASTROSAT CZTI

Data Quality Report

Orbit 59079

Creation date: 2026-08-29T07:15:52.157189
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_004T02_9000006600_59079cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59079cztM0_level2_quad_clean.evt
Size (bytes)717,791,04082,275,840
Size684.5 MB 78.5 MB
Events in quadrant A4,249,392626,349
Events in quadrant B3,305,647700,115
Events in quadrant C3,010,408629,647
Events in quadrant D15,510,13991,400

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171312
B0143042
C0134642
D0502712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63613465.439396%
B6361931.462034%
C6361240.377299%
D6360555087.264151%

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 7586 6361 279 279 3.68% 4.39%
B 7586 6362 44 44 0.58% 0.69%
C 7586 6362 10 10 0.13% 0.16%
D 7584 6359 5391 5391 71.08% 84.78%

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 15 233 594430 3442.62 697 679 172.5
A 10 248 279563 1616.99 697 679 172.5
A 13 248 238598 1379.47 697 679 172.5
B 10 128 251937 1671.95 711 685 150.3
B 4 236 112268 742.53 711 685 150.3
B 5 185 67377 443.8 711 685 150.3
C 12 252 106508 545.66 703 698 193.9
C 6 223 78010 398.7 703 698 193.9
C 12 250 17755 87.96 703 698 193.9
D 12 1 10557270 133444.98 273 261 79.1
D 2 62 3333496 42133.48 273 261 79.1
D 6 239 305987 3864.5 273 261 79.1

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