ASTROSAT CZTI

Data Quality Report

Orbit 54061

Creation date: 2025-09-25T18:09:51.652897
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_041T01_9000006510_54061cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54061cztM0_level2_quad_clean.evt
Size (bytes)531,175,68087,652,800
Size506.6 MB 83.6 MB
Events in quadrant A3,616,710579,458
Events in quadrant B7,006,724565,455
Events in quadrant C4,149,384547,455
Events in quadrant D4,395,159517,505

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153961
B0252971
C0168881
D0176581

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63692734.286387%
B6369115518.134715%
C63693255.102842%
D63692013.155911%

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 7179 6369 175 175 2.44% 2.75%
B 7179 6369 799 799 11.13% 12.55%
C 7179 6369 276 276 3.84% 4.33%
D 7179 6369 194 194 2.70% 3.05%

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 15 174 868243 5225.3 667 649 166.0
A 0 8 67371 401.85 667 649 166.0
A 14 235 30836 181.81 667 649 166.0
B 15 20 3597135 26210.2 638 616 137.2
B 4 81 611704 4453.4 638 616 137.2
B 0 213 76790 555.13 638 616 137.2
C 15 177 1218639 6929.35 641 634 175.8
C 15 193 106616 602.94 641 634 175.8
C 12 252 61627 347.0 641 634 175.8
D 10 172 716302 3898.66 643 616 183.6
D 14 20 572679 3116.28 643 616 183.6
D 8 176 173202 940.15 643 616 183.6

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