ASTROSAT CZTI

Data Quality Report

Orbit 54012

Creation date: 2025-09-23T11:40:49.375267
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_54012cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54012cztM0_level2_quad_clean.evt
Size (bytes)1,124,691,84087,048,000
Size1.0 GB 83.0 MB
Events in quadrant A5,009,241727,701
Events in quadrant B8,877,423729,739
Events in quadrant C13,073,828330,117
Events in quadrant D14,058,625296,097

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208611
B0318801
C0442987
D0472521

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79352823.553875%
B7935124915.740391%
C7934448756.554071%
D7934462758.318629%

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 8370 7936 202 202 2.41% 2.55%
B 8370 7936 1003 1003 11.98% 12.64%
C 8369 7935 3219 3219 38.46% 40.57%
D 8369 7935 3469 3469 41.45% 43.72%

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 608020 2997.3 821 799 202.6
A 10 253 397980 1960.52 821 799 202.6
A 12 115 382059 1881.94 821 799 202.6
B 2 2 4955124 28826.66 806 779 171.9
B 0 213 283890 1647.27 806 779 171.9
B 7 252 99157 572.41 806 779 171.9
C 4 5 10381504 79778.6 476 471 130.1
C 15 189 445108 3417.05 476 471 130.1
C 14 80 148828 1140.13 476 471 130.1
D 8 176 11110517 79220.06 485 460 140.2
D 2 165 374211 2665.02 485 460 140.2
D 10 172 168859 1200.77 485 460 140.2

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