ASTROSAT CZTI

Data Quality Report

Orbit 52543

Creation date: 2025-06-15T12:05:25.639161
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/AS1C09_011T06_9000006478_52543cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52543cztM0_level2_quad_clean.evt
Size (bytes)700,994,88085,841,280
Size668.5 MB 81.9 MB
Events in quadrant A3,051,741620,834
Events in quadrant B4,913,439622,870
Events in quadrant C5,803,782549,315
Events in quadrant D11,664,585342,142

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142171
B0192251
C0220171
D0392351

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6644320.481638%
B66454827.253574%
C66456349.541008%
D6645287543.265613%

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 7524 6645 13 13 0.17% 0.20%
B 7525 6646 337 337 4.48% 5.07%
C 7525 6646 535 535 7.11% 8.05%
D 7525 6646 2702 2702 35.91% 40.66%

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 62 109750 651.74 674 658 167.4
A 12 80 52592 310.27 674 658 167.4
A 13 248 45196 266.08 674 658 167.4
B 10 44 703427 5076.03 649 626 138.5
B 0 213 617721 4457.01 649 626 138.5
B 4 170 331395 2389.0 649 626 138.5
C 15 248 752332 4297.73 627 620 174.9
C 12 254 732932 4186.81 627 620 174.9
C 13 3 683792 3905.87 627 620 174.9
D 6 42 7236414 47839.81 521 497 151.3
D 8 176 937629 6195.79 521 497 151.3
D 12 17 243885 1609.14 521 497 151.3

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