ASTROSAT CZTI

Data Quality Report

Orbit 41990

Creation date: 2024-06-27T22:35:25.549489
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/AS1A12_104T01_9000005728_41990cztM0_level2.fits modeM0/AS1A12_104T01_9000005728_41990cztM0_level2_quad_clean.evt
Size (bytes)858,646,080246,401,280
Size818.9 MB 235.0 MB
Events in quadrant A7,760,8371,637,503
Events in quadrant B6,891,3361,674,745
Events in quadrant C6,944,8851,625,910
Events in quadrant D8,998,2891,464,459

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03120
B03120
C03120
D03120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0325724
B0315763
C0308163
D0381826

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15331280.182636%
B15331480.313091%
C15331140.091318%
D153305053.294194%

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 19507 15334 5 5 0.03% 0.03%
B 19507 15334 17 17 0.09% 0.11%
C 19507 15334 1 1 0.01% 0.01%
D 19507 15334 505 505 2.59% 3.29%

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 83 1301565 3891.3 1635 1601 334.1
A 2 79 55689 161.91 1635 1601 334.1
A 7 3 39644 113.88 1635 1601 334.1
B 5 255 182252 574.81 1626 1579 314.3
B 0 190 155270 488.97 1626 1579 314.3
B 4 81 87451 273.2 1626 1579 314.3
C 15 214 618615 1655.01 1610 1618 372.8
C 8 229 14354 34.16 1610 1618 372.8
C 3 233 13077 30.74 1610 1618 372.8
D 1 52 784039 2026.98 1587 1544 386.0
D 13 249 719775 1860.51 1587 1544 386.0
D 12 233 451781 1166.3 1587 1544 386.0

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