ASTROSAT CZTI

Data Quality Report

Orbit 04966

Creation date: 2024-06-27T14:49:29.756438
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/AS1G05_158T01_9000000630_04966cztM0_level2.evt modeM0/AS1G05_158T01_9000000630_04966cztM0_level2_quad_clean.evt
Size (bytes)481,403,52084,925,440
Size459.1 MB 81.0 MB
Events in quadrant A3,023,771543,802
Events in quadrant B3,661,860540,834
Events in quadrant C2,911,375542,032
Events in quadrant D4,552,078502,785

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132322
B0149971
C0131281
D0178431

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6346861.355184%
B63461081.701859%
C6346290.456981%
D63463765.924992%

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 7461 6346 6 6 0.08% 0.09%
B 7461 6346 11 11 0.15% 0.17%
C 7461 6346 6 6 0.08% 0.09%
D 7461 6346 347 347 4.65% 5.47%

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 15 234 29127 181.69 766 749 156.2
A 0 50 18420 113.14 766 749 156.2
A 13 251 13410 81.06 766 749 156.2
B 15 204 554236 3741.95 767 751 147.9
B 15 54 44780 297.67 767 751 147.9
B 4 239 24288 159.13 767 751 147.9
C 1 16 42850 248.99 733 735 169.1
C 13 61 5950 30.83 733 735 169.1
C 1 3 5946 30.81 733 735 169.1
D 2 33 772607 4316.2 725 703 178.8
D 13 235 533767 2980.69 725 703 178.8
D 12 233 182926 1018.92 725 703 178.8

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