ASTROSAT CZTI

Data Quality Report

Orbit 41813

Creation date: 2024-06-27T22:33:08.355862
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_093T02_9000005704_41813cztM0_level2.fits modeM0/AS1A12_093T02_9000005704_41813cztM0_level2_quad_clean.evt
Size (bytes)369,285,12094,440,960
Size352.2 MB 90.1 MB
Events in quadrant A3,780,764628,469
Events in quadrant B2,722,474651,267
Events in quadrant C3,442,254597,337
Events in quadrant D3,263,569569,076

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149282
B0122582
C0139672
D0140172

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59181121.892531%
B5917120.202805%
C59172313.904005%
D59171532.585770%

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 7231 5919 109 109 1.51% 1.84%
B 7229 5916 3 3 0.04% 0.05%
C 7229 5916 231 231 3.20% 3.90%
D 7229 5917 136 136 1.88% 2.30%

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 14 24 595201 4497.13 639 625 132.2
A 10 83 586295 4429.77 639 625 132.2
A 12 189 43805 326.6 639 625 132.2
B 4 171 151935 1192.98 639 620 126.8
B 0 183 29559 228.16 639 620 126.8
B 12 111 15966 120.99 639 620 126.8
C 0 10 800056 5568.71 608 611 143.6
C 15 214 232131 1612.7 608 611 143.6
C 15 159 34586 236.66 608 611 143.6
D 2 249 343195 2231.27 619 601 153.5
D 13 249 300660 1954.24 619 601 153.5
D 12 79 99970 647.17 619 601 153.5

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