ASTROSAT CZTI

Data Quality Report

Orbit 33902

Creation date: 2024-06-27T20:53:57.004312
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/AS1T04_090T01_9000004840_33902cztM0_level2.evt modeM0/AS1T04_090T01_9000004840_33902cztM0_level2_quad_clean.evt
Size (bytes)463,749,12063,745,920
Size442.3 MB 60.8 MB
Events in quadrant A2,758,101409,564
Events in quadrant B3,325,346405,914
Events in quadrant C3,018,286395,166
Events in quadrant D4,613,995378,964

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109683
B0127202
C0116842
D0170522

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4856871.791598%
B48563366.919275%
C48561302.677100%
D48562775.704283%

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 6978 4856 46 46 0.66% 0.95%
B 6979 4857 232 232 3.32% 4.78%
C 6979 4857 93 93 1.33% 1.91%
D 6979 4857 263 263 3.77% 5.41%

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 15 169 358765 2949.5 614 603 121.4
A 13 6 12989 102.0 614 603 121.4
A 10 83 11556 90.2 614 603 121.4
B 5 172 942589 8587.64 583 568 109.7
B 4 232 27272 243.44 583 568 109.7
B 4 170 14844 130.14 583 568 109.7
C 0 10 431696 3190.1 589 595 135.1
C 15 214 210874 1556.04 589 595 135.1
C 14 67 42669 311.34 589 595 135.1
D 8 195 787776 5447.35 592 576 144.5
D 1 52 457649 3162.9 592 576 144.5
D 13 249 363274 2509.83 592 576 144.5

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