ASTROSAT CZTI

Data Quality Report

Orbit 28031

Creation date: 2024-06-27T19:47:17.208642
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/AS1A10_048T02_9000004050_28031cztM0_level2.evt modeM0/AS1A10_048T02_9000004050_28031cztM0_level2_quad_clean.evt
Size (bytes)1,043,677,440174,358,080
Size995.3 MB 166.3 MB
Events in quadrant A6,111,2591,139,760
Events in quadrant B6,185,1591,140,375
Events in quadrant C6,876,3581,065,424
Events in quadrant D11,553,9911,033,648

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0266630
B0267080
C0285990
D0435480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13050550.421456%
B13050750.574713%
C130501671.279693%
D130507525.762452%

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 14225 13052 2 2 0.01% 0.02%
B 14225 13052 0 0 0.00% 0.00%
C 14225 13052 48 48 0.34% 0.37%
D 14225 13051 682 682 4.79% 5.23%

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 13 254 20257 59.13 1577 1544 316.5
A 8 192 16302 46.64 1577 1544 316.5
A 3 137 15954 45.54 1577 1544 316.5
B 12 111 38702 122.76 1565 1522 302.9
B 11 111 34991 110.5 1565 1522 302.9
B 14 111 33210 104.62 1565 1522 302.9
C 3 233 711745 2016.54 1498 1508 352.2
C 14 238 238264 672.21 1498 1508 352.2
C 10 22 58178 160.9 1498 1508 352.2
D 8 195 2101764 5941.39 1487 1448 353.5
D 1 52 1890169 5342.83 1487 1448 353.5
D 7 80 1644211 4647.06 1487 1448 353.5

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