ASTROSAT CZTI

Data Quality Report

Orbit 22680

Creation date: 2024-06-27T18:44:22.149348
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/AS1A08_007T01_9000003362_22680cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22680cztM0_level2_quad_clean.evt
Size (bytes)894,939,840182,283,840
Size853.5 MB 173.8 MB
Events in quadrant A5,853,4741,208,897
Events in quadrant B6,339,7041,224,549
Events in quadrant C6,007,9501,167,820
Events in quadrant D8,133,8731,133,173

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02300
B02300
C02300
D02300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244873
B0258733
C0251073
D0319313

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11375730.641758%
B11375790.694505%
C113741441.266045%
D113742502.197995%

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 13835 11377 0 0 0.00% 0.00%
B 13835 11377 1 1 0.01% 0.01%
C 13834 11376 8 8 0.06% 0.07%
D 13834 11376 93 93 0.67% 0.82%

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 20584 63.85 1515 1487 299.1
A 0 226 13666 40.72 1515 1487 299.1
A 3 137 11296 32.8 1515 1487 299.1
B 0 230 211046 764.9 1496 1462 274.0
B 0 219 113436 408.66 1496 1462 274.0
B 0 229 46603 164.75 1496 1462 274.0
C 14 238 233606 698.2 1454 1464 332.5
C 10 22 84086 248.5 1454 1464 332.5
C 3 233 15930 43.51 1454 1464 332.5
D 12 227 892641 2491.39 1478 1438 357.7
D 7 238 686407 1914.85 1478 1438 357.7
D 12 235 318679 886.86 1478 1438 357.7

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