ASTROSAT CZTI

Data Quality Report

Orbit 16610

Creation date: 2024-06-27T17:25:04.047702
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/AS1C04_009T01_9000002448_16610cztM0_level2.evt modeM0/AS1C04_009T01_9000002448_16610cztM0_level2_quad_clean.evt
Size (bytes)870,387,840223,136,640
Size830.1 MB 212.8 MB
Events in quadrant A5,754,2991,485,881
Events in quadrant B6,561,9601,519,940
Events in quadrant C6,290,6881,466,813
Events in quadrant D6,908,3641,423,932

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257283
B0274392
C0267562
D0295022

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02540
B02540
C02540
D02540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A124711130.906102%
B12471870.697618%
C124711090.874028%
D124713793.039051%

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 13857 12475 45 45 0.32% 0.36%
B 13857 12475 8 8 0.06% 0.06%
C 13857 12475 0 0 0.00% 0.00%
D 13857 12475 330 330 2.38% 2.65%

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 15 174 221469 766.8 1426 1397 287.0
A 9 143 22514 73.58 1426 1397 287.0
A 0 226 12539 38.82 1426 1397 287.0
B 15 35 253071 927.75 1434 1395 271.3
B 0 189 186452 682.18 1434 1395 271.3
B 3 209 102835 373.94 1434 1395 271.3
C 3 233 644083 2007.51 1373 1380 320.1
C 14 238 216771 672.78 1373 1380 320.1
C 7 247 55586 169.32 1373 1380 320.1
D 2 16 1132304 3387.63 1380 1338 333.9
D 10 70 158309 470.18 1380 1338 333.9
D 10 199 148132 439.7 1380 1338 333.9

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