ASTROSAT CZTI

Data Quality Report

Orbit 19331

Creation date: 2024-06-27T18:01:29.607899
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/AS1A05_204T01_9000002856_19331cztM0_level2.evt modeM0/AS1A05_204T01_9000002856_19331cztM0_level2_quad_clean.evt
Size (bytes)1,062,529,920147,597,120
Size1013.3 MB 140.8 MB
Events in quadrant A6,226,265928,879
Events in quadrant B6,321,373939,942
Events in quadrant C6,284,861902,548
Events in quadrant D12,455,676787,811

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0271653
B0272483
C0270363
D0457753

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02680
B02680
C02680
D02680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A131741120.850159%
B131741180.895704%
C131741250.948839%
D13174222916.919690%

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 14724 13174 14 14 0.10% 0.11%
B 14724 13175 5 5 0.03% 0.04%
C 14724 13176 0 0 0.00% 0.00%
D 14723 13175 2164 2164 14.70% 16.43%

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 5 16 134242 419.88 1568 1531 316.1
A 11 29 34522 104.38 1568 1531 316.1
A 4 2 17161 49.45 1568 1531 316.1
B 0 190 55290 180.08 1563 1523 298.6
B 0 229 44706 144.63 1563 1523 298.6
B 12 111 37445 120.31 1563 1523 298.6
C 14 238 232113 649.25 1509 1518 355.2
C 3 233 160192 446.75 1509 1518 355.2
C 13 61 10760 26.02 1509 1518 355.2
D 7 238 6052622 17897.39 1397 1356 338.1
D 11 176 644505 1902.19 1397 1356 338.1
D 1 52 212193 623.58 1397 1356 338.1

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