ASTROSAT CZTI

Data Quality Report

Orbit 18130

Creation date: 2024-06-27T17:45:32.793571
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_186T01_9000002692_18130cztM0_level2.evt modeM0/AS1A05_186T01_9000002692_18130cztM0_level2_quad_clean.evt
Size (bytes)955,635,840177,618,240
Size911.4 MB 169.4 MB
Events in quadrant A6,389,6141,139,608
Events in quadrant B6,752,7361,153,795
Events in quadrant C6,415,9831,098,467
Events in quadrant D8,463,4541,048,723

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02780
B02780
C02780
D02780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0279993
B0289543
C0279063
D0342723

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13588570.419488%
B135891140.838914%
C135891381.015527%
D135894853.569063%

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 15498 13591 0 0 0.00% 0.00%
B 15499 13592 14 14 0.09% 0.10%
C 15499 13592 0 0 0.00% 0.00%
D 15499 13592 348 348 2.25% 2.56%

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 90432 266.9 1637 1603 332.8
A 0 226 14254 38.01 1637 1603 332.8
A 3 137 12514 32.78 1637 1603 332.8
B 0 189 100979 319.26 1635 1593 311.3
B 7 220 58121 181.59 1635 1593 311.3
B 4 171 44401 137.51 1635 1593 311.3
C 14 238 241044 648.0 1569 1575 369.6
C 0 207 31025 79.69 1569 1575 369.6
C 5 218 20778 51.96 1569 1575 369.6
D 11 176 961530 2476.95 1572 1525 387.6
D 7 238 470907 1211.07 1572 1525 387.6
D 13 104 288053 739.28 1572 1525 387.6

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