ASTROSAT CZTI

Data Quality Report

Orbit 38410

Creation date: 2024-06-27T21:52:23.663559
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/AS1A12_018T01_9000005386_38410cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38410cztM0_level2_quad_clean.evt
Size (bytes)378,593,28097,804,800
Size361.1 MB 93.3 MB
Events in quadrant A3,491,929651,684
Events in quadrant B3,201,139663,807
Events in quadrant C2,835,361647,154
Events in quadrant D4,022,140581,947

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141023
B0135932
C0122382
D0161752

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5961570.956215%
B5961881.476262%
C5961100.167757%
D59612203.690656%

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 7274 5962 32 32 0.44% 0.54%
B 7274 5962 43 43 0.59% 0.72%
C 7274 5962 5 5 0.07% 0.08%
D 7274 5962 184 184 2.53% 3.09%

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 10 83 430024 3225.04 659 647 133.1
A 12 16 201327 1507.3 659 647 133.1
A 9 143 124309 928.82 659 647 133.1
B 0 183 350443 2759.54 655 637 126.8
B 4 171 131706 1033.97 655 637 126.8
B 0 155 56226 438.53 655 637 126.8
C 15 214 255214 1677.67 645 648 151.7
C 0 207 14247 89.62 645 648 151.7
C 0 239 13741 86.29 645 648 151.7
D 2 250 424573 2754.24 635 620 153.9
D 2 153 300686 1949.4 635 620 153.9
D 7 223 168201 1088.7 635 620 153.9

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