ASTROSAT CZTI

Data Quality Report

Orbit 08928

Creation date: 2024-06-27T15:39:04.913453
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/AS1A03_092T01_9000001240_08928cztM0_level2.evt modeM0/AS1A03_092T01_9000001240_08928cztM0_level2_quad_clean.evt
Size (bytes)443,419,20065,583,360
Size422.9 MB 62.5 MB
Events in quadrant A3,550,195387,159
Events in quadrant B3,064,997393,473
Events in quadrant C2,968,561388,405
Events in quadrant D3,418,961378,688

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143763
B0131112
C0129912
D0139482

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6271931.483017%
B6271610.972732%
C6271631.004624%
D6271620.988678%

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 7426 6271 26 26 0.35% 0.41%
B 7426 6271 0 0 0.00% 0.00%
C 7426 6271 0 0 0.00% 0.00%
D 7426 6271 5 5 0.07% 0.08%

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 8 5 381596 2440.8 777 763 156.0
A 15 174 113252 720.95 777 763 156.0
A 13 164 24187 150.13 777 763 156.0
B 12 111 15560 100.41 784 766 147.3
B 6 51 13534 86.66 784 766 147.3
B 11 111 12293 78.24 784 766 147.3
C 13 61 5944 29.54 761 764 175.4
C 8 222 2126 7.77 761 764 175.4
C 3 202 1947 6.75 761 764 175.4
D 1 52 266943 1441.69 755 736 184.6
D 8 195 115536 621.72 755 736 184.6
D 12 233 71495 383.21 755 736 184.6

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