ASTROSAT CZTI

Data Quality Report

Orbit 03978

Creation date: 2024-06-27T14:35:54.364371
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/AS1G05_247T01_9000000512_03978cztM0_level2.evt modeM0/AS1G05_247T01_9000000512_03978cztM0_level2_quad_clean.evt
Size (bytes)448,447,680103,907,520
Size427.7 MB 99.1 MB
Events in quadrant A3,046,467693,191
Events in quadrant B4,066,432679,259
Events in quadrant C2,799,179679,986
Events in quadrant D3,242,757656,477

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133503
B0163452
C0127522
D0143022

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6271480.765428%
B62713395.405836%
C6271110.175411%
D6271931.483017%

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 7481 6272 18 18 0.24% 0.29%
B 7481 6272 217 217 2.90% 3.46%
C 7481 6272 5 5 0.07% 0.08%
D 7481 6272 69 69 0.92% 1.10%

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 0 50 130541 882.57 726 713 147.1
A 0 118 41421 276.73 726 713 147.1
A 13 251 30559 202.89 726 713 147.1
B 14 167 1121954 8205.75 723 708 136.6
B 0 229 41946 301.8 723 708 136.6
B 15 204 41445 298.13 723 708 136.6
C 9 144 34320 209.69 698 701 160.3
C 8 128 20107 121.04 698 701 160.3
C 8 112 8459 48.39 698 701 160.3
D 2 232 342888 2077.51 691 672 164.7
D 7 53 70379 423.17 691 672 164.7
D 12 217 52394 313.99 691 672 164.7

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