ASTROSAT CZTI

Data Quality Report

Orbit 37971

Creation date: 2024-06-27T21:46:49.731810
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/AS1A11_082T01_9000005356_37971cztM0_level2.fits modeM0/AS1A11_082T01_9000005356_37971cztM0_level2_quad_clean.evt
Size (bytes)395,778,24066,674,880
Size377.4 MB 63.6 MB
Events in quadrant A4,360,558439,795
Events in quadrant B3,869,728390,496
Events in quadrant C2,641,376447,297
Events in quadrant D3,397,847397,324

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165683
B0144512
C0106772
D0130662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4903340.693453%
B490354611.136039%
C4903170.346726%
D49031432.916582%

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 7026 4904 12 12 0.17% 0.24%
B 7026 4904 434 434 6.18% 8.85%
C 7026 4904 9 9 0.13% 0.18%
D 7026 4904 155 155 2.21% 3.16%

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 15 222 1688014 14264.23 589 580 118.3
A 10 83 359761 3036.23 589 580 118.3
A 7 191 12166 97.94 589 580 118.3
B 5 184 1462657 13945.34 554 541 104.8
B 5 172 156434 1486.87 554 541 104.8
B 0 229 32841 308.07 554 541 104.8
C 15 214 211648 1586.22 578 584 133.1
C 0 10 105426 787.92 578 584 133.1
C 14 254 61362 456.77 578 584 133.1
D 13 171 888836 6345.73 574 558 140.0
D 7 223 62103 439.67 574 558 140.0
D 10 118 47828 337.69 574 558 140.0

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