ASTROSAT CZTI

Data Quality Report

Orbit 34215

Creation date: 2022-01-27T09:29:31.780085
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/AS1T04_086T01_9000004884_34215cztM0_level2.evt modeM0/AS1T04_086T01_9000004884_34215cztM0_level2_quad_clean.evt
Size (bytes)577,782,72071,519,040
Size551.0 MB 68.2 MB
Events in quadrant A2,599,587464,281
Events in quadrant B4,255,908458,630
Events in quadrant C3,948,638435,210
Events in quadrant D6,317,362417,402

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114343
B0162392
C0151532
D0226512

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5567150.269445%
B55674457.993533%
C55673696.628346%
D55675389.664092%

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 7299 5567 8 8 0.11% 0.14%
B 7299 5567 328 328 4.49% 5.89%
C 7299 5567 325 325 4.45% 5.84%
D 7298 5566 472 472 6.47% 8.48%

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 9 143 65717 498.85 644 628 130.5
A 10 83 23504 175.32 644 628 130.5
A 13 6 11290 81.71 644 628 130.5
B 5 172 1333533 11275.89 626 611 118.2
B 5 31 186028 1568.54 626 611 118.2
B 5 255 92719 779.19 626 611 118.2
C 4 254 1083284 7611.78 616 621 142.2
C 15 214 232397 1629.53 616 621 142.2
C 0 10 144753 1013.34 616 621 142.2
D 8 195 1390337 9056.08 620 602 153.5
D 10 118 1102583 7180.96 620 602 153.5
D 1 52 361767 2353.5 620 602 153.5

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