ASTROSAT CZTI

Data Quality Report

Orbit 34784

Creation date: 2022-03-05T09:17:05.963934
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/AS1C07_004T01_9000004990_34784cztM0_level2.evt modeM0/AS1C07_004T01_9000004990_34784cztM0_level2_quad_clean.evt
Size (bytes)429,609,60051,482,880
Size409.7 MB 49.1 MB
Events in quadrant A2,698,612299,410
Events in quadrant B3,501,318303,374
Events in quadrant C2,990,695308,199
Events in quadrant D3,471,181287,131

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108403
B0134602
C0117332
D0139662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5144250.486003%
B51442344.548989%
C5144380.738725%
D5144180.349922%

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 7237 5145 17 17 0.23% 0.33%
B 7237 5145 176 176 2.43% 3.42%
C 7237 5145 24 24 0.33% 0.47%
D 7237 5145 12 12 0.17% 0.23%

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 45703 341.75 663 652 131.8
A 8 192 38506 287.16 663 652 131.8
A 15 169 22400 164.98 663 652 131.8
B 5 172 418630 3392.44 659 644 123.2
B 5 255 392503 3180.39 659 644 123.2
B 0 190 31428 249.85 659 644 123.2
C 15 214 222954 1468.91 661 669 151.3
C 0 10 112188 736.94 661 669 151.3
C 14 67 29239 188.8 661 669 151.3
D 8 195 794713 5017.25 652 636 158.3
D 2 249 54715 341.69 652 636 158.3
D 12 6 26245 161.81 652 636 158.3

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