ASTROSAT CZTI

Data Quality Report

Orbit 35552

Creation date: 2022-04-26T09:44:10.008979
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_093T01_9000005090_35552cztM0_level2.evt modeM0/AS1A11_093T01_9000005090_35552cztM0_level2_quad_clean.evt
Size (bytes)699,975,36071,743,680
Size667.5 MB 68.4 MB
Events in quadrant A12,162,346168,833
Events in quadrant B2,830,709562,543
Events in quadrant C3,156,113560,965
Events in quadrant D2,716,975533,956

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0395093
B0114822
C0123292
D0112602

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4908477797.330888%
B49081272.587612%
C49081813.687857%
D4908310.631622%

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 7061 4908 4276 4276 60.56% 87.12%
B 7061 4909 77 77 1.09% 1.57%
C 7061 4909 139 139 1.97% 2.83%
D 7061 4909 21 21 0.30% 0.43%

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 15 169 11262364 251531.42 215 211 44.8
A 10 83 49910 1109.99 215 211 44.8
A 13 6 10303 225.4 215 211 44.8
B 5 172 441735 3984.96 588 573 110.7
B 15 85 31957 283.49 588 573 110.7
B 0 189 22846 201.19 588 573 110.7
C 0 10 531176 3998.34 580 587 132.7
C 15 214 217489 1634.5 580 587 132.7
C 10 49 87280 653.29 580 587 132.7
D 8 195 191568 1383.27 574 560 138.1
D 2 250 176027 1270.73 574 560 138.1
D 2 153 42605 304.49 574 560 138.1

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