ASTROSAT CZTI

Data Quality Report

Orbit 35230

Creation date: 2022-04-04T20:01:51.492193
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_9000005052_35230cztM0_level2.evt modeM0/AS1C07_004T01_9000005052_35230cztM0_level2_quad_clean.evt
Size (bytes)921,683,52051,402,240
Size879.0 MB 49.0 MB
Events in quadrant A2,747,488373,686
Events in quadrant B8,718,862293,393
Events in quadrant C3,162,862382,196
Events in quadrant D12,920,876126,824

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114023
B0296792
C0125472
D0419492

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5398160.296406%
B5398250046.313449%
C53981512.797332%
D5398419377.676917%

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 7191 5399 2 2 0.03% 0.04%
B 7191 5399 1758 1758 24.45% 32.56%
C 7191 5399 108 108 1.50% 2.00%
D 7191 5399 4025 4025 55.97% 74.55%

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 101187 768.3 652 640 130.9
A 9 143 50477 380.82 652 640 130.9
A 15 169 43336 326.25 652 640 130.9
B 5 236 5807225 56292.44 542 529 103.2
B 5 172 686168 6646.86 542 529 103.2
B 4 232 71015 683.32 542 529 103.2
C 0 10 352791 2426.91 629 634 145.1
C 15 214 227654 1564.52 629 634 145.1
C 12 250 62178 424.13 629 634 145.1
D 8 230 6611747 77146.53 347 338 85.7
D 8 195 2821016 32913.64 347 338 85.7
D 7 80 979893 11430.13 347 338 85.7

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