ASTROSAT CZTI

Data Quality Report

Orbit 13071

Creation date: 2024-06-27T16:36:00.229915
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/AS1G08_068T01_9000001922_13071cztM0_level2.evt modeM0/AS1G08_068T01_9000001922_13071cztM0_level2_quad_clean.evt
Size (bytes)367,176,96051,125,760
Size350.2 MB 48.8 MB
Events in quadrant A1,921,930340,960
Events in quadrant B3,826,753310,264
Events in quadrant C1,809,121347,081
Events in quadrant D3,298,582276,243

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08394273
B014209254
C08110263
D012549285

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B082
C070
D071

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0844
B0833
C0844
D0811

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3857290.751880%
B386687022.503880%
C3861120.310800%
D386052113.497409%

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 4048 3869 2 2 0.05% 0.05%
B 4048 3882 569 569 14.06% 14.66%
C 4048 3876 1 1 0.02% 0.03%
D 4048 3874 501 501 12.38% 12.93%

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 12 189 80404 838.22 464 453 95.4
A 1 162 20449 209.64 464 453 95.4
A 15 223 9940 99.46 464 453 95.4
B 4 239 1646947 20957.16 413 404 78.6
B 0 85 491417 6249.6 413 404 78.6
B 3 209 25516 319.62 413 404 78.6
C 8 128 6881 60.29 459 463 106.4
C 8 112 3851 31.83 459 463 106.4
C 12 4 3725 30.64 459 463 106.4
D 1 52 1644036 16399.38 417 405 100.2
D 14 34 53046 525.23 417 405 100.2
D 2 234 13800 133.65 417 405 100.2

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