ASTROSAT CZTI

Data Quality Report

Orbit 11176

Creation date: 2024-06-27T16:09:19.253126
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/AS1A04_042T01_9000001630_11176cztM0_level2.evt modeM0/AS1A04_042T01_9000001630_11176cztM0_level2_quad_clean.evt
Size (bytes)779,336,64072,927,360
Size743.2 MB 69.5 MB
Events in quadrant A9,168,841376,089
Events in quadrant B5,433,979436,879
Events in quadrant C3,658,376431,513
Events in quadrant D4,790,561396,693

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0329701
B0214561
C0165741
D0197725

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8153138216.950816%
B81533884.758984%
C8153160.196247%
D8152971.189892%

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 9273 8154 921 921 9.93% 11.30%
B 9273 8154 245 245 2.64% 3.00%
C 9273 8154 0 0 0.00% 0.00%
D 9272 8153 52 52 0.56% 0.64%

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 8 5 2328040 13045.95 882 863 178.4
A 8 15 2010224 11264.3 882 863 178.4
A 14 238 1227132 6874.35 882 863 178.4
B 4 239 1098275 6091.66 951 928 180.1
B 10 16 255641 1413.98 951 928 180.1
B 4 80 111885 615.95 951 928 180.1
C 9 204 34626 155.93 929 937 216.1
C 13 61 7026 28.18 929 937 216.1
C 14 234 2881 9.0 929 937 216.1
D 10 157 290565 1319.39 911 887 219.6
D 5 222 248215 1126.5 911 887 219.6
D 1 52 242423 1100.12 911 887 219.6

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