ASTROSAT CZTI

Data Quality Report

Orbit 11185

Creation date: 2024-06-27T16:09:28.139418
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_171T01_9000001634_11185cztM0_level2.evt modeM0/AS1A04_171T01_9000001634_11185cztM0_level2_quad_clean.evt
Size (bytes)2,289,058,560358,568,640
Size2.1 GB 342.0 MB
Events in quadrant A17,345,8292,269,894
Events in quadrant B18,203,3482,264,886
Events in quadrant C12,141,2262,281,031
Events in quadrant D19,760,9722,133,551

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05660
B05660
C05660
D05660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07042535
B07268430
C05645719
D07788937

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2778010093.632109%
B2778716976.107172%
C277871730.622593%
D2778115745.665743%

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 31561 27796 475 475 1.51% 1.71%
B 31563 27797 873 873 2.77% 3.14%
C 31563 27798 3 3 0.01% 0.01%
D 31563 27797 1378 1378 4.37% 4.96%

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 3563404 5549.15 3164 3093 641.6
A 8 15 631479 979.41 3164 3093 641.6
A 15 174 407502 630.32 3164 3093 641.6
B 4 239 4741779 7907.52 3161 3080 599.3
B 15 204 361417 597.96 3161 3080 599.3
B 11 51 279166 460.71 3161 3080 599.3
C 13 61 22981 27.59 3105 3116 720.1
C 14 234 17125 19.45 3105 3116 720.1
C 12 4 16981 19.25 3105 3116 720.1
D 10 157 3927205 5420.77 3025 2940 723.9
D 10 253 1071227 1475.68 3025 2940 723.9
D 1 52 1041039 1433.97 3025 2940 723.9

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