ASTROSAT CZTI

Data Quality Report

Orbit 11216

Creation date: 2024-06-27T16:09:52.356656
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_075T01_9000001636_11216cztM0_level2.evt modeM0/AS1G08_075T01_9000001636_11216cztM0_level2_quad_clean.evt
Size (bytes)450,325,44076,993,920
Size429.5 MB 73.4 MB
Events in quadrant A4,014,554494,273
Events in quadrant B2,640,606536,579
Events in quadrant C2,413,454524,415
Events in quadrant D4,244,247439,825

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189333723
B0133572489
C0127142458
D0193643435

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0151
C0161
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012222
B012018
C012226
D012121

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A47493787.959570%
B4822851.762754%
C4827480.994406%
D471954311.506675%

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 7432 4956 186 186 2.50% 3.75%
B 7431 5025 24 24 0.32% 0.48%
C 7432 5041 20 20 0.27% 0.40%
D 7430 4943 424 424 5.71% 8.58%

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 915614 7787.38 578 566 117.5
A 14 238 440791 3746.47 578 566 117.5
A 8 15 325563 2765.84 578 566 117.5
B 4 239 145679 1251.43 608 594 115.9
B 3 189 43945 373.92 608 594 115.9
B 0 229 26807 226.1 608 594 115.9
C 1 3 78402 564.09 593 596 137.9
C 4 254 23398 165.31 593 596 137.9
C 13 61 4336 27.12 593 596 137.9
D 1 52 1750198 13473.32 541 527 129.9
D 10 199 98971 758.07 541 527 129.9
D 13 104 54227 413.52 541 527 129.9

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