ASTROSAT CZTI

Data Quality Report

Orbit 34287

Creation date: 2022-01-30T20:27:04.854082
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/AS1T04_086T01_9000004890_34287cztM0_level2.evt modeM0/AS1T04_086T01_9000004890_34287cztM0_level2_quad_clean.evt
Size (bytes)446,794,56066,962,880
Size426.1 MB 63.9 MB
Events in quadrant A2,442,826421,348
Events in quadrant B3,479,759416,836
Events in quadrant C2,874,937420,049
Events in quadrant D4,375,315399,246

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108581
B0137470
C0117040
D0166530

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A529030.056711%
B52901532.892250%
C5290611.153119%
D5290651.228733%

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 6932 5291 3 3 0.04% 0.06%
B 6932 5291 107 107 1.54% 2.02%
C 6932 5291 47 47 0.68% 0.89%
D 6932 5291 40 40 0.58% 0.76%

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 9 143 50211 406.16 608 595 122.2
A 10 83 17660 139.69 608 595 122.2
A 7 16 14993 117.86 608 595 122.2
B 5 172 590424 5162.07 602 584 114.3
B 4 251 255661 2232.34 602 584 114.3
B 0 229 100546 874.83 602 584 114.3
C 14 254 257693 1868.34 597 602 137.6
C 15 214 225425 1633.84 597 602 137.6
C 0 10 36972 264.31 597 602 137.6
D 8 195 1295926 8877.53 600 585 145.9
D 12 235 413122 2827.29 600 585 145.9
D 7 223 115808 789.67 600 585 145.9

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