ASTROSAT CZTI

Data Quality Report

Orbit 31687

Creation date: 2024-06-27T20:31:33.634586
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/AS1A10_103T09_9000004630_31687cztM0_level2.evt modeM0/AS1A10_103T09_9000004630_31687cztM0_level2_quad_clean.evt
Size (bytes)613,137,60091,405,440
Size584.7 MB 87.2 MB
Events in quadrant A3,259,099616,123
Events in quadrant B5,525,389617,358
Events in quadrant C4,409,775569,964
Events in quadrant D4,959,311535,294

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135722
B0207482
C0172772
D0188272

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6143761.237181%
B61431462.376689%
C61433395.518476%
D61435218.481198%

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 7468 6144 37 37 0.50% 0.60%
B 7468 6144 33 33 0.44% 0.54%
C 7468 6144 180 180 2.41% 2.93%
D 7468 6144 477 477 6.39% 7.76%

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 0 13 172807 1082.03 797 783 159.0
A 13 254 12763 75.35 797 783 159.0
A 3 137 7739 43.75 797 783 159.0
B 6 159 1831076 12066.55 795 777 151.7
B 10 245 329281 2165.72 795 777 151.7
B 4 80 140057 918.23 795 777 151.7
C 3 233 839312 4861.85 742 748 172.5
C 0 10 395036 2286.01 742 748 172.5
C 14 238 120873 696.46 742 748 172.5
D 12 227 1181406 6771.9 733 715 174.4
D 8 195 640522 3669.64 733 715 174.4
D 13 249 236252 1350.93 733 715 174.4

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