ASTROSAT CZTI

Data Quality Report

Orbit 34797

Creation date: 2022-03-06T06:08:09.109314
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/AS1C07_004T01_9000004990_34797cztM0_level2.evt modeM0/AS1C07_004T01_9000004990_34797cztM0_level2_quad_clean.evt
Size (bytes)456,042,24062,933,760
Size434.9 MB 60.0 MB
Events in quadrant A2,443,901400,745
Events in quadrant B3,151,863408,076
Events in quadrant C2,823,904402,230
Events in quadrant D5,054,982346,431

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102683
B0124052
C0112072
D0187262

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A496560.120846%
B49651152.316213%
C4965661.329305%
D496563312.749245%

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 6938 4966 0 0 0.00% 0.00%
B 6938 4966 81 81 1.17% 1.63%
C 6938 4966 56 56 0.81% 1.13%
D 6938 4966 581 581 8.37% 11.70%

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 10 83 47717 386.42 610 601 121.9
A 15 174 12741 99.57 610 601 121.9
A 7 16 12232 95.39 610 601 121.9
B 5 172 324245 2813.69 612 597 115.0
B 5 255 132567 1147.31 612 597 115.0
B 0 190 96782 836.2 612 597 115.0
C 15 214 211020 1511.89 600 605 139.2
C 0 10 192788 1380.89 600 605 139.2
C 14 67 71853 511.94 600 605 139.2
D 1 52 1728807 12448.35 564 548 138.8
D 8 195 707615 5092.88 564 548 138.8
D 13 249 167159 1200.07 564 548 138.8

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