ASTROSAT CZTI

Data Quality Report

Orbit 34392

Creation date: 2022-02-06T21:26:24.115465
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/AS1A05_085T01_9000004910_34392cztM0_level2.evt modeM0/AS1A05_085T01_9000004910_34392cztM0_level2_quad_clean.evt
Size (bytes)565,214,40095,895,360
Size539.0 MB 91.5 MB
Events in quadrant A2,660,466685,415
Events in quadrant B4,013,310662,413
Events in quadrant C2,813,415664,530
Events in quadrant D7,271,912520,198

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111862
B0153601
C0114421
D0253131

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A529690.169940%
B52963947.439577%
C5296140.264350%
D5296132725.056647%

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 7297 5297 1 1 0.01% 0.02%
B 7297 5297 296 296 4.06% 5.59%
C 7297 5297 11 11 0.15% 0.21%
D 7296 5296 1289 1289 17.67% 24.34%

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 24237 175.51 677 668 134.3
A 9 143 15437 109.98 677 668 134.3
A 13 254 10065 69.98 677 668 134.3
B 5 172 1264639 10327.16 653 639 122.4
B 5 200 79859 647.24 653 639 122.4
B 0 190 42757 344.11 653 639 122.4
C 15 214 221322 1502.37 639 646 146.9
C 0 10 50854 341.82 639 646 146.9
C 14 67 22845 151.13 639 646 146.9
D 7 223 1839170 13164.52 570 555 139.7
D 1 47 1014180 7257.58 570 555 139.7
D 8 195 792043 5667.07 570 555 139.7

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