ASTROSAT CZTI

Data Quality Report

Orbit 21757

Creation date: 2024-06-27T18:31:52.477590
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/AS1A07_005T01_9000003224_21757cztM0_level2.evt modeM0/AS1A07_005T01_9000003224_21757cztM0_level2_quad_clean.evt
Size (bytes)673,344,000100,189,440
Size642.2 MB 95.5 MB
Events in quadrant A3,179,508683,037
Events in quadrant B3,552,515706,171
Events in quadrant C3,206,166665,023
Events in quadrant D10,019,101530,848

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135122
B0146332
C0134332
D0341302

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6421320.498365%
B6421901.401651%
C6421570.887712%
D6421248538.701137%

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 7586 6423 0 0 0.00% 0.00%
B 7586 6423 16 16 0.21% 0.25%
C 7586 6423 0 0 0.00% 0.00%
D 7586 6422 2192 2192 28.90% 34.13%

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 15 236 39552 237.22 811 794 163.4
A 13 254 11760 67.12 811 794 163.4
A 4 2 9412 52.75 811 794 163.4
B 3 64 114338 729.54 823 805 155.6
B 0 230 84064 535.0 823 805 155.6
B 0 189 63583 403.4 823 805 155.6
C 14 238 123748 664.8 789 795 184.9
C 13 61 5452 25.18 789 795 184.9
C 0 10 3538 14.83 789 795 184.9
D 7 238 4377031 26986.21 663 646 162.2
D 1 52 2242737 13825.46 663 646 162.2
D 7 223 504689 3108.09 663 646 162.2

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