ASTROSAT CZTI

Data Quality Report

Orbit 20243

Creation date: 2024-06-27T18:12:55.206319
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/AS1T03_123T01_9000003000_20243cztM0_level2.evt modeM0/AS1T03_123T01_9000003000_20243cztM0_level2_quad_clean.evt
Size (bytes)931,605,120174,035,520
Size888.4 MB 166.0 MB
Events in quadrant A6,291,2471,111,183
Events in quadrant B6,470,5061,121,797
Events in quadrant C6,745,5261,063,843
Events in quadrant D7,806,8621,056,105

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02700
B02700
C02700
D02700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0273443
B0276853
C0282613
D0320123

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A132981531.150549%
B132991911.436198%
C132993232.428754%
D132992631.977592%

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 14953 13301 1 1 0.01% 0.01%
B 14954 13302 2 2 0.01% 0.02%
C 14954 13302 23 23 0.15% 0.17%
D 14954 13302 120 120 0.80% 0.90%

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 3 137 14039 37.87 1627 1593 328.6
A 0 226 13893 37.43 1627 1593 328.6
A 4 2 12804 34.11 1627 1593 328.6
B 0 230 82500 258.57 1616 1574 313.0
B 12 111 39050 119.74 1616 1574 313.0
B 0 214 35929 109.77 1616 1574 313.0
C 9 54 294451 796.58 1560 1570 367.7
C 14 238 240425 649.64 1560 1570 367.7
C 3 233 105264 282.03 1560 1570 367.7
D 1 52 1599963 4140.82 1584 1536 386.0
D 7 238 226012 581.52 1584 1536 386.0
D 2 234 57519 145.03 1584 1536 386.0

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